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Cheap flights from Ontario to Buffalo from $106

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Buffalo departing on 1/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Ontario to Buffalo

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
10:20 pm - 11:19 amONT-BUF
9h 59m1 stop
Delta Logo
6:00 am - 11:59 amBUF-ONT
8h 59m1 stop
$307Delta
Find Deal
Wed, Feb 18 - Tue, Feb 24
American Airlines Logo
10:34 pm - 11:03 amONT-BUF
9h 29m1 stop
American Airlines Logo
6:20 am - 1:55 pmBUF-ONT
10h 35m1 stop
$308American Airlines
Find Deal
Sat, Dec 6 - Sat, Dec 13
Delta Logo
6:00 am - 4:59 pmONT-BUF
7h 59m2 stops
Delta Logo
6:00 am - 11:59 amBUF-ONT
8h 59m1 stop
$312Delta
Find Deal
Wed, Feb 18 - Tue, Feb 24
American Airlines Logo
10:34 pm - 11:03 amONT-BUF
9h 29m1 stop
American Airlines Logo
10:19 am - 4:02 pmBUF-ONT
8h 43m2 stops
$313American Airlines
Find Deal
Sat, Dec 6 - Sat, Dec 13
Delta Logo
6:00 am - 4:59 pmONT-BUF
7h 59m2 stops
Delta Logo
12:25 pm - 10:40 pmBUF-ONT
13h 15m2 stops
$317Delta
Find Deal
Wed, Feb 18 - Tue, Feb 24
Delta Logo
12:12 pm - 11:59 pmONT-BUF
8h 47m1 stop
Delta Logo
6:00 am - 11:02 amBUF-ONT
8h 02m1 stop
$343Delta
Find Deal
Wed, Dec 3 - Sat, Dec 6
United Airlines Logo
6:41 pm - 9:48 amONT-BUF
12h 07m2 stops
United Airlines Logo
7:00 am - 5:37 pmBUF-ONT
13h 37m2 stops
$417United Airlines
Find Deal
Wed, Dec 3 - Sat, Dec 6
Southwest Logo
11:55 pm - 10:15 amONT-BUF
7h 20m1 stop
Southwest Logo
9:45 am - 4:20 pmBUF-ONT
9h 35m1 stop
$418Southwest
Find Deal
Sun, Apr 19 - Wed, Apr 22
United Airlines Logo
6:00 am - 11:44 pmONT-BUF
14h 44m2 stops
United Airlines Logo
6:00 am - 5:41 pmBUF-ONT
14h 41m3 stops
$422United Airlines
Find Deal
Wed, Feb 18 - Tue, Feb 24
Southwest Logo
5:00 am - 6:50 pmONT-BUF
10h 50m1 stop
Southwest Logo
9:45 am - 4:20 pmBUF-ONT
9h 35m1 stop
$423Southwest
Find Deal
Fri, Apr 3 - Tue, Apr 7

Delta flights from Ontario to Buffalo

Our best Delta deals on Ontario to Buffalo flight tickets
Delta
Feb 18
ONT10:20 pmOntario
9h 59m
1 stop
BUF11:19 amBuffalo
Feb 24
BUF6:00 amBuffalo
8h 59m
1 stop
ONT11:59 amOntario
$307
Find similar
Delta
Feb 18
ONT6:00 amOntario
7h 59m
2 stops
BUF4:59 pmBuffalo
Feb 24
BUF6:00 amBuffalo
8h 59m
1 stop
ONT11:59 amOntario
$312
Find similar
Delta
Feb 18
ONT6:00 amOntario
7h 59m
2 stops
BUF4:59 pmBuffalo
Feb 24
BUF12:25 pmBuffalo
13h 15m
2 stops
ONT10:40 pmOntario
$317
Find similar

United Airlines flights from Ontario to Buffalo

Our best United Airlines deals on Ontario to Buffalo flight tickets
United Airlines
Dec 3
ONT6:41 pmOntario
12h 07m
2 stops
BUF9:48 amBuffalo
Dec 6
BUF7:00 amBuffalo
13h 37m
2 stops
ONT5:37 pmOntario
$417
Find similar
United Airlines
Feb 18
ONT6:00 amOntario
14h 44m
2 stops
BUF11:44 pmBuffalo
Feb 24
BUF6:00 amBuffalo
14h 41m
3 stops
ONT5:41 pmOntario
$422
Find similar
United Airlines
Dec 4
ONT6:41 pmOntario
12h 07m
2 stops
BUF9:48 amBuffalo
Dec 6
BUF7:00 amBuffalo
13h 37m
2 stops
ONT5:37 pmOntario
$456
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated November 10, 2025.
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

