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BOS - SOF

$305 Find cheap flights from Boston to Sofia

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to Sofia departing on 8/6. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Sat 6/29
Sat 7/6

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These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to Sofia.
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Cheap flight deals from Boston to Sofia (BOS-SOF)

 
These are the cheapest deals for flights from Boston to Sofia currently on KAYAK along with options from the most popular airlines KAYAK users selected for this route. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from Boston to Sofia

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Boston to Sofia.

Recent one-way flight deals from Boston to Sofia

Only flying one-way? Below are some of the best one-way flight deals from Boston to Sofia found on KAYAK recently.

Recent last minute flight deals from Boston to Sofia

Leaving soon but still want a bargain? Check out these latest deals for last minute flights from Boston to Sofia.

Recent direct flight deals from Boston to Sofia

The latest deals for direct flights from Boston to Sofia so you can sit back and relax without the need for a layover.

Cheap bus & train deals from Boston to Sofia

Find recent round-trip train or bus tickets from Boston to Sofia.

All round-trip flight deals to Sofia

The cheapest plane tickets to Sofia found on KAYAK recently.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
5:20 pm - 5:50 pmBOS-SOF
18h 30m1 stop
1:45 pm - 6:35 pmSOF-BOS
11h 50m1 stop
$504Lufthansa
Find Deal
Wed, Oct 30 - Wed, Nov 13
8:30 am - 2:10 pmBOS-SOF
23h 40m1 stop
6:05 pm - 12:50 pmSOF-BOS
25h 45m1 stop
Tue, Oct 29 - Tue, Nov 12
5:30 pm - 2:10 pmBOS-SOF
14h 40m2 stops
6:05 pm - 2:05 pmSOF-BOS
27h 00m1 stop
$514British Airways
Find Deal
Tue, Oct 29 - Tue, Nov 12
1:32 pm - 2:10 pmBOS-SOF
17h 38m2 stops
6:05 pm - 12:50 pmSOF-BOS
25h 45m1 stop
$515British Airways
Find Deal
Tue, Nov 26 - Tue, Dec 10
9:50 pm - 8:20 pmBOS-SOF
15h 30m1 stop
3:45 pm - 7:55 pmSOF-BOS
35h 10m1 stop
$636Turkish Airlines
Find Deal
Thu, Sep 26 - Thu, Oct 10
9:50 pm - 8:20 pmBOS-SOF
15h 30m1 stop
3:45 pm - 7:55 pmSOF-BOS
35h 10m1 stop
$645Turkish Airlines
Find Deal
Sun, Sep 29 - Sun, Oct 13
12:44 pm - 11:00 pmBOS-SOF
27h 16m2 stops
6:00 am - 1:20 pmSOF-BOS
14h 20m1 stop
$747United Airlines
Find Deal
Thu, Aug 15 - Fri, Nov 15
5:10 pm - 1:10 pmBOS-SOF
13h 00m1 stop
10:55 am - 3:20 pmSOF-BOS
11h 25m1 stop
$790SWISS
Find Deal
Tue, Oct 1 - Tue, Oct 15
9:45 pm - 10:10 amBOS-SOF
29h 25m1 stop
3:40 pm - 3:20 pmSOF-BOS
30h 40m1 stop
$796SWISS
Find Deal
Tue, Oct 1 - Mon, Oct 14
9:00 am - 11:20 amBOS-SOF
19h 20m3 stops
6:05 am - 1:20 pmSOF-BOS
14h 15m2 stops
$802United Airlines
Find Deal
Thu, Aug 15 - Fri, Nov 15
3:27 pm - 12:25 amBOS-SOF
25h 58m2 stops
Tue, Aug 6
7:15 pm - 11:40 amBOS-SOF
33h 25m2 stops
Wed, Aug 7
3:26 pm - 10:30 pmBOS-SOF
24h 04m3 stops
Wed, Aug 7
8:50 pm - 2:15 pmBOS-SOF
34h 25m3 stops
Sun, Jul 14
8:50 pm - 2:55 amBOS-SOF
23h 05m3 stops
Tue, Aug 6
12:35 pm - 11:55 pmBOS-SOF
28h 20m3 stops
Mon, Jul 15
7:15 pm - 2:55 amBOS-SOF
24h 40m3 stops
Sat, Jul 13
12:35 pm - 7:40 pmBOS-SOF
24h 05m2 stops
Sun, Jul 14
7:15 pm - 7:25 pmBOS-SOF
17h 10m2 stops
Sat, Jul 13
4:10 pm - 5:05 pmBOS-SOF
17h 55m1 stop
Tue, Aug 6
7:15 pm - 9:20 amBOS-SOF
31h 05m2 stops
10:55 am - 3:20 pmSOF-BOS
11h 25m1 stop
$1,023
Find Deal
Sun, Jun 2 - Tue, Jul 16
8:05 pm - 6:45 pmBOS-SOF
15h 40m1 stop
12:55 pm - 5:50 pmSOF-BOS
11h 55m1 stop
$1,095Lufthansa
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Fri, May 31 - Sun, Jun 30
5:10 pm - 11:00 pmBOS-SOF
22h 50m2 stops
6:00 am - 5:50 pmSOF-BOS
18h 50m1 stop
$1,123United Airlines
Find Deal
Fri, May 31 - Sun, Jun 30
9:45 pm - 6:45 pmBOS-SOF
14h 00m2 stops
12:55 pm - 8:05 pmSOF-BOS
14h 10m2 stops
$1,127SWISS
Find Deal
Fri, May 31 - Sun, Jun 30
7:15 pm - 7:40 pmBOS-SOF
17h 25m2 stops
12:00 pm - 9:31 amSOF-BOS
28h 31m2 stops
$1,135
Find Deal
Sun, Jun 2 - Tue, Jul 16
7:15 pm - 7:40 pmBOS-SOF
17h 25m2 stops
6:00 am - 6:00 pmSOF-BOS
19h 00m3 stops
$1,190
Find Deal
Sun, Jun 2 - Tue, Jul 16
10:40 am - 2:15 amBOS-SOF
32h 35m3 stops
6:00 am - 6:00 pmSOF-BOS
19h 00m3 stops
$1,313
Find Deal
Sun, Jun 2 - Tue, Jul 16
9:50 pm - 2:55 pmBOS-SOF
34h 05m1 stop
3:45 pm - 7:55 pmSOF-BOS
35h 10m1 stop
$1,324Turkish Airlines
Find Deal
Sun, Jun 2 - Tue, Jul 16
1:38 pm - 7:00 pmBOS-SOF
22h 22m2 stops
9:00 pm - 4:50 pmSOF-BOS
26h 50m1 stop
$1,601British Airways
Find Deal
Fri, May 31 - Sun, Jun 30
9:50 pm - 8:20 pmBOS-SOF
15h 30m1 stop
3:45 pm - 7:55 pmSOF-BOS
35h 10m1 stop
$1,712Turkish Airlines
Find Deal
Fri, May 31 - Sun, Jun 30

