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Cheap flights from Ontario to Buffalo from $138

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 9/8. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Buffalo

Cheap round-trip flights

Enter your travel dates to find the best prices.
JetBlue Logo
11:50 pm - 2:26 pm
ONT
-
BUF
11h 36m
1 stop
JetBlue Logo
12:10 pm - 8:13 pm
BUF
-
ONT
11h 03m
1 stop
$346JetBlue
Tue, Sep 8 - Fri, Sep 11
American Airlines Logo
10:25 am - 10:59 pm
ONT
-
BUF
9h 34m
1 stop
American Airlines Logo
7:15 am - 1:25 pm
BUF
-
ONT
9h 10m
1 stop
$347American Airlines
Sat, Sep 12 - Sat, Oct 3
American Airlines Logo
6:15 am - 9:55 pm
ONT
-
BUF
12h 40m
2 stops
American Airlines Logo
7:00 am - 1:31 pm
BUF
-
ONT
9h 31m
1 stop
$352American Airlines
Wed, Aug 12 - Tue, Aug 18
American Airlines Logo
6:15 am - 9:55 pm
ONT
-
BUF
12h 40m
2 stops
American Airlines Logo
6:14 am - 1:31 pm
BUF
-
ONT
10h 17m
2 stops
$357American Airlines
Wed, Aug 12 - Tue, Aug 18
JetBlue Logo
9:10 pm - 8:24 am
ONT
-
BUF
8h 14m
1 stop
JetBlue Logo
12:10 pm - 8:13 pm
BUF
-
ONT
11h 03m
1 stop
$367JetBlue
Fri, Sep 11 - Sat, Sep 12
Delta Logo
10:59 pm - 11:15 am
ONT
-
BUF
9h 16m
1 stop
Delta Logo
4:30 pm - 10:14 pm
BUF
-
ONT
8h 44m
1 stop
$369Delta
Wed, Oct 14 - Wed, Oct 21
American Airlines Logo
8:25 am - 10:10 pm
ONT
-
BUF
10h 45m
2 stops
American Airlines Logo
5:30 am - 1:25 pm
BUF
-
ONT
10h 55m
2 stops
$370American Airlines
Sat, Sep 12 - Sat, Oct 3
JetBlue Logo
9:10 pm - 8:24 am
ONT
-
BUF
8h 14m
1 stop
JetBlue Logo
12:10 pm - 8:13 pm
BUF
-
ONT
11h 03m
1 stop
$373JetBlue
Sat, Sep 12 - Sat, Oct 3
Delta Logo
10:59 pm - 11:15 am
ONT
-
BUF
9h 16m
1 stop
Delta Logo
10:15 am - 10:14 pm
BUF
-
ONT
14h 59m
2 stops
$374Delta
Wed, Oct 14 - Tue, Oct 27
American Airlines Logo
12:33 pm - 11:01 pm
ONT
-
BUF
7h 28m
1 stop
American Airlines Logo
7:00 am - 1:31 pm
BUF
-
ONT
9h 31m
1 stop
$375American Airlines
Wed, Aug 12 - Tue, Aug 18

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American Airlines flights from Ontario to Buffalo

Our best American Airlines deals on Ontario to Buffalo flight tickets
American Airlines
Sep 12
ONT10:25 amOntario
9h 34m
1 stop
BUF10:59 pmBuffalo
Oct 3
BUF7:15 amBuffalo
9h 10m
1 stop
ONT1:25 pmOntario
$347
American Airlines
Aug 12
ONT6:15 amOntario
12h 40m
2 stops
BUF9:55 pmBuffalo
Aug 18
BUF7:00 amBuffalo
9h 31m
1 stop
ONT1:31 pmOntario
$352
American Airlines
Aug 12
ONT6:15 amOntario
12h 40m
2 stops
BUF9:55 pmBuffalo
Aug 18
BUF6:14 amBuffalo
10h 17m
2 stops
ONT1:31 pmOntario
$357

