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Cheap flights from Buffalo to Ontario from C$ 193

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 18/4. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — ONT
11 Apr — 18 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 12 March 2026.

Tue 28/46:00 a.m.
BUF
-
ONT
1 stop8h 36m
Delta
Fri 1/510:15 p.m.
ONT
-
BUF
1 stop9h 46m
Delta
Deal found 11/3C$ 403
Sat 23/52:41 p.m.
BUF
-
ONT
1 stop9h 04m
JetBlue
Wed 27/510:00 p.m.
ONT
-
BUF
1 stop7h 58m
JetBlue
Deal found 10/3C$ 482
Tue 21/46:00 a.m.
BUF
-
ONT
1 stop8h 36m
Delta
Sat 25/412:49 p.m.
ONT
-
BUF
1 stop7h 48m
Delta
Deal found 10/3C$ 498
Sun 24/56:25 a.m.
BUF
-
ONT
2 stops8h 54m
Delta
Fri 29/512:08 p.m.
ONT
-
BUF
1 stop8h 51m
Delta
Deal found 12/3C$ 506
Tue 21/46:00 a.m.
BUF
-
ONT
2 stops15h 33m
Delta
Tue 28/410:15 p.m.
ONT
-
BUF
2 stops12h 39m
Delta
Deal found 10/3C$ 513
Tue 7/46:02 p.m.
BUF
-
ONT
1 stop7h 29m
United Airlines
Tue 14/41:34 p.m.
ONT
-
BUF
1 stop6h 36m
United Airlines
Deal found 9/3C$ 515
Wed 22/41:45 p.m.
BUF
-
ONT
1 stop10h 22m
American Airlines
Mon 27/411:29 p.m.
ONT
-
BUF
1 stop10h 17m
American Airlines
Deal found 10/3C$ 520
Thu 28/56:00 a.m.
BUF
-
ONT
1 stop10h 15m
Southwest
Mon 1/69:55 p.m.
ONT
-
BUF
1 stop6h 55m
Southwest
Deal found 10/3C$ 521
Tue 5/58:37 a.m.
BUF
-
ONT
1 stop7h 01m
United Airlines
Wed 6/57:00 a.m.
ONT
-
BUF
1 stop6h 54m
United Airlines
Deal found 10/3C$ 532

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 12 March 2026.

Round-trip from

C$ 403

One-way from

C$ 193

Popular in

December

Cheapest in

October

Average price

C$ 770
Delta
  • Delta
  • 28/4-1/5
  • 2 total stops
  • 18h 22m total
  • Buffalo to Ontario
Search Deals
Frontier
  • Frontier
  • 18/4
  • 2 total stops
  • 12h 26m 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$ 35 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 12 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
Quickest round-trip

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Tue 5/5

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

1 stop7h 01m

Ontario

Wed 6/5

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

1 stop6h 54m

C$ 532

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Fri 1/5

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

1 stop7h 40m

Ontario

Tue 5/5

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

2 stops11h 42m

C$ 546

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Sat 16/5

5:11 p.m.-9:48 p.m.

1 stop7h 37m

Ontario

Wed 20/5

6:00 a.m.-6:51 p.m.

2 stops9h 51m

C$ 683

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Sat 9/5

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

1 stop7h 01m

Ontario

Fri 15/5

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

1 stop6h 54m

C$ 702

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Tue 14/7

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

1 stop7h 54m

Ontario

Tue 21/7

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

2 stops13h 03m

C$ 709
Cheapest one-way

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Sat 25/4

3:25 p.m.-9:20 p.m.

1 stop8h 55m

C$ 202

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Sat 18/4

5:00 p.m.-10:00 p.m.

1 stop8h 00m

C$ 236

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Tue 12/5

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

1 stop7h 45m

C$ 270

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Sun 10/5

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

1 stop7h 40m

C$ 270
Quickest one-way

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Tue 21/4

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

1 stop7h 29m

C$ 304

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/3

Showing 1-10 of 16 resultsSorted by cheapest first
1
2

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$ 181). Flying from Buffalo to Ontario in June is currently the most expensive (average of C$ 307). 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 12 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
4,319 reviews
Check prices

Overall

8.0

Comfort

8.0

Food

7.0

Entertainment

7.5

Crew

8.6

Boarding

8.1

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
4,319 reviews
Southwest
8.0
Very good
4,319 reviews
Check prices

Overall

8.0

Comfort

8.0

Food

7.0

Entertainment

7.5

Crew

8.6

Boarding

8.1

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?

    United Airlines can get you from Buffalo to Ontario in just under 7h 01m. Your travel time can differ by up to . The distance between Buffalo and Ontario is about 3487 km.

  • 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$ 443. 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$ 181). Flying from Buffalo to Ontario in June is currently the most expensive (average of C$ 307). 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 12 March 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapestC$ 443AverageC$ 823FlexibilityNo 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.

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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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