Flights from Boston to Sofia - Travel Insights & Trends

Get data-powered insights and trends into flights from Boston to Sofia to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Boston to Sofia?

The average price of all flights from Boston to Sofia clicked on KAYAK for each day over the last 12 months.
Your flight ticket price will generally be cheaper if you fly to Sofia on a Tuesday and more expensive on a Friday. On your return trip to Boston, you should consider flying back on a Thursday, and avoid Tuesdays for better deals.

What is the cheapest month to fly from Boston to Sofia?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Boston to Sofia, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Boston to Sofia is January, where tickets cost $637 on average. On the other hand, the most expensive months are June and July, where the average cost of tickets is $1,191 and $1,142 respectively.

How far in advance should I book a flight from Boston to Sofia?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Boston to Sofia, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Boston to Sofia, you should book around 1 day before departure. For the absolute cheapest price, our data suggests you should book 10 days before departure.

Good to know

Low season

January

High season

July

Cheapest flight

$305
Best time to beat the crowds with an average 28% drop in price.
Most popular time to fly with an average 30% increase in price.
Flight from Boston to Sofia

When to book flights from Boston to Sofia

Are your dates flexible? Find out the best times to travel from Boston to Sofia based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Boston to Sofia

  • What are the layover options on the flight route from Boston to Sofia?

