Ontario

$140+ 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 10/31. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — ONT
Nov 15 — Nov 221
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Find 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 October 16, 2025.

This Delta deal was found by Cheapflights users on 10/16. 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 11/126:25 pmBUF - ONT
1 stop7h 39mDelta
Sat 11/1512:16 pmONT - BUF
1 stop8h 34mDelta
Deal found 10/16$307
This Delta deal was found by Cheapflights users on 10/15. 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 11/52:35 pmBUF - ONT
2 stops10h 47mDelta
Tue 11/1110:25 pmONT - BUF
1 stop9h 35mDelta
Deal found 10/15$312
This Delta deal was found by Cheapflights users on 10/15. 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 11/52:35 pmBUF - ONT
2 stops10h 47mDelta
Wed 11/127:05 amONT - BUF
2 stops12h 56mDelta
Deal found 10/15$317
This Delta deal was found by Cheapflights users on 10/15. 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.
Mon 11/106:25 pmBUF - ONT
1 stop7h 39mDelta
Tue 11/1110:25 pmONT - BUF
1 stop9h 35mDelta
Deal found 10/15$329
This Delta deal was found by Cheapflights users on 10/15. 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 11/512:06 pmBUF - ONT
1 stop10h 13mDelta
Sat 11/1512:16 pmONT - BUF
1 stop8h 34mDelta
Deal found 10/15$363
This American Airlines deal was found by Cheapflights users on 10/15. 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 12/210:07 amBUF - ONT
2 stops8h 54mAmerican Airlines
Sat 12/612:46 pmONT - BUF
1 stop6h 34mAmerican Airlines
Deal found 10/15$367
This Delta deal was found by Cheapflights users on 10/16. 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.
Thu 11/136:25 pmBUF - ONT
1 stop7h 39mDelta
Sat 11/1512:16 pmONT - BUF
2 stops22h 54mDelta
Deal found 10/16$392
This Delta deal was found by Cheapflights users on 10/16. 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 11/126:25 pmBUF - ONT
1 stop7h 39mDelta
Sun 11/167:05 amONT - BUF
1 stop7h 14mDelta
Deal found 10/16$393
This American Airlines deal was found by Cheapflights users on 10/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/611:54 amBUF - ONT
2 stops9h 25mAmerican Airlines
Wed 12/2411:59 pmONT - BUF
1 stop8h 10mAmerican Airlines
Deal found 10/16$398
This Delta deal was found by Cheapflights users on 10/15. 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.
Sun 11/96:10 amBUF - ONT
1 stop7h 56mDelta
Tue 11/1110:25 pmONT - BUF
1 stop9h 35mDelta
Deal found 10/15$402

Cheap 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 October 16, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$306
(Delta)

One-way from

$140
(American Airlines)

Popular in

December

Cheapest in

October

Average price

$306
Provider with most accurate pricing for Buffalo-Ontario flight deals.
Provider most trusted by Cheapflights users for Buffalo-Ontario flights.
From Buffalo to Ontario
One-way flight from Buffalo to Ontario
Highest demand for flights based on searches. 14% potential increase in price ($82 potential increase over avg. RT price).
Cheapest flight prices on average. 5% potential price decrease ($25 potential savings vs. average RT price).
Average for round-trip flights in October 2025

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 October 16, 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

Wed 11/5

2:35 pm-10:22 pm

2 stops10h 47m

Ontario

Tue 11/11

10:25 pm-11:00 am

1 stop9h 35m

$312

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Wed 11/5

2:35 pm-10:22 pm

2 stops10h 47m

Ontario

Wed 11/12

7:05 am-5:19 pm

1 stop7h 14m

$312

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Thu 12/11

6:00 am-11:02 am

1 stop8h 02m

Ontario

Tue 12/16

10:25 pm-11:05 am

1 stop9h 40m

$329

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Mon 11/10

6:25 pm-11:04 pm

1 stop7h 39m

Ontario

Tue 11/11

10:25 pm-2:10 pm

2 stops12h 45m

$334

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Wed 11/5

12:06 pm-7:19 pm

1 stop10h 13m

Ontario

Sat 11/15

12:16 pm-11:50 pm

1 stop8h 34m

$363

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Sun 11/9

6:10 am-11:06 am

1 stop7h 56m

Ontario

Wed 11/12

7:05 am-5:19 pm

1 stop7h 14m

$402

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Sun 11/9

6:10 am-11:06 am

1 stop7h 56m

Ontario

Sat 11/15

12:16 pm-11:50 pm

1 stop8h 34m

$402

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Wed 11/5

5:40 pm-10:31 pm

1 stop7h 51m

Ontario

Wed 11/19

1:33 pm-10:52 pm

1 stop6h 19m

$407

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Tue 11/11

8:30 am-12:31 pm

1 stop7h 01m

Ontario

Tue 11/18

6:38 pm-10:03 am

2 stops12h 25m

$412

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Fri 10/31

12:15 pm-8:44 pm

2 stops11h 29m

Ontario

Tue 11/4

7:00 am-4:48 pm

1 stop6h 48m

$413

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/15

Showing 1-10 of 20 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 October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
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 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, May is the cheapest month in which you can book a flight from Buffalo to Ontario (average of $136). Flying from Buffalo to Ontario in February is currently the most expensive (average of $249). 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 October 16, 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 October 16, 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.

Boarding

8.1

Food

7.0

Overall

8.0

Comfort

8.0

Crew

8.6

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.

Boarding

8.1

Food

7.0

Overall

8.0

Comfort

8.0

Crew

8.6

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.

Boarding

8.1

Food

7.0

Overall

8.0

Comfort

8.0

Crew

8.6

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 8h 54m. Delta provides one of the quickest options available for as low as $372. 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 ($367) offers the cheapest pricing from Buffalo to Ontario. You may be able to fly from Buffalo to Ontario for 39% less than the average price by searching for these airlines.

  • 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 $136). Flying from Buffalo to Ontario in February is currently the most expensive (average of $249). 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.

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 October 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$286Average$366FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$367Average$487FlexibilityNo cancel feeOn-time63%

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