$163+ Cheap flights from Ontario to Buffalo (ONT - BUF)
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 12/8. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BUF
Dec 5 — Dec 121
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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
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 Ontario to Buffalo
Cheapest
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 November 5, 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 November 5, 2026.
This American Airlines deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/110:37 am -
1 stop9h 16m
Sat 12/57:00 am -
1 stop8h 12m
Deal found 11/1![American Airlines logo]()
$377
This Delta deal was found by Cheapflights users on 11/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/75:04 pm -
2 stops15h 01m
Fri 12/116:00 am -
1 stop8h 07m
Deal found 11/4![Delta logo]()
$382
This United Airlines deal was found by Cheapflights users on 10/31. 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 12/71:40 pm -
1 stop6h 17m
Thu 12/178:15 am -
1 stop7h 27m
Deal found 10/31![United Airlines logo]()
$396
This Delta deal was found by Cheapflights users on 11/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/1212:20 pm -
1 stop8h 44m
Thu 1/76:05 am -
1 stop8h 50m
Deal found 11/4![Delta logo]()
$408
This Delta deal was found by Cheapflights users on 11/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1111:08 pm -
2 stops9h 16m
Wed 12/166:00 am -
1 stop8h 07m
Deal found 11/4![Delta logo]()
$413
This American Airlines deal was found by Cheapflights users on 10/31. 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.
Mon 12/79:35 am -
2 stops10h 36m
Thu 12/176:04 am -
2 stops10h 27m
Deal found 10/31![American Airlines logo]()
$428
This Delta deal was found by Cheapflights users on 11/1. 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 12/112:20 pm -
1 stop8h 44m
Tue 12/86:00 am -
1 stop8h 07m
Deal found 11/1![Delta logo]()
$438
This Southwest deal was found by Cheapflights users on 11/4. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/78:40 am -
2 stops9h 10m
Fri 12/114:00 pm -
2 stops10h 00m
Deal found 11/4![Southwest logo]()
$442
This United Airlines deal was found by Cheapflights users on 10/31. 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 12/2811:52 pm -
1 stop6h 51m
Tue 1/510:15 am -
2 stops13h 45m
Deal found 10/31![United Airlines logo]()
$447
This American Airlines deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/179:35 am -
2 stops10h 31m
Fri 12/183:41 pm -
2 stops11h 27m
Deal found 11/2![American Airlines logo]()
$454
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 November 5, 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 November 5, 2026.
This Delta deal was found by Cheapflights users on 11/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/711:08 pm -
1 stop8h 57m
Fri 12/116:00 am -
1 stop8h 07m
Deal found 11/4![Delta logo]()
$377
This United Airlines deal was found by Cheapflights users on 10/31. 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 12/76:40 pm -
2 stops12h 04m
Thu 12/178:15 am -
1 stop7h 27m
Deal found 10/31![United Airlines logo]()
$382
This American Airlines deal was found by Cheapflights users on 10/31. 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 4/279:24 am -
2 stops9h 12m
Wed 5/51:45 pm -
2 stops11h 14m
Deal found 10/31![American Airlines logo]()
$458
This Southwest deal was found by Cheapflights users on 11/2. 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 12/1711:15 am -
2 stops9h 35m
Mon 12/214:10 pm -
1 stop7h 50m
Deal found 11/2![Southwest logo]()
$523
This Delta deal was found by Cheapflights users on 11/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/1212:20 pm -
1 stop8h 44m
Thu 1/76:05 am -
1 stop8h 50m
Deal found 11/4![Delta logo]()
$408
This Delta deal was found by Cheapflights users on 11/1. 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 12/112:20 pm -
1 stop8h 44m
Tue 12/812:06 pm -
2 stops11h 52m
Deal found 11/1![Delta logo]()
$443
This United Airlines deal was found by Cheapflights users on 11/2. 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 12/81:40 pm -
1 stop6h 17m
Wed 12/98:17 am -
1 stop7h 17m
Deal found 11/2![United Airlines logo]()
$507
This Southwest deal was found by Cheapflights users on 11/3. 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 12/289:35 pm -
2 stops9h 30m
Tue 1/57:25 am -
2 stops10h 45m
Deal found 11/3![Southwest logo]()
$547
This United Airlines deal was found by Cheapflights users on 11/4. 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.
