HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$142+ 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 6/16. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — YYZ
May 4 — May 111
Sun 5/4
Sun 5/11
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Buffalo to Ontario with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 April 29, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$363
(Trip.com)

One-way from

$142
(Kiwi.com)
Provider with most accurate pricing for Buffalo-Toronto (YTO) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Buffalo-Toronto (YTO) flights.
Search Deals
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 April 29, 2025.

This Trip.com deal was found by Cheapflights users on 4/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2812:05 pmBUF - YUL
1 stop5h 35mMultiple Airlines
Sun 6/16:45 amYUL - BUF
2 stops25h 05mMultiple Airlines
Deal found 4/27$363
This United Airlines deal was found by Cheapflights users on 4/27. 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 5/288:30 amBUF - YUL
1 stop4h 39mUnited Airlines
Sun 6/16:15 amYUL - BUF
1 stop14h 46mUnited Airlines
Deal found 4/27$365
This Air Canada deal was found by Cheapflights users on 4/28. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/287:00 amBUF - YUL
2 stops12h 26mAir Canada
Sun 6/16:15 amYUL - BUF
1 stop14h 46mAir Canada
Deal found 4/28$370
This American Airlines deal was found by Cheapflights users on 4/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/285:30 amBUF - YUL
2 stops11h 25mAmerican Airlines
Wed 6/47:47 amYUL - BUF
1 stop15h 04mAmerican Airlines
Deal found 4/28$375
This Delta deal was found by Cheapflights users on 4/29. 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.
Sat 8/27:00 amBUF - YYZ
1 stop16h 13mDelta
Wed 8/67:55 amYYZ - BUF
1 stop9h 21mDelta
Deal found 4/29$415
This WestJet deal was found by Cheapflights users on 4/28. 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/127:39 pmBUF - YUL
2 stops28h 58mWestJet
Thu 6/196:45 pmYUL - BUF
1 stop29h 06mWestJet
Deal found 4/28$465
This Kiwi.com deal was found by Cheapflights users on 4/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/159:51 amBUF - YYZ
1 stop12h 53mMultiple Airlines
Sat 5/179:50 amYYZ - BUF
1 stop23h 11mMultiple Airlines
Deal found 4/28$485
This Delta deal was found by Cheapflights users on 4/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/211:59 pmBUF - YUL
1 stop7h 27mDelta
Tue 10/286:00 amYUL - BUF
1 stop8h 59mDelta
Deal found 4/28$526
This United Airlines deal was found by Cheapflights users on 4/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/66:00 amBUF - YYZ
1 stop10h 01mUnited Airlines
Sun 8/108:10 amYYZ - BUF
1 stop25h 35mUnited Airlines
Deal found 4/29$562
This JetBlue Airways deal was found by Cheapflights users on 4/28. 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 JetBlue Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/276:10 amBUF - YTZ
1 stop5h 24mMultiple Airlines
Tue 6/31:25 pmYTZ - BUF
1 stop20h 11mMultiple Airlines
Deal found 4/28$612
This Expedia deal was found by Cheapflights users on 4/29. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/1412:59 pmBUF - YYZ
2 stops19h 12mWestJet
Sat 6/2111:15 pmYYZ - BUF
2 stops19h 18mWestJet
Deal found 4/29$1,316

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 April 29, 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

Wed 5/28

12:05 pm-5:40 pm

1 stop5h 35m

Montreal Pierre Elliott Trudeau Intl

Sun 6/1

6:45 am-7:50 am

2 stops25h 05m

$363

BuffaloMontreal

BUF - YUL

BUFYUL

Buffalo

Wed 5/28

6:05 am-10:05 am

1 stop4h 00m

Montreal Pierre Elliott Trudeau Intl

Wed 6/4

5:05 pm-10:46 pm

1 stop5h 41m

$365

BuffaloMontreal

BUF - YUL

BUFYUL

Buffalo

Wed 5/28

7:00 am-7:26 pm

2 stops12h 26m

Montreal Pierre Elliott Trudeau Intl

Sun 6/1

6:15 am-9:01 pm

1 stop14h 46m

$370

BuffaloMontreal

BUF - YUL

BUFYUL

Buffalo

Wed 5/28

5:30 am-4:55 pm

2 stops11h 25m

Montreal Pierre Elliott Trudeau Intl

Wed 6/4

7:47 am-10:51 pm

1 stop15h 04m

$375

BuffaloToronto

BUF - YYZ

BUFYYZ

Buffalo

Sat 8/2

7:00 am-11:13 pm

1 stop16h 13m

Toronto Pearson Intl

Wed 8/6

7:55 am-5:16 pm

1 stop9h 21m

$415

BuffaloMontreal

BUF - YUL

BUFYUL

Buffalo

Thu 6/12

7:39 pm-12:37 am

2 stops28h 58m

Montreal Pierre Elliott Trudeau Intl

Thu 6/19

6:45 pm-11:51 pm

1 stop29h 06m

$465

BuffaloToronto

BUF - YYZ

BUFYYZ

Buffalo

Thu 5/15

9:51 am-10:44 pm

1 stop12h 53m

Toronto Pearson Intl

Sat 5/17

9:50 am-9:01 am

1 stop23h 11m

$485

BuffaloMontreal

BUF - YUL

BUFYUL

Buffalo

Tue 6/3

7:55 pm-10:16 am

2 stops14h 21m

Montreal Pierre Elliott Trudeau Intl

Sat 6/7

6:35 am-11:46 pm

2 stops17h 11m

$506

BuffaloToronto

BUF - YYZ

BUFYYZ

Buffalo

Wed 8/6

6:00 am-4:01 pm

1 stop10h 01m

Toronto Pearson Intl

Sun 8/10

8:10 am-9:45 am

1 stop25h 35m

$562

BuffaloToronto

BUF - YTZ

BUFYTZ

Buffalo

Tue 5/27

6:10 am-11:34 am

1 stop5h 24m

Toronto Island

Tue 6/3

1:25 pm-9:36 am

1 stop20h 11m

$612

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/27

Showing 1-10 of 24 results
1
2
3

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 April 29, 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
7,929 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

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
7,929 reviews
Delta
8.0
Very good
7,929 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

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
8,696 reviews
Delta
8.0
Very good
7,929 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

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
7,929 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

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
2,823 reviews
Delta
8.0
Very good
7,929 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

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
7.0
Good
9,244 reviews
Delta
8.0
Very good
7,929 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.5

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 American Airlines. According to our data, you can fly for as low as $183. Users have also found prices from $184 and $223 on Delta and WestJet, 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 - Toronto Island 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 $359). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Buffalo to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
Newark to Pearson Intl flights
Newark to Toronto Island flights
Newark to Vancouver Intl flights
John F Kennedy Intl to Vancouver Intl flights
LaGuardia to Pierre Elliott Trudeau Intl flights
John F Kennedy Intl to Pearson Intl flights
Newark to Pierre Elliott Trudeau Intl flights
John F Kennedy Intl to Calgary flights
LaGuardia to Pearson Intl flights
Newark to Calgary flights
John F Kennedy Intl to Pierre Elliott Trudeau Intl flights
LaGuardia to Vancouver Intl flights
LaGuardia to Calgary flights
John F Kennedy Intl to Toronto Island flights
Newark to Québec City flights
Newark to Halifax flights
John F Kennedy Intl to Abbotsford flights
LaGuardia to Halifax flights
Newark to Ottawa flights
John F Kennedy Intl to Halifax flights
John F Kennedy Intl to Québec City flights
LaGuardia to Toronto Island flights
LaGuardia to Québec City flights
John F Kennedy Intl to Edmonton flights
Newark to Edmonton flights
Buffalo to Vancouver Intl flights
John F Kennedy Intl to Ottawa flights
LaGuardia to Ottawa flights
LaGuardia to Edmonton flights
Newark to Abbotsford flights
Newark to Winnipeg flights
John F Kennedy Intl to Winnipeg flights
Newark to St. John's flights
White Plains to Pearson Intl flights
Albany to Calgary flights
John F Kennedy Intl to St. John's flights
Syracuse to Vancouver Intl flights
LaGuardia to Winnipeg flights
John F Kennedy Intl to Charlottetown flights
LaGuardia to St. John's flights
John F Kennedy Intl to Victoria flights
John F Kennedy Intl to Hamilton flights
Newark to Victoria flights
LaGuardia to Victoria flights
LaGuardia to Abbotsford flights
LaGuardia to Charlottetown flights
Newark to Charlottetown flights
Buffalo to Calgary flights
Albany to Pearson Intl flights
Rochester to Calgary flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.