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ONT - BUF

$101 Find cheap flights from Ontario to Buffalo

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Buffalo departing on 8/24. 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

Search hundreds of travel sites at once for deals on flights to Buffalo

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Buffalo, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Buffalo, as well as popular online travel agencies
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 Ontario to Buffalo (ONT-BUF)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Buffalo 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
10:41 am - 8:42 pmONT-BUF
7h 01m1 stop
3:13 pm - 11:56 pmBUF-ONT
11h 43m1 stop
$198Frontier
Find Deal
Sat, Aug 3 - Thu, Aug 8
12:39 am - 8:42 pmONT-BUF
17h 03m1 stop
3:13 pm - 11:56 pmBUF-ONT
11h 43m1 stop
$199Frontier
Find Deal
Fri, Aug 2 - Thu, Aug 8
6:00 am - 4:48 pmONT-BUF
7h 48m1 stop
6:15 am - 1:46 pmBUF-ONT
10h 31m1 stop
$236American Airlines
Find Deal
Sat, Aug 31 - Wed, Sep 4
6:00 am - 4:48 pmONT-BUF
7h 48m1 stop
6:15 am - 4:02 pmBUF-ONT
12h 47m2 stops
$241American Airlines
Find Deal
Sat, Aug 31 - Wed, Sep 4
11:36 pm - 11:59 amONT-BUF
9h 23m1 stop
12:45 pm - 10:05 pmBUF-ONT
12h 20m1 stop
$248JetBlue
Find Deal
Wed, Sep 11 - Wed, Sep 18
11:47 pm - 10:30 amONT-BUF
7h 43m1 stop
5:00 pm - 10:32 pmBUF-ONT
8h 32m1 stop
$323JetBlue
Find Deal
Mon, Aug 19 - Tue, Aug 27
6:25 pm - 9:37 amONT-BUF
12h 12m2 stops
7:00 am - 5:22 pmBUF-ONT
13h 22m2 stops
$346United Airlines
Find Deal
Wed, Sep 11 - Wed, Sep 18
6:45 pm - 10:06 amONT-BUF
12h 21m2 stops
7:00 am - 12:32 pmBUF-ONT
8h 32m2 stops
$351United Airlines
Find Deal
Tue, Aug 27 - Sun, Sep 1
11:30 am - 11:58 pmONT-BUF
9h 28m1 stop
3:59 pm - 10:57 pmBUF-ONT
9h 58m1 stop
$525Delta
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Thu, Jul 4 - Thu, Jul 11
6:59 pm - 8:16 amONT-BUF
10h 17m2 stops
6:00 am - 10:13 amBUF-ONT
7h 13m1 stop
$561Delta
Find Deal
Thu, Jul 18 - Mon, Jul 22

Flights from Ontario to Buffalo - Travel Insights & Trends

Get data-powered insights and trends into flights from Ontario to Buffalo 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 Ontario to Buffalo?

The average price of all flights from Ontario to Buffalo clicked on KAYAK for each day over the last 12 months.
If your flying dates are flexible, you should consider flying to Buffalo on a Sunday, as we generally find the cheapest rates on that day for this route. On the other hand, Saturday is the most expensive day to fly from Ontario to Buffalo. For your return ticket, we recommend flying on a Tuesday and avoiding Thursdays for the best deals.

What is the cheapest month to fly from Ontario to Buffalo?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Ontario to Buffalo, 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 Ontario to Buffalo is September, where tickets cost $288 on average. On the other hand, the most expensive months are July and August, where the average cost of tickets is $446 and $408 respectively.

How far in advance should I book a flight from Ontario to Buffalo?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Ontario to Buffalo, 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 Ontario to Buffalo, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 39 days before departure.

Which airlines provide the cheapest flights from Ontario to Buffalo?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 3 days, Frontier offered the best one-way deal for that route, at $101. KAYAK users also found Ontario to Buffalo round-trip flights on Frontier from $198 and on American Airlines from $236.