    Your layover will automatically depend on the airline you’re traveling with because each airline on this route has its preferred airport for layovers. For example, Turkish Airlines has all its layovers on this route scheduled for Istanbul. Similarly, Lufthansa has its layovers scheduled for Frankfurt or Munich while SWISS Airlines is scheduled for Zurich.

  • Do I need a visa to fly to Sofia?

    As it stands, U.S. citizens traveling to Bulgaria are not required to carry visas on entry as long as they are traveling on a regular passport and don’t plan on staying for longer than 90 days. In fact, the only mandatory requirement is your passport, with a validity of at least three months beyond the departure date from Bulgaria and one blank page for entry stamps.

  • Is public transport available from Sofia International Airport (SOF)?

    Access to the city center from Sofia Airport is possible through a range of options including bus, metro, and taxi. Taking a taxi is the most convenient although the bus and metro offer an affordable option. The metro in particular is a faster option and typically operates round the clock at intervals of fifteen minutes. To catch the metro, head over to the Airport Metro Station located in Terminal 2 and take the Metro line M2, which leads directly to the city center station Serdika.

  • Which is the most sustainable airline flying this route?

    In these modern times, it is pivotal that we think about the environment. While flying is by no means a sustainable way to travel, there are measures we can take to make our trips more sustainable, and it starts with using a sustainable airline. Lufthansa and American Airlines are a few of the airlines serving this route that have already adopted the use of Sustainable Aviation Fuel.

  • What is the cheapest flight from Boston to Sofia?

    In the last 3 days, the lowest price for a flight from Boston to Sofia was $305 for a one-way ticket and $504 for a round-trip.

  • Do I need a passport to fly between Boston and Sofia?

    Yes

  • Which airports will I be using when flying from Boston to Sofia?

    When flying out of Boston you will be using Boston Logan Intl. You will be landing at Sofia, also known as Sofia.

  • Which aircraft models fly most regularly from Boston to Sofia?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Boston to Sofia?

    Star Alliance, oneworld, and SkyTeam are the airline alliances operating flights between Boston and Sofia, with Star Alliance being the most commonly used for this route.

  • What is the most popular layover when flying to Sofia from Boston?

    Frankfurt am Main is the most popular layover city among KAYAK users traveling from Boston to Sofia.

  • Which is the best airline for flights from Boston to Sofia, SWISS or Austrian Airlines?

    The two airlines most popular with KAYAK users for flights from Boston to Sofia are SWISS and Austrian Airlines. With an average price for the route of $1,031 and an overall rating of 7.7, SWISS is the most popular choice. Austrian Airlines is also a great choice for the route, with an average price of $978 and an overall rating of 7.6.

  • How does KAYAK find such low prices on flights from Boston to Sofia?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Boston to Sofia.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Boston to Sofia?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Sofia from Boston is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Boston to Sofia?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Sofia with an airline and back to Boston with another airline. Booking your flights between Boston and SOF can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boston to Sofia?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Sofia from Boston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

KAYAK’s top tips for finding a cheap flight from Boston to Sofia

  • Business travelers looking to work while flying should book their flights with Lufthansa. It provides Wi-Fi to all passengers, allowing you to browse the internet, send emails, and check your social media while flying.
  • To get access to an airport lounge during your layover, consider booking your flight with an airline that has a lounge at the airport. For example, when you book with Lufthansa, you can access the Lufthansa Senator Lounge during your layover at Frankfurt Airport.
  • When you book an economy-class ticket with United Airlines, you can be upgraded to the next class at a lower cost compared to what you would’ve paid if you booked a first-class ticket from the get-go.
  • If you have booked your flight with Turkish Airlines, consider upgrading with the EcoFly promotion and get two checked bags plus a carry-on inclusive of your ticket instead of just one carry-on bag.
  • A quick way into Boston Logan International Airport (BOS) from downtown Boston is via taxi. They are available at every corner of the city and will take you directly to the airport terminal. When rush hour traffic is a problem, the Blue Line from South Station offers a great alternative.
See more tips

Top 5 airlines serving from Boston to Sofia

 
See real verified KAYAK customer reviews for airlines flying from Boston to Sofia. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Boston to Sofia? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.7
SWISSOverall score based on 1954 reviews
8.4Crew
7.5Comfort
7.4Food
7.2Entertainment
7.8Boarding
Airline reviews

I arrived 59 minutes before the flight in Tampa due to Massive traffic jam and the flight was closed and I was told that I’d simply have to “book a new ticket on line myself and the gate agents couldn’t help me”. Even though the flight was delayed over 30 minutes, (leaving one hour and 29 minutes before departure, they refused to assist in any way explaining that it’s automatic and there can be no exceptions. Horrible experience due to poor management at gate. I fly this option 2-3 times a year and have a good experience with the cabin crew etc. But, Tampa agents are not trained or allowed customer service. I once was a gate agent for USAir, I know times have changed, but forcing me to purchase a new ticket and complete indifference and inconvenience. No thanks

2.0 MediocreRob, May 2024TPA - ZRH
Read more about SWISS reviews

I arrived 59 minutes before the flight in Tampa due to Massive traffic jam and the flight was closed and I was told that I’d simply have to “book a new ticket on line myself and the gate agents couldn’t help me”. Even though the flight was delayed over 30 minutes, (leaving one hour and 29 minutes before departure, they refused to assist in any way explaining that it’s automatic and there can be no exceptions. Horrible experience due to poor management at gate. I fly this option 2-3 times a year and have a good experience with the cabin crew etc. But, Tampa agents are not trained or allowed customer service. I once was a gate agent for USAir, I know times have changed, but forcing me to purchase a new ticket and complete indifference and inconvenience. No thanks

Crew members were good. Seats were packed and too tight .

Carry on luggage size for economy passengers significantly smaller than other airlines, so nearly all ecomy passengers had their bags taken and checked.

Had a short layover in Zurich, luggage marked expedite and short layover but still didn’t get luggage when arrived in Split until 3 days later even though husband got his.

On time flight, I requested wheelchair in Zurich , when I arrived they were no where to be found, I had one hour between flights I had to walk with great difficulty.

We had issues with upgrading our seats. The flight itself was fine.

Horrible experience. They "GAME" with seats they decided to play where you can`t select or get seat during check-in without paying and then forcing you to stay long line at the Customer Service at the gate to get a boarding ticket with seat assigned is pathetic. Will never fly with United again!

So terrible. They would not rebook me for a flight until 2 days. I had to spend so much money to get my own flight. They were rude and not helpful.

Overall a good experience, the flight was on time, the crew very attentive and friendly. However the seats are too cramped, there is no space, and as soon as the person in front reclines the seat, it's literally in your face.

Bag lost. Lost bag recovery process is an unsatisfying customer experience. Because 1) bag is still lost but also 2) the process is outdated and form-heavy and 3) in our case also involved a long line.

Overnight flight in the old style Business class, but still very good.

I was in business class, without the business class amenities. Large seat with lots of legroom, but no TV or bed. Food was okay, but I did enjoy the Turkish red wine.

Excellent service and comfort from the moment you check in. Flight crew is hyper focused on making passengers comfortable and at ease. It’s like a flying hotel!

Only chicken as a meat dish through out the flight

Nothing really was great as such. Seen other no name airlines perform better.

Quality of service on board was very inconsistent. FA service primarily seemed robotic and they barely engaged with passengers

I’m unclear why I had to pay extra for assigned seats as Turkish airlines did not honor the seating. We were placed across the aisle from each other on TK 34, and were seated behind one another on TK 694. Because my name was misspelled on e-ticket (Klawiter, instead of Klawitter) I could not log onto website to get the connection gate number in Istanbul. The monitors in the airport were a jumbled mess 1/2 Arabic and 1/2 English.

On line check in needs a lot of improvement. I tried and gave up.

Food not good, flight attendants not the best, not accommodating very ruff

the female flight attendant was racist towards me. I could tell she treated the two other passengers next to me with more softness.

