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Cheap flights from Buffalo to Ontario from C$ 205

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 3/9. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — ONT
19 Aug — 26 Aug1
1 adult

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 August 2025.

Round-trip from

C$ 409

One-way from

C$ 205

Popular in

December

Cheapest in

September

Average price

C$ 505
Delta
  • Delta
  • 6/9-15/9
  • 2 total stops
  • 17h 36m total
  • Buffalo to Ontario
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Delta
  • Delta
  • 5/9
  • 1 total stop
  • 7h 35m total
  • Buffalo to Ontario
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (C$ 141 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease (C$ 41 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Buffalo to Ontario

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 August 2025.

Wed 3/96:00 a.m.BUF - ONT
1 stop7h 35mDelta
Sun 14/910:00 p.m.ONT - BUF
1 stop10h 01mDelta
Deal found 13/8C$ 409
Wed 3/96:00 a.m.BUF - ONT
1 stop7h 35mDelta
Sat 13/97:05 a.m.ONT - BUF
2 stops14h 16mDelta
Deal found 13/8C$ 416
Fri 22/84:55 p.m.BUF - ONT
1 stop9h 55mFrontier
Sun 24/812:59 a.m.ONT - BUF
1 stop12h 01mFrontier
Deal found 13/8C$ 426
Fri 15/82:11 p.m.BUF - ONT
1 stop21h 58mFrontier
Sun 17/812:59 a.m.ONT - BUF
1 stop9h 17mFrontier
Deal found 13/8C$ 429
Fri 22/84:55 p.m.BUF - ONT
1 stop9h 55mFrontier
Sat 23/812:59 a.m.ONT - BUF
1 stop9h 23mFrontier
Deal found 12/8C$ 469
Thu 4/97:00 a.m.BUF - ONT
2 stops15h 11mDelta
Sun 14/910:00 p.m.ONT - BUF
1 stop10h 01mDelta
Deal found 13/8C$ 473
Thu 4/97:00 a.m.BUF - ONT
2 stops15h 11mDelta
Sat 13/97:05 a.m.ONT - BUF
2 stops14h 16mDelta
Deal found 13/8C$ 480
Wed 3/97:05 a.m.BUF - ONT
2 stops8h 27mUnited Airlines
Wed 10/95:10 a.m.ONT - BUF
2 stops13h 06mUnited Airlines
Deal found 13/8C$ 498
Tue 9/95:54 p.m.BUF - ONT
1 stop7h 36mUnited Airlines
Sun 14/97:00 a.m.ONT - BUF
1 stop6h 52mUnited Airlines
Deal found 14/8C$ 509

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 August 2025.
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

Sat 6/9

6:00 a.m.-10:35 a.m.

1 stop7h 35m

Ontario

Mon 15/9

10:00 p.m.-11:01 a.m.

1 stop10h 01m

C$ 409

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Thu 2/10

4:43 p.m.-10:23 p.m.

1 stop8h 40m

Ontario

Tue 7/10

10:00 p.m.-11:01 a.m.

1 stop10h 01m

C$ 409

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Fri 5/9

12:02 p.m.-7:11 p.m.

1 stop10h 09m

Ontario

Wed 10/9

11:45 a.m.-11:57 p.m.

1 stop9h 12m

C$ 409

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Thu 4/9

6:00 a.m.-10:35 a.m.

1 stop7h 35m

Ontario

Thu 11/9

7:05 a.m.-6:03 p.m.

1 stop7h 58m

C$ 409

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Wed 1/10

4:43 p.m.-10:23 p.m.

1 stop8h 40m

Ontario

Mon 6/10

10:00 p.m.-11:01 a.m.

1 stop10h 01m

C$ 409

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Wed 3/9

6:00 a.m.-10:35 a.m.

1 stop7h 35m

Ontario

Mon 15/9

10:00 p.m.-11:01 a.m.

1 stop10h 01m

C$ 409

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Fri 5/9

6:00 a.m.-10:35 a.m.

1 stop7h 35m

Ontario

Mon 15/9

10:00 p.m.-11:01 a.m.

1 stop10h 01m

C$ 409

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Fri 12/9

4:43 p.m.-10:23 p.m.

1 stop8h 40m

Ontario

Fri 19/9

11:55 a.m.-11:37 p.m.

1 stop8h 42m

C$ 409

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Thu 4/9

6:00 a.m.-10:35 a.m.

1 stop7h 35m

Ontario

Wed 10/9

11:45 a.m.-11:57 p.m.

1 stop9h 12m

C$ 409

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Wed 1/10

6:00 a.m.-10:42 a.m.

1 stop7h 42m

Ontario

Wed 8/10

11:36 a.m.-11:39 p.m.

1 stop9h 03m

C$ 409

Flights are sorted by cheapest round-trip flights first.

Deals found on 13/8

Showing 1-10 of 22 results
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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, September is the cheapest month in which you can book a flight from Buffalo to Ontario (average of C$ 290). Flying from Buffalo to Ontario in December is currently the most expensive (average of C$ 461). 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.

What is the cheapest time of day to fly from BUF to ONT?

Find hourly flight availability from Buffalo to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 14 August 2025.

A simple way to save on the total cost of your ticket is to fly from Buffalo to Ontario at noon. If you’re flexible enough to do this you can expect to save up to 27% on your trip compared to booking a flight in the morning.

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 August 2025.
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
4,244 reviews
Check prices

Crew

8.6

Entertainment

7.5

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

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
4,244 reviews
Southwest
8.0
Very good
4,244 reviews
Check prices

Crew

8.6

Entertainment

7.5

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

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.

  • 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$ 512. Southwest is 21% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Buffalo to Ontario one-way?

    One-way options have recently been found by users for as low as C$ 205 on Delta. Other airlines that offer cheap prices include JetBlue from C$ 215 and United Airlines from C$ 243 one-way.

  • 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, September is the cheapest month in which you can book a flight from Buffalo to Ontario (average of C$ 290). Flying from Buffalo to Ontario in December is currently the most expensive (average of C$ 461). 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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Alternative routes for Buffalo to Ontario

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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 August 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapestC$ 512AverageC$ 622FlexibilityNo 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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