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Ontario

$119+ 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 5/13. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — ONT
May 17 — May 241
Sun 5/17
Sun 5/24
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 April 17, 2026.

This United Airlines deal was found by Cheapflights users on 4/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/265:52 pm
BUF
-
ONT
1 stop7h 54m
United Airlines
Tue 6/21:18 pm
ONT
-
BUF
1 stop6h 40m
United Airlines
Deal found 4/12$383
This American Airlines deal was found by Cheapflights users on 4/12. 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 5/2612:51 pm
BUF
-
ONT
2 stops12h 06m
American Airlines
Tue 6/26:10 am
ONT
-
BUF
2 stops13h 26m
American Airlines
Deal found 4/12$395
This Southwest deal was found by Cheapflights users on 4/12. 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 5/263:10 pm
BUF
-
ONT
2 stops9h 35m
Southwest
Tue 6/29:55 pm
ONT
-
BUF
1 stop6h 55m
Southwest
Deal found 4/12$397
This Delta deal was found by Cheapflights users on 4/16. 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.
Tue 7/215:12 pm
BUF
-
ONT
1 stop7h 32m
Delta
Wed 7/2911:48 am
ONT
-
BUF
1 stop9h 11m
Delta
Deal found 4/16$417
This American Airlines deal was found by Cheapflights users on 4/14. 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.
Wed 7/297:00 am
BUF
-
ONT
1 stop7h 45m
American Airlines
Wed 8/512:33 pm
ONT
-
BUF
1 stop7h 28m
American Airlines
Deal found 4/14$418
This Delta deal was found by Cheapflights users on 4/16. 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.
Wed 5/274:55 pm
BUF
-
ONT
1 stop7h 53m
Delta
Mon 6/810:00 pm
ONT
-
BUF
1 stop10h 09m
Delta
Deal found 4/16$423

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 April 17, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$383
(United Airlines)

One-way from

$119
(Trip.com)

Popular in

December

Cheapest in

October

Average price

$615
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
Highest demand for flights based on searches. 8% potential increase in price ($41 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($21 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 April 17, 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

Tue 5/26

5:52 pm-10:46 pm

1 stop7h 54m

Ontario

Tue 6/2

1:18 pm-10:58 pm

1 stop6h 40m

$383

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Wed 7/29

7:00 am-11:45 am

1 stop7h 45m

Ontario

Wed 8/5

12:33 pm-11:01 pm

1 stop7h 28m

$421
Quickest round-trip

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Tue 5/5

5:50 pm-10:35 pm

1 stop7h 45m

Ontario

Wed 5/6

1:40 pm-11:05 pm

1 stop6h 25m

$477

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Sat 5/9

7:00 am-12:38 pm

2 stops8h 38m

Ontario

Tue 5/12

1:40 pm-11:05 pm

1 stop6h 25m

$482

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Thu 6/11

4:05 pm-10:10 pm

2 stops9h 05m

Ontario

Sun 6/14

11:55 pm-10:25 am

1 stop7h 30m

$499

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Wed 7/29

5:52 pm-10:51 pm

1 stop7h 59m

Ontario

Wed 8/12

1:18 pm-11:23 pm

1 stop7h 05m

$502

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Fri 5/22

5:52 pm-10:46 pm

1 stop7h 54m

Ontario

Tue 5/26

6:30 am-4:46 pm

1 stop7h 16m

$548

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Fri 7/17

5:52 pm-10:51 pm

1 stop7h 59m

Ontario

Wed 7/22

6:30 am-4:46 pm

1 stop7h 16m

$557

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Fri 5/22

5:52 pm-10:46 pm

1 stop7h 54m

Ontario

Fri 5/29

1:18 pm-10:58 pm

1 stop6h 40m

$557
Cheapest one-way

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Mon 6/1

5:15 am-11:20 am

1 stop9h 05m

$200

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/15

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3

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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust 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

What is the cheapest month to book a flight from Buffalo to Ontario?

Currently, October is the cheapest month in which you can book a flight from Buffalo to Ontario (average of $306). Flying from Buffalo to Ontario in December is currently the most expensive (average of $687). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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

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 April 17, 2026.
Get a feel of what it's like to fly with Southwest and American 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
4,328 reviews

Entertainment

7.5

Food

7.0

Crew

8.6

Overall

8.0

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,328 reviews
Southwest
8.0
Very good
4,328 reviews

Entertainment

7.5

Food

7.0

Crew

8.6

Overall

8.0

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
American Airlines
7.1
Good
11,593 reviews
Southwest
8.0
Very good
4,328 reviews

Entertainment

7.5

Food

7.0

Crew

8.6

Overall

8.0

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

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 7h 45m. United Airlines provides one of the quickest options available for as low as $421. 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 ($286), and Southwest ($306) offers the cheapest pricing from Buffalo to Ontario. You may be able to fly from Buffalo to Ontario for 37% 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 United Airlines, with whom users have recently found tickets for as low as $124. However, be on the lookout for offers from Delta 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.

  • What is the cheapest month to book a flight from Buffalo to Ontario?

    Currently, October is the cheapest month in which you can book a flight from Buffalo to Ontario (average of $306). Flying from Buffalo to Ontario in December is currently the most expensive (average of $687). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Buffalo to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Buffalo to Ontario

Discover the top 2 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 April 17, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$286Average$366FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$306Average$465FlexibilityNo cancel feeOn-time63%

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