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Cheap flights from Buffalo to Ontario from C$ 252

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 21/4. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — ONT
21 Apr — 28 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 22 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
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$ 501
Sat 18/46:00 a.m.
BUF
-
ONT
1 stop8h 36m
Delta
Sat 25/410:15 p.m.
ONT
-
BUF
1 stop9h 46m
Delta
Deal found 21/3C$ 506
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$ 531
Tue 19/55:50 p.m.
BUF
-
ONT
1 stop7h 45m
United Airlines
Sun 31/56:30 a.m.
ONT
-
BUF
1 stop7h 22m
United Airlines
Deal found 17/3C$ 545
Tue 5/510:35 a.m.
BUF
-
ONT
2 stops15h 00m
United Airlines
Wed 6/51:40 p.m.
ONT
-
BUF
1 stop6h 25m
United Airlines
Deal found 17/3C$ 551
Tue 26/58:00 p.m.
BUF
-
ONT
1 stop27h 45m
JetBlue
Fri 29/510:00 p.m.
ONT
-
BUF
1 stop7h 58m
JetBlue
Deal found 19/3C$ 568
Wed 8/46:40 a.m.
BUF
-
ONT
1 stop7h 55m
Southwest
Mon 13/411:55 p.m.
ONT
-
BUF
1 stop7h 25m
Southwest
Deal found 17/3C$ 572
Sat 25/47:00 a.m.
BUF
-
ONT
2 stops13h 47m
United Airlines
Sat 2/51:40 p.m.
ONT
-
BUF
1 stop6h 25m
United Airlines
Deal found 17/3C$ 579
Thu 23/43:01 p.m.
BUF
-
ONT
2 stops9h 58m
American Airlines
Tue 28/411:59 p.m.
ONT
-
BUF
2 stops12h 30m
American Airlines
Deal found 20/3C$ 580

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 22 March 2026.

Round-trip from

C$ 501

One-way from

C$ 252

Popular in

December

Cheapest in

October

Average price

C$ 778
United Airlines
  • United Airlines
  • 9/4-16/4
  • 3 total stops
  • 19h 37m total
  • Buffalo to Ontario
Search Deals
Delta
  • Delta
  • 21/4
  • 1 total stop
  • 8h 36m total
  • Buffalo to Ontario
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (C$ 47 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 22 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

Sat 25/4

12:09 p.m.-6:33 p.m.

1 stop9h 24m

Ontario

Tue 5/5

10:15 p.m.-11:01 a.m.

1 stop9h 46m

C$ 407

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$ 545

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Fri 8/5

6:15 a.m.-10:57 a.m.

1 stop7h 42m

Ontario

Mon 11/5

10:00 p.m.-3:02 p.m.

2 stops14h 02m

C$ 661

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$ 669

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Fri 22/5

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

1 stop7h 54m

Ontario

Sun 31/5

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

1 stop7h 22m

C$ 682

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Tue 21/4

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$ 683

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Sun 5/4

12:25 p.m.-5:50 p.m.

1 stop8h 25m

Ontario

Wed 8/4

9:45 p.m.-10:15 a.m.

2 stops9h 30m

C$ 691

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Thu 7/5

9:45 a.m.-9:48 p.m.

2 stops15h 03m

Ontario

Mon 11/5

10:00 p.m.-3:02 p.m.

2 stops14h 02m

C$ 709

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Tue 21/4

8:30 a.m.-6:02 p.m.

2 stops12h 32m

Ontario

Wed 29/4

1:38 p.m.-11:10 p.m.

1 stop6h 32m

C$ 711
Quickest round-trip

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Fri 24/4

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

1 stop7h 29m

Ontario

Tue 28/4

1:34 p.m.-11:10 p.m.

1 stop6h 36m

C$ 730

Flights are sorted by cheapest round-trip flights first.

Deals found on 21/3

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3

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$ 310). 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 22 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
4,324 reviews
Check prices

Food

7.0

Boarding

8.1

Overall

8.0

Crew

8.6

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,324 reviews
Southwest
8.0
Very good
4,324 reviews
Check prices

Food

7.0

Boarding

8.1

Overall

8.0

Crew

8.6

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

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 48m. Your travel time can differ by up to 1h 36m. 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$ 448. 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$ 310). 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

Browse thousands of different options on Cheapflights for your next trip

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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 22 March 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapestC$ 448AverageC$ 832FlexibilityNo cancel feeOn-time63%
Search Southwest flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

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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