$156+ Cheap flights from Ontario to Buffalo (ONT - BUF)
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 8/18. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BUF
Aug 16 — Aug 231
Round-trip
1 adult, Economy
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Cheapest flights from Ontario to BuffaloExplore the most affordable flight options available from Ontario to Buffalo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 17, 2026.
Explore the most affordable flight options available from Ontario to Buffalo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 17, 2026.
This Southwest deal was found by Cheapflights users on 7/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2211:55 pm
ONT
- BUF
1 stop7h 55m
Southwest
Sat 8/296:45 am
BUF
- ONT
1 stop6h 35m
Southwest
Deal found 7/13![Southwest logo]()
$355
This United Airlines deal was found by Cheapflights users on 7/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/247:13 pm
ONT
- BUF
2 stops11h 15m
United Airlines
Mon 8/315:58 pm
BUF
- ONT
1 stop7h 37m
United Airlines
Deal found 7/13![United Airlines logo]()
$360
This Delta deal was found by Cheapflights users on 7/16. 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.
Mon 8/245:05 pm
ONT
- BUF
2 stops15h 03m
Delta
Mon 8/316:40 am
BUF
- ONT
2 stops13h 41m
Delta
Deal found 7/16![Delta logo]()
$366
This American Airlines deal was found by Cheapflights users on 7/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/116:00 am
ONT
- BUF
2 stops12h 31m
American Airlines
Tue 8/185:00 am
BUF
- ONT
2 stops11h 31m
American Airlines
Deal found 7/14![American Airlines logo]()
$367
This Southwest deal was found by Cheapflights users on 7/16. 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.
Mon 8/3111:55 pm
ONT
- BUF
1 stop8h 25m
Southwest
Thu 9/36:50 am
BUF
- ONT
1 stop6h 30m
Southwest
Deal found 7/16![Southwest logo]()
$368
This Southwest deal was found by Cheapflights users on 7/16. 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.
Mon 8/2411:55 pm
ONT
- BUF
1 stop8h 25m
Southwest
Mon 8/316:50 am
BUF
- ONT
1 stop6h 30m
Southwest
Deal found 7/16![Southwest logo]()
$373
This Southwest deal was found by Cheapflights users on 7/15. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2211:55 pm
ONT
- BUF
1 stop7h 55m
Southwest
Wed 8/269:45 am
BUF
- ONT
1 stop12h 10m
Southwest
Deal found 7/15![Southwest logo]()
$374
This American Airlines deal was found by Cheapflights users on 7/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/226:15 am
ONT
- BUF
2 stops12h 40m
American Airlines
Wed 8/266:00 am
BUF
- ONT
2 stops10h 31m
American Airlines
Deal found 7/15![American Airlines logo]()
$381
This JetBlue deal was found by Cheapflights users on 7/15. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/159:10 pm
ONT
- BUF
1 stop8h 14m
JetBlue
Tue 9/2212:10 pm
BUF
- ONT
1 stop11h 03m
JetBlue
Deal found 7/15![JetBlue logo]()
$383
This Delta deal was found by Cheapflights users on 7/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/812:00 pm
ONT
- BUF
1 stop8h 59m
Delta
Wed 8/126:05 am
BUF
- ONT
1 stop7h 37m
Delta
Deal found 7/13![Delta logo]()
$386
Best flights from Ontario to BuffaloDiscover carefully curated flight deals from Ontario to Buffalo that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 17, 2026.
Discover carefully curated flight deals from Ontario to Buffalo that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 17, 2026.
This Delta deal was found by Cheapflights users on 7/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/812:00 pm
ONT
- BUF
1 stop8h 59m
Delta
Wed 8/126:05 am
BUF
- ONT
1 stop7h 37m
Delta
Deal found 7/13![Delta logo]()
$386
This United Airlines deal was found by Cheapflights users on 7/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/111:18 pm
ONT
- BUF
1 stop6h 19m
United Airlines
Tue 8/186:55 am
BUF
- ONT
2 stops14h 16m
United Airlines
Deal found 7/14![United Airlines logo]()
$397
This JetBlue deal was found by Cheapflights users on 7/15. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2011:59 pm
ONT
- BUF
1 stop11h 38m
JetBlue
Tue 9/13:52 pm
BUF
- ONT
1 stop9h 45m
JetBlue
Deal found 7/15![JetBlue logo]()
$400
This Southwest deal was found by Cheapflights users on 7/17. 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.
