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$105+ Cheap flights from Buffalo to Ontario (BUF - ONT)

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 1/11. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — ONT
Dec 13 — Dec 201
Sat 12/13
Sat 12/20
1 adult, Economy
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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 November 13, 2025.

This American Airlines deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/25:23 pmBUF - ONT
1 stop8h 16mAmerican Airlines
Sat 12/610:34 pmONT - BUF
1 stop9h 29mAmerican Airlines
Deal found 11/10$307
This Delta deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2712:05 pmBUF - ONT
1 stop10h 37mDelta
Tue 12/212:12 pmONT - BUF
1 stop8h 47mDelta
Deal found 11/10$329
This Delta deal was found by Cheapflights users on 11/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/106:00 amBUF - ONT
1 stop8h 02mDelta
Wed 12/1710:25 pmONT - BUF
1 stop9h 39mDelta
Deal found 11/12$342
This Delta deal was found by Cheapflights users on 11/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/166:00 amBUF - ONT
1 stop8h 02mDelta
Sat 12/2010:29 pmONT - BUF
1 stop9h 33mDelta
Deal found 11/12$402
This American Airlines deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/276:10 amBUF - ONT
2 stops12h 14mAmerican Airlines
Mon 12/112:49 pmONT - BUF
1 stop6h 52mAmerican Airlines
Deal found 11/10$429
This American Airlines deal was found by Cheapflights users on 11/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/211:37 pmBUF - ONT
1 stop10h 29mAmerican Airlines
Sat 12/277:18 pmONT - BUF
2 stops12h 49mAmerican Airlines
Deal found 11/13$452
This Delta deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2712:05 pmBUF - ONT
1 stop10h 37mDelta
Mon 12/110:25 pmONT - BUF
1 stop9h 39mDelta
Deal found 11/10$455

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 November 13, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$307
(American Airlines)

One-way from

$105
(Trip.com)

Popular in

December

Cheapest in

October

Average price

$491
Provider with most accurate pricing for Buffalo-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Buffalo-Ontario flights.
Search Deals
From Buffalo to Ontario
Search Deals
One-way flight from Buffalo to Ontario
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($76 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($26 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 2,558,603 searches. Data last updated November 13, 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 1/14

6:00 am-11:54 am

1 stop8h 54m

Ontario

Tue 1/20

10:30 pm-11:19 am

1 stop9h 49m

$307

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Thu 11/27

12:05 pm-7:42 pm

1 stop10h 37m

Ontario

Tue 12/2

10:25 pm-12:34 pm

2 stops11h 09m

$334

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Tue 2/10

1:59 pm-10:53 pm

2 stops11h 54m

Ontario

Tue 2/17

1:45 pm-10:59 pm

1 stop6h 14m

$412

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Fri 1/9

11:51 am-9:07 pm

2 stops12h 16m

Ontario

Sun 1/11

10:30 pm-11:16 am

1 stop9h 46m

$442

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Sun 12/21

1:37 pm-9:06 pm

1 stop10h 29m

Ontario

Sat 12/27

7:18 pm-11:07 am

2 stops12h 49m

$452

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Sun 3/1

6:00 am-11:59 am

1 stop8h 59m

Ontario

Thu 3/5

1:09 pm-11:29 pm

1 stop7h 20m

$467

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Fri 3/6

5:15 pm-10:15 pm

1 stop8h 00m

Ontario

Tue 3/10

5:40 am-8:28 pm

2 stops11h 48m

$503

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Wed 11/26

6:25 pm-11:04 pm

1 stop7h 39m

Ontario

Sun 12/7

12:12 pm-11:59 pm

1 stop8h 47m

$527

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Tue 3/3

5:44 pm-11:53 pm

2 stops9h 09m

$159

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Thu 12/11

6:00 am-11:02 am

1 stop8h 02m

$193

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/10

Showing 1-10 of 19 results
1
2

Compare providers for flights from Buffalo to Ontario

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Buffalo to Ontario in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Buffalo-Ontario flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Buffalo-Ontario flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Buffalo-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Buffalo-Ontario flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Buffalo-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 $135). Flying from Buffalo to Ontario in June is currently the most expensive (average of $227). 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 November 13, 2025.

One of the essential ways to save on airfare from Buffalo to Ontario is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 70% on airfare.

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 November 13, 2025.
Get a feel of what it's like to fly with Southwest and American Airlines from Buffalo to Ontario by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,235 reviews

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Overall

8.0

Food

7.0

Crew

8.6

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
4,235 reviews
Southwest
8.0
Very good
4,235 reviews

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Overall

8.0

Food

7.0

Crew

8.6

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.
American Airlines
7.2
Good
11,050 reviews
Southwest
8.0
Very good
4,235 reviews

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Overall

8.0

Food

7.0

Crew

8.6

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?

    A quick flight from Buffalo to Ontario can take about 10h 29m. Delta provides one of the quickest options available for as low as $452. The distance between Buffalo and Ontario is about 2167 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Buffalo to Ontario round-trip?

    According to our current data, American Airlines ($286), and Southwest ($367) offers the cheapest pricing from Buffalo to Ontario. You may be able to fly from Buffalo to Ontario for 39% less than the average price by searching for these airlines.

  • 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 $135). Flying from Buffalo to Ontario in June is currently the most expensive (average of $227). 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 2 airlines flying from Buffalo to Ontario

Discover the top 2 airlines 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 2,558,603 searches. Data last updated November 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$286Average$366FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$367Average$476FlexibilityNo cancel feeOn-time63%

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