Good to know

Low season

January

High season

September

Cheapest flight

$101
Best time to beat the crowds with an average 25% drop in price.
Most popular time to fly and prices are also 9% lower on average.
Flight from Ontario to Buffalo

When to book flights from Ontario to Buffalo

Are your dates flexible? Find out the best times to travel from Ontario to Buffalo 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 Ontario to Buffalo

  • What is the cheapest flight from Ontario to Buffalo?

    In the last 3 days, the lowest price for a flight from Ontario to Buffalo was $101 for a one-way ticket and $198 for a round-trip.

  • Do I need a passport to fly between Ontario and Buffalo?

    No, a passport isn't needed to fly from Ontario to Buffalo. However, local authorities might ask for an official ID.

  • Which airports will I be using when flying from Ontario to Buffalo?

    Ontario airport is called Ontario and the only airport in Buffalo is Buffalo.

  • Which aircraft models fly most regularly from Ontario to Buffalo?

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

  • Which airline alliances offer flights from Ontario to Buffalo?

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

  • Which is the best airline for flights from Ontario to Buffalo, Delta or JetBlue?

    The two airlines most popular with KAYAK users for flights from Ontario to Buffalo are Delta and JetBlue. With an average price for the route of $492 and an overall rating of 8.0, Delta is the most popular choice. JetBlue is also a great choice for the route, with an average price of $614 and an overall rating of 7.6.

  • How does KAYAK find such low prices on flights from Ontario to Buffalo?

    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 Ontario to Buffalo.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Buffalo from Ontario 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 Ontario to Buffalo?

    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 Buffalo with an airline and back to Ontario with another airline. Booking your flights between Ontario and BUF 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 Ontario to Buffalo?

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

See more FAQs

Top 4 airlines serving from Ontario to Buffalo

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Buffalo. 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 Ontario to Buffalo? 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
7.4Food
7.9Comfort
8.0Entertainment
8.2Boarding
8.6Crew
Airline reviews

3 hours late and all they have is was a $12 meal voucher. That’s not even enough to cover fast food.

2.0 MediocreCraig, Jun 2024CVG - LGA
Read more about Delta reviews

3 hours late and all they have is was a $12 meal voucher. That’s not even enough to cover fast food.

Friendly flight attendants. Comfort plus seats were very comfortable and had lots of leg room. 10A and 10 B.

Our flight to Zurich was delayed by almost 3 hours, so we missed our next flight. There was no indication it would be delayed this much. We were told the gate had changed and then it apparently took over 2 hours to load the "catering" on the plane. We were not compensated in any way for the trouble.

The 1st class male crew member was very pleasant - the short female with round glasses , maybe in 50’s had no personality- never spoke when delivering my food, drink, & never smiled the whole trip! In fact looked annoyed when the boarding proses was happening- I would never hire this woman - unfriendly . Have never dealt with a crew member like her-

A regional sized plane was used for a cross country flight with no overhead bin space. I had to "pink check" my laptop and my medications. I was NOT pleased!!!!

Best airline! Always friendly and welcoming. Skyclub was great and loved the fast free wifi on board. I also love that you can pre-order your meal on the app!

The gate area was incredibly short staffed, with one representative manning 4-5 flights, which caused a 3 hr delay in boarding even though the plane was all ready to leave. Other flights also were delayed because of this. The flight crew was awesome and I feel bad for the only gate worker on call, but Delta needs to hire more employees.

It was a crowded flight. They did the best they could.

Boarding was great. The flight landed early. It took the crew over an hour and a half to bring out drinks. I paid to upgrade my seat to Comfort+ only to be near a crying/screaming baby who was seldom quiet. Noise-cancelling earbuds didn’t even help. Waste of money to upgrade.

Boarding was a sh!t show. JFK BOARDING was awful. The agent called three sections at a time Clogging the area then yelling at people to not block the walk way. How are you going to call delta one , premium select and comfort plus at once and the yell at highest paying passengers. Need to do a lot better and the flight attendants in the galley need to understand that their voices travel. They were talking about others and everyone in the cabin heard them

The walk from baggage claim to the taxi is very difficult for older people I will never fly into JFK again. It is physically challenging

Overall fine but both ways for this trip was delayed.

