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Ontario

$166+ Cheap flights from Buffalo to Ontario (BUF - ONT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — ONT
Aug 28 — Sep 41
Fri 8/28
Fri 9/4
1 adult, Economy
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Cheap flight deals from Buffalo to Ontario

Cheapest flights from Buffalo to Ontario
Explore the most affordable flight options available from Buffalo to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2026.

This American Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/257:00 am
BUF
-
ONT
1 stop9h 31m
American Airlines
Tue 9/110:29 am
ONT
-
BUF
1 stop9h 32m
American Airlines
Deal found 7/27$355
This American Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/11:03 pm
BUF
-
ONT
2 stops12h 56m
American Airlines
Tue 9/86:00 am
ONT
-
BUF
2 stops12h 31m
American Airlines
Deal found 7/27$366
This American Airlines deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/204:50 pm
BUF
-
ONT
1 stop9h 09m
American Airlines
Mon 8/2412:33 pm
ONT
-
BUF
1 stop7h 28m
American Airlines
Deal found 7/26$368
This CheapTicketsDeal deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapTicketsDeal is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/254:02 pm
BUF
-
ONT
1 stop9h 05m
JetBlue
Tue 9/112:02 am
ONT
-
BUF
1 stop8h 25m
JetBlue
Deal found 7/27$377
This Southwest deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/256:00 am
BUF
-
ONT
2 stops9h 40m
Southwest
Tue 9/111:55 pm
ONT
-
BUF
2 stops9h 35m
Southwest
Deal found 7/27$384
This Delta deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/56:00 am
BUF
-
ONT
1 stop8h 06m
Delta
Mon 11/1612:22 pm
ONT
-
BUF
1 stop8h 37m
Delta
Deal found 7/28$387
This Priceline deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/273:55 pm
BUF
-
ONT
1 stop9h 43m
JetBlue
Sun 9/611:59 pm
ONT
-
BUF
1 stop11h 39m
JetBlue
Deal found 7/26$403
This Southwest deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2011:45 am
BUF
-
ONT
1 stop7h 25m
Southwest
Wed 8/267:45 am
ONT
-
BUF
2 stops9h 50m
Southwest
Deal found 7/28$424
This Delta deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/256:00 am
BUF
-
ONT
1 stop8h 27m
Delta
Sat 1/912:00 pm
ONT
-
BUF
1 stop8h 55m
Delta
Deal found 7/26$447

Find flight deals from Buffalo to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Buffalo (BUF) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$355
(American Airlines)

One-way from

$166
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$583
Provider with most accurate pricing for Buffalo-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Buffalo-Ontario flights.
Search Deals
From Buffalo to Ontario
Search Deals
One-way flight from Buffalo to Ontario
Search Deals
High demand for flights, 2% potential price rise
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Buffalo to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 29, 2026.
Use the filters below to find and compare flights from Buffalo to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Fri 9/4