Mon 12/141:40 pm -
1 stop6h 17m
Thu 1/78:00 am -
1 stop7h 40m
Deal found 11/4![United Airlines logo]()
$507
This United Airlines deal was found by Cheapflights users on 11/1. 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 12/165:00 am -
2 stops8h 57m
Thu 12/178:15 am -
1 stop7h 27m
Deal found 11/1![United Airlines logo]()
$512
This United Airlines deal was found by Cheapflights users on 11/1. 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 12/106:40 pm -
2 stops12h 04m
Sun 12/136:30 am -
2 stops9h 04m
Deal found 11/1![United Airlines logo]()
$552
This United Airlines deal was found by Cheapflights users on 11/2. 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 12/36:40 pm -
2 stops12h 04m
Thu 12/1010:30 am -
2 stops13h 08m
Deal found 11/2![United Airlines logo]()
$572
Last-minute flights from Ontario to BuffaloDiscover last-minute flight deals from Ontario to Buffalo. Data last updated November 5, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Buffalo. Data last updated November 5, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/110:37 am -
1 stop9h 16m
Sat 12/57:00 am -
1 stop8h 12m
Deal found 11/1![American Airlines logo]()
$377
This Delta deal was found by Cheapflights users on 11/1. 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 12/112:20 pm -
1 stop8h 44m
Tue 12/86:00 am -
1 stop8h 07m
Deal found 11/1![Delta logo]()
$438
This Delta deal was found by Cheapflights users on 11/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/75:04 pm -
2 stops15h 01m
Fri 12/116:00 am -
1 stop8h 07m
Deal found 11/4![Delta logo]()
$382
This United Airlines deal was found by Cheapflights users on 10/31. 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 12/71:40 pm -
1 stop6h 17m
Thu 12/178:15 am -
1 stop7h 27m
Deal found 10/31![United Airlines logo]()
$396
This American Airlines deal was found by Cheapflights users on 10/31. 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.
Mon 12/79:35 am -
2 stops10h 36m
Thu 12/176:04 am -
2 stops10h 27m
Deal found 10/31![American Airlines logo]()
$428
This Southwest deal was found by Cheapflights users on 11/4. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/78:40 am -
2 stops9h 10m
Fri 12/114:00 pm -
2 stops10h 00m
Deal found 11/4![Southwest logo]()
$442
This Delta deal was found by Cheapflights users on 11/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1111:08 pm -
2 stops9h 16m
Wed 12/166:00 am -
1 stop8h 07m
Deal found 11/4![Delta logo]()
$413
This Delta deal was found by Cheapflights users on 11/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/1212:20 pm -
1 stop8h 44m
Thu 1/76:05 am -
1 stop8h 50m
Deal found 11/4![Delta logo]()
$408
This American Airlines deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/179:35 am -
2 stops10h 31m
Fri 12/183:41 pm -
2 stops11h 27m
Deal found 11/2![American Airlines logo]()
$454
This United Airlines deal was found by Cheapflights users on 10/31. 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 12/2811:52 pm -
1 stop6h 51m
Tue 1/510:15 am -
2 stops13h 45m
Deal found 10/31![United Airlines logo]()
$447
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 November 5, 2026.
Search for one-way flight options from Ontario to Buffalo. Find affordable one-way fares based on user searches. Data last updated November 5, 2026.
This Mytrip deal was found by Cheapflights users on 11/4. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/811:30 am -
2 stops21h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/4![Frontier logo]()
$163
This Kiwi.com deal was found by Cheapflights users on 11/1. 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.