Mon 8/2411:55 pm
ONT
- BUF
2 stops9h 35m
Southwest
Fri 8/288:35 am
BUF
- ONT
2 stops8h 25m
Southwest
Deal found 7/17![Southwest logo]()
$439
This Delta deal was found by Cheapflights users on 7/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/512:00 pm
ONT
- BUF
1 stop8h 59m
Delta
Wed 8/126:05 am
BUF
- ONT
1 stop7h 37m
Delta
Deal found 7/13![Delta logo]()
$418
This United Airlines deal was found by Cheapflights users on 7/17. 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.
Mon 8/247:13 pm
ONT
- BUF
2 stops11h 15m
United Airlines
Fri 8/288:55 am
BUF
- ONT
1 stop6h 55m
United Airlines
Deal found 7/17![United Airlines logo]()
$434
This JetBlue deal was found by Cheapflights users on 7/15. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/249:10 pm
ONT
- BUF
1 stop8h 14m
JetBlue
Wed 10/144:00 pm
BUF
- ONT
1 stop9h 09m
JetBlue
Deal found 7/15![JetBlue logo]()
$443
This United Airlines deal was found by Cheapflights users on 7/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/241:18 pm
ONT
- BUF
1 stop6h 19m
United Airlines
Mon 8/315:58 pm
BUF
- ONT
1 stop7h 37m
United Airlines
Deal found 7/13![United Airlines logo]()
$464
This United Airlines deal was found by Cheapflights users on 7/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/295:00 am
ONT
- BUF
2 stops8h 57m
United Airlines
Wed 9/26:55 am
BUF
- ONT
2 stops14h 21m
United Airlines
Deal found 7/12![United Airlines logo]()
$475
This United Airlines deal was found by Cheapflights users on 7/16. 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.
Sat 10/316:36 pm
ONT
- BUF
2 stops12h 53m
United Airlines
Wed 11/45:58 pm
BUF
- ONT
2 stops21h 03m
United Airlines
Deal found 7/16![United Airlines logo]()
$525
This United Airlines deal was found by Cheapflights users on 7/16. 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.
Sat 8/295:00 am
ONT
- BUF
2 stops13h 07m
United Airlines
Sun 9/65:58 pm
BUF
- ONT
1 stop7h 37m
United Airlines
Deal found 7/16![United Airlines logo]()
$530
Last-minute flights from Ontario to BuffaloDiscover last-minute flight deals from Ontario to Buffalo. Data last updated July 17, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Buffalo. Data last updated July 17, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 7/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/812:00 pm
ONT
- BUF
1 stop8h 59m
Delta
Wed 8/126:05 am
BUF
- ONT
1 stop7h 37m
Delta
Deal found 7/13![Delta logo]()
$386
This American Airlines deal was found by Cheapflights users on 7/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/116:00 am
ONT
- BUF
2 stops12h 31m
American Airlines
Tue 8/185:00 am
BUF
- ONT
2 stops11h 31m
American Airlines
Deal found 7/14![American Airlines logo]()
$367
This United Airlines deal was found by Cheapflights users on 7/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/111:18 pm
ONT
- BUF
1 stop6h 19m
United Airlines
Tue 8/186:55 am
BUF
- ONT
2 stops14h 16m
United Airlines
Deal found 7/14![United Airlines logo]()
$397
This Southwest deal was found by Cheapflights users on 7/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2211:55 pm
ONT
- BUF
1 stop7h 55m
Southwest
Sat 8/296:45 am
BUF
- ONT
1 stop6h 35m
Southwest
Deal found 7/13![Southwest logo]()
$355
This Southwest deal was found by Cheapflights users on 7/15. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2211:55 pm
ONT
- BUF
1 stop7h 55m
Southwest
Wed 8/269:45 am
BUF
- ONT
1 stop12h 10m
Southwest
Deal found 7/15![Southwest logo]()
$374
This American Airlines deal was found by Cheapflights users on 7/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/226:15 am
ONT
- BUF
2 stops12h 40m
American Airlines
Wed 8/266:00 am
BUF
- ONT
2 stops10h 31m
American Airlines
Deal found 7/15![American Airlines logo]()
$381
This United Airlines deal was found by Cheapflights users on 7/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/247:13 pm
ONT
- BUF
2 stops11h 15m
United Airlines
Mon 8/315:58 pm
BUF
- ONT
1 stop7h 37m
United Airlines
Deal found 7/13![United Airlines logo]()
$360
This Delta deal was found by Cheapflights users on 7/16. 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.
Mon 8/245:05 pm
ONT
- BUF
2 stops15h 03m
Delta
Mon 8/316:40 am
BUF
- ONT
2 stops13h 41m
Delta
Deal found 7/16![Delta logo]()
$366
This Southwest deal was found by Cheapflights users on 7/16. 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.
Mon 8/2411:55 pm
ONT
- BUF
1 stop8h 25m
Southwest
Mon 8/316:50 am
BUF
- ONT
1 stop6h 30m
Southwest
Deal found 7/16![Southwest logo]()
$373
This Southwest deal was found by Cheapflights users on 7/16. 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.
Mon 8/3111:55 pm
ONT
- BUF
1 stop8h 25m
Southwest
Thu 9/36:50 am
BUF
- ONT
1 stop6h 30m
Southwest
Deal found 7/16![Southwest logo]()
$368
One-way flights from Ontario to BuffaloSearch for one-way flight options from Ontario to Buffalo. Find affordable one-way fares based on user searches. Data last updated July 17, 2026.
Search for one-way flight options from Ontario to Buffalo. Find affordable one-way fares based on user searches. Data last updated July 17, 2026.
This Trip.com deal was found by Cheapflights users on 7/16. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/183:13 pm
ONT
- BUF
2 stops16h 16m
Frontier
Deal found 7/16![Frontier logo]()
$156
This Kiwi.com deal was found by Cheapflights users on 7/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/278:48 am
ONT
- BUF
2 stops22h 41m
Frontier
Deal found 7/15![Frontier logo]()
$158
This Kiwi.com deal was found by Cheapflights users on 7/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/318:48 am
ONT
- BUF
2 stops22h 41m
Frontier
Deal found 7/15![Frontier logo]()
$162
This Delta deal was found by Cheapflights users on 7/15. 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.
Thu 8/2712:00 pm
ONT
- BUF
1 stop8h 59m
Delta
Deal found 7/15![Delta logo]()
$178
This American Airlines deal was found by Cheapflights users on 7/13. 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.
Tue 10/1312:43 pm
ONT
- BUF
1 stop7h 16m
American Airlines
Deal found 7/13![American Airlines logo]()
$180
This Delta deal was found by Cheapflights users on 7/12. 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 8/117:05 am
ONT
- BUF
2 stops13h 24m
Delta
Deal found 7/12![Delta logo]()
$183
This JetBlue deal was found by Cheapflights users on 7/14. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/149:10 pm
ONT
- BUF
1 stop8h 14m
JetBlue
Deal found 7/14![JetBlue logo]()
$187
This Delta deal was found by Cheapflights users on 7/17. 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.
Mon 8/1012:00 pm
ONT
- BUF
1 stop8h 59m
Delta
Deal found 7/17![Delta logo]()
$191
This Priceline deal was found by Cheapflights users on 7/16. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/259:10 pm
ONT
- BUF
1 stop8h 14m
JetBlue
Deal found 7/16![JetBlue logo]()
$192
This Priceline deal was found by Cheapflights users on 7/15. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/811:50 pm
ONT
- BUF
1 stop11h 36m
JetBlue
Deal found 7/15![JetBlue logo]()
$197
This Delta deal was found by Cheapflights users on 7/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/512:00 pm
ONT
- BUF
1 stop8h 59m
Delta
Deal found 7/13![Delta logo]()
$210
This Kiwi.com deal was found by Cheapflights users on 7/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/309:33 am
ONT
- BUF
2 stops21h 56m
Frontier
Deal found 7/15![Frontier logo]()
$213
Find flight deals from Ontario to Buffalo
Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Buffalo (BUF). 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 July 17, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $355 (Southwest) |
One-way from | $156 (Trip.com) |
Popular in | May |
Cheapest in | September |
Average price | $536 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Buffalo 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 July 17, 2026.
Use the filters below to find and compare flights from Ontario to Buffalo that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioBuffalo
ONT - BUF
ONTBUF
Ontario
Sat 8/8
12:00 pm-11:59 pm
1 stop8h 59m
Buffalo
Wed 8/12
6:05 am-10:42 am
1 stop7h 37m
$386
OntarioBuffalo
ONT - BUF
ONTBUF
Ontario
Tue 8/11
1:18 pm-10:37 pm
1 stop6h 19m
Buffalo
Tue 8/18
6:55 am-6:11 pm
2 stops14h 16m
$397
OntarioBuffalo
ONT - BUF
ONTBUF
Ontario
Thu 8/20
11:59 pm-2:37 pm
1 stop11h 38m
Buffalo
Tue 9/1
3:52 pm-10:37 pm
1 stop9h 45m
$400
OntarioBuffalo
ONT - BUF
ONTBUF
Ontario
Wed 8/5
12:00 pm-11:59 pm
1 stop8h 59m
Buffalo
Wed 8/12
6:05 am-10:42 am
1 stop7h 37m
$418
OntarioBuffalo
ONT - BUF
ONTBUF
Ontario
Mon 8/24
7:13 pm-9:28 am
2 stops11h 15m
Buffalo
Fri 8/28
8:55 am-12:50 pm
1 stop6h 55m
$434
OntarioBuffalo
ONT - BUF
ONTBUF
Ontario
Mon 8/24
11:55 pm-12:30 pm
2 stops9h 35m
Buffalo
Fri 8/28
8:35 am-2:00 pm
2 stops8h 25m
$439
OntarioBuffalo
ONT - BUF
ONTBUF
Ontario
Thu 9/24
9:10 pm-8:24 am
1 stop8h 14m
Buffalo
Wed 10/14
4:00 pm-10:09 pm
1 stop9h 09m
$443
Quickest round-trip
OntarioBuffalo
ONT - BUF
ONTBUF
Ontario
Mon 8/24
1:18 pm-10:37 pm
1 stop6h 19m
Buffalo
Mon 8/31
5:58 pm-10:35 pm
1 stop7h 37m
$464
OntarioBuffalo
ONT - BUF
ONTBUF
Ontario
Sat 8/29
5:00 am-4:57 pm
2 stops8h 57m
Buffalo
Wed 9/2
6:55 am-6:16 pm
2 stops14h 21m
$475
OntarioBuffalo
ONT - BUF
ONTBUF
Ontario
Sat 10/31
6:36 pm-10:29 am
2 stops12h 53m
Buffalo
Wed 11/4
5:58 pm-12:01 pm
2 stops21h 03m
$525
Showing 1-10 of 20 resultsSorted by cheapest first
Compare providers for flights from Ontario to Buffalo
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 Ontario to Buffalo in July.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Ontario-Buffalo flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Buffalo flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Buffalo flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Ontario-Buffalo 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 Ontario-Buffalo 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 Ontario to Buffalo
Have a flexible travel schedule? Discover the best time to fly to Buffalo from Ontario with our price prediction graph.
ONT-BUF
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 Ontario to Buffalo
Reviews of airlines servicing Buffalo
Get insights into the airlines that provide service to Buffalo. 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 Buffalo. Reviews last updated July 17, 2026.
Read reviews from past customers who have flown Southwest and United Airlines from Ontario to Buffalo. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Overall
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Overall
8.0
Entertainment
7.5
Crew
8.6
Food
7.0
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Related info for your journey
Find useful and relevant information for your journey from Ontario to Buffalo. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Buffalo?
Book flights to Buffalo if you plan to visit one of these locationsLockport
Cheektowaga
Amherst
Williamsville
Orchard Park
Eden
Bowmansville
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Alternative routes for Ontario to Buffalo
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Other flights to Buffalo
Explore flights to Buffalo departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on July 17, 2026.
Complete your trip
Complete your trip to Buffalo by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Ontario to Buffalo by cabin class
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Ontario and Buffalo flights
Browse other Ontario and Buffalo flight options. Last updated on July 17, 2026.
Other flights from Ontario
Browse through other flights departing from Ontario. Flights are based on user searches made on Cheapflights and were last updated on July 17, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 2 airlines flying from Ontario to Buffalo
Discover the top 2 airlines that operate flights from Ontario to Buffalo. 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 July 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$286 | Average$457 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$297 | Average$473 | FlexibilityNo cancel fee | On-time69% |