$100+ 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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BUF
May 10 — May 171
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
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
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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 April 10, 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 April 10, 2026.
This Southwest deal was found by Cheapflights users on 4/7. 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 5/211:55 pm
ONT
- BUF
1 stop7h 30m
Southwest
Sat 5/96:30 am
BUF
- ONT
1 stop7h 35m
Southwest
Deal found 4/7![Southwest logo]()
$367
This United Airlines deal was found by Cheapflights users on 4/6. 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.
Mon 5/256:30 am
ONT
- BUF
1 stop7h 16m
United Airlines
Wed 6/35:52 pm
BUF
- ONT
1 stop7h 54m
United Airlines
Deal found 4/6![United Airlines logo]()
$403
This eDestinos deal was found by Cheapflights users on 4/10. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/166:00 am
ONT
- BUF
2 stops28h 55m
Frontier
Mon 7/132:50 pm
BUF
- ONT
2 stops30h 02m
Frontier
Deal found 4/10![Frontier logo]()
$420
This American Airlines deal was found by Cheapflights users on 4/6. 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.
Mon 5/2510:22 am
ONT
- BUF
1 stop9h 14m
American Airlines
Wed 6/36:02 am
BUF
- ONT
2 stops10h 26m
American Airlines
Deal found 4/6![American Airlines logo]()
$423
This Delta deal was found by Cheapflights users on 4/8. 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.
Sun 5/2410:00 pm
ONT
- BUF
1 stop10h 13m
Delta
Sat 5/306:15 am
BUF
- ONT
1 stop7h 42m
Delta
Deal found 4/8![Delta logo]()
$428
This Southwest deal was found by Cheapflights users on 4/6. 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.
Thu 5/289:55 pm
ONT
- BUF
1 stop6h 55m
Southwest
Mon 6/15:15 am
BUF
- ONT
1 stop9h 05m
Southwest
Deal found 4/6![Southwest logo]()
$438
This Southwest deal was found by Cheapflights users on 4/10. 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.
Tue 6/169:40 pm
ONT
- BUF
1 stop7h 20m
Southwest
Mon 7/135:55 pm
BUF
- ONT
1 stop7h 30m
Southwest
Deal found 4/10![Southwest logo]()
$447
This Travelocity deal was found by Cheapflights users on 4/6. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/2510:00 pm
ONT
- BUF
1 stop10h 13m
Delta
Tue 6/26:15 am
BUF
- ONT
1 stop7h 42m
Delta
Deal found 4/6![Delta logo]()
$448
This Southwest deal was found by Cheapflights users on 4/7. 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.
Thu 5/149:55 pm
ONT
- BUF
1 stop6h 55m
Southwest
Wed 5/206:40 am
BUF
- ONT
1 stop7h 55m
Southwest
Deal found 4/7![Southwest logo]()
$457
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 April 10, 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 April 10, 2026.
This Southwest deal was found by Cheapflights users on 4/7. 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 5/29:55 pm
ONT
- BUF
1 stop7h 20m
Southwest
Sat 5/912:30 pm
BUF
- ONT
2 stops11h 15m
Southwest
Deal found 4/7![Southwest logo]()
$372
This United Airlines deal was found by Cheapflights users on 4/6. 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.
Mon 5/256:30 am
ONT
- BUF
1 stop7h 16m
United Airlines
Wed 6/35:52 pm
BUF
- ONT
1 stop7h 54m
United Airlines
Deal found 4/6![United Airlines logo]()
$403
This Delta deal was found by Cheapflights users on 4/9. 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.
Wed 6/1711:50 am
ONT
- BUF
1 stop9h 09m
Delta
Sat 6/206:00 am
BUF
- ONT
1 stop7h 40m
Delta
Deal found 4/9![Delta logo]()
$563
This Southwest deal was found by Cheapflights users on 4/5. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/911:55 pm
ONT
- BUF
1 stop7h 30m
Southwest
Sun 7/125:15 am
BUF
- ONT
1 stop7h 05m
Southwest
Deal found 4/5![Southwest logo]()
$477
This United Airlines deal was found by Cheapflights users on 4/8. 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 5/57:00 am
ONT
- BUF
1 stop6h 54m
United Airlines
Thu 5/77:00 am
BUF
- ONT
2 stops13h 52m
United Airlines
Deal found 4/8![United Airlines logo]()
$494
This United Airlines deal was found by Cheapflights users on 4/6. 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.
Tue 4/281:34 pm
ONT
- BUF
1 stop6h 36m
United Airlines
Thu 4/305:55 pm
BUF
- ONT
1 stop7h 40m
United Airlines
Deal found 4/6![United Airlines logo]()
$513
This United Airlines deal was found by Cheapflights users on 4/5. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/136:59 pm
ONT
- BUF
2 stops11h 42m
United Airlines
Tue 5/195:50 pm
BUF
- ONT
1 stop7h 45m
United Airlines
Deal found 4/5![United Airlines logo]()
$514
This United Airlines deal was found by Cheapflights users on 4/8. 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 8/45:00 am
ONT
- BUF
2 stops12h 41m
United Airlines
Tue 8/1110:54 am
BUF
- ONT
1 stop10h 25m
United Airlines
Deal found 4/8![United Airlines logo]()
$517
This United Airlines deal was found by Cheapflights users on 4/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/76:59 pm
ONT
- BUF
2 stops11h 41m
United Airlines
Sun 5/105:55 pm
BUF
- ONT
1 stop7h 40m
United Airlines
Deal found 4/9![United Airlines logo]()
$553
Last-minute flights from Ontario to BuffaloDiscover last-minute flight deals from Ontario to Buffalo. Data last updated April 10, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Buffalo. Data last updated April 10, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 4/6. 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 4/297:00 am
ONT
- BUF
1 stop7h 16m
United Airlines
Sat 5/211:02 am
BUF
- ONT
1 stop9h 59m
United Airlines
Deal found 4/6![United Airlines logo]()
$477
This Southwest deal was found by Cheapflights users on 4/7. 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 5/211:55 pm
ONT
- BUF
1 stop7h 30m
Southwest
Sat 5/96:30 am
BUF
- ONT
1 stop7h 35m
Southwest
Deal found 4/7![Southwest logo]()
$367
This United Airlines deal was found by Cheapflights users on 4/6. 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 5/66:59 pm
ONT
- BUF
2 stops11h 42m
United Airlines
Wed 5/135:50 pm
BUF
- ONT
1 stop7h 45m
United Airlines
Deal found 4/6![United Airlines logo]()
$482
This Southwest deal was found by Cheapflights users on 4/7. 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.
Thu 5/149:55 pm
ONT
- BUF
1 stop6h 55m
Southwest
Wed 5/206:40 am
BUF
- ONT
1 stop7h 55m
Southwest
Deal found 4/7![Southwest logo]()
$457
This Delta deal was found by Cheapflights users on 4/6. 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.
Sat 5/2312:07 pm
ONT
- BUF
1 stop8h 52m
Delta
Sat 5/306:15 am
BUF
- ONT
1 stop7h 42m
Delta
Deal found 4/6![Delta logo]()
$468
This Delta deal was found by Cheapflights users on 4/8. 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.
Sun 5/2410:00 pm
ONT
- BUF
1 stop10h 13m
Delta
Sat 5/306:15 am
BUF
- ONT
1 stop7h 42m
Delta
Deal found 4/8![Delta logo]()
$428
This United Airlines deal was found by Cheapflights users on 4/6. 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.
Mon 5/256:30 am
ONT
- BUF
1 stop7h 16m
United Airlines
Wed 6/35:52 pm
BUF
- ONT
1 stop7h 54m
United Airlines
Deal found 4/6![United Airlines logo]()
$403
This American Airlines deal was found by Cheapflights users on 4/6. 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.
Mon 5/2510:22 am
ONT
- BUF
1 stop9h 14m
American Airlines
Wed 6/36:02 am
BUF
- ONT
2 stops10h 26m
American Airlines
Deal found 4/6![American Airlines logo]()
$423
This Travelocity deal was found by Cheapflights users on 4/6. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/2510:00 pm
ONT
- BUF
1 stop10h 13m
Delta
Tue 6/26:15 am
BUF
- ONT
1 stop7h 42m
Delta
Deal found 4/6![Delta logo]()
$448
This Southwest deal was found by Cheapflights users on 4/6. 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.
Thu 5/289:55 pm
ONT
- BUF
1 stop6h 55m
Southwest
Mon 6/15:15 am
BUF
- ONT
1 stop9h 05m
Southwest
Deal found 4/6![Southwest logo]()
$438
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 April 10, 2026.
Search for one-way flight options from Ontario to Buffalo. Find affordable one-way fares based on user searches. Data last updated April 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/128:06 pm
ONT
- BUF
2 stops35h 35m
Frontier
Deal found 4/10![Frontier logo]()
$100
This Kiwi.com deal was found by Cheapflights users on 4/6. 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.
Mon 6/86:00 am
ONT
- BUF
2 stops25h 40m
Frontier
Deal found 4/6![Frontier logo]()
$110
This Kiwi.com deal was found by Cheapflights users on 4/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/297:44 pm
ONT
- BUF
2 stops13h 28m
Multiple Airlines
Deal found 4/9![Multiple Airlines logo]()
$131
This Kiwi.com deal was found by Cheapflights users on 4/6. 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.
