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Cheap flights from Ontario to Buffalo from $152

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 5/26. 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
12:00 pm - 11:58 pm
ONT
-
BUF
8h 58m
1 stop
Delta Logo
12:09 pm - 6:01 pm
BUF
-
ONT
8h 52m
1 stop
$367Delta
Wed, Sep 23 - Wed, Sep 30
Southwest Logo
11:55 pm - 10:45 am
ONT
-
BUF
7h 50m
1 stop
Southwest Logo
12:00 pm - 7:35 pm
BUF
-
ONT
10h 35m
2 stops
$372Southwest
Wed, Sep 23 - Wed, Sep 30
Southwest Logo
11:55 pm - 12:45 pm
ONT
-
BUF
9h 50m
2 stops
Southwest Logo
12:00 pm - 7:35 pm
BUF
-
ONT
10h 35m
2 stops
$377Southwest
Wed, Sep 23 - Wed, Sep 30
Southwest Logo
11:55 pm - 10:15 am
ONT
-
BUF
7h 20m
1 stop
Southwest Logo
5:05 am - 9:10 am
BUF
-
ONT
7h 05m
1 stop
$385Southwest
Thu, May 28 - Sat, Jun 6
Southwest Logo
9:55 pm - 10:15 am
ONT
-
BUF
9h 20m
2 stops
Southwest Logo
5:45 pm - 10:50 pm
BUF
-
ONT
8h 05m
1 stop
$390Southwest
Thu, May 28 - Sat, Jun 6
Delta Logo
12:00 pm - 11:58 pm
ONT
-
BUF
8h 58m
1 stop
Delta Logo
4:30 pm - 10:14 pm
BUF
-
ONT
8h 44m
1 stop
$392Delta
Tue, Sep 29 - Wed, Oct 21
Southwest Logo
9:55 pm - 10:15 am
ONT
-
BUF
9h 20m
2 stops
Southwest Logo
4:50 pm - 10:50 pm
BUF
-
ONT
9h 00m
2 stops
$395Southwest
Thu, May 28 - Sat, Jun 6
Delta Logo
12:00 pm - 11:58 pm
ONT
-
BUF
8h 58m
1 stop
Delta Logo
7:00 am - 6:18 pm
BUF
-
ONT
14h 18m
2 stops
$397Delta
Wed, Sep 30 - Wed, Oct 21
Delta Logo
10:59 pm - 1:46 pm
ONT
-
BUF
11h 47m
2 stops
Delta Logo
10:30 am - 10:14 pm
BUF
-
ONT
14h 44m
2 stops
$402Delta
Tue, Sep 29 - Tue, Oct 20
Delta Logo
7:00 am - 6:43 pm
ONT
-
BUF
8h 43m
1 stop
Delta Logo
7:00 am - 6:18 pm
BUF
-
ONT
14h 18m
2 stops
$410Delta
Tue, Sep 29 - Thu, Oct 22

JetBlue flights from Ontario to Buffalo

Our best JetBlue deals on Ontario to Buffalo flight tickets
JetBlue
May 19
ONT11:40 pmOntario
11h 42m
1 stop
BUF2:22 pmBuffalo
May 28
BUF2:47 pmBuffalo
9h 00m
1 stop
ONT8:47 pmOntario
$478
JetBlue
May 19
ONT11:40 pmOntario
11h 42m
1 stop
BUF2:22 pmBuffalo
May 23
BUF2:47 pmBuffalo
9h 00m
1 stop
ONT8:47 pmOntario
$485

American Airlines flights from Ontario to Buffalo

Our best American Airlines deals on Ontario to Buffalo flight tickets
American Airlines
May 29
ONT10:22 amOntario
9h 14m
1 stop
BUF10:36 pmBuffalo
May 30
BUF5:36 amBuffalo
9h 29m
2 stops
ONT12:05 pmOntario
$413
American Airlines
May 29
ONT10:22 amOntario
9h 14m
1 stop
BUF10:36 pmBuffalo
May 30
BUF7:00 amBuffalo
9h 28m
1 stop
ONT1:28 pmOntario
$425
American Airlines
May 14
ONT12:19 pmOntario
8h 31m
2 stops
BUF11:50 pmBuffalo
May 19
BUF6:00 amBuffalo
13h 22m
2 stops
ONT4:22 pmOntario
$508

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 April 28, 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

Wed 9/23

12:00 pm-11:58 pm

1 stop8h 58m

Buffalo

Wed 9/30

12:09 pm-6:01 pm

1 stop8h 52m

$367

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Wed 9/23

11:55 pm-10:45 am

1 stop7h 50m

Buffalo

Wed 9/30

12:00 pm-7:35 pm

2 stops10h 35m

$372

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Wed 9/23

11:55 pm-12:45 pm

2 stops9h 50m

Buffalo

Wed 9/30

12:00 pm-7:35 pm

2 stops10h 35m

$377
Quickest round-trip

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Thu 5/28

11:55 pm-10:15 am

1 stop7h 20m

Buffalo

Sat 6/6

5:05 am-9:10 am

1 stop7h 05m

$385

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Thu 5/28

9:55 pm-10:15 am

2 stops9h 20m

Buffalo

Sat 6/6

5:45 pm-10:50 pm

1 stop8h 05m

$390

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Tue 9/29

12:00 pm-11:58 pm

1 stop8h 58m

Buffalo

Wed 10/21

4:30 pm-10:14 pm

1 stop8h 44m

$392

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Thu 5/28

9:55 pm-10:15 am

2 stops9h 20m

Buffalo

Sat 6/6

4:50 pm-10:50 pm

2 stops9h 00m

$395

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Wed 9/30

12:00 pm-11:58 pm

1 stop8h 58m

Buffalo

Wed 10/21

7:00 am-6:18 pm

2 stops14h 18m

$397

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Tue 9/29

10:59 pm-1:46 pm

2 stops11h 47m

Buffalo

Tue 10/20

10:30 am-10:14 pm

2 stops14h 44m

$402

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Tue 9/29

7:00 am-6:43 pm

1 stop8h 43m

Buffalo

Thu 10/22

7:00 am-6:18 pm

2 stops14h 18m

$410

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 $289. Flights from Ontario to Buffalo on a Sunday will generally be more expensive and average around $394. 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 evening is when there is more demand to fly to Buffalo, so prices are often more expensive at around $348 per ticket.

Can stopping save me money on Ontario to Buffalo flights?

You could potentially save up to 43% 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 25m

Direct flights

None
The fastest flight from Ontario to Buffalo takes 6h 25m
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 25m 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
8.0
4,315 reviews
Search Southwest flights
United AirlinesPriceFrom $297Free CancellationRating
7.4
9,680 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
Grand Island
Williamsville
Orchard Park
Lockport
West Seneca
Bowmansville
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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