BUF - ONT

$129 Find Cheap Flights from Buffalo to Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Buffalo to Ontario departing on 8/13. 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
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Ontario

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Buffalo to Ontario, 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 Buffalo to Ontario, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flights Deals
Booking Insights
Flights Deals

Cheap Flights from Buffalo to Ontario (BUF-ONT)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Buffalo to Ontario 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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Buffalo to Ontario

Mon, Aug 11 - Tue, Aug 12
Frontier Logo
2:11 pm - 11:50 pmBUF-ONT
12h 39m1 stop
Frontier Logo
12:59 am - 4:17 pmONT-BUF
12h 18m1 stop
$268Frontier
Find Deal
Wed, Aug 13 - Sun, Aug 17
Frontier Logo
5:12 pm - 11:50 pmBUF-ONT
9h 38m1 stop
Frontier Logo
12:59 am - 1:16 pmONT-BUF
9h 17m1 stop
$275Frontier
Find Deal
Wed, Aug 13 - Sun, Aug 17
Frontier Logo
5:12 pm - 11:50 pmBUF-ONT
9h 38m1 stop
Frontier Logo
5:21 pm - 1:16 pmONT-BUF
16h 55m1 stop
$277Frontier
Find Deal
Fri, Aug 22 - Sun, Aug 24
Frontier Logo
4:55 pm - 11:50 pmBUF-ONT
9h 55m1 stop
Frontier Logo
12:59 am - 4:00 pmONT-BUF
12h 01m1 stop
$278Frontier
Find Deal
Wed, Aug 20 - Tue, Aug 26
American Airlines Logo
5:31 pm - 10:48 pmBUF-ONT
8h 17m1 stop
American Airlines Logo
11:29 pm - 12:04 pmONT-BUF
9h 35m1 stop
$287American Airlines
Find Deal
Wed, Aug 20 - Tue, Aug 26
American Airlines Logo
2:44 pm - 9:10 pmBUF-ONT
9h 26m1 stop
American Airlines Logo
10:50 am - 11:31 pmONT-BUF
9h 41m2 stops
$292American Airlines
Find Deal
Wed, Aug 20 - Tue, Aug 26
Delta Logo
4:43 pm - 10:20 pmBUF-ONT
8h 37m1 stop
Delta Logo
11:45 am - 11:57 pmONT-BUF
9h 12m1 stop
$297Delta
Find Deal
Wed, Aug 20 - Tue, Aug 26
Delta Logo
6:00 am - 10:35 amBUF-ONT
7h 35m1 stop
Delta Logo
7:05 am - 11:24 pmONT-BUF
13h 19m2 stops
$302Delta
Find Deal
Wed, Aug 27 - Wed, Sep 3
United Airlines Logo
8:33 am - 12:32 pmBUF-ONT
6h 59m1 stop
United Airlines Logo
1:15 pm - 10:56 pmONT-BUF
6h 41m1 stop
$387United Airlines
Find Deal
Wed, Aug 27 - Wed, Sep 3
United Airlines Logo
5:54 pm - 10:30 pmBUF-ONT
7h 36m1 stop
United Airlines Logo
5:10 am - 9:16 pmONT-BUF
13h 06m2 stops
$392United Airlines
Find Deal
Booking Insights

KAYAK's insights & trends for Buffalo to Ontario flights

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

The average price of all round-trip flights from Buffalo to Ontario clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Ontario on a Saturday, as we generally find the cheapest rates on that day for this route. On the other hand, Sunday is the most expensive day to fly from Buffalo to Ontario. For your return ticket, we recommend flying on a Monday and avoiding Sundays for the best deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Buffalo to Ontario, 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 Buffalo to Ontario is September, where tickets cost $301 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $706 and $571 respectively.

Good to know

Low seasonJuly
Cheapest flight$129
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly and prices are also 18% lower on average.
Flight from Buffalo to Ontario

When to book flights from Buffalo to Ontario

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

  • What is the cheapest flight from Buffalo to Ontario?

    In the last 3 days, the lowest price for a flight from Buffalo to Ontario was $129 for a one-way ticket and $268 for a round-trip.

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

    A passport is not required to fly from Buffalo to Ontario.

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

    When flying out of Buffalo you will be using Buffalo. You will be landing at Ontario, also known as Ontario.

