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Cheap flights from Buffalo to Ontario from C$ 250

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 18/2. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — ONT
21 Jan — 28 Jan1
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 22 December 2025.

Thu 25/125:41 p.m.BUF - ONT
1 stop7h 44mUnited Airlines
Wed 31/125:05 a.m.ONT - BUF
2 stops12h 49mUnited Airlines
Deal found 20/12C$ 1,065
Thu 25/126:30 a.m.BUF - ONT
2 stops14h 21mUnited Airlines
Thu 1/15:05 a.m.ONT - BUF
2 stops8h 29mUnited Airlines
Deal found 20/12C$ 1,072
Thu 25/122:05 p.m.BUF - ONT
1 stop7h 10mSouthwest
Sun 18/16:50 a.m.ONT - BUF
1 stop6h 30mSouthwest
Deal found 21/12C$ 1,100
Fri 26/125:35 p.m.BUF - ONT
1 stop7h 50mUnited Airlines
Tue 30/125:05 a.m.ONT - BUF
2 stops12h 49mUnited Airlines
Deal found 19/12C$ 1,245
Fri 26/125:35 p.m.BUF - ONT
1 stop7h 50mUnited Airlines
Mon 29/125:05 a.m.ONT - BUF
2 stops8h 49mUnited Airlines
Deal found 21/12C$ 1,355
Thu 25/122:50 p.m.BUF - ONT
2 stops10h 35mUnited Airlines
Sun 18/15:05 a.m.ONT - BUF
3 stops29h 19mUnited Airlines
Deal found 21/12C$ 1,374
Fri 26/125:35 p.m.BUF - ONT
1 stop7h 50mUnited Airlines
Fri 2/16:39 p.m.ONT - BUF
2 stops19h 15mUnited Airlines
Deal found 19/12C$ 1,540
Wed 31/122:06 p.m.BUF - ONT
1 stop8h 44mDelta
Fri 2/16:00 a.m.ONT - BUF
2 stops8h 12mDelta
Deal found 20/12C$ 1,591
Sun 28/125:35 p.m.BUF - ONT
1 stop7h 50mUnited Airlines
Mon 5/111:59 p.m.ONT - BUF
2 stops14h 41mUnited Airlines
Deal found 21/12C$ 1,605

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 22 December 2025.

Round-trip from

C$ 424

One-way from

C$ 250

Popular in

December

Cheapest in

October

Average price

C$ 1,167
Delta
  • Delta
  • 21/2-24/2
  • 2 total stops
  • 19h 37m total
  • Buffalo to Ontario
Search Deals
United Airlines
  • United Airlines
  • 18/2
  • 1 total stop
  • 7h 18m total
  • Buffalo to Ontario
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (C$ 163 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease (C$ 67 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 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 22 December 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 21/2

2:08 p.m.-9:05 p.m.

1 stop9h 57m

Ontario

Tue 24/2

10:20 p.m.-11:00 a.m.

1 stop9h 40m

C$ 424

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Thu 28/5

4:00 p.m.-10:09 p.m.

1 stop9h 09m

Ontario

Mon 1/6

11:25 p.m.-11:29 a.m.

1 stop9h 04m

C$ 505

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Wed 14/1

1:59 p.m.-10:53 p.m.

2 stops11h 54m

Ontario

Sat 17/1

5:05 a.m.-8:29 p.m.

2 stops12h 24m

C$ 544

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Mon 6/4

2:59 p.m.-9:04 p.m.

2 stops33h 05m

Ontario

Tue 14/4

10:15 p.m.-11:01 a.m.

1 stop9h 46m

C$ 559

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Tue 7/4

6:02 a.m.-9:04 p.m.

2 stops18h 02m

Ontario

Mon 13/4

10:15 p.m.-11:31 p.m.

2 stops22h 16m

C$ 559

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Wed 18/2

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

1 stop7h 18m

Ontario

Wed 11/3

1:50 p.m.-11:10 p.m.

1 stop6h 20m

C$ 564

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Mon 6/4

2:59 p.m.-9:04 p.m.

2 stops33h 05m

Ontario

Wed 15/4

12:39 p.m.-11:03 a.m.

2 stops19h 24m

C$ 564

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Wed 8/4

11:37 a.m.-9:04 p.m.

2 stops12h 27m

Ontario

Wed 15/4

12:39 p.m.-11:03 a.m.

2 stops19h 24m

C$ 573

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Mon 6/4

2:59 p.m.-9:04 p.m.

2 stops33h 05m

Ontario

Mon 13/4

10:15 p.m.-11:01 a.m.

1 stop9h 46m

C$ 600

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Sun 5/4

6:15 a.m.-12:23 p.m.

2 stops9h 08m

Ontario

Wed 15/4

12:39 p.m.-11:03 a.m.

2 stops19h 24m

C$ 614

Flights are sorted by cheapest round-trip flights first.

Deals found on 22/12

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, May 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$ 313). 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 22 December 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
4,254 reviews
Check prices

Crew

8.6

Entertainment

7.5

Overall

8.0

Food

7.0

Comfort

8.0

Boarding

8.1

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
4,254 reviews
Southwest
8.0
Very good
4,254 reviews
Check prices

Crew

8.6

Entertainment

7.5

Overall

8.0

Food

7.0

Comfort

8.0

Boarding

8.1

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, JetBlue, and United Airlines can get you from Buffalo to Ontario in just under 9h 09m. Your travel time can differ by up to 2h 45m. 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$ 512. Southwest is 20% 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$ 185). Flying from Buffalo to Ontario in June is currently the most expensive (average of C$ 313). 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 22 December 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapestC$ 512AverageC$ 837FlexibilityNo 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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