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Cheap flights from Buffalo to Ontario from C$ 229

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 27/2. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — ONT
13 Feb — 20 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap 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 14 January 2026.

Round-trip from

C$ 433

One-way from

C$ 229

Popular in

December

Cheapest in

October

Average price

C$ 566
United Airlines
  • United Airlines
  • 18/2-24/2
  • 3 total stops
  • 20h 55m total
  • Buffalo to Ontario
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Frontier
  • Frontier
  • 27/2
  • 2 total stops
  • 32h 35m total
  • Buffalo to Ontario
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (C$ 51 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 34 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Find 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 14 January 2026.

Wed 18/26:00 a.m.
BUF
-
ONT
2 stops14h 41m
United Airlines
Tue 24/21:45 p.m.
ONT
-
BUF
1 stop6h 14m
United Airlines
Deal found 12/1C$ 433
Tue 19/54:00 p.m.
BUF
-
ONT
1 stop9h 09m
JetBlue
Sun 24/511:25 p.m.
ONT
-
BUF
1 stop9h 04m
JetBlue
Deal found 12/1C$ 454
Sat 16/54:00 p.m.
BUF
-
ONT
1 stop9h 09m
JetBlue
Sat 23/511:25 p.m.
ONT
-
BUF
1 stop8h 45m
JetBlue
Deal found 12/1C$ 508
Wed 13/54:57 p.m.
BUF
-
ONT
1 stop8h 12m
Delta
Sat 23/512:00 p.m.
ONT
-
BUF
2 stops19h 35m
Delta
Deal found 12/1C$ 543
Tue 24/26:00 a.m.
BUF
-
ONT
1 stop9h 02m
Delta
Fri 27/21:15 p.m.
ONT
-
BUF
1 stop7h 11m
Delta
Deal found 12/1C$ 544
Wed 29/46:00 a.m.
BUF
-
ONT
1 stop8h 29m
Delta
Wed 29/410:15 p.m.
ONT
-
BUF
1 stop9h 46m
Delta
Deal found 12/1C$ 551
Tue 24/34:40 p.m.
BUF
-
ONT
1 stop8h 00m
Southwest
Sun 29/311:55 p.m.
ONT
-
BUF
1 stop7h 35m
Southwest
Deal found 12/1C$ 552
Sat 16/54:00 p.m.
BUF
-
ONT
1 stop9h 09m
JetBlue
Fri 22/511:25 p.m.
ONT
-
BUF
1 stop9h 04m
JetBlue
Deal found 12/1C$ 562
Sat 28/28:25 a.m.
BUF
-
ONT
1 stop7h 18m
United Airlines
Wed 4/31:45 p.m.
ONT
-
BUF
1 stop6h 14m
United Airlines
Deal found 11/1C$ 565
Wed 13/512:07 p.m.
BUF
-
ONT
1 stop9h 08m
Delta
Mon 25/510:59 p.m.
ONT
-
BUF
1 stop9h 03m
Delta
Deal found 12/1C$ 566

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 14 January 2026.
Use the filters below to find and compare flights from Buffalo to Ontario that are best for you.

Fly from

Buffalo

Fly to

Ontario

Route

Depart

Return

Price

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Tue 10/2

6:00 a.m.-11:31 a.m.

1 stop8h 31m

Ontario

Wed 18/2

10:20 p.m.-11:00 a.m.

1 stop9h 40m

C$ 454

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Wed 18/2

8:25 a.m.-12:43 p.m.

1 stop7h 18m

Ontario

Tue 24/2

1:45 p.m.-10:59 p.m.

1 stop6h 14m

C$ 475

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Wed 13/5

4:57 p.m.-10:09 p.m.

1 stop8h 12m

Ontario

Sat 23/5

12:00 p.m.-10:35 a.m.

2 stops19h 35m

C$ 543

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Wed 29/4

6:00 a.m.-11:29 a.m.

1 stop8h 29m

Ontario

Wed 29/4

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

1 stop9h 46m

C$ 551

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Sat 28/2

8:25 a.m.-12:43 p.m.

1 stop7h 18m

Ontario

Wed 4/3

1:45 p.m.-10:59 p.m.

1 stop6h 14m

C$ 565

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Thu 14/5

4:00 p.m.-10:09 p.m.

1 stop9h 09m

Ontario

Wed 20/5

11:25 p.m.-11:29 a.m.

1 stop9h 04m

C$ 570

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Tue 10/2

10:45 a.m.-8:58 p.m.

2 stops13h 13m

Ontario

Tue 17/2

1:45 p.m.-10:59 p.m.

1 stop6h 14m

C$ 572

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Fri 15/5

4:57 p.m.-10:09 p.m.

1 stop8h 12m

Ontario

Sat 23/5

12:00 p.m.-10:35 a.m.

2 stops19h 35m

C$ 611

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Sat 28/2

8:25 a.m.-12:43 p.m.

1 stop7h 18m

C$ 283

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Tue 31/3

5:50 p.m.-11:50 p.m.

2 stops9h 00m

C$ 283

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/1

Showing 1-10 of 19 results
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, May is the cheapest month in which you can book a flight from Buffalo to Ontario (average of C$ 185). Flying from Buffalo to Ontario in June is currently the most expensive (average of C$ 315). 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 14 January 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
4,257 reviews
Check prices

Boarding

8.1

Overall

8.0

Crew

8.6

Food

7.0

Entertainment

7.5

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
4,257 reviews
Southwest
8.0
Very good
4,257 reviews
Check prices

Boarding

8.1

Overall

8.0

Crew

8.6

Food

7.0

Entertainment

7.5

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?

    Delta and United Airlines can get you from Buffalo to Ontario in just under 7h 18m. Your travel time can differ by up to 1h 13m. 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$ 515. Southwest is 19% 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, May is the cheapest month in which you can book a flight from Buffalo to Ontario (average of C$ 185). Flying from Buffalo to Ontario in June is currently the most expensive (average of C$ 315). 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 14 January 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapestC$ 515AverageC$ 842FlexibilityNo cancel feeOn-time63%
Search Southwest flights

Fly with Cheapflights

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

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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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