$131+ Cheap flights from Buffalo to Ontario (BUF - ONT)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/2. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — ONT
Oct 9 — Oct 161
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Buffalo to Ontario with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Buffalo to Ontario
Cheapest
Best
Last-minute
One-way
Cheapest flights from Buffalo to OntarioExplore 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 September 9, 2026.
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 September 9, 2026.
This Frontier deal was found by Cheapflights users on 9/8. 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.
Sat 10/241:44 pm -
2 stops13h 06m
Thu 10/292:23 pm -
2 stops19h 40m
Deal found 9/8![Frontier logo]()
$359
This Delta deal was found by Cheapflights users on 9/7. 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 10/216:00 am -
1 stop8h 06m
Sat 10/3112:16 pm -
1 stop8h 43m
Deal found 9/7![Delta logo]()
$377
This American Airlines deal was found by Cheapflights users on 9/8. 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.
Sat 10/103:56 pm -
1 stop10h 03m
Sat 10/1710:10 pm -
1 stop9h 38m
Deal found 9/8![American Airlines logo]()
$378
This American Airlines deal was found by Cheapflights users on 9/8. 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.
Wed 10/73:56 pm -
1 stop10h 03m
Mon 10/1211:10 pm -
1 stop9h 55m
Deal found 9/8![American Airlines logo]()
$394
This Southwest deal was found by Cheapflights users on 9/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/174:55 pm -
1 stop8h 45m
Tue 1/56:50 am -
1 stop10h 55m
Deal found 9/8![Southwest logo]()
$399
This American Airlines deal was found by Cheapflights users on 9/5. 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.
Fri 12/253:27 pm -
1 stop10h 27m
Wed 12/3010:34 am -
1 stop9h 18m
Deal found 9/5![American Airlines logo]()
$437
Best flights from Buffalo to OntarioDiscover carefully curated flight deals from Buffalo to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 9, 2026.
Discover carefully curated flight deals from Buffalo to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 9, 2026.
This Delta deal was found by Cheapflights users on 9/7. 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 10/216:00 am -
1 stop8h 06m
Sat 10/3112:16 pm -
1 stop8h 43m
Deal found 9/7![Delta logo]()
$377
This American Airlines deal was found by Cheapflights users on 9/8. 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.
Sat 10/103:56 pm -
1 stop10h 03m
Sat 10/177:00 am -
2 stops12h 50m
Deal found 9/8![American Airlines logo]()
$383
This Southwest deal was found by Cheapflights users on 9/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/177:20 am -
2 stops9h 45m
Tue 1/58:40 am -
2 stops10h 15m
Deal found 9/8![Southwest logo]()
$423
This United Airlines deal was found by Cheapflights users on 9/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/106:30 am -
2 stops12h 03m
Wed 11/115:00 am -
2 stops14h 59m
Deal found 9/8![United Airlines logo]()
$497
This Alaska Airlines deal was found by Cheapflights users on 9/4. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/511:10 am -
2 stops11h 52m
Tue 1/127:00 am -
2 stops13h 18m
Deal found 9/4![Alaska Airlines logo]()
$599
This Delta deal was found by Cheapflights users on 9/8. 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 10/13:58 pm -
1 stop9h 26m
Wed 10/712:16 pm -
1 stop8h 43m
Deal found 9/8![Delta logo]()
$559
This United Airlines deal was found by Cheapflights users on 9/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/198:50 am -
1 stop6h 43m
Sat 11/211:29 pm -
1 stop6h 04m
Deal found 9/4![United Airlines logo]()
$597
Last-minute flights from Buffalo to OntarioDiscover last-minute flight deals from Buffalo to Ontario. Data last updated September 9, 2026 and is based on user searches.
Discover last-minute flight deals from Buffalo to Ontario. Data last updated September 9, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 9/5. 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.
Fri 10/27:15 am -
1 stop7h 32m
Sat 10/1012:43 pm -
1 stop7h 11m
Deal found 9/5![American Airlines logo]()
$450
This American Airlines deal was found by Cheapflights users on 9/6. 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.
Sat 10/34:47 pm -
1 stop8h 50m
Sat 10/1012:43 pm -
1 stop7h 11m
Deal found 9/6![American Airlines logo]()
$449
This American Airlines deal was found by Cheapflights users on 9/8. 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.
Wed 10/73:56 pm -
1 stop10h 03m
Mon 10/1211:10 pm -
1 stop9h 55m
Deal found 9/8![American Airlines logo]()
$394
This American Airlines deal was found by Cheapflights users on 9/8. 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.
Sat 10/103:56 pm -
1 stop10h 03m
Sat 10/1710:10 pm -
1 stop9h 38m
Deal found 9/8![American Airlines logo]()
$378
This Delta deal was found by Cheapflights users on 9/7. 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 10/216:00 am -
1 stop8h 06m
Sat 10/3112:16 pm -
1 stop8h 43m
Deal found 9/7![Delta logo]()
$377
This Frontier deal was found by Cheapflights users on 9/8. 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.
Sat 10/241:44 pm -
2 stops13h 06m
Thu 10/292:23 pm -
2 stops19h 40m
Deal found 9/8![Frontier logo]()
$359
One-way flights from Buffalo to OntarioSearch for one-way flight options from Buffalo to Ontario. Find affordable one-way fares based on user searches. Data last updated September 9, 2026.
Search for one-way flight options from Buffalo to Ontario. Find affordable one-way fares based on user searches. Data last updated September 9, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/21:48 pm -
2 stops23h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Frontier logo]()
$131
This Frontier deal was found by Cheapflights users on 9/8. 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.
Wed 11/42:00 pm -
2 stops12h 51m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Frontier logo]()
$147
This Frontier deal was found by Cheapflights users on 9/8. 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.
Wed 10/71:40 pm -
2 stops13h 07m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Frontier logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 9/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/231:44 pm -
2 stops29h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Frontier logo]()
$178
This American Airlines deal was found by Cheapflights users on 9/7. 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.
Wed 10/143:56 pm -
1 stop10h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![American Airlines logo]()
$213
This American Airlines deal was found by Cheapflights users on 9/6. 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 10/1312:55 pm -
1 stop9h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![American Airlines logo]()
$214
This American Airlines deal was found by Cheapflights users on 9/5. 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 10/64:48 pm -
1 stop8h 52m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![American Airlines logo]()
$215
This Delta deal was found by Cheapflights users on 9/6. 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 10/213:59 pm -
1 stop7h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Delta logo]()
$223
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 September 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $359 (Frontier) |
One-way from | $131 (Kiwi.com) |
Popular in | December |
Cheapest in | October |
Average price | $482 |
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 7,457,451 searches. Data last updated September 9, 2026.
Use the filters below to find and compare flights from Buffalo to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BuffaloOntario
BUF Buffalo - ONT Ontario
BUFONT
Buffalo
Thu 10/15
4:04 pm-9:54 pm
1 stop8h 50m
Ontario
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$225
BuffaloOntario
BUF Buffalo - ONT Ontario
BUFONT
Buffalo
Thu 12/17
4:00 pm-10:55 pm
2 stops9h 55m
Ontario
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$230
BuffaloOntario
BUF Buffalo - ONT Ontario
BUFONT
Buffalo
Wed 12/2
12:40 pm-6:15 am
2 stops20h 35m
Ontario
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$235
BuffaloOntario
BUF Buffalo - ONT Ontario
BUFONT
Buffalo
Thu 1/7
6:00 am-11:27 am
1 stop8h 27m
Ontario
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$235
BuffaloOntario
BUF Buffalo - ONT Ontario
BUFONT
Buffalo
Fri 1/8
6:00 am-11:27 am
1 stop8h 27m
Ontario
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$235
BuffaloOntario
BUF Buffalo - ONT Ontario
BUFONT
Buffalo
Fri 10/2
5:45 pm-10:49 pm
1 stop8h 04m
Ontario
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$280
Quickest round-trip
BuffaloOntario
BUF Buffalo - ONT Ontario
BUFONT
Buffalo
Wed 9/30
8:45 am-12:46 pm
1 stop7h 01m
Ontario
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$280
BuffaloOntario
BUF Buffalo - ONT Ontario
BUFONT
Buffalo
Mon 11/2
4:55 pm-10:40 pm
1 stop8h 45m
Ontario
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$285
BuffaloOntario
BUF Buffalo - ONT Ontario
BUFONT
Buffalo
Tue 9/29
10:46 am-5:41 pm
2 stops9h 55m
Ontario
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$285
BuffaloOntario
BUF Buffalo - ONT Ontario
BUFONT
Buffalo
Tue 1/5
11:10 am-8:02 pm
2 stops11h 52m
Ontario
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$300
Showing 1-10 of 18 resultsSorted by cheapest first
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 September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Buffalo-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Buffalo-Ontario flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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.
BUF-ONT
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.
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 September 9, 2026.
Get a feel of what it's like to fly with Southwest and United 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.
Crew
8.6
Comfort
8.0
Boarding
8.1
Food
7.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Crew
8.6
Comfort
8.0
Boarding
8.1
Food
7.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Crew
8.6
Comfort
8.0
Boarding
8.1
Food
7.0
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Ontario flight routes
Other flight options
Other flights from Buffalo
Popular flights
Alternative routes for Buffalo to Ontario
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Buffalo to Ontario by cabin class
Find flights from Buffalo to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Ontario
Explore flights to Ontario departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 9, 2026.
Buffalo and Ontario flights
Browse other Buffalo and Ontario flight options. Last updated on September 9, 2026.
Other flights from Buffalo
Browse through other flights departing from Buffalo. Flights are based on user searches made on Cheapflights and were last updated on September 9, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 7,457,451 searches. Data last updated September 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$306 | Average$511 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$374 | Average$614 | FlexibilityNo cancel fee | On-time69% |