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Cheap flights from Buffalo to Ontario from C$ 227

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 29/5. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — ONT
18 May — 25 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Buffalo to Ontario

Enter your travel dates to find the best prices.

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 18 April 2026.

Tue 2/66:40 a.m.
BUF
-
ONT
1 stop7h 55m
Southwest
Mon 8/611:55 p.m.
ONT
-
BUF
1 stop7h 30m
Southwest
Deal found 17/4C$ 524
Wed 22/75:12 p.m.
BUF
-
ONT
1 stop7h 32m
Delta
Wed 29/711:48 a.m.
ONT
-
BUF
1 stop9h 11m
Delta
Deal found 16/4C$ 571
Wed 27/54:55 p.m.
BUF
-
ONT
1 stop7h 53m
Delta
Tue 9/610:00 p.m.
ONT
-
BUF
1 stop10h 09m
Delta
Deal found 16/4C$ 577
Wed 27/54:55 p.m.
BUF
-
ONT
1 stop7h 53m
Delta
Mon 8/610:00 p.m.
ONT
-
BUF
1 stop10h 09m
Delta
Deal found 16/4C$ 579
Wed 22/75:12 p.m.
BUF
-
ONT
1 stop7h 32m
Delta
Fri 31/711:48 a.m.
ONT
-
BUF
1 stop9h 11m
Delta
Deal found 17/4C$ 612
Fri 29/56:15 a.m.
BUF
-
ONT
1 stop7h 42m
Delta
Mon 8/610:00 p.m.
ONT
-
BUF
1 stop10h 09m
Delta
Deal found 16/4C$ 613
Tue 5/55:50 p.m.
BUF
-
ONT
1 stop7h 45m
United Airlines
Wed 6/51:40 p.m.
ONT
-
BUF
1 stop6h 25m
United Airlines
Deal found 12/4C$ 653
Sat 2/56:15 a.m.
BUF
-
ONT
2 stops17h 45m
Delta
Thu 7/510:00 p.m.
ONT
-
BUF
2 stops22h 32m
Delta
Deal found 16/4C$ 655
Tue 28/46:00 a.m.
BUF
-
ONT
2 stops18h 00m
Delta
Thu 7/510:00 p.m.
ONT
-
BUF
2 stops22h 32m
Delta
Deal found 16/4C$ 661

Find 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 18 April 2026.

Round-trip from

C$ 524

One-way from

C$ 227

Popular in

December

Cheapest in

October

Average price

C$ 841
Southwest
  • Southwest
  • 2/6-8/6
  • 2 total stops
  • 15h 25m total
  • Buffalo to Ontario
Search Deals
Frontier
  • Frontier
  • 29/5
  • 2 total stops
  • 43h 19m total
  • Buffalo to Ontario
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (C$ 75 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 40 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

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 629,999 searches. Data last updated 18 April 2026.
Use the filters below to find and compare flights from Buffalo to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Thu 11/6

5:55 p.m.-10:25 p.m.

1 stop7h 30m

Ontario

Sun 14/6

9:40 p.m.-8:10 a.m.

1 stop7h 30m

C$ 653

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Sat 9/5

7:00 a.m.-12:38 p.m.

2 stops8h 38m

Ontario

Tue 12/5

1:40 p.m.-11:05 p.m.

1 stop6h 25m

C$ 659

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Fri 17/7

2:50 p.m.-10:25 p.m.

1 stop10h 35m

Ontario

Sun 19/7

9:40 p.m.-8:10 a.m.

1 stop7h 30m

C$ 659

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Mon 8/6

12:14 p.m.-11:45 p.m.

2 stops14h 31m

Ontario

Thu 11/6

5:59 p.m.-8:18 a.m.

2 stops11h 19m

C$ 666
Quickest round-trip

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Mon 8/6

4:10 p.m.-8:05 p.m.

1 stop6h 55m

Ontario

Thu 11/6

11:55 p.m.-10:25 a.m.

1 stop7h 30m

C$ 676

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Sat 6/6

5:52 p.m.-10:46 p.m.

1 stop7h 54m

Ontario

Sun 14/6

6:30 a.m.-4:52 p.m.

1 stop7h 22m

C$ 750

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Tue 12/5

7:00 a.m.-5:52 p.m.

2 stops13h 52m

Ontario

Wed 13/5

1:40 p.m.-11:05 p.m.

1 stop6h 25m

C$ 791

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Thu 21/5

5:52 p.m.-10:46 p.m.

1 stop7h 54m

Ontario

Fri 5/6

1:18 p.m.-10:58 p.m.

1 stop6h 40m

C$ 803

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Thu 14/5

5:55 p.m.-10:35 p.m.

1 stop7h 40m

Ontario

Tue 19/5

6:59 p.m.-9:41 a.m.

2 stops11h 42m

C$ 820
Cheapest one-way

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Fri 29/5

12:04 p.m.-9:48 p.m.

2 stops12h 44m

C$ 293

Flights are sorted by cheapest round-trip flights first.

Deals found on 14/4

Showing 1-10 of 19 resultsSorted by cheapest first
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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

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

Currently, October is the cheapest month in which you can book a flight from Buffalo to Ontario (average of C$ 419). Flying from Buffalo to Ontario in December is currently the most expensive (average of C$ 940). 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.

How much does it cost to fly round-trip from Buffalo to Ontario?

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.

  • How long is the flight from Buffalo to Ontario?

    Southwest, United Airlines, and Delta can get you from Buffalo to Ontario in just under 7h 30m. Your travel time can differ by up to 7h 01m. The distance between Buffalo and Ontario is about 3487 km. This flight may include one or multiple stops.

  • 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, October is the cheapest month in which you can book a flight from Buffalo to Ontario (average of C$ 419). Flying from Buffalo to Ontario in December is currently the most expensive (average of C$ 940). 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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Why should you use Cheapflights to find cheap flight tickets from Buffalo to Ontario?

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Can Cheapflights find flights from Buffalo to Ontario with no change fees?

Yes! Cheapflights helps users easily find flights from Buffalo to Ontario with no change fees.

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