Find flights
When to book
Airlines
FAQs

Cheap flights from Buffalo to Ontario from C$ 216

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 4/2. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — ONT
2 Dec — 9 Dec1
1 adult
1 adult, Economy, 0 bags

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 2 November 2025.

Wed 17/122:05 p.m.BUF - ONT
1 stop7h 10mSouthwest
Sun 4/11:40 p.m.ONT - BUF
1 stop7h 15mSouthwest
Deal found 2/11C$ 628
Sat 6/127:00 a.m.BUF - ONT
2 stops13h 37mUnited Airlines
Tue 9/125:05 a.m.ONT - BUF
2 stops13h 10mUnited Airlines
Deal found 2/11C$ 633
Sat 13/121:50 p.m.BUF - ONT
2 stops11h 59mUnited Airlines
Mon 12/16:39 p.m.ONT - BUF
2 stops13h 10mUnited Airlines
Deal found 2/11C$ 635
Wed 31/125:35 p.m.BUF - ONT
1 stop7h 50mUnited Airlines
Thu 8/16:39 p.m.ONT - BUF
2 stops13h 10mUnited Airlines
Deal found 2/11C$ 658
Wed 26/116:25 p.m.BUF - ONT
1 stop7h 39mDelta
Sun 7/1212:12 p.m.ONT - BUF
1 stop8h 47mDelta
Deal found 1/11C$ 698
Wed 26/118:10 a.m.BUF - ONT
1 stop7h 23mUnited Airlines
Wed 3/126:41 p.m.ONT - BUF
2 stops12h 07mUnited Airlines
Deal found 2/11C$ 710
Fri 26/123:20 p.m.BUF - ONT
1 stop10h 50mSouthwest
Sat 3/15:10 a.m.ONT - BUF
1 stop8h 05mSouthwest
Deal found 2/11C$ 717
Fri 5/121:50 p.m.BUF - ONT
2 stops11h 59mUnited Airlines
Tue 9/126:00 a.m.ONT - BUF
2 stops12h 15mUnited Airlines
Deal found 2/11C$ 724
Thu 25/126:30 a.m.BUF - ONT
2 stops9h 08mUnited Airlines
Wed 31/125:05 a.m.ONT - BUF
2 stops12h 49mUnited Airlines
Deal found 1/11C$ 741
Tue 23/125:35 p.m.BUF - ONT
1 stop7h 50mUnited Airlines
Tue 6/15:05 a.m.ONT - BUF
2 stops12h 24mUnited Airlines
Deal found 1/11C$ 752
Wed 26/118:10 a.m.BUF - ONT
1 stop7h 23mUnited Airlines
Sun 7/126:41 p.m.ONT - BUF
2 stops12h 07mUnited Airlines
Deal found 2/11C$ 843

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 2 November 2025.

Round-trip from

C$ 437

One-way from

C$ 216

Popular in

December

Cheapest in

October

Average price

C$ 716
United Airlines
  • United Airlines
  • 10/2-14/2
  • 3 total stops
  • 17h 02m total
  • Buffalo to Ontario
Search Deals
Delta
  • Delta
  • 4/2
  • 1 total stop
  • 8h 54m total
  • Buffalo to Ontario
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (C$ 160 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (C$ 50 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
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 2 November 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

Tue 10/2

6:20 a.m.-10:40 a.m.

1 stop7h 20m

Ontario

Sat 14/2

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

1 stop6h 00m

C$ 481

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Tue 20/1

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

2 stops13h 13m

Ontario

Tue 27/1

6:00 a.m.-8:29 p.m.

2 stops11h 29m

C$ 584

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Sun 1/3

6:00 a.m.-11:38 a.m.

1 stop8h 38m

Ontario

Thu 5/3

10:30 p.m.-11:16 a.m.

1 stop9h 46m

C$ 612

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Sat 13/12

1:50 p.m.-10:49 p.m.

2 stops11h 59m

Ontario

Mon 12/1

6:39 p.m.-10:49 a.m.

2 stops13h 10m

C$ 635

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Wed 31/12

5:35 p.m.-10:25 p.m.

1 stop7h 50m

Ontario

Thu 8/1

6:39 p.m.-10:49 a.m.

2 stops13h 10m

C$ 658

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Wed 26/11

6:25 p.m.-11:04 p.m.

1 stop7h 39m

Ontario

Sun 7/12

12:12 p.m.-11:59 p.m.

1 stop8h 47m

C$ 698

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Wed 26/11

8:10 a.m.-12:33 p.m.

1 stop7h 23m

Ontario

Wed 3/12

6:41 p.m.-9:48 a.m.

2 stops12h 07m

C$ 710

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Fri 26/12

3:20 p.m.-11:10 p.m.

1 stop10h 50m

Ontario

Sat 3/1

5:10 a.m.-4:15 p.m.

1 stop8h 05m

C$ 717

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Tue 23/12

12:07 p.m.-10:00 a.m.

1 stop24h 53m

Ontario

Tue 6/1

1:04 p.m.-11:58 p.m.

1 stop7h 54m

C$ 724

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Fri 5/12

1:50 p.m.-10:49 p.m.

2 stops11h 59m

Ontario

Tue 9/12

6:00 a.m.-9:15 p.m.

2 stops12h 15m

C$ 724

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/11

Showing 1-10 of 24 results
1
2
3

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$ 191). Flying from Buffalo to Ontario in June is currently the most expensive (average of C$ 318). 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 2 November 2025.

A simple way to save on the total cost of your ticket is to fly from Buffalo to Ontario in the evening. If you’re flexible enough to do this you can expect to save up to 77% on your trip compared to booking a flight at noon.

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 2 November 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
4,240 reviews
Check prices

Crew

8.6

Food

7.0

Boarding

8.1

Entertainment

7.5

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
4,240 reviews
Southwest
8.0
Very good
4,240 reviews
Check prices

Crew

8.6

Food

7.0

Boarding

8.1

Entertainment

7.5

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.

  • How long is the flight from Buffalo to Ontario?

    Southwest, United Airlines, and Delta can get you from Buffalo to Ontario in just under 7h 20m. Your travel time can differ by up to 5h 53m. 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$ 520. 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, May is the cheapest month in which you can book a flight from Buffalo to Ontario (average of C$ 191). Flying from Buffalo to Ontario in June is currently the most expensive (average of C$ 318). 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 Los Angeles flights
Newark to Los Angeles flights
John F Kennedy Intl to Las Vegas flights
LaGuardia to Los Angeles flights
Newark to San Francisco flights
Syracuse to Las Vegas flights
Buffalo to Santa Ana flights
Syracuse to Los Angeles flights
Buffalo to San Diego flights
John F Kennedy Intl to San Francisco flights
Buffalo to San Francisco flights
Newark to San Diego flights
Buffalo to Reno flights
Plattsburgh to Las Vegas flights
Buffalo to Burbank flights
Buffalo to San Jose flights
Plattsburgh to Los Angeles flights
Buffalo to Fresno flights
Buffalo to Santa Barbara flights
Buffalo to Palm Springs flights
Newark to Las Vegas 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 2 November 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapestC$ 520AverageC$ 653FlexibilityNo 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.