Southwest flights from Ontario to Buffalo

Our best Southwest deals on Ontario to Buffalo flight tickets
Southwest
Aug 15
ONT11:55 pmOntario
7h 55m
1 stop
BUF10:50 amBuffalo
Aug 19
BUF3:55 pmBuffalo
9h 05m
1 stop
ONT10:00 pmOntario
$383
Southwest
Aug 17
ONT11:55 pmOntario
8h 25m
1 stop
BUF11:20 amBuffalo
Aug 21
BUF11:45 amBuffalo
7h 25m
1 stop
ONT4:10 pmOntario
$429
Southwest
Jul 21
ONT11:55 pmOntario
7h 30m
1 stop
BUF10:25 amBuffalo
Jul 28
BUF6:00 amBuffalo
9h 40m
2 stops
ONT12:40 pmOntario
$453

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 June 29, 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

Price

Cheapest round-trip

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Tue 9/8

11:50 pm-2:26 pm

1 stop11h 36m

Buffalo

Fri 9/11

12:10 pm-8:13 pm

1 stop11h 03m

$346

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Sat 9/12

10:25 am-10:59 pm

1 stop9h 34m

Buffalo

Sat 10/3

7:15 am-1:25 pm

1 stop9h 10m

$347

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Wed 8/12

6:15 am-9:55 pm

2 stops12h 40m

Buffalo

Tue 8/18

7:00 am-1:31 pm

1 stop9h 31m

$352

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Wed 8/12

6:15 am-9:55 pm

2 stops12h 40m

Buffalo

Tue 8/18

6:14 am-1:31 pm

2 stops10h 17m

$357

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Fri 9/11

9:10 pm-8:24 am

1 stop8h 14m

Buffalo

Sat 9/12

12:10 pm-8:13 pm

1 stop11h 03m

$367

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Wed 10/14

10:59 pm-11:15 am

1 stop9h 16m

Buffalo

Wed 10/21

4:30 pm-10:14 pm

1 stop8h 44m

$369

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Sat 9/12

8:25 am-10:10 pm

2 stops10h 45m

Buffalo

Sat 10/3

5:30 am-1:25 pm

2 stops10h 55m

$370

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Sat 9/12

9:10 pm-8:24 am

1 stop8h 14m

Buffalo

Sat 10/3

12:10 pm-8:13 pm

1 stop11h 03m

$373

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Wed 10/14

10:59 pm-11:15 am

1 stop9h 16m

Buffalo

Tue 10/27

10:15 am-10:14 pm

2 stops14h 59m

$374
Quickest round-trip

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Wed 8/12

12:33 pm-11:01 pm

1 stop7h 28m

Buffalo

Tue 8/18

7:00 am-1:31 pm

1 stop9h 31m

$375

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 typical price of a round-trip flight between Ontario and Buffalo?

What is the cheapest month to fly to Buffalo?

If you aren’t able to travel during the month of March, then book flights to Buffalo from Ontario during February instead. Flights to Buffalo in February, while not as cheap as those in March, still average around $0.

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 $357. Flights from Ontario to Buffalo on a Thursday will generally be more expensive and average around $453. 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 $284. Flying to Buffalo at noon is an ideal time because this is during off-peak travel hours. In the evening is when there is more demand to fly to Buffalo, so prices are often more expensive at around $411 per ticket.

Can stopping save me money on Ontario to Buffalo flights?

You could potentially save up to 50% on your flight if you consider stops on a Ontario to Buffalo flight.

How have Ontario to Buffalo flight prices changed over time?

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

Fastest flight time

6h 27m

Direct flights

None
The fastest flight from Ontario to Buffalo takes 6h 27m
There are no direct flights from Ontario to Buffalo. There are no popular flight routes from Ontario to Buffalo.
Search flight deals

Frequently asked questions about flying from Ontario to Buffalo

  • How far is Ontario to Buffalo by plane?

    There are 2161.5 mi between Ontario and Buffalo. 6h 27m 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
SouthwestPriceFrom $286Free CancellationRating
7.9
4,246 reviews
Search Southwest flights
United AirlinesPriceFrom $346Free CancellationRating
7.4
9,896 reviews
Search United Airlines flights

Traveling to a place near Buffalo?

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