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$138+ 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 2/12. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — ONT
Jan 26 — Feb 21
Mon 1/26
Mon 2/2
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 December 27, 2025.

This United Airlines deal was found by Cheapflights users on 12/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/315:35 pmBUF - ONT
1 stop7h 50mUnited Airlines
Tue 1/65:05 amONT - BUF
2 stops12h 24mUnited Airlines
Deal found 12/26$964
This Delta deal was found by Cheapflights users on 12/25. 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 12/312:06 pmBUF - ONT
1 stop8h 44mDelta
Mon 1/510:30 pmONT - BUF
2 stops15h 25mDelta
Deal found 12/25$967
This Delta deal was found by Cheapflights users on 12/25. 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 12/306:10 amBUF - ONT
2 stops9h 19mDelta
Mon 1/510:30 pmONT - BUF
2 stops15h 25mDelta
Deal found 12/25$972
This American Airlines deal was found by Cheapflights users on 12/25. 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.
Fri 12/265:20 pmBUF - ONT
1 stop7h 54mAmerican Airlines
Sun 1/46:10 amONT - BUF
1 stop7h 19mAmerican Airlines
Deal found 12/25$979
This United Airlines deal was found by Cheapflights users on 12/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/315:35 pmBUF - ONT
1 stop7h 50mUnited Airlines
Mon 1/511:59 pmONT - BUF
2 stops11h 15mUnited Airlines
Deal found 12/26$982
This Delta deal was found by Cheapflights users on 12/25. 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 12/306:10 amBUF - ONT
2 stops9h 19mDelta
Tue 1/610:30 pmONT - BUF
2 stops15h 25mDelta
Deal found 12/25$1,042
This Southwest deal was found by Cheapflights users on 12/26. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/312:05 pmBUF - ONT
1 stop7h 10mSouthwest
Thu 1/112:45 pmONT - BUF
1 stop6h 55mSouthwest
Deal found 12/26$1,057
This United Airlines deal was found by Cheapflights users on 12/25. 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.
Sat 12/275:35 pmBUF - ONT
1 stop7h 50mUnited Airlines
Sun 1/45:05 amONT - BUF
2 stops12h 49mUnited Airlines
Deal found 12/25$1,062
This Delta deal was found by Cheapflights users on 12/26. 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.
Wed 12/316:10 amBUF - ONT
2 stops9h 19mDelta
Thu 1/16:38 amONT - BUF
2 stops12h 55mDelta
Deal found 12/26$1,067

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 December 27, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$351
(Priceline)

One-way from

$138
(Trip.com)

Popular in

December

Cheapest in

October

Average price

$846
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. 15% potential increase in price ($86 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($35 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 December 27, 2025.
Use the filters below to find and compare flights from Buffalo to Ontario that are best for you.

Fly from

Buffalo

Fly to

Ontario

Route

Depart

Return

Price

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Thu 1/22

6:00 am-11:31 am

1 stop8h 31m

Ontario

Mon 2/23

10:20 pm-11:00 am

1 stop9h 40m

$385

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Thu 2/5

5:50 am-10:40 am

1 stop7h 50m

Ontario

Mon 2/9

5:40 am-3:25 pm

1 stop6h 45m

$385

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Thu 1/22

1:59 pm-10:53 pm

2 stops11h 54m

Ontario

Mon 2/23

1:45 pm-10:59 pm

1 stop6h 14m

$390

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Thu 1/22

5:12 am-2:18 pm

2 stops12h 06m

Ontario

Mon 2/23

11:59 pm-12:50 pm

2 stops9h 51m

$395

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Tue 2/3

1:59 pm-10:53 pm

2 stops11h 54m

Ontario

Wed 2/11

1:24 pm-11:02 pm

1 stop6h 38m

$412

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Tue 2/3

10:45 am-10:53 pm

2 stops15h 08m

Ontario

Tue 2/10

5:05 am-8:29 pm

2 stops12h 24m

$417

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Mon 1/12

7:30 am-4:05 pm

2 stops11h 35m

Ontario

Sat 1/17

6:27 am-11:53 pm

2 stops14h 26m

$419

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Thu 1/22

8:30 am-5:43 pm

2 stops12h 13m

Ontario

Sat 1/24

5:05 am-8:29 pm

2 stops12h 24m

$456

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Mon 1/12

6:00 am-11:31 am

1 stop8h 31m

Ontario

Sat 1/17

12:41 pm-11:56 pm

1 stop8h 15m

$458

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Tue 2/10

6:00 am-4:15 pm

2 stops13h 15m

$159

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/27

Showing 1-10 of 19 results
1
2

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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Buffalo-Ontario flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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, May is the cheapest month in which you can book a flight from Buffalo to Ontario (average of $134). Flying from Buffalo to Ontario in June is currently the most expensive (average of $227). 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.

What is the cheapest time of day to fly from BUF to ONT?

Find hourly flight availability from Buffalo to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 27, 2025.

One of the essential ways to save on airfare from Buffalo to Ontario is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 70% on airfare.

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 December 27, 2025.
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
4,257 reviews

Food

7.0

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,257 reviews
Southwest
8.0
Very good
4,257 reviews

Food

7.0

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
11,067 reviews
Southwest
8.0
Very good
4,257 reviews

Food

7.0

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

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 50m. Delta provides one of the quickest options available for as low as $385. 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 38% 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, May is the cheapest month in which you can book a flight from Buffalo to Ontario (average of $134). Flying from Buffalo to Ontario in June is currently the most expensive (average of $227). 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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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 December 27, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$286Average$366FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$306Average$452FlexibilityNo cancel feeOn-time63%

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