3:32 pm-10:38 pm

1 stop10h 06m

Ontario

Sun 9/6

11:59 pm-2:38 pm

1 stop11h 39m

$403

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Sat 9/5

6:55 am-3:41 pm

2 stops11h 46m

Ontario

Thu 9/10

1:18 pm-10:37 pm

1 stop6h 19m

$470

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Tue 8/25

6:55 am-6:11 pm

2 stops14h 16m

Ontario

Tue 9/1

7:00 am-4:56 pm

1 stop6h 56m

$470

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Sat 8/29

5:58 pm-10:35 pm

1 stop7h 37m

Ontario

Tue 9/1

5:00 am-9:07 pm

2 stops13h 07m

$470

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Thu 9/3

5:58 pm-10:35 pm

1 stop7h 37m

Ontario

Sun 9/6

5:00 am-4:56 pm

2 stops8h 56m

$502

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Thu 8/27

6:55 am-6:11 pm

2 stops14h 16m

Ontario

Sun 9/6

5:00 am-9:11 pm

2 stops13h 11m

$503
Quickest round-trip

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Thu 9/3

5:58 pm-10:35 pm

1 stop7h 37m

Ontario

Mon 9/7

1:18 pm-10:37 pm

1 stop6h 19m

$520

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Fri 8/14

6:50 am-10:20 am

1 stop6h 30m

Ontario

Sat 8/22

11:55 pm-10:50 am

1 stop7h 55m

$523

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Tue 8/18

5:58 pm-10:35 pm

1 stop7h 37m

Ontario

Sat 8/22

5:00 am-4:52 pm

2 stops8h 52m

$525

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Tue 9/22

10:33 am-8:53 pm

2 stops13h 20m

Ontario

Sat 9/26

8:03 am-4:43 pm

2 stops29h 40m

$525

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 22 resultsSorted by cheapest first
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Compare providers for flights from Buffalo to Ontario

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Buffalo to Ontario in July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapTicketsDealPrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Buffalo-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Buffalo-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Buffalo-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Buffalo-Ontario flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Buffalo-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Buffalo to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Buffalo with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

How much does it cost to fly round-trip from Buffalo to Ontario?

Airfare is below average for this route at the moment.

Buffalo to Ontario flights typically cost between $374 and $614 in August.
The cheapest round-trip price found within the last 5 days was $355 on American Airlines (Aug 25-Sep 1).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated July 29, 2026.
Get a feel of what it's like to fly with Southwest,United Airlines, andAmerican Airlines from Buffalo to Ontario by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,227 reviews

Entertainment

7.5

Food

7.0

Boarding

8.1

Overall

8.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Walter,May 2026

LAS - BUR

Short but excellent flight. Everyone was friendly and professional it was a great flight!
Southwest
8.0
Very good
4,227 reviews
Southwest
8.0
Very good
4,227 reviews

Entertainment

7.5

Food

7.0

Boarding

8.1

Overall

8.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Walter,May 2026

LAS - BUR

Short but excellent flight. Everyone was friendly and professional it was a great flight!
United Airlines
7.4
Good
10,052 reviews
Southwest
8.0
Very good
4,227 reviews

Entertainment

7.5

Food

7.0

Boarding

8.1

Overall

8.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Walter,May 2026

LAS - BUR

Short but excellent flight. Everyone was friendly and professional it was a great flight!
American Airlines
7.1
Good
11,839 reviews
Southwest
8.0
Very good
4,227 reviews

Entertainment

7.5

Food

7.0

Boarding

8.1

Overall

8.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Walter,May 2026

LAS - BUR

Short but excellent flight. Everyone was friendly and professional it was a great flight!

Related info for your journey

Find useful and relevant information for your journey from Buffalo to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Buffalo to Ontario?

    A quick flight from Buffalo to Ontario can take about 10h 06m. JetBlue provides one of the quickest options available for as low as $403. The distance between Buffalo and Ontario is about 2167 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Buffalo to Ontario round-trip?

    According to our current data, American Airlines ($296), Southwest ($306), and United Airlines ($374) offers the cheapest pricing from Buffalo to Ontario. You may be able to fly from Buffalo to Ontario for 42% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Buffalo to Ontario one-way?

    The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as $138. However, be on the lookout for offers from United Airlines and Southwest, as they are both options that can get you from Buffalo to Ontario for a low price.

  • Can I find deals for flights from Buffalo to Ontario that include hotel bookings?

    Yes. In addition to deals on Buffalo to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Buffalo to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Buffalo to Ontario.

  • Can I find deals for business class flights from Buffalo to Ontario?

    Yes. Cheapflights offers flight deals from Buffalo to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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Alternative routes for Buffalo to Ontario

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Top 3 airlines flying from Buffalo to Ontario

Discover the top 3 airlines that operate flights from Buffalo to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$296Average$366FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$306Average$511FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$374Average$614FlexibilityNo cancel feeOn-time69%

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