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$81+ 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 10/24. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — ONT
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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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 August 14, 2025.

Round-trip from

$179
(FlightHub)

One-way from

$81
(Frontier)

Popular in

December

Cheapest in

September

Average price

$366
From Buffalo to Ontario
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One-way flight from Buffalo to Ontario
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Highest demand for flights based on searches. 13% potential increase in price ($74 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($21 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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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 August 14, 2025.

This Orbitz deal was found by Cheapflights users on 8/14. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/224:55 pmBUF - ONT
1 stop9h 55mFrontier
Sun 8/2412:59 amONT - BUF
1 stop12h 01mFrontier
Deal found 8/14$222
This Frontier deal was found by Cheapflights users on 8/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/412:17 pmBUF - ONT
2 stops14h 21mFrontier
Sun 9/710:28 pmONT - BUF
2 stops14h 34mFrontier
Deal found 8/14$235
This American Airlines deal was found by Cheapflights users on 8/12. 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.
Fri 9/197:00 amBUF - ONT
1 stop7h 55mAmerican Airlines
Tue 9/2312:47 pmONT - BUF
1 stop7h 21mAmerican Airlines
Deal found 8/12$269
This Frontier deal was found by Cheapflights users on 8/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2512:17 pmBUF - ONT
2 stops14h 21mFrontier
Sun 9/2810:28 pmONT - BUF
2 stops14h 35mFrontier
Deal found 8/14$287
This American Airlines deal was found by Cheapflights users on 8/12. 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.
Thu 9/187:00 amBUF - ONT
1 stop7h 55mAmerican Airlines
Sun 9/2110:55 amONT - BUF
1 stop9h 12mAmerican Airlines
Deal found 8/12$289
This Delta deal was found by Cheapflights users on 8/13. 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 9/36:00 amBUF - ONT
1 stop7h 35mDelta
Tue 9/911:45 amONT - BUF
1 stop9h 12mDelta
Deal found 8/13$297
This Southwest deal was found by Cheapflights users on 8/12. 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.
Thu 9/184:10 pmBUF - ONT
1 stop9h 35mSouthwest
Sun 9/217:15 amONT - BUF
1 stop6h 25mSouthwest
Deal found 8/12$301
This Delta deal was found by Cheapflights users on 8/13. 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 9/36:00 amBUF - ONT
1 stop7h 35mDelta
Sat 9/137:05 amONT - BUF
2 stops14h 16mDelta
Deal found 8/13$302

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 August 14, 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 9/4

12:17 pm-11:38 pm

2 stops14h 21m

Ontario

Sun 9/7

10:28 pm-4:02 pm

2 stops14h 34m

$235

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Thu 10/2

12:17 pm-11:38 pm

2 stops14h 21m

Ontario

Sun 10/5

10:28 pm-4:03 pm

2 stops14h 35m

$235

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Fri 9/19

7:00 am-11:55 am

1 stop7h 55m

Ontario

Tue 9/23

12:47 pm-11:08 pm

1 stop7h 21m

$269

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Thu 9/25

12:17 pm-11:38 pm

2 stops14h 21m

Ontario

Sun 9/28

10:28 pm-4:03 pm

2 stops14h 35m

$287

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Thu 9/18

7:00 am-11:55 am

1 stop7h 55m

Ontario

Sun 9/21

10:55 am-11:07 pm

1 stop9h 12m

$289

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Sat 9/6

6:00 am-10:35 am

1 stop7h 35m

Ontario

Mon 9/15

10:00 pm-11:01 am

1 stop10h 01m

$297

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Thu 10/2

4:43 pm-10:23 pm

1 stop8h 40m

Ontario

Tue 10/7

10:00 pm-11:01 am

1 stop10h 01m

$297

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Fri 9/5

12:02 pm-7:11 pm

1 stop10h 09m

Ontario

Wed 9/10

11:45 am-11:57 pm

1 stop9h 12m

$297

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Thu 9/4

6:00 am-10:35 am

1 stop7h 35m

Ontario

Thu 9/11

7:05 am-6:03 pm

1 stop7h 58m

$297

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Fri 10/24

5:24 pm-11:50 pm

1 stop9h 26m

$81

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/14

Showing 1-10 of 20 results
1
2

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, August is the cheapest month in which you can book a flight from Buffalo to Ontario (average of $246). Flying from Buffalo to Ontario in March is currently the most expensive (average of $328). 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 August 14, 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 71% 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 August 14, 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
4,244 reviews

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

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
4,244 reviews
Southwest
8.0
Very good
4,244 reviews

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

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
10,000 reviews
Southwest
8.0
Very good
4,244 reviews

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

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.

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

    According to our current data, American Airlines ($286), and Southwest ($370) 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, August is the cheapest month in which you can book a flight from Buffalo to Ontario (average of $246). Flying from Buffalo to Ontario in March is currently the most expensive (average of $328). 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

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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 August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$286Average$411FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$370Average$489FlexibilityNo cancel feeOn-time63%

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