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ONT - BUF

$100 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 5/4. 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
Fri 5/24
Fri 5/31

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 45,119,101 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
7:26 am - 8:53 pmONT-BUF
10h 27m1 stop
7:12 pm - 11:59 pmBUF-ONT
7h 47m1 stop
$138Frontier
Find Deal
Wed, May 8 - Sat, May 11
12:59 am - 8:53 pmONT-BUF
16h 54m1 stop
7:12 pm - 6:31 amBUF-ONT
14h 19m1 stop
$150Frontier
Find Deal
Tue, May 7 - Sat, May 11
11:40 pm - 10:42 amONT-BUF
8h 02m1 stop
3:35 pm - 10:09 pmBUF-ONT
9h 34m1 stop
$248JetBlue
Find Deal
Mon, May 20 - Thu, May 30
11:40 pm - 10:42 amONT-BUF
8h 02m1 stop
3:35 pm - 10:09 pmBUF-ONT
9h 34m1 stop
$275JetBlue
Find Deal
Mon, May 20 - Fri, May 31
11:30 am - 11:59 pmONT-BUF
9h 29m1 stop
6:00 am - 10:20 amBUF-ONT
7h 20m1 stop
$296Delta
Find Deal
Sat, Jun 8 - Tue, Jun 11
12:50 pm - 10:23 pmONT-BUF
6h 33m1 stop
11:32 am - 6:48 pmBUF-ONT
10h 16m2 stops
$310American Airlines
Find Deal
Fri, May 10 - Sat, May 11
7:31 am - 10:32 pmONT-BUF
12h 01m2 stops
11:32 am - 6:48 pmBUF-ONT
10h 16m2 stops
$315American Airlines
Find Deal
Fri, May 10 - Sat, May 11
6:00 am - 6:25 pmONT-BUF
9h 25m1 stop
6:00 am - 11:40 amBUF-ONT
8h 40m1 stop
$347Delta
Find Deal
Sat, May 25 - Mon, May 27
6:25 pm - 9:37 amONT-BUF
12h 12m2 stops
10:25 am - 9:31 pmBUF-ONT
14h 06m2 stops
$472United Airlines
Find Deal
Fri, Sep 13 - Wed, Sep 18
6:00 am - 11:36 pmONT-BUF
14h 36m2 stops
10:25 am - 9:31 pmBUF-ONT
14h 06m2 stops
$522United Airlines
Find Deal
Thu, Aug 15 - Mon, Aug 19

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, Friday is the most expensive day to fly from Ontario to Buffalo. For your return ticket, we recommend flying on a Monday 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 $278 on average. On the other hand, the most expensive months are July and June, where the average cost of tickets is $506 and $502 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 1 week 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 $100. KAYAK users also found Ontario to Buffalo round-trip flights on Frontier from $138 and on JetBlue from $248.

Good to know

Low season

February

High season

September

Cheapest flight

$100
Best time to beat the crowds with an average 41% drop in price.
Most popular time to fly with an average 20% increase in price.
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 $100 for a one-way ticket and $138 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?

    oneworld, Star Alliance, 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 $469 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 $478 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 11004 reviews
8.2boarding
8.6crew
7.9comfort
8.0entertainment
7.5food
Airline reviews

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

6.0 GoodNetty, Apr 2024SYR - JFK
Read more about Delta reviews

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 main person that was coordinating everything was a short white/light skin Spanish man and he was very rude. It honestly made me feel like it was everyone’s First day at work. His announcements were very not reasonable and they did not make sense. The stewardess on the flight that made the announcements she didn’t even know what she was talking about she sounded inebriated. There were no snacks or drinks on our flight there wasn’t even much turbulence. This flight was not enjoyable nor was it what a Delta flight should be and just this past week I flew with Delta 3 times.

Horrible. First delta flight was delayed. I ran to my connecting flight and arrived to the gate 13 mins before departure. I told the gate agent “I’m here”, she told me flight was closed while giving my already confirmed seat to an stand by passenger. I said again “madam, I’m here with my confirmed seat” and she said “no you’re not here@ and gave two stand by people a boarding pass and let them board. I asked “madam, why do you do that?”, and she repeated “you’re not here”. That was very rude. I’m disappointed of delta. It used to have a good customer service. Things have changed, but not for good.

full flihgt but crew and passengers all helped eachother we landed early! however we then had to wait 40 minutes on the tarmac to get into the gate there were people trying get connecting flights, assume its an airport issue but still frustrating

We flew early evening on New Year's Eve. Our plane was less than half full... Great for the passenger experience -- not so much for the airline lol. Comfortable, spacious, smooth flight -- and early arrival!

The crew was horrible. Cleo was the most unwelcoming flight attendant I’ve ever had.

The flight was overbooked and the staff at the gate started calling for volunteers to drop out and offering incentives. That delayed the flight

Do not get fooled by the term “Delta One” flat bed! The seats were super narrow. The ottoman for the feet was so narrow that when you recline the seat in flat bed position, you can only fit one foot in the 8” width space. There was only 1 flight attendant for First Class. The breakfast took 2 hours to get served. Instead of offering French Toast, the served bread pudding. The champagne with orange juice or Mimosa tasted terrible. Almost all the movies offered were ridiculously old. For a long flight from San Francisco to NY, it was frustrating! I DO NOT RECOMMEND this flight!!!

