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Cheap flights from Buffalo to Ontario from C$ 256

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 28/4. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — ONT
1 May — 8 May1
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 1 April 2026.

Sat 2/56:00 a.m.
BUF
-
ONT
1 stop8h 36m
Delta
Tue 5/510:15 p.m.
ONT
-
BUF
1 stop9h 46m
Delta
Deal found 31/3C$ 511
Wed 19/812:09 p.m.
BUF
-
ONT
1 stop8h 52m
Delta
Tue 25/87:00 a.m.
ONT
-
BUF
1 stop8h 43m
Delta
Deal found 28/3C$ 581
Wed 13/511:00 a.m.
BUF
-
ONT
1 stop8h 20m
Southwest
Sun 17/59:55 p.m.
ONT
-
BUF
1 stop6h 55m
Southwest
Deal found 31/3C$ 588
Wed 29/41:45 p.m.
BUF
-
ONT
1 stop10h 22m
American Airlines
Sun 3/57:35 p.m.
ONT
-
BUF
2 stops11h 43m
American Airlines
Deal found 29/3C$ 593
Tue 1/93:52 p.m.
BUF
-
ONT
1 stop9h 48m
JetBlue
Tue 15/910:56 p.m.
ONT
-
BUF
1 stop10h 01m
JetBlue
Deal found 28/3C$ 621
Wed 19/810:54 a.m.
BUF
-
ONT
1 stop10h 25m
United Airlines
Thu 27/81:18 p.m.
ONT
-
BUF
1 stop7h 05m
United Airlines
Deal found 28/3C$ 623
Wed 19/86:16 a.m.
BUF
-
ONT
2 stops14h 45m
Delta
Sun 30/810:59 p.m.
ONT
-
BUF
1 stop9h 16m
Delta
Deal found 28/3C$ 630

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 1 April 2026.

Round-trip from

C$ 511

One-way from

C$ 256

Popular in

December

Cheapest in

October

Average price

C$ 844
Delta
  • Delta
  • 2/5-5/5
  • 2 total stops
  • 18h 22m total
  • Buffalo to Ontario
Search Deals
United Airlines
  • United Airlines
  • 28/4
  • 1 total stop
  • 7h 29m total
  • Buffalo to Ontario
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (C$ 48 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 37 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
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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 1 April 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

Tue 30/6

5:52 p.m.-10:51 p.m.

1 stop7h 59m

Ontario

Tue 7/7

5:00 a.m.-8:41 p.m.

2 stops12h 41m

C$ 588

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Wed 29/4

8:20 a.m.-1:15 p.m.

1 stop7h 55m

Ontario

Sun 3/5

11:55 p.m.-10:15 a.m.

1 stop7h 20m

C$ 588

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Mon 28/9

11:45 a.m.-4:10 p.m.

1 stop7h 25m

Ontario

Tue 13/10

11:15 a.m.-12:10 a.m.

2 stops9h 55m

C$ 630

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Fri 19/6

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

1 stop7h 54m

Ontario

Wed 24/6

6:30 p.m.-9:51 a.m.

2 stops12h 21m

C$ 678

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Sat 27/6

4:50 p.m.-10:50 p.m.

2 stops9h 00m

Ontario

Sat 4/7

11:55 p.m.-2:25 p.m.

2 stops11h 30m

C$ 678

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Thu 30/7

4:05 p.m.-10:10 p.m.

2 stops9h 05m

Ontario

Wed 5/8

8:35 a.m.-9:05 p.m.

2 stops9h 30m

C$ 678

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Thu 30/4

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

1 stop7h 40m

Ontario

Tue 5/5

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

1 stop6h 54m

C$ 680

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Wed 1/7

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

1 stop9h 05m

Ontario

Wed 8/7

11:55 p.m.-3:30 p.m.

1 stop12h 35m

C$ 713

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Thu 6/8

5:12 p.m.-9:44 p.m.

1 stop7h 32m

Ontario

Mon 17/8

12:00 p.m.-11:58 p.m.

1 stop8h 58m

C$ 719

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Thu 21/5

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

1 stop7h 54m

Ontario

Fri 5/6

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

1 stop6h 40m

C$ 818

Flights are sorted by cheapest round-trip flights first.

Deals found on 29/3

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, January 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 1 April 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
4,335 reviews
Check prices

Crew

8.6

Entertainment

7.5

Food

7.0

Boarding

8.1

Overall

8.0

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
4,335 reviews
Southwest
8.0
Very good
4,335 reviews
Check prices

Crew

8.6

Entertainment

7.5

Food

7.0

Boarding

8.1

Overall

8.0

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?

    United Airlines and Southwest can get you from Buffalo to Ontario in just under 7h 55m. Your travel time can differ by up to 04m. 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$ 455. 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$ 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 1 April 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapestC$ 455AverageC$ 845FlexibilityNo 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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