Find flights
When to book
Airlines
FAQs

Cheap flights from Buffalo to Ontario from C$ 204

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 23/10. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — ONT
17 Oct — 24 Oct1
1 adult
1 adult, Economy

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 17 September 2025.

Round-trip from

C$ 395

One-way from

C$ 204

Popular in

December

Cheapest in

October

Average price

C$ 510
Frontier
  • Frontier
  • 10/10-17/10
  • 2 total stops
  • 16h 02m total
  • Buffalo to Ontario
Search Deals
JetBlue
  • JetBlue
  • 23/10
  • 1 total stop
  • 8h 34m total
  • Buffalo to Ontario
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (C$ 184 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (C$ 53 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

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 17 September 2025.

Fri 10/105:24 p.m.BUF - ONT
1 stop9h 26mFrontier
Fri 17/106:53 a.m.ONT - BUF
1 stop6h 36mFrontier
Deal found 15/9C$ 395
Tue 21/104:35 p.m.BUF - ONT
1 stop8h 47mDelta
Tue 28/1011:36 a.m.ONT - BUF
1 stop9h 03mDelta
Deal found 15/9C$ 422
Fri 3/104:57 p.m.BUF - ONT
1 stop29h 57mFrontier
Thu 9/1010:30 a.m.ONT - BUF
1 stop26h 59mFrontier
Deal found 15/9C$ 425
Fri 24/105:24 p.m.BUF - ONT
1 stop9h 26mFrontier
Mon 27/106:53 a.m.ONT - BUF
1 stop6h 36mFrontier
Deal found 16/9C$ 426
Tue 21/104:35 p.m.BUF - ONT
1 stop8h 47mDelta
Mon 27/1010:00 p.m.ONT - BUF
1 stop10h 01mDelta
Deal found 15/9C$ 453
Thu 23/104:35 p.m.BUF - ONT
1 stop8h 47mDelta
Mon 27/1010:00 p.m.ONT - BUF
1 stop10h 01mDelta
Deal found 15/9C$ 483
Thu 23/1010:55 a.m.BUF - ONT
2 stops12h 29mUnited Airlines
Mon 27/106:38 p.m.ONT - BUF
2 stops12h 10mUnited Airlines
Deal found 15/9C$ 516
Wed 22/106:00 a.m.BUF - ONT
1 stop10h 30mSouthwest
Sat 29/115:00 a.m.ONT - BUF
1 stop6h 15mSouthwest
Deal found 15/9C$ 546
Wed 22/105:55 p.m.BUF - ONT
1 stop7h 35mUnited Airlines
Wed 29/101:33 p.m.ONT - BUF
1 stop6h 19mUnited Airlines
Deal found 15/9C$ 560
Sat 11/108:25 a.m.BUF - ONT
1 stop7h 26mUnited Airlines
Sat 18/105:05 a.m.ONT - BUF
2 stops8h 48mUnited Airlines
Deal found 14/9C$ 567
Mon 20/105:55 p.m.BUF - ONT
1 stop7h 35mUnited Airlines
Wed 29/101:33 p.m.ONT - BUF
1 stop6h 19mUnited Airlines
Deal found 16/9C$ 592

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 17 September 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

Wed 22/10

4:35 p.m.-10:22 p.m.

1 stop8h 47m

Ontario

Wed 29/10

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

1 stop9h 03m

C$ 422

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Wed 22/10

4:35 p.m.-10:22 p.m.

1 stop8h 47m

Ontario

Sat 25/10

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

1 stop9h 03m

C$ 422

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Tue 21/10

4:35 p.m.-10:22 p.m.

1 stop8h 47m

Ontario

Sat 25/10

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

1 stop9h 03m

C$ 422

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Tue 21/10

4:35 p.m.-10:22 p.m.

1 stop8h 47m

Ontario

Wed 29/10

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

1 stop9h 03m

C$ 422

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Wed 10/12

12:09 p.m.-7:35 p.m.

1 stop10h 26m

Ontario

Tue 16/12

11:45 a.m.-11:55 p.m.

1 stop9h 10m

C$ 422

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Wed 10/12

12:09 p.m.-7:35 p.m.

1 stop10h 26m

Ontario

Wed 17/12

11:45 a.m.-11:55 p.m.

1 stop9h 10m

C$ 422

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Tue 21/10

4:35 p.m.-10:22 p.m.

1 stop8h 47m

Ontario

Mon 27/10

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

1 stop10h 01m

C$ 453

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Wed 22/10

4:35 p.m.-10:22 p.m.

1 stop8h 47m

Ontario

Mon 27/10

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

1 stop10h 01m

C$ 453

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Thu 23/10

4:35 p.m.-10:22 p.m.

1 stop8h 47m

Ontario

Mon 27/10

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

1 stop10h 01m

C$ 483

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Wed 22/10

6:00 a.m.-1:30 p.m.

1 stop10h 30m

Ontario

Sat 29/11

5:00 a.m.-2:15 p.m.

1 stop6h 15m

C$ 546

Flights are sorted by cheapest round-trip flights first.

Deals found on 15/9

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, 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 17 September 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 17 September 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
4,242 reviews
Check prices

Comfort

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

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
4,242 reviews
Southwest
8.0
Very good
4,242 reviews
Check prices

Comfort

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

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.

  • How long is the flight from Buffalo to Ontario?

    Delta can get you from Buffalo to Ontario in just under 8h 47m. 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$ 511. Southwest is 21% 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, 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Buffalo to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Los Angeles flights
Buffalo to Las Vegas flights
Buffalo to San Francisco flights
LaGuardia to Los Angeles flights
Newark to Los Angeles flights
Buffalo to Los Angeles flights
John F Kennedy Intl to Las Vegas flights
Newark to San Francisco flights
Buffalo to San Jose flights
John F Kennedy Intl to San Francisco flights
Buffalo to San Diego flights
Buffalo to Santa Ana flights
Buffalo to Fresno flights
Plattsburgh to Las Vegas flights
Newark to San Diego flights
Syracuse to Los Angeles flights
Newark to Las Vegas flights
Plattsburgh to Los Angeles flights
Buffalo to Burbank flights
Syracuse to Las Vegas flights
Buffalo to Palm Springs flights
Buffalo to Santa Barbara flights

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 17 September 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapestC$ 511AverageC$ 620FlexibilityNo 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!

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.