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Ontario

$148+ 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 10/22. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — ONT
oct. 16 — oct. 231
jue. 10/16
jue. 10/23
1 adult, Economy
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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 septiembre 16, 2025.

Round-trip from

$152
(Booking.com)

One-way from

$148
(Priceline)

Popular in

December

Cheapest in

October

Average price

$371
From Buffalo to Ontario
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One-way flight from Buffalo to Ontario
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Highest demand for flights based on searches. 17% potential increase in price ($97 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($28 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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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 septiembre 16, 2025.

This Booking.com deal was found by Cheapflights users on 9/15. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/34:57 pmBUF - ONT
1 stop29h 57mFrontier
dom. 10/58:59 pmONT - BUF
1 stop16h 04mFrontier
Deal found 9/15$152
This Frontier deal was found by Cheapflights users on 9/15. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/2312:15 pmBUF - ONT
2 stops14h 35mFrontier
lun. 10/276:53 amONT - BUF
1 stop6h 36mFrontier
Deal found 9/15$222
This Booking.com deal was found by Cheapflights users on 9/14. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/224:58 pmBUF - ONT
1 stop29h 56mFrontier
sáb. 9/278:59 pmONT - BUF
1 stop16h 03mFrontier
Deal found 9/14$223
This Frontier deal was found by Cheapflights users on 9/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/167:14 pmBUF - ONT
2 stops17h 21mFrontier
dom. 10/1910:40 pmONT - BUF
2 stops14h 49mFrontier
Deal found 9/14$239
This Frontier deal was found by Cheapflights users on 9/15. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/205:24 pmBUF - ONT
1 stop9h 26mFrontier
lun. 10/276:53 amONT - BUF
1 stop6h 36mFrontier
Deal found 9/15$242
This Booking.com deal was found by Cheapflights users on 9/13. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/214:57 pmBUF - ONT
1 stop17h 56mFrontier
dom. 9/288:59 pmONT - BUF
1 stop16h 04mFrontier
Deal found 9/13$253
This Booking.com deal was found by Cheapflights users on 9/15. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/194:57 pmBUF - ONT
1 stop29h 57mFrontier
dom. 9/218:59 pmONT - BUF
1 stop16h 04mFrontier
Deal found 9/15$277
This Justfly.com deal was found by Cheapflights users on 9/15. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/105:24 pmBUF - ONT
1 stop9h 26mFrontier
vie. 10/176:53 amONT - BUF
1 stop6h 36mFrontier
Deal found 9/15$287
This Gotogate deal was found by Cheapflights users on 9/15. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 10/54:57 pmBUF - ONT
1 stop17h 56mFrontier
jue. 10/910:30 amONT - BUF
1 stop26h 59mFrontier
Deal found 9/15$289
This Frontier deal was found by Cheapflights users on 9/15. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/205:24 pmBUF - ONT
1 stop9h 26mFrontier
dom. 10/2610:40 pmONT - BUF
2 stops14h 49mFrontier
Deal found 9/15$298
This Frontier deal was found by Cheapflights users on 9/15. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/205:24 pmBUF - ONT
1 stop9h 26mFrontier
vie. 10/246:53 amONT - BUF
1 stop6h 36mFrontier
Deal found 9/15$300
This Delta deal was found by Cheapflights users on 9/15. 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.
mar. 10/214:35 pmBUF - ONT
1 stop8h 47mDelta
mar. 10/2811:36 amONT - BUF
1 stop9h 03mDelta
Deal found 9/15$307

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 septiembre 16, 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

vie. 10/3

4:57 pm-7:54 pm

1 stop29h 57m

Ontario

dom. 10/5

8:59 pm-4:03 pm

1 stop16h 04m

$152

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

jue. 10/23

12:15 pm-11:50 pm

2 stops14h 35m

Ontario

lun. 10/27

6:53 am-4:29 pm

1 stop6h 36m

$222

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

lun. 10/20

5:24 pm-11:50 pm

1 stop9h 26m

Ontario

lun. 10/27

6:53 am-4:29 pm

1 stop6h 36m

$242

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

mié. 10/22

4:35 pm-10:22 pm

1 stop8h 47m

Ontario

mié. 10/29

11:36 am-11:39 pm

1 stop9h 03m

$307

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

mié. 10/22

4:35 pm-10:22 pm

1 stop8h 47m

Ontario

sáb. 10/25

11:36 am-11:39 pm

1 stop9h 03m

$307

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

mar. 11/18

6:25 pm-11:04 pm

1 stop7h 39m

Ontario

mié. 1/7

10:30 pm-11:16 am

1 stop9h 46m

$307

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

mar. 10/21

4:35 pm-10:22 pm

1 stop8h 47m

Ontario

sáb. 10/25

11:36 am-11:39 pm

1 stop9h 03m

$307

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

mar. 10/21

4:35 pm-10:22 pm

1 stop8h 47m

Ontario

mié. 10/29

11:36 am-11:39 pm

1 stop9h 03m

$307

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

mar. 11/18

6:25 pm-11:04 pm

1 stop7h 39m

Ontario

jue. 1/8

10:30 pm-11:16 am

1 stop9h 46m

$329

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

mié. 10/22

4:35 pm-10:22 pm

1 stop8h 47m

Ontario

lun. 10/27

10:00 pm-11:01 am

1 stop10h 01m

$329

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 20 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, August is the cheapest month in which you can book a flight from Buffalo to Ontario (average of $246). Flying from Buffalo to Ontario in March is currently the most expensive (average of $327). 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 septiembre 16, 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 71% 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 septiembre 16, 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
4,242 reviews

Comfort

8.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

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
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

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
10,000 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Overall

8.0

Boarding

8.1

Entertainment

7.5

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 8h 47m. Frontier provides one of the quickest options available for as low as $307. 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 ($296), and Southwest ($366) offers the cheapest pricing from Buffalo to Ontario. You may be able to fly from Buffalo to Ontario for 37% 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, August is the cheapest month in which you can book a flight from Buffalo to Ontario (average of $246). Flying from Buffalo to Ontario in March is currently the most expensive (average of $327). 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 septiembre 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$296Average$411FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$366Average$482FlexibilityNo cancel feeOn-time63%

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