Price

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Wed 2/18

10:20 pm-11:19 am

1 stop9h 59m

Buffalo

Tue 2/24

6:00 am-11:59 am

1 stop8h 59m

$307

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Sat 12/6

10:34 pm-11:03 am

1 stop9h 29m

Buffalo

Sat 12/13

6:20 am-1:55 pm

1 stop10h 35m

$308

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Wed 2/18

6:00 am-4:59 pm

2 stops7h 59m

Buffalo

Tue 2/24

6:00 am-11:59 am

1 stop8h 59m

$312

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Sat 12/6

10:34 pm-11:03 am

1 stop9h 29m

Buffalo

Sat 12/13

10:19 am-4:02 pm

2 stops8h 43m

$313

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Wed 2/18

6:00 am-4:59 pm

2 stops7h 59m

Buffalo

Tue 2/24

12:25 pm-10:40 pm

2 stops13h 15m

$317

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Wed 12/3

12:12 pm-11:59 pm

1 stop8h 47m

Buffalo

Sat 12/6

6:00 am-11:02 am

1 stop8h 02m

$343

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Wed 12/3

6:41 pm-9:48 am

2 stops12h 07m

Buffalo

Sat 12/6

7:00 am-5:37 pm

2 stops13h 37m

$417

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Sun 4/19

11:55 pm-10:15 am

1 stop7h 20m

Buffalo

Wed 4/22

9:45 am-4:20 pm

1 stop9h 35m

$418

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Wed 2/18

6:00 am-11:44 pm

2 stops14h 44m

Buffalo

Tue 2/24

6:00 am-5:41 pm

3 stops14h 41m

$422

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Fri 4/3

5:00 am-6:50 pm

1 stop10h 50m

Buffalo

Tue 4/7

9:45 am-4:20 pm

1 stop9h 35m

$423

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Buffalo from

How to get the cheapest flight ticket from Ontario to Buffalo

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Buffalo?

If you aren’t able to travel during the month of January, then book flights to Buffalo from Ontario during May instead. Flights to Buffalo in May, while not as cheap as those in January, still average around $346.

What is the cheapest day to depart on your flight to Buffalo?

Our data shows that Monday is the least expensive day to fly to Buffalo. Tickets to fly out on this day can be as low as $298. Flights from Ontario to Buffalo on a Sunday will generally be more expensive and average around $409. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Buffalo?

At noon is the cheapest time of day to fly from Ontario to Buffalo when you can find flight prices for as low as $297. Flying to Buffalo at noon is an ideal time because this is during off-peak travel hours. In the morning is when there is more demand to fly to Buffalo, so prices are often more expensive at around $360 per ticket.

How have Ontario to Buffalo flight prices changed over time?

As of November 2025, prices for Ontario to Buffalo flights are approximately 21% more expensive when compared to flights at the same time last year.

When to book flights from Ontario to Buffalo

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Buffalo according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Ontario to Buffalo (ONT to BUF) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Buffalo

Direct flights

None
There are no direct flights from Ontario to Buffalo. There are no popular flight routes from Ontario to Buffalo.
Search flight deals

  • How far is Ontario to Buffalo by plane?

    There are 2161.5 mi between Ontario and Buffalo. 6h 14m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Ontario Airport to Buffalo Airport?

    Prices for flights from Ontario Airport to Buffalo Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Ontario Airport to Buffalo Airport?

  • How old do you have to be to fly from Ontario Airport to Buffalo Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Buffalo Airport.

  • What documentation or ID do you need to fly to Buffalo Airport?

    The required travel and health documents for your Buffalo Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Buffalo Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Ontario to Buffalo?

Best airlines flying from Ontario to Buffalo

Compare and see reviews for airlines that fly from Ontario to Buffalo with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $286Free CancellationRating
7.2
11,045 reviews
Search American Airlines flights
United AirlinesPriceFrom $297Free CancellationRating
7.4
9,012 reviews
Search United Airlines flights
SouthwestPriceFrom $353Free CancellationRating
8.0
4,235 reviews
Search Southwest flights

Traveling to a place near Buffalo?

Book flights to Buffalo if you plan to visit one of these locations
Batavia
Cheektowaga
Amherst
Tonawanda
Grand Island
Williamsville
Lockport
Orchard Park
West Seneca
East Aurora
Bowmansville
Eden
Angola

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Buffalo?

It is quick and easy to find Ontario to Buffalo flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Buffalo that suits you.

Can I find flights from Ontario to Buffalo with flexible booking policies on momondo?

Yes. All flights to Buffalo from Ontario on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Ontario to Buffalo?

momondo provides multiple filters to help you find the best flight to Buffalo from Ontario. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Ontario to Buffalo right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Ontario to Buffalo flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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