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Cheap flights from Buffalo to Ontario from C$ 223

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 17/12. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — ONT
6 Dec — 13 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 6 November 2025.

Thu 27/1112:05 p.m.BUF - ONT
1 stop10h 37mDelta
Mon 1/1210:25 p.m.ONT - BUF
1 stop9h 39mDelta
Deal found 4/11C$ 599
Wed 24/125:35 p.m.BUF - ONT
1 stop7h 50mUnited Airlines
Wed 31/1211:59 p.m.ONT - BUF
2 stops11h 15mUnited Airlines
Deal found 4/11C$ 644
Wed 26/116:25 p.m.BUF - ONT
1 stop7h 39mDelta
Sun 7/1212:12 p.m.ONT - BUF
1 stop8h 47mDelta
Deal found 5/11C$ 659
Sun 21/123:10 p.m.BUF - ONT
2 stops9h 50mSouthwest
Thu 1/16:50 a.m.ONT - BUF
1 stop6h 00mSouthwest
Deal found 4/11C$ 666
Wed 10/121:50 p.m.BUF - ONT
2 stops11h 59mUnited Airlines
Tue 16/126:00 a.m.ONT - BUF
2 stops12h 15mUnited Airlines
Deal found 5/11C$ 687
Mon 22/125:45 a.m.BUF - ONT
1 stop14h 00mSouthwest
Sat 27/125:00 a.m.ONT - BUF
1 stop6h 15mSouthwest
Deal found 3/11C$ 695
Mon 8/126:15 a.m.BUF - ONT
1 stop7h 20mSouthwest
Thu 11/1212:45 p.m.ONT - BUF
1 stop6h 55mSouthwest
Deal found 4/11C$ 759

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 6 November 2025.

Round-trip from

C$ 599

One-way from

C$ 223

Popular in

December

Cheapest in

October

Average price

C$ 721
Delta
  • Delta
  • 27/11-1/12
  • 2 total stops
  • 20h 16m total
  • Buffalo to Ontario
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American Airlines
  • American Airlines
  • 17/12
  • 2 total stops
  • 11h 35m total
  • Buffalo to Ontario
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (C$ 162 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (C$ 51 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
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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 6 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

Thu 27/11

12:05 p.m.-7:42 p.m.

1 stop10h 37m

Ontario

Mon 1/12

10:25 p.m.-11:04 a.m.

1 stop9h 39m

C$ 599

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Thu 26/2

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

1 stop7h 18m

Ontario

Tue 3/3

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

1 stop6h 14m

C$ 625

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Tue 17/2

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

1 stop7h 18m

Ontario

Wed 25/2

5:00 a.m.-9:01 p.m.

2 stops13h 01m

C$ 631

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Thu 19/2

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

1 stop7h 18m

Ontario

Mon 23/2

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

1 stop6h 14m

C$ 656

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Fri 20/2

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

1 stop7h 18m

Ontario

Mon 23/2

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

1 stop6h 14m

C$ 656

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Sun 21/12

3:10 p.m.-10:00 p.m.

2 stops9h 50m

Ontario

Thu 1/1

6:50 a.m.-3:50 p.m.

1 stop6h 00m

C$ 666

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Wed 10/12

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

2 stops11h 59m

Ontario

Tue 16/12

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

2 stops12h 15m

C$ 687

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Sun 22/3

8:30 a.m.-12:43 p.m.

1 stop7h 13m

Ontario

Tue 24/3

5:40 a.m.-8:28 p.m.

2 stops11h 48m

C$ 723

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Tue 24/2

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

1 stop7h 18m

C$ 288

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Wed 25/2

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

1 stop7h 18m

C$ 288

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/11

Showing 1-10 of 17 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, May is the cheapest month in which you can book a flight from Buffalo to Ontario (average of C$ 192). Flying from Buffalo to Ontario in June is currently the most expensive (average of C$ 320). 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 6 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 6 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

Comfort

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Boarding

8.1

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

Comfort

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Boarding

8.1

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 and United Airlines can get you from Buffalo to Ontario in just under 7h 18m. Your travel time can differ by up to 3h 19m. 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$ 524. 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$ 192). Flying from Buffalo to Ontario in June is currently the most expensive (average of C$ 320). 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 6 November 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapestC$ 524AverageC$ 658FlexibilityNo 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.

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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