Flight was delayed by almost 5 hours. Suitcase was not loaded despite the flight being near empty (my colleagues’ suitcases did reach JFK, unlike mine). Had to argue on phone to get JetBlue to deliver the case to my hotel. Never again

Great. Loved that there was WiFi on flight to keep in touch and excellent service of beverages and snacks.

great flight. Pilot was communicative, flight attendants were excellent. Really nice experience except my tv didn’t work.

Overall, the flight was better than the flight I took to go to Florida, which had a bunch of problems. The crew is really nice and the plane was new so it had a small problem when we were on the runway, but the flight itself was great. They even made some time back up, which is always a good thing.

Everything was good except for deplaning in NY. Took way too long!!

Jet Blue keeps getting iit wrong. 4 hour mechanical delay followed by terrible boarding experience. This is my third horrific jet blue flight in 2024. I am going to try to avoid this loser in the sky

no wifi and the aircraft was very old with tiny 4” screens.

After we landed, we were held on the plane for 30 minutes. There was no one at the gate once we landed and we forced to sit on a plan that had already over an hour delayed.

Worst experience flying American Airlines. I fly with them often, so I was super disappointed in the service I received at gate 30 in LGA on May 24, mid-day. The flight was delayed twice. I was patiently waiting in the American Airlines lounge when I received the notice on my app that the plane was boarding 45 minutes before its newly re-scheduled take off of 4 pm (from the orginal 1:45 pm then 3:00 pm). It took me 5 min to travel from the lounge to the gate and when I arrived there at 3:20 flight gate attendant told me the flight had closed and that they announced for passengers multiple times. I showed them the notification on my app and they were really rude and unempathetic. The person who rescheduled my flight at customer service wasn't any happier but was at least helpful in getting me on the next flight.

Was lucky to have a employee at the AA checkin counter that had compassion and understood they ordeal that we went through with our original flight being diverted, needing to stay in the aircraft and then flying to the original destination; adding hours to the trip and forcing us to miss our connection and our rebooked connection. She was able to get up on standby on the highest priority on the next flight to the closest airport we need to be at and it all worked out despite being many hours late.

I like the boarding process, it was fast. The seat doesn’t have a TV for a long flight and food wasn’t served, just snacks.

Not being able to purchase my check in baggage online was a negative.

Comfort of seats, ease of boarding. Food selection could be better

I arrived to the airport 2 hours before my American Airlines flight was scheduled to take off. I have TSA pre-check. The airport was crazy packed when I arrived. After momentarily standing in the pre-check line, the TSA agent said that I am not pre-check. Of course I said that I am because I entered my KTN number on all my traveling sites and programs. I had to get out of line and go back to the AA counter to discover that American Airlines did not add my KTN to my boarding pass. I had to call TSA to find out my number, then have AA enter it onto my boarding pass. The emblem would not load onto my boarding pass. By this time, I decided to use my Clear in order to get through TSA but the line was ridiculous long. By the time I made through TSA, I missed my 11:08am flight and was re-booked for the 5:30pm. This is after the AA employee told me I should have gotten to the airport early. AA use to be a dependable airline not I use them only if I have too.

Horrible people at the gate, they force me to check in my carry on, even thought no one behind me has to do it. I had to get out of the airport in NY to get my bag and go thru security again on my way to Honk Kong. The worst part is the employee threatened me with loosing the flights if don’t comply.

Cut off carry ons, had to check, got on and there was plenty of bin space. Disappointing.

One of the worst flights I have ever taken Delayed over an hour without communication from the crew; very scary Entertainment not working Crew NASTY cabin cold

May never fly American again Delay in take off WITHOUT EXPLANATION Cabin freezing Crew NASTY entertainment did not work entire flight

8 hr delay. had to buy another ticket with another airline

I appreciated the upgrade to free cary-on bag and seat selection at no charge

Flight was delay 9hrs and nothing was provided at airport, had to go and get a room to sleep in, paid for Uber back and fort with no offers until we landed back home a 1hr later for a $75 voucher for a future flight.

