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$191+ Cheap flights from Buffalo (BUF) to Ontario

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 6/28. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — YYZ
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from Buffalo to Ontario

Keep the following information in mind while searching for Buffalo to Ontario flight deals. Data was last updated June 12, 2025.

Round-trip from

$405
(American Airlines)

One-way from

$191
(eDestinos)
From Buffalo to Ontario
Search Deals
One-way flight from Buffalo to Ontario
Search Deals

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 June 12, 2025.

This American Airlines deal was found by Cheapflights users on 6/10. 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 9/67:35 amBUF - YUL
1 stop8h 55mAmerican Airlines
Wed 9/1012:30 pmYUL - BUF
1 stop9h 21mAmerican Airlines
Deal found 6/10$405
This American Airlines deal was found by Cheapflights users on 6/12. 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 8/75:40 pmBUF - YYZ
1 stop18h 56mAmerican Airlines
Mon 8/1110:38 amYYZ - BUF
1 stop11h 28mAmerican Airlines
Deal found 6/12$428
This Delta deal was found by Cheapflights users on 6/11. 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 8/252:19 pmBUF - YUL
1 stop7h 29mDelta
Thu 8/286:00 amYUL - BUF
1 stop7h 39mDelta
Deal found 6/11$441
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/48:50 amBUF - YYZ
1 stop13h 54mMultiple Airlines
Fri 7/114:00 pmYYZ - BUF
1 stop16h 52mMultiple Airlines
Deal found 6/11$448
This United Airlines deal was found by Cheapflights users on 6/12. 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.
Fri 9/2610:55 amBUF - YYZ
1 stop13h 03mUnited Airlines
Sun 9/289:00 pmYYZ - BUF
1 stop12h 58mUnited Airlines
Deal found 6/12$469
This Air Canada deal was found by Cheapflights users on 6/10. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/156:00 amBUF - YOW
1 stop10h 43mMultiple Airlines
Thu 7/172:48 pmYOW - BUF
1 stop8h 50mMultiple Airlines
Deal found 6/10$566
This Mytrip deal was found by Cheapflights users on 6/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/1111:29 amBUF - YTZ
2 stops27h 26mMultiple Airlines
Sat 7/125:15 pmYTZ - BUF
3 stops41h 35mMultiple Airlines
Deal found 6/10$574
This United deal was found by Cheapflights users on 6/10. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/276:00 amBUF - YUL
1 stop7h 28mMultiple Airlines
Tue 12/25:15 amYUL - BUF
2 stops7h 55mMultiple Airlines
Deal found 6/10$592
This Delta deal was found by Cheapflights users on 6/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/256:04 amBUF - YYZ
2 stops16h 54mDelta
Mon 7/2810:00 amYYZ - BUF
1 stop13h 19mDelta
Deal found 6/12$598
This United Airlines deal was found by Cheapflights users on 6/10. 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.
Thu 11/276:00 amBUF - YUL
2 stops10h 45mUnited Airlines
Tue 12/26:30 amYUL - BUF
1 stop10h 17mUnited Airlines
Deal found 6/10$629
This Air Canada deal was found by Cheapflights users on 6/12. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1110:50 amBUF - YUL
2 stops10h 50mAir Canada
Thu 8/1411:15 amYUL - BUF
2 stops9h 46mAir Canada
Deal found 6/12$692
This Flightnetwork deal was found by Cheapflights users on 6/11. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/277:00 amBUF - YTZ
2 stops9h 46mAir Canada
Sun 8/37:25 amYTZ - BUF
2 stops9h 30mAir Canada
Deal found 6/11$695

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 June 12, 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

BuffaloMontreal

BUF - YUL

BUFYUL

Buffalo

Sat 9/6

7:35 am-4:30 pm

1 stop8h 55m

Montreal Pierre Elliott Trudeau Intl

Wed 9/10

12:30 pm-9:51 pm

1 stop9h 21m

$405

BuffaloToronto

BUF - YYZ

BUFYYZ

Buffalo

Thu 8/7

5:40 pm-12:36 pm

1 stop18h 56m

Toronto Pearson Intl

Mon 8/11

10:38 am-10:06 pm

1 stop11h 28m

$428

BuffaloMontreal

BUF - YUL

BUFYUL

Buffalo

Mon 8/25

2:19 pm-9:48 pm

1 stop7h 29m

Montreal Pierre Elliott Trudeau Intl

Thu 8/28

6:00 am-1:39 pm

1 stop7h 39m

$441

BuffaloToronto

BUF - YYZ

BUFYYZ

Buffalo

Fri 7/4

8:50 am-10:44 pm

1 stop13h 54m

Toronto Pearson Intl

Fri 7/11

4:00 pm-8:52 am

1 stop16h 52m

$448

BuffaloToronto

BUF - YYZ

BUFYYZ

Buffalo

Fri 9/26

10:55 am-11:58 pm

1 stop13h 03m

Toronto Pearson Intl

Sun 9/28

9:00 pm-9:58 am

1 stop12h 58m

$469

BuffaloOttawa

BUF - YOW

BUFYOW

Buffalo

Tue 7/15

6:00 am-4:43 pm

1 stop10h 43m

Ottawa

Thu 7/17

2:48 pm-11:38 pm

1 stop8h 50m

$566

BuffaloToronto

BUF - YTZ

BUFYTZ

Buffalo

Fri 7/11

11:29 am-2:55 pm

2 stops27h 26m

Toronto Island

Sat 7/12

5:15 pm-10:50 am

3 stops41h 35m

$574

BuffaloMontreal

BUF - YUL

BUFYUL

Buffalo

Thu 11/27

6:00 am-1:28 pm

1 stop7h 28m

Montreal Pierre Elliott Trudeau Intl

Tue 12/2

5:15 am-1:10 pm

2 stops7h 55m

$592

BuffaloToronto

BUF - YYZ

BUFYYZ

Buffalo

Fri 7/25

6:04 am-10:58 pm

2 stops16h 54m

Toronto Pearson Intl

Mon 7/28

10:00 am-11:19 pm

1 stop13h 19m

$598

BuffaloMontreal

BUF - YUL

BUFYUL

Buffalo

Thu 11/27

6:00 am-4:45 pm

2 stops10h 45m

Montreal Pierre Elliott Trudeau Intl

Tue 12/2

6:30 am-4:47 pm

1 stop10h 17m

$629

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 33 results
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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

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Region of Ontario ranges from 2.0 - 3.3 inches per month. June is typically the wettest month, when rainfall can reach 3.3 in. February is typically the driest time to visit Region of Ontario when rainfall is around 2.0 in.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Region of Ontario, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 21.2 F).

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 June 12, 2025.
Get a feel of what it's like to fly with Delta, United Airlines 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.
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kymberlee,Oct 2024

JFK - ATL

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.
Delta
8.0
Very good
7,946 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kymberlee,Oct 2024

JFK - ATL

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kymberlee,Oct 2024

JFK - ATL

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kymberlee,Oct 2024

JFK - ATL

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.
WestJet
7.2
Good
2,868 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kymberlee,Oct 2024

JFK - ATL

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.
Air Canada
7.1
Good
9,537 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kymberlee,Oct 2024

JFK - ATL

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.

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 airport do you fly from for flights from Buffalo to Ontario?

    For a flight from Buffalo to Ontario, you will be flying from Buffalo. Buffalo (BUF) is just 8.3 mi from the center of the city.

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

    For one-way options, check prices for Delta. According to our data, you can fly for as low as $207. Users have also found prices from $232 and $255 on American Airlines and United Airlines, respectively.

  • What are the most popular routes from Buffalo to Region of Ontario?

    Most travelers choose Buffalo - Montreal Pierre Elliott Trudeau Intl, Buffalo - Toronto Pearson Intl or Buffalo - Ottawa when deciding on the best route from Buffalo to Region of Ontario.

  • 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 Region of Ontario?

    Currently, January is the cheapest month in which you can book a flight from Buffalo to Region of Ontario (average of $243). Flying from Buffalo to Region of Ontario in July is currently the most expensive (average of $353). 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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