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$165+ 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 9/12. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — YYZ
ago. 4 — ago. 111
lun. 8/4
lun. 8/11
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 julio 30, 2025.

Round-trip from

$354
(Delta)

One-way from

$165
(Kiwi.com)
From Buffalo to Ontario
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One-way flight from Buffalo to Ontario
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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 julio 30, 2025.

This Delta deal was found by Cheapflights users on 7/30. 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.
mar. 9/166:03 amBUF - YYZ
1 stop10h 05mDelta
sáb. 9/206:03 amYYZ - BUF
1 stop9h 05mDelta
Deal found 7/30$354
This Kiwi.com deal was found by Cheapflights users on 7/28. 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.
vie. 9/126:59 pmBUF - YUL
1 stop19h 21mMultiple Airlines
vie. 9/196:45 amYUL - BUF
2 stops11h 29mMultiple Airlines
Deal found 7/28$372
This Kiwi.com deal was found by Cheapflights users on 7/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/126:59 pmBUF - YOW
1 stop21h 58mMultiple Airlines
vie. 9/197:00 amYOW - BUF
2 stops11h 14mMultiple Airlines
Deal found 7/29$417
This American Airlines deal was found by Cheapflights users on 7/30. 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.
dom. 9/145:38 amBUF - YYZ
1 stop10h 55mAmerican Airlines
mar. 9/2312:45 pmYYZ - BUF
1 stop9h 06mAmerican Airlines
Deal found 7/30$423
This American Airlines deal was found by Cheapflights users on 7/30. 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.
vie. 9/126:28 pmBUF - YUL
1 stop15h 18mAmerican Airlines
vie. 9/195:15 pmYUL - BUF
1 stop17h 51mAmerican Airlines
Deal found 7/30$467
This United deal was found by Cheapflights users on 7/29. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/286:00 amBUF - YYZ
1 stop11h 49mMultiple Airlines
vie. 11/72:15 pmYYZ - BUF
1 stop19h 48mMultiple Airlines
Deal found 7/29$498
This United Airlines deal was found by Cheapflights users on 7/29. 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.
mié. 8/2710:30 amBUF - YYZ
1 stop11h 44mUnited Airlines
mié. 9/34:30 pmYYZ - BUF
1 stop7h 28mUnited Airlines
Deal found 7/29$547
This United Airlines deal was found by Cheapflights users on 7/28. 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.
vie. 8/298:00 pmBUF - YUL
1 stop15h 30mUnited Airlines
dom. 8/319:15 amYUL - BUF
1 stop14h 44mUnited Airlines
Deal found 7/28$630
This United Airlines deal was found by Cheapflights users on 7/29. 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.
mar. 8/268:00 pmBUF - YOW
1 stop18h 27mUnited Airlines
mar. 9/27:29 pmYOW - BUF
1 stop18h 37mUnited Airlines
Deal found 7/29$662
This United deal was found by Cheapflights users on 7/27. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/1310:37 amBUF - YQT
2 stops12h 23mMultiple Airlines
lun. 11/1711:05 amYQT - BUF
2 stops24h 28mMultiple Airlines
Deal found 7/27$810
This United Airlines deal was found by Cheapflights users on 7/30. 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.
sáb. 9/136:00 amBUF - YQT
2 stops9h 45mUnited Airlines
sáb. 9/205:15 amYQT - BUF
2 stops8h 07mUnited Airlines
Deal found 7/30$841
This Air Canada deal was found by Cheapflights users on 7/30. 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.
vie. 10/107:07 amBUF - YOW
2 stops7h 57mAir Canada
jue. 10/1611:55 amYOW - BUF
2 stops9h 18mAir Canada
Deal found 7/30$872

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 julio 30, 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

BuffaloToronto

BUF - YYZ

BUFYYZ

Buffalo

mar. 9/16

7:00 am-5:28 pm

1 stop10h 28m

Toronto Pearson Intl

mié. 9/24

6:03 am-3:08 pm

1 stop9h 05m

$354

BuffaloMontreal

BUF - YUL

BUFYUL

Buffalo

vie. 9/12

6:59 pm-2:20 pm

1 stop19h 21m

Montreal Pierre Elliott Trudeau Intl

vie. 9/19

6:45 am-6:14 pm

2 stops11h 29m

$372

BuffaloOttawa

BUF - YOW

BUFYOW

Buffalo

vie. 9/12

6:59 pm-4:57 pm

1 stop21h 58m

Ottawa

vie. 9/19

7:00 am-6:14 pm

2 stops11h 14m

$417

BuffaloToronto

BUF - YYZ

BUFYYZ

Buffalo

dom. 9/14

5:38 am-4:33 pm

1 stop10h 55m

Toronto Pearson Intl

mar. 9/23

12:45 pm-9:51 pm

1 stop9h 06m

$423

BuffaloMontreal

BUF - YUL

BUFYUL

Buffalo

vie. 9/12

6:28 pm-9:46 am

1 stop15h 18m

Montreal Pierre Elliott Trudeau Intl

vie. 9/19

5:15 pm-11:06 am

1 stop17h 51m

$467

BuffaloToronto

BUF - YYZ

BUFYYZ

Buffalo

mar. 10/28

6:00 am-5:49 pm

1 stop11h 49m

Toronto Pearson Intl

vie. 11/7

2:15 pm-10:03 am

1 stop19h 48m

$498

BuffaloToronto

BUF - YYZ

BUFYYZ

Buffalo

mié. 8/27

10:30 am-10:14 pm

1 stop11h 44m

Toronto Pearson Intl

mié. 9/3

4:30 pm-11:58 pm

1 stop7h 28m

$547

BuffaloMontreal

BUF - YUL

BUFYUL

Buffalo

vie. 8/29

8:00 pm-11:30 am

1 stop15h 30m

Montreal Pierre Elliott Trudeau Intl

dom. 8/31

9:15 am-11:59 pm

1 stop14h 44m

$630

BuffaloOttawa

BUF - YOW

BUFYOW

Buffalo

mar. 8/26

8:00 pm-2:27 pm

1 stop18h 27m

Ottawa

mar. 9/2

7:29 pm-2:06 pm

1 stop18h 37m

$662

BuffaloThunder Bay

BUF - YQT

BUFYQT

Buffalo

jue. 11/13

10:37 am-11:00 pm

2 stops12h 23m

Thunder Bay

lun. 11/17

11:05 am-11:33 am

2 stops24h 28m

$810

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 30 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
No data available for this route at this time. Please check back soon.

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 julio 30, 2025.
Peruse reviews from past customers who have flown with Delta, United Airlines, and American Airlines from Buffalo to Ontario to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,980 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

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
7,980 reviews
Delta
8.0
Very good
7,980 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

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
8,896 reviews
Delta
8.0
Very good
7,980 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

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
7,980 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

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
2,975 reviews
Delta
8.0
Very good
7,980 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

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
9,837 reviews
Delta
8.0
Very good
7,980 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

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 $172. Users have also found prices from $209 and $215 on Sun Country Air and American 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 August is currently the most expensive (average of $348). 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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