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

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

  • Which airline alliances offer flights from Buffalo to Ontario?

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

  • Which is the best airline for flights from Buffalo to Ontario, Southwest or American Airlines?

    The two airlines most popular with KAYAK users for flights from Buffalo to Ontario are Southwest and American Airlines. With an average price for the route of $489 and an overall rating of 8.0, Southwest is the most popular choice. American Airlines is also a great choice for the route, with an average price of $355 and an overall rating of 7.2.

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

    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 Buffalo to Ontario.

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

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

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

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

Reviews of the top airlines flying from Buffalo to Ontario

 
See real verified KAYAK customer reviews for airlines flying from Buffalo to Ontario. 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 Buffalo to Ontario? 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
SouthwestOverall score based on 4241 reviews
8.0Comfort
8.1Boarding
7.0Food
8.6Crew
7.5Entertainment
Airline reviews

Very smooth checking in our luggage with a super pleasant SW agent. I enjoyed a fun entertaining movie.

10.0 ExcellentGordon, Jul 2025GEG - OAK
Read more Southwest reviews

Very smooth checking in our luggage with a super pleasant SW agent. I enjoyed a fun entertaining movie.

First time traveling on Southwest since bag fees were implemented. Usual good service. Just more expensive now.

It was a perfect flight in all aspects! Both legs!

Boarding process, crew were good. But the seats were so uncomfortable that was all I could focus on. I literally had to sit forward so that all 3 of us could fit in row. I will try to avoid Southwest in the future for any flights over 60 minutes.

Great flight, 47 passengers on a 180 seat plane. Stewardess was pleasant and cheerful.

Great experience flying Southwest. The crew was really kind and helpful, and very friendly with our toddler.

Plane late from DC to Austin 30 minutes. Crew made up much of the time enroute to San Diego.

Fine, but how to board on SW versus othrr airlines, is just lame. Goood staff though and all was solid otherwise.

It went well. Plane wasn't full. Will be great when assigned seating is in place

Was as expected. Crowed planes. Too many carryons delaying takeoff. But the ride only took an hour and saved me a lot of time SFO is a not a great airport.

Amazing food, great staff, with one noticable detail missing ...but no seat entertainment in any of aircraft ...I am not a fan

Boarding gate in Honolulu was staffed with a great clerk with a soothing voice despite the flight delay of over an hour. Flight attendants in the plane were all grumpy, not pleasant looking bunch. Their sour attitude showed throughout the flight. Inly able to get a select few movies started. Most of the movie links in the “free entertainment” did not work.

This was a horrible experience. For a first class experience, my chair was held together by 3M tape - and I have a photo. The crew weren’t very attentive, somewhat dismissive and forgot my drink and snack, the chair reclined about 3 inches on a 6-hour cross country flight. I was also not informed that there was no lounge available in Newark airport because of renovations, so all around this was one of the worst experiences and I would actively avoid both American and Alaska Air going forward.

Boarding was very efficient. Everyone got on board and we got on our way very quickly. It was frustrating that the entertainment app was not functioning properly. I was not able to activate some of the movies offered. The crew on this flight appears to be pretty grumpy. They had no smile on their faces. I felt like they were doing us a favor for being there.

Loved the staff, boarding and drink options! Wish the comfort of the seat could have been better nevertheless

Honestly, I haven’t flown American in years, probably due to the pandemic and my being unable to travel for certain periods in the last two years, but it was a good experience to dig out or obtain a new American Airlines account after many years of traveling for business with American in the past.

Long 5 hour and 45 min flight and only one drink service and cookie snack

One bottle of water and a package of cookies for comfort plus. We had to literally beg a flight attendant for an extra bottle of water later in the flight due to feeling dehydrated.

Flight boarded from Gate 39 at OGG, the farthest gate in the terminal. There were no Hawaiian themed amenities for the flight. The first class service was mediocre at best; I received not special welcome or recognition as an executive platinum member of American Advantage program. The flight attendants were more concerned with their cell phones than saying "thank you" to the passengers as we disembarked. Fortunately, the flight arrived at LAX a few minutes early.

Bigger seats. Board back to front! Disembark front to back!

Everything you need to know for your flight from Buffalo to Ontario

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.