$149+ 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 9/22. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BUF
Jul 11 — Jul 181
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Buffalo 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
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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 Ontario to Buffalo
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Best
Last-minute
One-way
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 June 11, 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 June 11, 2026.
This Super.com deal was found by Cheapflights users on 6/10. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/911:50 pm
ONT
- BUF
1 stop11h 46m
JetBlue
Fri 8/143:32 pm
BUF
- ONT
1 stop10h 03m
JetBlue
Deal found 6/10![JetBlue logo]()
$295
This Delta deal was found by Cheapflights users on 6/10. 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.
Tue 11/1710:59 pm
ONT
- BUF
1 stop9h 16m
Delta
Tue 12/812:09 pm
BUF
- ONT
1 stop9h 09m
Delta
Deal found 6/10![Delta logo]()
$297
This Delta deal was found by Cheapflights users on 6/10. 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.
Tue 11/1710:59 pm
ONT
- BUF
1 stop9h 16m
Delta
Wed 12/99:55 am
BUF
- ONT
2 stops11h 23m
Delta
Deal found 6/10![Delta logo]()
$302
This Delta deal was found by Cheapflights users on 6/9. 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 8/1710:00 pm
ONT
- BUF
1 stop10h 08m
Delta
Tue 8/256:05 am
BUF
- ONT
1 stop7h 37m
Delta
Deal found 6/9![Delta logo]()
$311
This Delta deal was found by Cheapflights users on 6/10. 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.
Mon 11/1610:59 pm
ONT
- BUF
2 stops10h 34m
Delta
Tue 12/84:59 pm
BUF
- ONT
1 stop8h 15m
Delta
Deal found 6/10![Delta logo]()
$316
This Priceline deal was found by Cheapflights users on 6/8. 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 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
Tue 9/2212:10 pm
BUF
- ONT
1 stop11h 03m
JetBlue
Deal found 6/8![JetBlue logo]()
$319
This Delta deal was found by Cheapflights users on 6/9. 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 8/1710:00 pm
ONT
- BUF
1 stop10h 08m
Delta
Thu 8/276:05 am
BUF
- ONT
1 stop7h 37m
Delta
Deal found 6/9![Delta logo]()
$325
This Delta deal was found by Cheapflights users on 6/10. 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.
Mon 11/1610:59 pm
ONT
- BUF
2 stops10h 34m
Delta
Thu 12/1012:09 pm
BUF
- ONT
1 stop9h 09m
Delta
Deal found 6/10![Delta logo]()
$330
This Delta deal was found by Cheapflights users on 6/10. 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.
Tue 11/1710:59 pm
ONT
- BUF
1 stop9h 16m
Delta
Mon 12/74:59 pm
BUF
- ONT
1 stop8h 15m
Delta
Deal found 6/10![Delta logo]()
$333
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 June 11, 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 June 11, 2026.
This JetBlue deal was found by Cheapflights users on 6/9. 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
Wed 9/1612:10 pm
BUF
- ONT
1 stop11h 03m
JetBlue
Deal found 6/9![JetBlue logo]()
$373
This Delta deal was found by Cheapflights users on 6/10. 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.
Tue 12/810:59 pm
ONT
- BUF
1 stop9h 16m
Delta
Tue 12/224:59 pm
BUF
- ONT
1 stop8h 15m
Delta
Deal found 6/10![Delta logo]()
$417
This Southwest deal was found by Cheapflights users on 6/8. 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.
Sat 7/49:40 pm
ONT
- BUF
1 stop7h 15m
Southwest
Tue 7/712:50 pm
BUF
- ONT
2 stops9h 10m
Southwest
Deal found 6/8![Southwest logo]()
$469
This United Airlines deal was found by Cheapflights users on 6/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/217:13 pm
ONT
- BUF
2 stops11h 15m
United Airlines
Tue 8/256:55 am
BUF
- ONT
2 stops14h 16m
United Airlines
Deal found 6/10![United Airlines logo]()
$555
This JetBlue deal was found by Cheapflights users on 6/6. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/3011:50 pm
ONT
- BUF
1 stop11h 46m
JetBlue
Tue 9/2212:10 pm
BUF
- ONT
1 stop11h 03m
JetBlue
Deal found 6/6![JetBlue logo]()
$400
This Delta deal was found by Cheapflights users on 6/10. 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.
Tue 12/810:59 pm
ONT
- BUF
1 stop9h 16m
Delta
Wed 12/2312:09 pm
BUF
- ONT
1 stop9h 09m
Delta
Deal found 6/10![Delta logo]()
$417
This Southwest deal was found by Cheapflights users on 6/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/1011:55 pm
ONT
- BUF
1 stop7h 25m
Southwest
Mon 7/202:50 pm
BUF
- ONT
1 stop10h 35m
Southwest
Deal found 6/10![Southwest logo]()
$482
This JetBlue deal was found by Cheapflights users on 6/9. 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.