Worst experience I have seen. The flight was cancelled without any reason.

Check in online was easy. Seats aren’t very comfortable

Over an hour delay in departure but I was notified beforehand. Another delay on tarmac upon arrival at LGA. We ended up departing the plane almost 2 hours later than expected

Frontier is a crappy airline nothing about it is honest

Our flight was delayed an hour, then when we got to board our flight finally, we were waiting in our seats for take off for 45 minutes before it was communicated that there was a maintenance issue therefore we waited on the plane for over an hour while that was resolved. We did not get to Phoenix until almost 3 hours after we were originally supposed to. This was the first and last time I will be flying Frontier.

There were 3 leg for the trip and each leg was delayed by 90 minutes or more. The boarding process takes forever with people waiting on the jetway even though most folks do not have carry-on. The whole process is poorly managed.

They cancelled the flight then did nothing to help us rebook. It was awful - I won’t fly with them again

Book cheap flights from Ontario to Buffalo

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Ontario to Buffalo found on KAYAK in the last 72 hours.
8/24Sat
1 stopFrontier
7h 16mONT-BUF
$101
8/7Wed
1 stopFrontier
10h 24mONT-BUF
$102
7/22Mon
1 stopJetBlue
7h 43mONT-BUF
$124
7/20Sat
1 stopJetBlue
7h 31mONT-BUF
$151
8/6Tue
2 stopsUnited Airlines
14h 36mONT-BUF
$173
8/23Fri
2 stopsUnited Airlines
12h 12mONT-BUF
$193
6/25Tue
2 stopsAmerican Airlines
10h 57mONT-BUF
$234
6/19Wed
2 stopsAmerican Airlines
10h 57mONT-BUF
$249
6/25Tue
1 stopDelta
9h 29mONT-BUF
$298
6/16Sun
1 stopDelta
9h 29mONT-BUF
$299

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Last minute flights from Ontario to Buffalo

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 Ontario to Buffalo that are departing in the next 10 days.
6/14Fri
multi-stopDelta
10h 11mONT-BUF
6/16Sun
multi-stopDelta
7h 20mBUF-ONT
$575
6/12Wed
multi-stopAmerican Airlines
11h 59mONT-BUF
6/17Mon
multi-stopAmerican Airlines
9h 22mBUF-ONT
$580
6/11Tue
multi-stopDelta
22h 05mONT-BUF
6/18Tue
multi-stopDelta
9h 57mBUF-ONT
$582
6/11Tue
multi-stopAmerican Airlines
7h 54mONT-BUF
6/16Sun
multi-stopAmerican Airlines
8h 14mBUF-ONT
$634
6/12Wed
multi-stopJetBlue
7h 31mONT-BUF
6/15Sat
multi-stopJetBlue
8h 38mBUF-ONT
$664
6/13Thu
multi-stopFrontier
26h 36mONT-BUF
6/21Fri
multi-stopFrontier
8h 25mBUF-ONT
$668
6/12Wed
multi-stopUnited Airlines
12h 16mONT-BUF
6/18Tue
multi-stopUnited Airlines
15h 22mBUF-ONT
$685
6/12Wed
multi-stopFrontier
6h 49mONT-BUF
6/14Fri
multi-stopFrontier
8h 29mBUF-ONT
$698
6/11Tue
multi-stopJetBlue
8h 02mONT-BUF
6/15Sat
multi-stopJetBlue
8h 38mBUF-ONT
$723
6/13Thu
multi-stopUnited Airlines
12h 16mONT-BUF
6/17Mon
multi-stopUnited Airlines
13h 28mBUF-ONT
$740

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Ontario - Buffalo Flights

Departure:

Ontario (ONT)United States

Destination:

Buffalo (BUF)United States

Return flight deals:

Buffalo - Ontario

Cabin classes: