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Cheap flights from Buffalo to Ontario from C$ 255

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 28/4. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — ONT
10 May — 17 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 10 April 2026.

Tue 2/66:15 a.m.
BUF
-
ONT
1 stop7h 42m
Delta
Tue 16/611:50 a.m.
ONT
-
BUF
1 stop9h 09m
Delta
Deal found 8/4C$ 530
Wed 10/66:00 a.m.
BUF
-
ONT
1 stop7h 40m
Delta
Tue 16/611:50 a.m.
ONT
-
BUF
1 stop9h 09m
Delta
Deal found 7/4C$ 535
Wed 15/75:52 p.m.
BUF
-
ONT
1 stop7h 59m
United Airlines
Wed 12/81:18 p.m.
ONT
-
BUF
1 stop7h 05m
United Airlines
Deal found 9/4C$ 542
Tue 26/55:52 p.m.
BUF
-
ONT
1 stop7h 54m
United Airlines
Tue 2/61:18 p.m.
ONT
-
BUF
1 stop6h 40m
United Airlines
Deal found 8/4C$ 553
Wed 5/85:12 p.m.
BUF
-
ONT
1 stop7h 32m
Delta
Tue 11/812:00 p.m.
ONT
-
BUF
1 stop8h 58m
Delta
Deal found 6/4C$ 556
Sat 30/56:15 a.m.
BUF
-
ONT
1 stop7h 42m
Delta
Wed 3/610:00 p.m.
ONT
-
BUF
1 stop10h 13m
Delta
Deal found 7/4C$ 558
Tue 5/58:37 a.m.
BUF
-
ONT
1 stop7h 01m
United Airlines
Sun 10/57:00 a.m.
ONT
-
BUF
1 stop6h 54m
United Airlines
Deal found 9/4C$ 577
Thu 6/86:05 a.m.
BUF
-
ONT
2 stops15h 18m
Delta
Tue 11/812:00 p.m.
ONT
-
BUF
1 stop8h 58m
Delta
Deal found 6/4C$ 581
Wed 13/54:55 p.m.
BUF
-
ONT
1 stop7h 53m
Delta
Sat 16/512:07 p.m.
ONT
-
BUF
1 stop8h 52m
Delta
Deal found 10/4C$ 584

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 10 April 2026.

Round-trip from

C$ 530

One-way from

C$ 255

Popular in

December

Cheapest in

October

Average price

C$ 851
Delta
  • Delta
  • 2/6-16/6
  • 2 total stops
  • 16h 51m total
  • Buffalo to Ontario
Search Deals
Delta
  • Delta
  • 28/4
  • 1 total stop
  • 8h 36m total
  • Buffalo to Ontario
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (C$ 69 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 39 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 10 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

Tue 12/5

7:00 a.m.-6:36 p.m.

2 stops14h 36m

Ontario

Sat 16/5

12:07 p.m.-11:59 p.m.

1 stop8h 52m

C$ 613

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Tue 12/5

12:18 p.m.-6:36 p.m.

1 stop9h 18m

Ontario

Sun 17/5

10:00 p.m.-11:13 a.m.

1 stop10h 13m

C$ 647

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Tue 5/5

5:50 p.m.-10:35 p.m.

1 stop7h 45m

Ontario

Wed 6/5

7:00 a.m.-4:54 p.m.

1 stop6h 54m

C$ 653
Quickest round-trip

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Sat 9/5

8:37 a.m.-12:38 p.m.

1 stop7h 01m

Ontario

Sat 16/5

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

1 stop6h 25m

C$ 688

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Tue 12/5

5:50 p.m.-10:35 p.m.

1 stop7h 45m

Ontario

Mon 18/5

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

2 stops11h 42m

C$ 689

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Fri 5/6

3:52 p.m.-11:34 p.m.

2 stops10h 42m

Ontario

Mon 8/6

10:00 p.m.-11:09 a.m.

1 stop10h 09m

C$ 708

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Tue 30/6

5:52 p.m.-10:51 p.m.

1 stop7h 59m

Ontario

Tue 7/7

6:30 a.m.-4:46 p.m.

1 stop7h 16m

C$ 708

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Sat 30/5

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

1 stop7h 54m

Ontario

Sat 6/6

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

1 stop6h 40m

C$ 732

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Thu 14/5

11:02 a.m.-10:35 p.m.

1 stop14h 33m

Ontario

Sat 16/5

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

2 stops11h 42m

C$ 797
Cheapest one-way

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Wed 29/4

6:05 a.m.-12:14 p.m.

2 stops9h 09m

C$ 339

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/4

Showing 1-10 of 20 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, May is the cheapest month in which you can book a flight from Buffalo to Ontario (average of C$ 177). Flying from Buffalo to Ontario in June is currently the most expensive (average of C$ 313). 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?

    Delta and United Airlines can get you from Buffalo to Ontario in just under 7h 42m. Your travel time can differ by up to 03m. 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, May is the cheapest month in which you can book a flight from Buffalo to Ontario (average of C$ 177). Flying from Buffalo to Ontario in June is currently the most expensive (average of C$ 313). 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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