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Cheap flights from Buffalo to Ontario from C$ 267

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 21/7. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — ONT
16 Jun — 23 Jun1
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 17 May 2026.

Fri 31/74:40 p.m.
BUF
-
ONT
2 stops8h 30m
Southwest
Wed 12/811:55 p.m.
ONT
-
BUF
1 stop7h 50m
Southwest
Deal found 15/5C$ 601
Thu 15/104:00 p.m.
BUF
-
ONT
2 stops9h 35m
Southwest
Tue 27/1011:15 a.m.
ONT
-
BUF
2 stops9h 55m
Southwest
Deal found 15/5C$ 608
Mon 13/72:50 p.m.
BUF
-
ONT
1 stop10h 35m
Southwest
Tue 21/79:40 p.m.
ONT
-
BUF
1 stop7h 20m
Southwest
Deal found 16/5C$ 624
Sun 24/56:15 a.m.
BUF
-
ONT
1 stop7h 42m
Delta
Wed 27/512:07 p.m.
ONT
-
BUF
1 stop8h 52m
Delta
Deal found 12/5C$ 643
Tue 15/124:59 p.m.
BUF
-
ONT
1 stop8h 15m
Delta
Fri 25/127:00 a.m.
ONT
-
BUF
1 stop8h 37m
Delta
Deal found 17/5C$ 654
Tue 15/124:59 p.m.
BUF
-
ONT
1 stop8h 15m
Delta
Thu 24/127:00 a.m.
ONT
-
BUF
2 stops13h 50m
Delta
Deal found 17/5C$ 663
Tue 1/92:26 p.m.
BUF
-
ONT
1 stop8h 31m
United Airlines
Wed 30/97:00 a.m.
ONT
-
BUF
1 stop6h 47m
United Airlines
Deal found 15/5C$ 676
Mon 3/85:55 p.m.
BUF
-
ONT
1 stop7h 30m
Southwest
Fri 7/811:55 p.m.
ONT
-
BUF
1 stop7h 15m
Southwest
Deal found 13/5C$ 679

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 17 May 2026.

Round-trip from

C$ 601

One-way from

C$ 267

Popular in

April

Cheapest in

October

Average price

C$ 702
Southwest
  • Southwest
  • 31/7-12/8
  • 3 total stops
  • 16h 20m total
  • Buffalo to Ontario
Search Deals
Delta
  • Delta
  • 21/7
  • 1 total stop
  • 7h 38m total
  • Buffalo to Ontario
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (C$ 207 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (C$ 56 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 17 May 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

Fri 31/7

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

1 stop7h 30m

Ontario

Wed 12/8

11:55 p.m.-10:45 a.m.

1 stop7h 50m

C$ 635

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Fri 29/5

5:45 a.m.-3:15 p.m.

1 stop12h 30m

Ontario

Sun 31/5

12:55 p.m.-12:05 a.m.

1 stop8h 10m

C$ 704

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Sat 22/8

7:00 a.m.-6:16 p.m.

2 stops14h 16m

Ontario

Sat 5/9

1:18 p.m.-10:37 p.m.

1 stop6h 19m

C$ 755
Quickest round-trip

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Thu 6/8

6:04 p.m.-10:51 p.m.

1 stop7h 47m

Ontario

Tue 11/8

1:18 p.m.-10:37 p.m.

1 stop6h 19m

C$ 801

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Thu 20/8

8:55 a.m.-12:50 p.m.

1 stop6h 55m

Ontario

Mon 31/8

7:13 p.m.-9:14 a.m.

2 stops11h 01m

C$ 830

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Fri 29/5

5:57 p.m.-10:51 p.m.

1 stop7h 54m

Ontario

Wed 3/6

5:00 a.m.-9:03 p.m.

2 stops13h 03m

C$ 855

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Thu 2/7

6:04 p.m.-10:51 p.m.

1 stop7h 47m

Ontario

Thu 9/7

6:39 p.m.-10:00 a.m.

2 stops12h 21m

C$ 870

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Wed 5/8

6:04 p.m.-10:51 p.m.

1 stop7h 47m

Ontario

Tue 11/8

6:00 a.m.-9:07 p.m.

2 stops12h 07m

C$ 870

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Fri 31/7

6:04 p.m.-10:51 p.m.

1 stop7h 47m

Ontario

Tue 11/8

1:18 p.m.-10:37 p.m.

1 stop6h 19m

C$ 943

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Wed 10/6

6:04 p.m.-10:51 p.m.

1 stop7h 47m

Ontario

Wed 17/6

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

1 stop6h 40m

C$ 999

Flights are sorted by cheapest round-trip flights first.

Deals found on 14/5

Showing 1-10 of 21 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$ 421). Flying from Buffalo to Ontario in April is currently the most expensive (average of C$ 1,129). 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 and United Airlines can get you from Buffalo to Ontario in just under 7h 30m. Your travel time can differ by up to 6h 46m. 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$ 421). Flying from Buffalo to Ontario in April is currently the most expensive (average of C$ 1,129). 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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