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Cheap flights from Buffalo to Ontario from C$ 204

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 12/4. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — ONT
17 Apr — 24 Apr1
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 March 2026.

Sat 25/412:09 p.m.
BUF
-
ONT
1 stop9h 24m
Delta
Tue 5/510:15 p.m.
ONT
-
BUF
1 stop9h 46m
Delta
Deal found 17/3C$ 407
Sun 26/47:50 p.m.
BUF
-
ONT
1 stop7h 20m
Southwest
Sun 10/57:40 p.m.
ONT
-
BUF
2 stops9h 10m
Southwest
Deal found 14/3C$ 414
Tue 21/412:09 p.m.
BUF
-
ONT
1 stop9h 24m
Delta
Sat 25/410:15 p.m.
ONT
-
BUF
1 stop9h 46m
Delta
Deal found 15/3C$ 434
Thu 9/410:35 a.m.
BUF
-
ONT
2 stops13h 01m
United Airlines
Thu 16/41:34 p.m.
ONT
-
BUF
1 stop6h 36m
United Airlines
Deal found 17/3C$ 500
Thu 9/45:15 a.m.
BUF
-
ONT
1 stop9h 05m
Southwest
Mon 13/411:55 p.m.
ONT
-
BUF
1 stop7h 25m
Southwest
Deal found 17/3C$ 530
Wed 10/66:00 a.m.
BUF
-
ONT
1 stop9h 05m
Southwest
Fri 12/69:25 p.m.
ONT
-
BUF
2 stops9h 55m
Southwest
Deal found 17/3C$ 537
Tue 19/55:50 p.m.
BUF
-
ONT
1 stop7h 45m
United Airlines
Fri 29/56:30 a.m.
ONT
-
BUF
1 stop7h 16m
United Airlines
Deal found 17/3C$ 544
Tue 5/55:50 p.m.
BUF
-
ONT
1 stop7h 45m
United Airlines
Fri 8/56:59 p.m.
ONT
-
BUF
2 stops11h 42m
United Airlines
Deal found 17/3C$ 550
Tue 5/510:35 a.m.
BUF
-
ONT
2 stops15h 24m
United Airlines
Wed 6/56:59 p.m.
ONT
-
BUF
2 stops11h 42m
United Airlines
Deal found 17/3C$ 557

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 March 2026.

Round-trip from

C$ 407

One-way from

C$ 204

Popular in

December

Cheapest in

October

Average price

C$ 776
Delta
  • Delta
  • 25/4-5/5
  • 2 total stops
  • 19h 10m total
  • Buffalo to Ontario
Search Deals
Southwest
  • Southwest
  • 12/4
  • 1 total stop
  • 7h 20m total
  • Buffalo to Ontario
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (C$ 46 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 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

Wed 10/6

6:00 a.m.-12:05 p.m.

1 stop9h 05m

Ontario

Fri 12/6

9:25 p.m.-10:20 a.m.

2 stops9h 55m

C$ 537

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Sun 24/5

5:58 p.m.-10:46 p.m.

1 stop7h 48m

Ontario

Fri 29/5

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

1 stop7h 16m

C$ 544

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Sat 23/5

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

1 stop7h 54m

Ontario

Fri 29/5

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

1 stop6h 40m

C$ 544

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Sun 24/5

5:58 p.m.-10:46 p.m.

1 stop7h 48m

Ontario

Sun 31/5

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

1 stop7h 22m

C$ 544
Quickest round-trip

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Fri 8/5

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

1 stop7h 40m

Ontario

Sat 9/5

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

1 stop6h 25m

C$ 571

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Tue 5/5

10:35 a.m.-8:36 p.m.

2 stops13h 01m

Ontario

Wed 6/5

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

1 stop6h 25m

C$ 578

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Tue 14/4

7:00 a.m.-6:02 p.m.

2 stops14h 02m

Ontario

Thu 16/4

6:49 p.m.-10:10 a.m.

2 stops12h 21m

C$ 667

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Wed 20/5

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

1 stop7h 45m

Ontario

Sat 30/5

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

1 stop6h 40m

C$ 668

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Fri 24/4

6:02 p.m.-10:31 p.m.

1 stop7h 29m

Ontario

Mon 4/5

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

2 stops11h 42m

C$ 687

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Wed 3/6

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

1 stop7h 54m

Ontario

Tue 9/6

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

2 stops13h 03m

C$ 768

Flights are sorted by cheapest round-trip flights first.

Deals found on 14/3

Showing 1-10 of 22 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, January is the cheapest month in which you can book a flight from Buffalo to Ontario (average of C$ 182). Flying from Buffalo to Ontario in June is currently the most expensive (average of C$ 309). 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.

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 18 March 2026.
See what other customers who have flown with Southwest from Buffalo to Ontario have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,320 reviews
Check prices

Entertainment

7.5

Overall

8.0

Crew

8.6

Boarding

8.1

Food

7.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,320 reviews
Southwest
8.0
Very good
4,320 reviews
Check prices

Entertainment

7.5

Overall

8.0

Crew

8.6

Boarding

8.1

Food

7.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

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 48m. Your travel time can differ by up to 1h 17m. The distance between Buffalo and Ontario is about 3487 km. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from Buffalo to Ontario round-trip?

    Flying on Southwest is currently your cheapest option to Ontario, with prices starting at C$ 447. Southwest is 29% cheaper than the average price of flights available within the next 90 days to this destination.

  • 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, January is the cheapest month in which you can book a flight from Buffalo to Ontario (average of C$ 182). Flying from Buffalo to Ontario in June is currently the most expensive (average of C$ 309). 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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Top airline flying from Buffalo to Ontario

Discover the top airline that operate flights from Buffalo to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 18 March 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapestC$ 447AverageC$ 830FlexibilityNo cancel feeOn-time63%
Search Southwest flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Buffalo to Ontario?

Cheapflights helps you search for flights from Buffalo to Ontario via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Buffalo to Ontario?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Buffalo to Ontario for you. Better yet — we are completely free to use.

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.

Can Cheapflights notify me if prices for flights from Buffalo to Ontario become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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