Mon 6/86:00 am
ONT
- BUF
3 stops34h 07m
Multiple Airlines
Deal found 4/6![Multiple Airlines logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 4/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/48:06 pm
ONT
- BUF
2 stops36h 22m
Frontier
Deal found 4/10![Frontier logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 4/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/128:06 pm
ONT
- BUF
3 stops44h 58m
Multiple Airlines
Deal found 4/10![Multiple Airlines logo]()
$176
This Delta deal was found by Cheapflights users on 4/9. 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.
Tue 6/1611:50 am
ONT
- BUF
1 stop9h 09m
Delta
Deal found 4/9![Delta logo]()
$184
This Delta deal was found by Cheapflights users on 4/9. 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 5/96:00 am
ONT
- BUF
2 stops9h 51m
Delta
Deal found 4/9![Delta logo]()
$189
This Kiwi.com deal was found by Cheapflights users on 4/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/911:43 am
ONT
- BUF
2 stops44h 51m
Frontier
Deal found 4/9![Frontier logo]()
$190
This eDestinos deal was found by Cheapflights users on 4/10. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/166:00 am
ONT
- BUF
2 stops28h 55m
Frontier
Deal found 4/10![Frontier logo]()
$191
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 April 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $367 (Southwest) |
One-way from | $100 (Kiwi.com) |
Popular in | July |
Cheapest in | September |
Average price | $406 |
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 April 10, 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 5/2
9:55 pm-8:15 am
1 stop7h 20m
Buffalo
Sat 5/9
12:30 pm-8:45 pm
2 stops11h 15m
$372
OntarioBuffalo
ONT - BUF
ONTBUF
Ontario
Mon 5/25
6:30 am-4:46 pm
1 stop7h 16m
Buffalo
Wed 6/3
5:52 pm-10:46 pm
1 stop7h 54m
$403
OntarioBuffalo
ONT - BUF
ONTBUF
Ontario
Thu 7/9
11:55 pm-10:25 am
1 stop7h 30m
Buffalo
Sun 7/12
5:15 am-9:20 am
1 stop7h 05m
$477
OntarioBuffalo
ONT - BUF
ONTBUF
Ontario
Tue 5/5
7:00 am-4:54 pm
1 stop6h 54m
Buffalo
Thu 5/7
7:00 am-5:52 pm
2 stops13h 52m
$494
Quickest round-trip
OntarioBuffalo
ONT - BUF
ONTBUF
Ontario
Tue 4/28
1:34 pm-11:10 pm
1 stop6h 36m
Buffalo
Thu 4/30
5:55 pm-10:35 pm
1 stop7h 40m
$513
OntarioBuffalo
ONT - BUF
ONTBUF
Ontario
Wed 5/13
6:59 pm-9:41 am
2 stops11h 42m
Buffalo
Tue 5/19
5:50 pm-10:35 pm
1 stop7h 45m
$514
OntarioBuffalo
ONT - BUF
ONTBUF
Ontario
Tue 8/4
5:00 am-8:41 pm
2 stops12h 41m
Buffalo
Tue 8/11
10:54 am-6:19 pm
1 stop10h 25m
$517
OntarioBuffalo
ONT - BUF
ONTBUF
Ontario
Thu 5/7
6:59 pm-9:40 am
2 stops11h 41m
Buffalo
Sun 5/10
5:55 pm-10:35 pm
1 stop7h 40m
$553
OntarioBuffalo
ONT - BUF
ONTBUF
Ontario
Wed 6/17
11:50 am-11:59 pm
1 stop9h 09m
Buffalo
Sat 6/20
6:00 am-10:40 am
1 stop7h 40m
$563
Cheapest one-way
OntarioBuffalo
ONT - BUF
ONTBUF
Ontario
Sat 5/9
10:00 pm-11:13 am
1 stop10h 13m
$184
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 April.
| 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
What is the cheapest month to book a flight from Ontario to Buffalo?
Currently, September is the cheapest month in which you can book a flight from Ontario to Buffalo (average of $147). Flying from Ontario to Buffalo in March is currently the most expensive (average of $256). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip 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 April 10, 2026.
Read reviews from past customers who have flown Southwest,United Airlines, andAmerican 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.
Crew
8.6
Overall
8.0
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Crew
8.6
Overall
8.0
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Crew
8.6
Overall
8.0
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Crew
8.6
Overall
8.0
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
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
Batavia
Williamsville
Orchard Park
Eden
Amherst
West Seneca
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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 April 10, 2026.
Complete your trip
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Ontario and Buffalo flights
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Other flights from Ontario
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Top 3 airlines flying from Ontario to Buffalo
Discover the top 3 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 April 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$168 | Average$411 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$286 | Average$436 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$297 | Average$434 | FlexibilityNo cancel fee | On-time69% |