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.

Flawless trip. Pilot came out and introduced himself, welcomed everyone, made a light joke to put everyone at ease. Arrived quite early.

JetBlue's check-in was great, but there was an in-flight flight attendant who was very rude and unkind. I didn't realize that the bathrooms were already locked 30 mins prior to landing and needed to use the restroom. Instead of politely asking me to return, she rudely told me, 'No, bathrooms are locked! Go back to your seat!' The flight was more than an hour delay, which made me almost miss my connecting flight. I understand the reasoning, but the action they took to get a hold of maintenance was time consuming. It took them so long to get a hold of maintenance and for maintenance to get started. Most importantly, my 3 checked baggages are missing! I'm writing this review 3 days after my arrival to the Philippines, and my 3 checked baggages, where my wedding dress is, are all missing!

Safe takeoff and landing Better snacks and coffee. Headphones for the TV monitors.

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

It was wonderful upgrading to first. Plane was so cold thou. Crew was great. Wish there was a food option in first for such a long flight. Doesnt matter the time of day. Chintzy.

The flight was so short that the lack of leg room didn't bother me for long. The plane was smaller so only two seats per row and there were chargers. However, they didn't serve any snacks.

We liked quick boarding and on time departure. Seats were very uncomfortable.

Horrible trip. I won't fly AA again Boarding was a nightmare because they squeezed people into the waiting like sardines. My connection was 30 minutes and the run to the gate was horrible. Then the flight was canceled AFTER boarding. The Flight attendants did not know what to do and gave out the wrong instructions. They finally sent us to a different gate. Again, the waiting was like a sardine tin. The flight was okay and my baggage arrived fine.

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

The process of buying the ticket and navigating all the hidden charges that Frontier throws at you was a terrible experience. The actual airport experience and flying was fine.

The truck that was refueling the plane drove away with the hose still connected to the plane and ripped part of the plane off with it

Terrible. Seats are bad and the baggage policy is inconsistent

Better than I expected but I did pay for a seat and carry on bags ahead of time.

I hope to avoid flying with them in the future. First flight got cancelled then got stuck with a 13 hour layover in Denver. The process was long and frustrating to many people.

Flight was delayed on the runway for 40 minutes the crew did not even offer even water to passengers to compensate for the flight delayed. The flight was delayed due to aircraft mechanical issues. Worst customer service ever

First time flying with Frontier . From buying tickets ,getting boarding pass and boarding plane was super easy. Definitely would fly again with Frontier .

The flight was delayed and I had to cancel because I would have missed my connection and there were no other flights for the next two days. They also lost my bag!!

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.
5/4Sat
1 stopFrontier
7h 46mONT-BUF
$100
9/21Sat
1 stopFrontier
7h 16mONT-BUF
$109
10/1Tue
2 stopsAmerican Airlines
10h 26mONT-BUF
$113
5/31Fri
1 stopJetBlue
8h 02mONT-BUF
$124
10/21Mon
2 stopsUnited Airlines
12h 17mONT-BUF
$143
6/3Mon
1 stopDelta
9h 56mONT-BUF
$148
6/3Mon
2 stopsDelta
8h 45mONT-BUF
$153
5/28Tue
1 stopJetBlue
8h 02mONT-BUF
$199
6/5Wed
2 stopsAmerican Airlines
10h 57mONT-BUF
$203
8/13Tue
2 stopsUnited Airlines
12h 21mONT-BUF
$234

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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.
4/28Sun
multi-stopFrontier
14h 03mONT-BUF
5/6Mon
multi-stopFrontier
14h 24mBUF-ONT
$243
4/26Fri
multi-stopFrontier
14h 17mONT-BUF
4/29Mon
multi-stopFrontier
14h 24mBUF-ONT
$260
4/27Sat
multi-stopFrontier
7h 46mONT-BUF
4/29Mon
multi-stopFrontier
14h 24mBUF-ONT
$318
4/29Mon
multi-stopFrontier
7h 36mONT-BUF
5/6Mon
multi-stopFrontier
14h 24mBUF-ONT
$393
4/25Thu
multi-stopFrontier
23h 52mONT-BUF
4/29Mon
multi-stopFrontier
14h 24mBUF-ONT
$680
4/26Fri
multi-stopDelta
8h 24mONT-BUF
4/28Sun
multi-stopDelta
8h 22mBUF-ONT
$1,033
4/27Sat
multi-stopAlaska Airlines
13h 08mONT-BUF
4/29Mon
multi-stopAlaska Airlines
13h 30mBUF-ONT
$1,084
4/25Thu
multi-stopAlaska Airlines
13h 38mONT-BUF
5/2Thu
multi-stopAlaska Airlines
15h 28mBUF-ONT
$1,276
4/26Fri
multi-stopAmerican Airlines
8h 24mONT-BUF
5/3Fri
multi-stopAmerican Airlines
10h 18mBUF-ONT
$1,848
4/25Thu
multi-stopAmerican Airlines
7h 06mONT-BUF
5/2Thu
multi-stopAmerican Airlines
10h 18mBUF-ONT
$1,850

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Ontario - Buffalo Flights

Departure:

Ontario (ONT)United States

Destination:

Buffalo (BUF)United States

Return flight deals:

Buffalo - Ontario

Cabin classes: