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OSL - SEA

$373 Find cheap flights from Oslo Airport to Seattle

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Oslo Gardermoen to Seattle departing on 11/5. 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
Wed 7/10
Wed 7/17

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These are the airlines KAYAK users have selected most often from within our search results in flight searches from Oslo to Seattle.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Oslo to Seattle.
In the last 7 days travelers have searched 42,898,604 times on KAYAK, and here is why:

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Cheap flight deals from Oslo Gardermoen to Seattle (OSL-SEA)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Oslo Gardermoen to Seattle that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
7:10 am - 4:45 pmOSL-SEA
18h 35m1 stop
6:45 pm - 2:10 pmSEA-OSL
34h 25m1 stop
$373British Airways
Find Deal
Tue, Nov 5 - Wed, Nov 13
8:30 pm - 11:35 amOSL-SEA
24h 05m1 stop
7:21 am - 10:10 pmSEA-OSL
29h 49m2 stops
Thu, Sep 12 - Fri, Sep 20
6:35 am - 12:15 pmOSL-SEA
14h 40m1 stop
6:50 pm - 10:05 pmSEA-OSL
18h 15m1 stop
$443Lufthansa
Find Deal
Mon, Oct 7 - Sun, Oct 20
6:35 am - 12:15 pmOSL-SEA
14h 40m1 stop
2:15 pm - 3:45 pmSEA-OSL
16h 30m1 stop
$457Lufthansa
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Thu, Sep 12 - Fri, Sep 20
11:50 am - 10:24 pmOSL-SEA
19h 34m2 stops
3:15 pm - 6:35 pmSEA-OSL
18h 20m2 stops
$492Delta
Find Deal
Wed, Aug 14 - Thu, Sep 5
4:30 pm - 11:20 amOSL-SEA
27h 50m1 stop
6:55 pm - 3:25 pmSEA-OSL
11h 30m1 stop
$581Icelandair
Find Deal
Wed, Aug 14 - Thu, Sep 5
1:50 pm - 8:35 pmOSL-SEA
15h 45m1 stop
6:55 pm - 3:25 pmSEA-OSL
11h 30m1 stop
$665Icelandair
Find Deal
Mon, Aug 12 - Thu, Aug 22
5:05 pm - 11:30 amOSL-SEA
27h 25m1 stop
7:40 pm - 11:25 pmSEA-OSL
18h 45m1 stop
$777American Airlines
Find Deal
Wed, Aug 7 - Mon, Aug 26
9:20 am - 7:20 pmOSL-SEA
19h 00m2 stops
7:10 am - 11:05 amSEA-OSL
18h 55m2 stops
$823Delta
Find Deal
Thu, Aug 8 - Sat, Aug 24
11:15 am - 11:35 amOSL-SEA
33h 20m1 stop
7:40 pm - 10:25 amSEA-OSL
29h 45m1 stop
$842American Airlines
Find Deal
Tue, Aug 6 - Sun, Aug 25

Flights from Oslo Gardermoen to Seattle - Travel Insights & Trends

Get data-powered insights and trends into flights from Oslo Gardermoen to Seattle 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 Oslo Airport to Seattle?

The average price of all flights from Oslo Gardermoen Airport to Seattle clicked on KAYAK for each day over the last 12 months.
When flying from Oslo Airport to Seattle, you should consider leaving on a Tuesday and avoid Sundays if you are looking for the best rates. For your return to Oslo Airport, you’ll find the best rates on Thursdays and the most expensive ones on Fridays.

What is the cheapest month to fly from Oslo Gardermoen Airport to Seattle?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Oslo Gardermoen Airport to Seattle, 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 Oslo Gardermoen Airport to Seattle is November, where tickets cost $416 on average. On the other hand, the most expensive months are August and July, where the average cost of tickets is $840 and $823 respectively.

How far in advance should I book a flight from Oslo Gardermoen Airport to Seattle?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Oslo Gardermoen Airport to Seattle, 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 Oslo Gardermoen Airport to Seattle, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 53 days before departure.

Which airlines provide the cheapest flights from Oslo Airport to Seattle?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the best return deals on flights connecting Oslo Airport to Seattle were found on British Airways ($373) and Air Canada ($433). British Airways proposed the cheapest one-way flight at $625.

Good to know

Low season

January

High season

June

Cheapest flight

$373
Best time to beat the crowds with an average 2% drop in price.
Most popular time to fly with an average 11% increase in price.
Flight from Oslo Airport to Seattle

When to book flights from Oslo Gardermoen to Seattle

Are your dates flexible? Find out the best times to travel from Oslo Gardermoen to Seattle 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 Oslo Airport to Seattle flights

  • What is the cheapest flight from Oslo Gardermoen Airport to Seattle?

    In the last 3 days, the lowest price for a flight from Oslo Gardermoen Airport to Seattle was $625 for a one-way ticket and $373 for a round-trip.

  • Do I need a passport to fly between Oslo Airport and Seattle?

    Yes

  • Which aircraft models fly most regularly from Oslo Airport to Seattle?

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

  • Which airline alliances offer flights from Oslo Airport to Seattle?

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

  • Which is the best airline for flights from Oslo to Seattle, Delta or Finnair?

    The two airlines most popular with KAYAK users for flights from Oslo to Seattle are Delta and Finnair. With an average price for the route of $789 and an overall rating of 8.0, Delta is the most popular choice. Finnair is also a great choice for the route, with an average price of $501 and an overall rating of 7.7.

  • How does KAYAK find such low prices on flights from Oslo Airport to Seattle?

    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 Oslo Airport to Seattle.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Oslo Airport 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 Oslo Airport to Seattle?

    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 Seattle with an airline and back to Oslo Airport with another airline. Booking your flights between Oslo Airport and SEA 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 Oslo Airport to Seattle?

    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 Seattle from Oslo Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top 5 airlines serving from Oslo Gardermoen to Seattle

 
See real verified KAYAK customer reviews for airlines flying from Oslo to Seattle. 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 Oslo Gardermoen to Seattle? 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.
8.0
DeltaOverall score based on 10295 reviews
8.2Boarding
7.9Comfort
8.6Crew
8.0Entertainment
7.4Food
Airline reviews

Delta crushed it. Flight attendant in first was attentive and just never stopped. Honestly one of the best domestic flights I’ve been on.

10.0 ExcellentDonald, May 2024FLL - SEA
Read more about Delta reviews

Delta crushed it. Flight attendant in first was attentive and just never stopped. Honestly one of the best domestic flights I’ve been on.

Delta is one of the best airlines I have flown

It was a Red-Eye flight so was not comfortable enough to sleep, but seat was as expected. Crew was great and in-flight entertainment was excellent. Flight was smooth

Standard economy seats on Deltas 767 were better than Alaska premium seats on their 737 MAX9; more legroom, wider seats. Entertainment was great, no ipad or phone required. Could have included a meal service.

Plane was turned around due to fog half way into the flight, Delta did not properly direct passengers to stay on same flight and instead failed to properly rebook on Alaska

The boarding process was terrible especially with an indirect flight Chicago to Seattle to San Diego was terrible talking about we overbooked a flight idk if I’d take this airline ever again we got off our flight from Chicago to Seattle and we traveled for business and they told us our connecting flight was over booked and their was no seats asking people to take a delayed next flight and they don’t tell anyone coughing to wear masks seats 30A-B were terrible during the flight no one wants to sit next to people coughing all around I don’t want to be sick traveling for work or get sick anytime it’s very upsetting the staff doesn’t take this stuff serious to tell them to wear masks when they see people coughing and sneezing

Flight was on time, the crew was personable & professional, & the plane arrived early which was nice.

This flight landed early, but deplaned late. We were stuck sitting and waiting for a gate for over an hour

My flight was very clean and the location was comfortable. The service was great. A satisfying flight!

I appreciated being upgraded. I was very disappointed with my 13 hr layover in Seattle to geg, while my friends who flew Alaska made it home as scheduled. I had to reserve a hotel on my dime.

Paid for premium economy had no tv the whole time the crew tried to reset/reboot but would not work they said they would put a trouble ticket in for it. We had 3 seats my tv was the only one that didn't work. They cancelled our flight re worked us on another that left us at airport over night on the floor I have a ten year old and a 78 diabetic mother which also had shingles and suffers from nerve pain in legs and back. Requested wheelchair service at all airports after the re route NO wheelchair service was there to help. WORST experience we have ever had. Went to American airlines assistance it was closed. I AM FURIOUS!!! I expect some sort of compensation from this traumatic experience and no need for flying points we don't plan on using American airlines again!!!!

The flight was sequentially delayed until it reached two hours. Apparently one pilot failed to show up.

This is by far the worst experience I have had with American Airlines. The start of this trip was a complete disaster. I purposely planned my trip so that I would weather any delays so that I could make very important meeting at the Pentagon. My flight was cancelled because of maintenance and I was put on the first flight the next day but I was late to the meeting. After a long week at the Pentagon I just wanted to go home and my flight home which was early in the day was delayed. Eventually the flight was delayed until the next day. I was not authorized a hotel room because DCA was my point of origin. So I paid for a hotel out of pocket. The flight this morning was boarded then deplaned because the aircraft was hot. The flow of information was not happening in DCA and made it worse when the news was bad. I am going to take a break from American for my next few military flights. Hopefully whatever has been going on with American Airlines will be resolved.

We had a 2 hour delay. The seats were smaller than most other airlines. The person in front of us wanted to lay back and we had to stop her because she was pressing against my girlfriend’s legs. We had to ask her to sit up and not lay back due to the lack of room.

Everything was fine once we actually got on our flight. It was more then annoying they canceled (delayed) our flight. We lost out on a day of our trip along with money on our stay. Plus we had to book another hotel. So expensive.

This flight was canceled and delayed several times without explanation. The plane was freezing cold and no wifi for messaging. Getting off the plane was terribly unorganized and felt like it took forever….

The flight was delayed several times without explanation. The seats were terribly uncomfortable and wifi isn’t included. All these make for a less than ideal flight.

The flights was delayed by hours and it was the firmest landing I have experienced in my life. My back is still sore.

Internet service was erratic. Crew service was poor and slow. My luggage on this non-stop flight was lost and not recovered

Terrible. I didn’t fly and I had an important meeting the next day.

If you are looking for the bare bones in an airline - this will do. The boarding process in Newark and Iceland was so disorganized, I thought there was some sort of emergency. No - this is what they do every time. After a full plane was ready to board in Newark, Icelandic Air insisted that everyone have a paper ticket in hand. Mass chaos ensued as dozens of passengers then had to line up in a different queue. On the 5-hour flight, two tiny glasses of water were dispensed. Yes - I could have ordered food, but not even a pretzel was given for free. In Iceland, a full plane of people waited over twenty minutes in a cattle shoot hallway while the plane was readied. Why were we lined up so early? Kids were screaming and some older adults could not stand for that length of time and also hold luggage. Flight was pleasant with the same two glasses of water -one in a tiny paper cup. Movie selection decent but headphones will cost you $5.00. What airline does that? Charge me five dollars more and give them out to passengers. Shame on you for being so cheap!

So Iceland Air is one step above Spirit Airlines. They do not feed you unless you pay for it or are in Saga Class. So, bring your food. They have a drink service, but it's in a large Dixie cup. Ask for the can, that is the only way you'll get a real drink. Also, we missed our connecting flight so they put us up in a flea-bag motel. Don't get me wrong, the staff was nice and friendly, however, there was no shower gel or shampoo in the hotel. We have to go to the corner store to pick some up. The room was not in great shape. Holes in the bathroom, a badly repaired ceiling in the room. The window was warn out. So, you get the just of how bad it was.

I didn't have food nor entertainment. Lots of leg room and seat was comfortable

Food and staff were excellent. Seats on Saga (business class) are comparable to domestic first class of US Airlines, regarding space and recline. Entertainment options had little international component.

Flight delayed Delay to the gate upon arrival Baggage took more than an hour so we missed our connecting!!! Terrible experience!

There is no food without paying $. Only soft drinks are included in your fare.

Some drinks and basic snack will be good. Water should be served at least once an hour. Blankets for folks who might be cold.

Pros: "Flight was relatively empty. Professional crew, comfortable seats"
Cons: "I think they skipped me with food service. Checking up on passengers who may have been sleeping would be nice. Headphones need to be purchased. Limited entertainment options."
Cons: "Communication about international COVID requirements before the day of departure."
Pros: "My seat cushion was out of alignment so not great. But I like the two side seat configuration."
Cons: "Boarding is a zoo. Board by row. It’s faster."

Terrible. Missed our flight to Newark as well as our flight to London. Complete disaster

The flight was wondering, especially the special assistance from airplane to airplane!

They canceled our flight last minute and we had to get another flight with twice the cost

Captain waited 45 minutes for late passengers boarding from Washington DC to Munich which was nice for them but caused our luggage to miss boarding our connection on to Bucharest. We then did not receive our luggage for about 48 hours after landing which was very inconvenient for our travel.

The worst experience of my life and I have been flying for 33 years

We were very upset when we checked in for our flight to be charged 208,00 euro for luggage fees when the site clearly states we are authorized one checked bag each and one carry-on. We have never experienced anything like this with Lufthansa and are very disappointed. We should be reimbursed this erroneous charge. I can forward all receipts once I am able to scan the them.

Poor, we had 1 hour to grab our checked luggage, go through customs, recheck bags and run across terminals to make our United flight. Poorly planned connections.

Check in in Albuquerque was awful. The people were great but they were over loaded. The procedures were terrible. We got through fine but it took 90+ minutes.

Crew was very nice and helpful. It was a good flight experience.

Efficient boarding. Good flight but seats were quite uncomfortable considering we'd already been sitting on two flights, total 13 hours or so. Would have liked to have prices on the menu of amenities on the plane. We could have used more water. Restrooms and nonalcoholic beverages at no extra cost, not much else. I realize these were discount tickets, and the airline has to break even, so I can't say we were expecting amenities to be plentiful. Still, it's nice with long flights to discover a few. Very pleasant crew though.

Every host and pilot were very professional. My next flight would be upgraded from economy to the next group.

I asked for a window seat and when I got on the plane 24A did not have a window so was very not happy, but good and entertainment was good and the staff was very good, so the only complaint was the seating.

Flights were actually with Aer Lingus outward and American Airlines & Aer Lingus on the return journey. Outward flight with Aer Lingus was good but the return flight with them was not so good as our seats were in a poor condition (15A & 15C) and looked like they needed replacing! The American Airlines flight from Miami to JFK New York was good and the seats were very comfortable and spacious (32D & 32E)

Awful. Flight delayed and we missed our long flight to Rome. It has been a nightmare and we have still not arrived. It was NOT a weather delay, just poor planning by AA

My seat was in a good row. In our section it was the first row. But it was difficult tooperate seat entertainment features > table, screen, even though I often fly.

Boarding was as fast and efficient as possible. The flight crew were amazing and extremely friendly. We enjoyed our flight.

There was nothing to like besides the crew. The comfort of the airplane was poor (seat did not work properly and it was not comfortable). The “entertainment” system did not work! On a flight that last nearly eight hours, (which is advertised as having excellent entertainment options), that is unacceptable! Passengers should have been given free WiFi for the flight. The food served on the flight was below school lunch grade food. (With one exception, the ice cream snack). The chicken entree was tough and nearly impossible to cut and eat. The “pizza” served later in the flight was worse. The chicken pizza had a dry crust and the “toppings” were equally not enjoyable. The amount of chicken and cheese were almost non existent. Overall not a flight we would want to repeat!!

There was a problem in the luggage because there were not porters

2-1/2 hours on tarmac after arrival to DFW, lost connection to London, 3 hours wait for customer assistance, stayed on our own account in DFW, no replacement flight for 5 days, had to cancel the entire travel and return to Monterrey today.

My worst flying experience so far. This flight was delayed a total of 42 hours and diverted to New York before it was finally cancelled. It was delayed 4 and a half hours in London. As we were scanning our boarding passes at the gate they advised that the flight was being diverted to JFK since the delays caused us to missed the open hours for Charlotte international customs and immigration. We were assured multiple times by airport personnel, flight attendants, and the Pilot that we would land at JFK go through customs and immigration and then reboard the plane to fly to Charlotte in the same night. When we landed in New York the pilot advised us as we were retrieving our carry on luggage that we were delayed till 10am the next morning and to see guest services to get a room for the night. During this time I had to purchase a room for a family member in Charlotte which drove over 4 and a half hours to pick us up from Charlotte. This could have been avoided if American Airlines had been up front about the delay. Then after standing in line for over 2 and a half hours at guest services we were taken by taxi to a hotel 30 minutes out of the way. Luckily I looked for other flights that night and found one at 8 am to get on. The initial flight which we were scheduled to fly to charlotte in was delayed 12 more times and was finally cancelled 42 hours after it was supposed to land. I am unaware of what happened to the guest that were supposed to fly on the flight after we were placed on another flight but 42 hours in delays for a direct flight is absolutely ridiculous.

Book cheap flights from Oslo to Seattle

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Oslo to Seattle found on KAYAK in the last 72 hours.
6/18Tue
1 stopBritish Airways
25h 10mOSL-SEA
$625
7/3Wed
3 stops
34h 22mOSL-SEA
$630
6/18Tue
2 stops
23h 35mOSL-SEA
$646
6/25Tue
3 stops
32h 07mOSL-SEA
$654
6/18Tue
1 stopIcelandair
12h 50mOSL-SEA
$658
6/18Tue
2 stops
28h 30mOSL-SEA
$662
6/25Tue
2 stops
21h 50mOSL-SEA
$700
6/18Tue
2 stopsairBaltic
24h 35mOSL-SEA
$739
7/2Tue
4 stopsEthiopian Air
57h 22mOSL-SEA
$1,667
6/18Tue
4 stopsEthiopian Air
58h 05mOSL-SEA
$1,754

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Last minute flights from Oslo Gardermoen to Seattle

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 Oslo to Seattle that are departing in the next 10 days.
6/12Wed
multi-stopAmerican Airlines
19h 12mOSL-SEA
6/18Tue
multi-stopAmerican Airlines
25h 00mSEA-OSL
$544
6/12Wed
multi-stopBritish Airways
32h 45mOSL-SEA
6/18Tue
multi-stopBritish Airways
25h 00mSEA-OSL
$567
6/11Tue
multi-stopAmerican Airlines
21h 08mOSL-SEA
6/17Mon
multi-stopAmerican Airlines
25h 00mSEA-OSL
$639
6/11Tue
multi-stopBritish Airways
19h 05mOSL-SEA
6/17Mon
multi-stopBritish Airways
20h 05mSEA-OSL
$662
6/12Wed
multi-stopIcelandair
15h 45mOSL-SEA
6/18Tue
multi-stopIcelandair
11h 45mSEA-OSL
$673
6/11Tue
multi-stopIcelandair
13h 05mOSL-SEA
6/17Mon
multi-stopIcelandair
28h 35mSEA-OSL
$675
6/11Tue
multi-stopTAP AIR PORTUGAL
33h 38mOSL-SEA
6/17Mon
multi-stopTAP AIR PORTUGAL
22h 45mSEA-OSL
$2,278
6/12Wed
multi-stopTAP AIR PORTUGAL
33h 18mOSL-SEA
6/18Tue
multi-stopTAP AIR PORTUGAL
39h 30mSEA-OSL
$2,712
6/12Wed
multi-stopEthiopian Air
58h 05mOSL-SEA
6/18Tue
multi-stopEthiopian Air
49h 20mSEA-OSL
$2,882
6/12Wed
multi-stopEthiopian Air
58h 05mOSL-SEA
6/18Tue
multi-stopEthiopian Air
49h 20mSEA-OSL
$3,022

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Oslo Airport - Seattle Flights

Departure:

Oslo Airport (OSL)Norway

Destination:

Seattle (SEA)United States

Return flight deals:

Seattle - Oslo Airport

Cabin classes: