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Cheap flights from Buffalo to Ontario from C$ 184

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
5 Feb — 12 Feb1
1 adult
1 adult, Economy, 0 bags

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 January 2026.

Round-trip from

C$ 409

One-way from

C$ 184

Popular in

December

Cheapest in

October

Average price

C$ 562
Delta
  • Delta
  • 5/2-9/2
  • 2 total stops
  • 18h 20m total
  • Buffalo to Ontario
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Southwest
  • Southwest
  • 4/2
  • 1 total stop
  • 7h 20m total
  • Buffalo to Ontario
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (C$ 51 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease (C$ 33 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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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 January 2026.

Thu 5/26:00 a.m.BUF - ONT
1 stop8h 31mDelta
Mon 9/210:30 p.m.ONT - BUF
1 stop9h 49mDelta
Deal found 5/1C$ 409
Tue 31/36:50 a.m.BUF - ONT
1 stop12h 40mSouthwest
Tue 7/410:55 a.m.ONT - BUF
1 stop8h 55mSouthwest
Deal found 5/1C$ 412
Mon 2/311:51 a.m.BUF - ONT
2 stops12h 14mDelta
Wed 11/312:50 p.m.ONT - BUF
1 stop7h 56mDelta
Deal found 6/1C$ 416
Mon 2/311:51 a.m.BUF - ONT
2 stops12h 14mDelta
Mon 9/310:25 p.m.ONT - BUF
2 stops12h 54mDelta
Deal found 6/1C$ 424
Tue 3/36:00 a.m.BUF - ONT
1 stop9h 02mDelta
Wed 11/312:50 p.m.ONT - BUF
1 stop7h 56mDelta
Deal found 6/1C$ 493
Thu 5/36:01 a.m.BUF - ONT
2 stops18h 04mDelta
Wed 11/312:50 p.m.ONT - BUF
1 stop7h 56mDelta
Deal found 6/1C$ 497
Thu 5/36:01 a.m.BUF - ONT
2 stops18h 04mDelta
Tue 10/310:25 p.m.ONT - BUF
2 stops12h 54mDelta
Deal found 6/1C$ 505
Thu 29/16:00 a.m.BUF - ONT
1 stop8h 31mDelta
Thu 29/110:30 p.m.ONT - BUF
1 stop9h 38mDelta
Deal found 5/1C$ 507
Mon 2/310:32 a.m.BUF - ONT
2 stops13h 33mDelta
Thu 12/310:25 p.m.ONT - BUF
1 stop9h 36mDelta
Deal found 6/1C$ 512
Sat 31/112:25 p.m.BUF - ONT
2 stops11h 40mDelta
Fri 6/212:41 p.m.ONT - BUF
1 stop7h 47mDelta
Deal found 5/1C$ 519

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 January 2026.
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 4/3

10:32 a.m.-9:05 p.m.

2 stops13h 33m

Ontario

Wed 11/3

12:50 p.m.-11:46 p.m.

1 stop7h 56m

C$ 416

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Tue 3/3

10:32 a.m.-9:05 p.m.

2 stops13h 33m

Ontario

Wed 11/3

12:50 p.m.-11:46 p.m.

1 stop7h 56m

C$ 416

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Mon 2/3

10:32 a.m.-9:05 p.m.

2 stops13h 33m

Ontario

Tue 10/3

10:25 p.m.-2:19 p.m.

2 stops12h 54m

C$ 424

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Thu 5/3

6:01 a.m.-9:05 p.m.

2 stops18h 04m

Ontario

Tue 10/3

10:25 p.m.-2:19 p.m.

2 stops12h 54m

C$ 505

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Wed 4/3

10:32 a.m.-9:05 p.m.

2 stops13h 33m

Ontario

Fri 13/3

12:50 p.m.-11:46 p.m.

1 stop7h 56m

C$ 512

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Thu 29/1

6:00 a.m.-11:31 a.m.

1 stop8h 31m

Ontario

Thu 29/1

10:30 p.m.-11:45 a.m.

2 stops10h 15m

C$ 513

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Tue 17/3

6:00 a.m.-11:40 a.m.

1 stop8h 40m

Ontario

Wed 25/3

10:25 p.m.-11:01 a.m.

1 stop9h 36m

C$ 519

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Mon 16/3

3:56 p.m.-11:40 a.m.

2 stops22h 44m

Ontario

Tue 24/3

10:25 p.m.-11:01 a.m.

1 stop9h 36m

C$ 523

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Mon 16/3

7:56 p.m.-11:40 a.m.

2 stops18h 44m

Ontario

Wed 25/3

10:25 p.m.-11:01 a.m.

1 stop9h 36m

C$ 523

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Wed 18/2

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

1 stop7h 18m

Ontario

Wed 25/2

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

1 stop6h 14m

C$ 529

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/1

Showing 1-10 of 24 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$ 183). Flying from Buffalo to Ontario in June is currently the most expensive (average of C$ 312). 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 6 January 2026.
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
4,248 reviews
Check prices

Comfort

8.0

Food

7.0

Overall

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

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
4,248 reviews
Southwest
8.0
Very good
4,248 reviews
Check prices

Comfort

8.0

Food

7.0

Overall

8.0

Boarding

8.1

Crew

8.6

Entertainment

7.5

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 12h 13m. 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 19% 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$ 183). Flying from Buffalo to Ontario in June is currently the most expensive (average of C$ 312). 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.

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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 January 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapestC$ 511AverageC$ 835FlexibilityNo 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?

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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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