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$82+ Cheap flights from Ontario to Buffalo (ONT - BUF)

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 7/27. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BUF
Jul 5 — Jul 121
Sat 7/5
Sat 7/12
1 adult, Economy
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Cheapflights Tip: The best prices from Ontario to Buffalo are usually found in May or September, booked 29 days in advance, depart on a Monday or Wednesday and return on a Saturday

Cheap flight deals from Ontario to Buffalo

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Buffalo (BUF). 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 June 30, 2025.

Round-trip from

$269
(Priceline)

One-way from

$82
(Priceline)

Popular in

November

Cheapest in

May

Average price

$531
From Ontario to Buffalo
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One-way flight from Ontario to Buffalo
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Highest demand for flights based on searches. 13% potential increase in price ($72 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Ontario to Buffalo

Cheapest flights from Ontario to Buffalo
Explore the most affordable flight options available from Ontario to Buffalo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 30, 2025.

This Priceline deal was found by Cheapflights users on 6/29. 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 8/1412:59 amONT - BUF
1 stop9h 17mFrontier
Fri 8/224:55 pmBUF - ONT
1 stop9h 55mFrontier
Deal found 6/29$269
This American Airlines deal was found by Cheapflights users on 6/29. 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 8/910:29 pmONT - BUF
1 stop9h 35mAmerican Airlines
Tue 8/127:08 amBUF - ONT
1 stop9h 31mAmerican Airlines
Deal found 6/29$287
This JetBlue deal was found by Cheapflights users on 6/29. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/2511:59 pmONT - BUF
1 stop8h 43mJetBlue
Mon 7/2812:43 pmBUF - ONT
1 stop12h 16mJetBlue
Deal found 6/29$291
This Delta deal was found by Cheapflights users on 6/29. 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 8/810:05 pmONT - BUF
2 stops20h 04mDelta
Tue 8/124:43 pmBUF - ONT
1 stop8h 37mDelta
Deal found 6/29$386
This United Airlines deal was found by Cheapflights users on 6/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/127:00 amONT - BUF
1 stop6h 55mUnited Airlines
Tue 8/198:33 amBUF - ONT
1 stop6h 59mUnited Airlines
Deal found 6/28$387
This Southwest deal was found by Cheapflights users on 6/29. 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.
Fri 8/151:25 pmONT - BUF
1 stop6h 10mSouthwest
Fri 8/224:10 pmBUF - ONT
1 stop7h 55mSouthwest
Deal found 6/29$389

Cheapflights Fare Finder

Customize your flight search to find flights from Ontario to Buffalo 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 June 30, 2025.
Use the filters below to find and compare flights from Ontario to Buffalo that are best for you.

Fly from

Ontario

Fly to

Buffalo

Route

Depart

Return

Price

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Thu 8/14

12:59 am-1:16 pm

1 stop9h 17m

Buffalo

Fri 8/22

4:55 pm-11:50 pm

1 stop9h 55m

$269

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Sat 8/9

10:29 pm-11:04 am

1 stop9h 35m

Buffalo

Tue 8/12

7:08 am-1:39 pm

1 stop9h 31m

$287

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Fri 7/25

11:59 pm-11:42 am

1 stop8h 43m

Buffalo

Mon 7/28

12:43 pm-9:59 pm

1 stop12h 16m

$291

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Fri 8/8

10:05 pm-9:09 pm

2 stops20h 04m

Buffalo

Tue 8/12

4:43 pm-10:20 pm

1 stop8h 37m

$386

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Tue 8/12

7:00 am-4:55 pm

1 stop6h 55m

Buffalo

Tue 8/19

8:33 am-12:32 pm

1 stop6h 59m

$387

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Fri 8/15

1:25 pm-10:35 pm

1 stop6h 10m

Buffalo

Fri 8/22

4:10 pm-9:05 pm

1 stop7h 55m

$389

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Sun 7/27

12:59 am-1:16 pm

1 stop9h 17m

$82

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Wed 8/20

12:46 pm-10:34 pm

1 stop6h 48m

$144

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Wed 8/20

11:45 am-11:57 pm

1 stop9h 12m

$149

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Fri 8/1

11:59 pm-11:42 am

1 stop8h 43m

$156

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/28

Showing 1-10 of 12 results
1
2

Best time to book a flight from Ontario to Buffalo

Have a flexible travel schedule? Discover the best time to fly to Buffalo from Ontario 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 Ontario to Buffalo

How far ahead should I book a flight from Ontario to Buffalo?

Use this chart to determine the optimal time to book a round-trip flight from Ontario to Buffalo. Price data was last updated on June 27, 2025.

The best time to book flights from Ontario to Buffalo is 29 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, January is the cheapest month in which you can book a flight from Ontario to Buffalo (average of $256). Flying from Ontario to Buffalo in December is currently the most expensive (average of $337). 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 ONT to BUF?

Find hourly flight availability from Ontario to Buffalo. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 30, 2025.

One of the essential ways to save on airfare from Ontario to Buffalo is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight at noon could potentially save you up to 44% on airfare.

Reviews of airlines servicing Buffalo

Get insights into the airlines that provide service to Buffalo. 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 Buffalo. Reviews last updated June 30, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest, and Delta from Ontario to Buffalo. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,278 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,973 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,852 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
JetBlue
7.3
Good
2,920 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Buffalo. 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 Ontario to Buffalo round-trip?

    According to our current data, Frontier ($269), American Airlines ($287), and JetBlue ($291) offers the cheapest pricing from Ontario to Buffalo. Frontier is 40% cheaper than the average price of flights available within the next 90 days to this destination.

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

    One-way options have recently been found by users for as low as $82 on Frontier. Other airlines that offer cheap prices include American Airlines from $144 and Delta from $149 one-way.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ontario to Buffalo 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 Ontario to Buffalo?

    Currently, January is the cheapest month in which you can book a flight from Ontario to Buffalo (average of $256). Flying from Ontario to Buffalo in December is currently the most expensive (average of $337). 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

Traveling to a place near Ontario?

Book flights to Ontario if you plan to visit one of these locations
Williamsville
Amherst
Orchard Park
Batavia
Eden
Cheektowaga
West Seneca

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Top 3 airlines flying from Ontario to Buffalo

Discover the top 3 airlines that operate flights from Ontario to Buffalo. 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 June 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$236Average$445FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$286Average$456FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$346Average$432FlexibilityNo cancel feeOn-time63%

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