Fri 9/119:10 pm
ONT
- BUF
1 stop8h 14m
JetBlue
Sat 9/1912:10 pm
BUF
- ONT
1 stop11h 03m
JetBlue
Deal found 6/9![JetBlue logo]()
$443
This Delta deal was found by Cheapflights users on 6/9. 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.
Fri 8/2110:00 pm
ONT
- BUF
1 stop10h 08m
Delta
Fri 8/284:13 pm
BUF
- ONT
1 stop8h 39m
Delta
Deal found 6/9![Delta logo]()
$497
This Southwest deal was found by Cheapflights users on 6/7. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/1211:55 pm
ONT
- BUF
2 stops9h 10m
Southwest
Mon 7/204:10 pm
BUF
- ONT
2 stops9h 30m
Southwest
Deal found 6/7![Southwest logo]()
$517
This JetBlue deal was found by Cheapflights users on 6/7. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/299:10 pm
ONT
- BUF
1 stop8h 14m
JetBlue
Sun 10/412:10 pm
BUF
- ONT
1 stop11h 03m
JetBlue
Deal found 6/7![JetBlue logo]()
$486
This Southwest deal was found by Cheapflights users on 6/6. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/1511:55 pm
ONT
- BUF
2 stops9h 10m
Southwest
Fri 7/174:10 pm
BUF
- ONT
2 stops9h 05m
Southwest
Deal found 6/6![Southwest logo]()
$517
Last-minute flights from Ontario to BuffaloDiscover last-minute flight deals from Ontario to Buffalo. Data last updated June 11, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Buffalo. Data last updated June 11, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 6/7. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/49:40 am
ONT
- BUF
1 stop8h 30m
Southwest
Fri 7/105:55 pm
BUF
- ONT
1 stop7h 30m
Southwest
Deal found 6/7![Southwest logo]()
$434
This American Airlines deal was found by Cheapflights users on 6/7. 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.
Sat 7/46:11 am
ONT
- BUF
2 stops13h 36m
American Airlines
Fri 7/107:01 am
BUF
- ONT
1 stop9h 21m
American Airlines
Deal found 6/7![American Airlines logo]()
$444
This American Airlines deal was found by Cheapflights users on 6/8. 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.
Tue 7/712:35 pm
ONT
- BUF
1 stop7h 15m
American Airlines
Wed 7/297:01 am
BUF
- ONT
1 stop9h 21m
American Airlines
Deal found 6/8![American Airlines logo]()
$391
This Southwest deal was found by Cheapflights users on 6/6. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/711:55 pm
ONT
- BUF
1 stop7h 30m
Southwest
Wed 7/296:00 am
BUF
- ONT
1 stop9h 05m
Southwest
Deal found 6/6![Southwest logo]()
$417
This Southwest deal was found by Cheapflights users on 6/9. 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 7/116:00 am
ONT
- BUF
1 stop8h 10m
Southwest
Wed 7/1512:50 pm
BUF
- ONT
2 stops9h 10m
Southwest
Deal found 6/9![Southwest logo]()
$439
This JetBlue deal was found by Cheapflights users on 6/10. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/1911:58 pm
ONT
- BUF
1 stop11h 39m
JetBlue
Fri 7/243:32 pm
BUF
- ONT
1 stop10h 04m
JetBlue
Deal found 6/10![JetBlue logo]()
$443
This CheapOair deal was found by Cheapflights users on 6/9. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/2711:51 pm
ONT
- BUF
1 stop15h 35m
JetBlue
Tue 8/43:55 pm
BUF
- ONT
1 stop9h 40m
JetBlue
Deal found 6/9![JetBlue logo]()
$436
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 June 11, 2026.
Search for one-way flight options from Ontario to Buffalo. Find affordable one-way fares based on user searches. Data last updated June 11, 2026.
This Delta deal was found by Cheapflights users on 6/10. 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.
Tue 9/227:05 am
ONT
- BUF
1 stop7h 49m
Delta
Deal found 6/10![Delta logo]()
$149
This Delta deal was found by Cheapflights users on 6/10. 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.
Mon 8/2410:00 pm
ONT
- BUF
1 stop10h 08m
Delta
Deal found 6/10![Delta logo]()
$163
This JetBlue deal was found by Cheapflights users on 6/6. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/2611:58 pm
ONT
- BUF
1 stop11h 39m
JetBlue
Deal found 6/6![JetBlue logo]()
$169
This KAYAK deal was found by Cheapflights users on 6/9. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1710:00 pm
ONT
- BUF
1 stop10h 08m
Delta
Deal found 6/9![Delta logo]()
$195
This Delta deal was found by Cheapflights users on 6/9. 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 7/411:50 am
ONT
- BUF
1 stop8h 54m
Delta
Deal found 6/9![Delta logo]()
$196
This American Airlines deal was found by Cheapflights users on 6/8. 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 7/157:15 pm
ONT
- BUF
2 stops12h 01m
American Airlines
Deal found 6/8![American Airlines logo]()
$201
This Kiwi.com deal was found by Cheapflights users on 6/8. 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.
Wed 7/158:17 am
ONT
- BUF
2 stops23h 12m
Frontier
Deal found 6/8![Frontier logo]()
$203
This Delta deal was found by Cheapflights users on 6/6. 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.
Mon 7/2710:00 pm
ONT
- BUF
2 stops23h 46m
Delta
Deal found 6/6![Delta logo]()
$204
This Kiwi.com deal was found by Cheapflights users on 6/6. 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 7/313:40 pm
ONT
- BUF
3 stops39h 49m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$208
This United Airlines deal was found by Cheapflights users on 6/6. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/291:18 pm
ONT
- BUF
1 stop6h 40m
United Airlines
Deal found 6/6![United Airlines logo]()
$209
This Kiwi.com deal was found by Cheapflights users on 6/6. 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.
Sat 8/19:32 am
ONT
- BUF
2 stops21h 57m
Frontier
Deal found 6/6![Frontier logo]()
$212
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 June 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $295 (Super.com) |
One-way from | $149 (Delta) |
Popular in | July |
Cheapest in | September |
Average price | $446 |
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 June 11, 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
Mon 9/14
9:10 pm-8:24 am
1 stop8h 14m
Buffalo
Wed 9/16
12:10 pm-8:13 pm
1 stop11h 03m
$373
OntarioBuffalo
ONT - BUF
ONTBUF
Ontario
Sun 8/30
11:50 pm-2:36 pm
1 stop11h 46m
Buffalo
Tue 9/22
12:10 pm-8:13 pm
1 stop11h 03m
$400
OntarioBuffalo
ONT - BUF
ONTBUF
Ontario
Tue 12/8
10:59 pm-11:15 am
1 stop9h 16m
Buffalo
Tue 12/22
4:59 pm-10:14 pm
1 stop8h 15m
$417
OntarioBuffalo
ONT - BUF
ONTBUF
Ontario
Tue 12/8
10:59 pm-11:15 am
1 stop9h 16m
Buffalo
Wed 12/23
12:09 pm-6:18 pm
1 stop9h 09m
$417
OntarioBuffalo
ONT - BUF
ONTBUF
Ontario
Fri 9/11
9:10 pm-8:24 am
1 stop8h 14m
Buffalo
Sat 9/19
12:10 pm-8:13 pm
1 stop11h 03m
$443
Quickest round-trip
OntarioBuffalo
ONT - BUF
ONTBUF
Ontario
Sat 7/4
9:40 pm-7:55 am
1 stop7h 15m
Buffalo
Tue 7/7
12:50 pm-7:00 pm
2 stops9h 10m
$469
OntarioBuffalo
ONT - BUF
ONTBUF
Ontario
Fri 7/10
11:55 pm-10:20 am
1 stop7h 25m
Buffalo
Mon 7/20
2:50 pm-10:25 pm
1 stop10h 35m
$482
OntarioBuffalo
ONT - BUF
ONTBUF
Ontario
Tue 9/29
9:10 pm-8:24 am
1 stop8h 14m
Buffalo
Sun 10/4
12:10 pm-8:13 pm
1 stop11h 03m
$486
OntarioBuffalo
ONT - BUF
ONTBUF
Ontario
Fri 8/21
10:00 pm-11:08 am
1 stop10h 08m
Buffalo
Fri 8/28
4:13 pm-9:52 pm
1 stop8h 39m
$497
OntarioBuffalo
ONT - BUF
ONTBUF
Ontario
Sun 7/12
11:55 pm-12:05 pm
2 stops9h 10m
Buffalo
Mon 7/20
4:10 pm-10:40 pm
2 stops9h 30m
$517
Showing 1-10 of 23 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 June.
| 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 June 11, 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.
Boarding
8.1
Entertainment
7.5
Overall
7.9
Comfort
8.0
Crew
8.6
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Boarding
8.1
Entertainment
7.5
Overall
7.9
Comfort
8.0
Crew
8.6
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Boarding
8.1
Entertainment
7.5
Overall
7.9
Comfort
8.0
Crew
8.6
Food
7.0
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
Batavia
Williamsville
Orchard Park
Eden
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes
Buffalo flight routes
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Other flights from Ontario
Popular flights
Alternative routes for Ontario to Buffalo
See prices for flight routes from nearby airports that may be better suited for you.
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 June 11, 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
Find flights from Ontario to Buffalo, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ontario and Buffalo flights
Browse other Ontario and Buffalo flight options. Last updated on June 11, 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 June 11, 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 June 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$286 | Average$446 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$346 | Average$456 | FlexibilityNo cancel fee | On-time69% |