Tue 12/16:00 am -
2 stops27h 19m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![Frontier logo]()
$165
This Booking.com deal was found by Cheapflights users on 11/2. 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.
Tue 12/158:44 am -
2 stops24h 36m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Frontier logo]()
$178
This United Airlines deal was found by Cheapflights users on 11/1. 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 12/11:40 pm -
1 stop6h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![United Airlines logo]()
$189
This American Airlines deal was found by Cheapflights users on 11/3. 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 12/3010:10 pm -
1 stop9h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![American Airlines logo]()
$194
This American Airlines deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/179:35 am -
2 stops10h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![American Airlines logo]()
$207
This Delta deal was found by Cheapflights users on 10/31. 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 11/2412:18 pm -
1 stop8h 41m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/31![Delta logo]()
$220
This Delta deal was found by Cheapflights users on 10/31. 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.
Sun 1/317:05 am -
1 stop7h 49m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/31![Delta logo]()
$224
This United Airlines deal was found by Cheapflights users on 10/31. 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.
Sun 1/316:37 pm -
2 stops11h 51m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/31![United Airlines logo]()
$229
This Mytrip deal was found by Cheapflights users on 11/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1612:36 pm -
2 stops26h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Frontier logo]()
$234
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 November 5, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $377 (American Airlines) |
One-way from | $163 (Mytrip) |
Popular in | October |
Cheapest in | November |
Average price | $351 |
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 7,457,451 searches. Data last updated November 5, 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 Ontario - BUF Buffalo
ONTBUF
Ontario
Sun 1/31
7:05 am-5:54 pm
1 stop7h 49m
Buffalo
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$224
Quickest round-trip
OntarioBuffalo
ONT Ontario - BUF Buffalo
ONTBUF
Ontario
Wed 12/16
1:40 pm-10:57 pm
1 stop6h 17m
Buffalo
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$254
OntarioBuffalo
ONT Ontario - BUF Buffalo
ONTBUF
Ontario
Thu 1/21
5:00 am-8:51 pm
2 stops12h 51m
Buffalo
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$259
OntarioBuffalo
ONT Ontario - BUF Buffalo
ONTBUF
Ontario
Fri 12/4
6:40 pm-9:44 am
2 stops12h 04m
Buffalo
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$259
OntarioBuffalo
ONT Ontario - BUF Buffalo
ONTBUF
Ontario
Thu 11/26
6:00 am-7:04 pm
2 stops10h 04m
Buffalo
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$259
OntarioBuffalo
ONT Ontario - BUF Buffalo
ONTBUF
Ontario
Wed 12/23
11:52 pm-10:00 am
1 stop7h 08m
Buffalo
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$309
OntarioBuffalo
ONT Ontario - BUF Buffalo
ONTBUF
Ontario
Tue 12/22
11:52 pm-9:48 am
1 stop6h 56m
Buffalo
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$309
OntarioBuffalo
ONT Ontario - BUF Buffalo
ONTBUF
Ontario
Tue 1/5
9:45 am-10:59 pm
2 stops10h 14m
Buffalo
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$314
OntarioBuffalo
ONT Ontario - BUF Buffalo
ONTBUF
Ontario
Sun 2/7
7:00 am-4:51 pm
1 stop6h 51m
Buffalo
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$315
OntarioBuffalo
ONT Ontario - BUF Buffalo
ONTBUF
Ontario
Mon 12/28
11:52 pm-9:43 am
1 stop6h 51m
Buffalo
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$319
Showing 1-10 of 24 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 November.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 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.
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 November 5, 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.
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
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 locationsCheektowaga
Lockport
Amherst
Williamsville
Orchard Park
Eden
Bowmansville
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
Buffalo flight routes
Complete your trip
Flights by cabin class
Other flight options
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 November 5, 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 November 5, 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 November 5, 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 7,457,451 searches. Data last updated November 5, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$351 | Average$531 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$376 | Average$514 | FlexibilityNo cancel fee | On-time69% |