The flight and boarding were easy peasy. I was traveling with my 4-year-old, so a smooth boarding experience was especially appreciated. My only piece of feedback is really about where our gate was in O'Hare. They've shoved four gates into a tiny corner of the B terminal and there isn't early enough room or seating for everyone. Not United's problem, but did dent the overall experience.

We liked the fully reclinable seats. Had center seats, so it was difficult to talk to spouse. Crew was great

Aisle chair was good and liked the foot bar preventing you from putting your foot in the isle, The breakfast on this international flight to Zurich was horrible (Europeans, specially, used to good food) may make this a dealbreaker for booking with United Airlines again. I agreed with my Spanish fellow passenger.

Dinner was okay but the breakfast was not eatable on the flight San Francisco to Zurich.

There was no screens on board AND the WiFi didn’t work. My seat was broken and couldn’t recline so I couldn’t even sleep. The flight attendants didn’t offer anything to make it more comfortable. It was such an old cramped plane, when the person in front of me reclined I couldn’t even open my tray table. All the United ads talk about guaranteeing everyone gets a screen!

The Wi-Fi was unavailable on this flight for some reason.

The flight was delayed almost 2 hours. Bad customer service etc. I will never fly Luthansa. Ever!!!

On time take off…US cabins look tired and need of refresh!

Fine. Though no food or entertainment so the survey needs to be updated with those options.

Backpack should NOT allowed put in the flight bin , only put it under the seat. I can't find space put my carry on luggage!!! and I pay for it ! that was very bad experience

Will try to not fly with them again. Delays because of weather but got redirected to an airport where I could not make connection.

Staff didn’t care in business class. Closed the door on my mom while she was on the jetbridge and flight attendant told me she would make it from the connecting flight. They lied. My luggage was damaged on arrival. No success in filing damage claim.

Boston Logan is a crummy airport - signage is terrible or lacking in areas. Boarding seemed to be a free for all and with all the different airlines speaking, you couldn't tell who was supposed to be where and when. Plain and simple, airlines should board from the back of the plane to the front. Also someone was sitting in my seat. By the time that was figured out, I had to place my overhead behind me which made de-planing more difficult. Logan is not Lufthansa's fault so that is not on them, Boarding is on them! Still, overall it was a Good Experience flying with Lufthansa. This is not my first flight with them...

Overall, the flight was comfortable without any serious issues. Transit through Frankfurt airport was a little confusing, but not too difficult if you follow the signs

There was a screaming child behind our seats. This prevented us from getting any sleep during the night.

There was a screaming child just behind our seats. This prevented us from getting any sleep during the night!!

Staff disappeared after dinner service until breakfast, no help with beds, no help running to our gate to catch connection cause flight was late, our luggage didn’t make it, took over 24 hours to get luggage to hotel, no compensation!!

Everything was good except food. I believe there is room for improvement

Houston to Porto flight delayed landing made us miss our connection. Tried to get on standby for the next flight and even though the lady knew we wouldn’t be able to get on it and she sent us down there. We sat there three hours and then we’re told there’s no way you’re getting on this flight. So we had to go to customer service and ended up having to spend the night in Frankfurt and missed a whole day of our vacation in Porto

my flight was at 3:45 after that they delayed to 4:40 I have transit from Chicago to Frankfurt and Frankfurt to vina airport from vina to Erbil buy the Time I come to Frankfort my other flight left me I have to stay at airport all day with my 5 kids ask for help no one help me I spent at airport almost $450 just for food was horrible flight ever I call and ask for hotel from united customer service they been telling me we can’t provide any hotel I need some refund or fixed my flight when I return to America need some one respond my email

The flight as far as timings go was excellent. Unfortunately we ended up sat with someone on a night flight who had been drinking alcohol before boarding and BA staff were happily serving him more alcohol. He was very drunk which made our flight uncomfortable and awkward. My partner had this person lying on him whilst asleep. Alcohol should be served minimally. If there had been an emergency this person would not have been in a fit state to act accordingly.

First time flying with BA and I will do it again. Staff at airport and on board were very nice and helpful

they are improving. The crew from Charlotte to Tampa was outstanding. SMILING and trying to be helpful with the customers.

Wonderful service and very comfy in the bulkhead in Economy Plus! Delicious food.

The BA team at Sky Harbor is deplorable, full of unnecessary attitude and poor communication. It seems like every member of the team was looking at another to solve the problem, instead of taking agency to do so themselves. I saw no less than 6 altercations with the same gate agent where he threatened to revoke the passengers boarding pass for asking a wildly reasonable question, something as simple as where the cue to board was. I’ve complained to BA before but it seems this isn’t an issue for them, which is very disappointing

Boarding poor in London,ok in Chicago. Don’t like Heatrow/terminal5

It was very good. We got a late start by about an hour and a half. However I worked rather have that than crash. It was purely mechanical. They had our tickets ready when we came off the plane in London for the next leg. The only mishap was when we got to Lisbon my husbands luggage made or bit mine didn't. All was not lost because I did finally get it 2 days later. I was really pleased that they c made the effort.

Leg space was not enough. The meal was not satisfactory.

Liked that my American Airlines status seamlessly transferred to BA so luggage check was free. Flights were on time, boarding quick. Wish they didn’t assign connecting gate so late at Heathrow.

The entire process was flawless and as expected flying first class. The only thing that I have a complaint on...when first boarding, the plane was EXTREMELY cold; then when we were trying to sleep, it was way too hot - just better regulating (especially trying to sleep) would have made it perfect.

Book cheap flights from Boston to Sofia

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Boston to Sofia found on KAYAK in the last 72 hours.
8/6Tue
2 stops
25h 58mBOS-SOF
$305
8/7Wed
2 stops
33h 25mBOS-SOF
$321
8/7Wed
3 stops
24h 04mBOS-SOF
$359
7/14Sun
3 stops
34h 25mBOS-SOF
$382
8/6Tue
3 stops
23h 05mBOS-SOF
$384
7/15Mon
3 stops
28h 20mBOS-SOF
$418
7/13Sat
3 stops
24h 40mBOS-SOF
$446
7/14Sun
2 stops
24h 05mBOS-SOF
$450
7/13Sat
2 stops
17h 10mBOS-SOF
$512
8/6Tue
1 stop
17h 55mBOS-SOF
$522

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Last minute flights from Boston to Sofia

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Boston to Sofia that are departing in the next 10 days.
6/2Sun
multi-stop
31h 05mBOS-SOF
7/16Tue
multi-stop
11h 25mSOF-BOS
$1,023
5/31Fri
multi-stopLufthansa
15h 40mBOS-SOF
6/30Sun
multi-stopLufthansa
11h 55mSOF-BOS
$1,095
5/31Fri
multi-stopUnited Airlines
22h 50mBOS-SOF
6/30Sun
multi-stopUnited Airlines
18h 50mSOF-BOS
$1,123
5/31Fri
multi-stopSWISS
14h 00mBOS-SOF
6/30Sun
multi-stopSWISS
14h 10mSOF-BOS
$1,127
6/2Sun
multi-stop
17h 25mBOS-SOF
7/16Tue
multi-stop
28h 31mSOF-BOS
$1,135
6/2Sun
multi-stop
17h 25mBOS-SOF
7/16Tue
multi-stop
19h 00mSOF-BOS
$1,190
6/2Sun
multi-stop
32h 35mBOS-SOF
7/16Tue
multi-stop
19h 00mSOF-BOS
$1,313
6/2Sun
multi-stopTurkish Airlines
34h 05mBOS-SOF
7/16Tue
multi-stopTurkish Airlines
35h 10mSOF-BOS
$1,324
5/31Fri
multi-stopBritish Airways
22h 22mBOS-SOF
6/30Sun
multi-stopBritish Airways
26h 50mSOF-BOS
$1,601
5/31Fri
multi-stopTurkish Airlines
15h 30mBOS-SOF
6/30Sun
multi-stopTurkish Airlines
35h 10mSOF-BOS
$1,712

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Boston - Sofia Flights

Departure:

Boston (BOS)United States

Destination:

Sofia (SOF)Bulgaria

Return flight deals:

Sofia - Boston

Cabin classes:

Browse destinations: