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Cheap flights from Ontario to Buffalo from $150

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 3/18. 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.
JetBlue Logo
11:25 pm - 11:29 am
ONT
-
BUF
9h 04m
1 stop
JetBlue Logo
4:00 pm - 10:09 pm
BUF
-
ONT
9h 09m
1 stop
$269JetBlue
Fri, May 29 - Tue, Jun 2
JetBlue Logo
11:25 pm - 11:29 am
ONT
-
BUF
9h 04m
1 stop
JetBlue Logo
12:25 pm - 10:09 pm
BUF
-
ONT
12h 44m
1 stop
$351JetBlue
Fri, May 29 - Wed, Jun 3
American Airlines Logo
11:59 pm - 12:51 pm
ONT
-
BUF
9h 52m
1 stop
American Airlines Logo
1:32 pm - 9:24 pm
BUF
-
ONT
10h 52m
1 stop
$356American Airlines
Mon, Mar 16 - Wed, Mar 18
United Airlines Logo
11:59 pm - 2:14 pm
ONT
-
BUF
11h 15m
2 stops
United Airlines Logo
8:17 am - 12:48 pm
BUF
-
ONT
7h 31m
1 stop
$361United Airlines
Mon, Mar 16 - Wed, Mar 18
United Airlines Logo
11:59 pm - 2:14 pm
ONT
-
BUF
11h 15m
2 stops
United Airlines Logo
10:32 am - 10:57 pm
BUF
-
ONT
15h 25m
2 stops
$366United Airlines
Mon, Mar 16 - Wed, Mar 18
United Airlines Logo
1:50 pm - 11:10 pm
ONT
-
BUF
6h 20m
1 stop
United Airlines Logo
5:29 pm - 10:18 pm
BUF
-
ONT
7h 49m
1 stop
$385United Airlines
Thu, Mar 12 - Mon, Mar 16
JetBlue Logo
11:25 pm - 11:29 am
ONT
-
BUF
9h 04m
1 stop
JetBlue Logo
4:00 pm - 10:09 pm
BUF
-
ONT
9h 09m
1 stop
$387JetBlue
Sun, May 24 - Tue, Jun 2
United Airlines Logo
6:15 am - 11:10 pm
ONT
-
BUF
13h 55m
2 stops
United Airlines Logo
5:29 pm - 10:18 pm
BUF
-
ONT
7h 49m
1 stop
$390United Airlines
Thu, Mar 12 - Mon, Mar 16
American Airlines Logo
7:59 pm - 10:58 am
ONT
-
BUF
11h 59m
2 stops
American Airlines Logo
4:04 pm - 11:59 pm
BUF
-
ONT
10h 55m
2 stops
$395American Airlines
Thu, Mar 12 - Mon, Mar 16
United Airlines Logo
1:00 pm - 10:58 pm
ONT
-
BUF
6h 58m
1 stop
United Airlines Logo
7:00 am - 5:18 pm
BUF
-
ONT
13h 18m
2 stops
$412United Airlines
Sun, May 24 - Tue, Jun 2

Southwest flights from Ontario to Buffalo

Our best Southwest deals on Ontario to Buffalo flight tickets
Southwest
Mar 13
ONT9:55 pmOntario
6h 55m
1 stop
BUF7:50 amBuffalo
Mar 16
BUF9:10 amBuffalo
7h 55m
1 stop
ONT2:05 pmOntario
$447
Southwest
Jul 8
ONT7:20 pmOntario
9h 50m
2 stops
BUF8:10 amBuffalo
Jul 14
BUF11:00 amBuffalo
9h 55m
2 stops
ONT5:55 pmOntario
$467
Southwest
Mar 9
ONT11:55 pmOntario
7h 15m
1 stop
BUF10:10 amBuffalo
Mar 14
BUF10:50 amBuffalo
12h 50m
1 stop
ONT8:40 pmOntario
$496

American Airlines flights from Ontario to Buffalo

Our best American Airlines deals on Ontario to Buffalo flight tickets
American Airlines
Mar 16
ONT11:59 pmOntario
9h 52m
1 stop
BUF12:51 pmBuffalo
Mar 18
BUF1:32 pmBuffalo
10h 52m
1 stop
ONT9:24 pmOntario
$356
American Airlines
Mar 12
ONT7:59 pmOntario
11h 59m
2 stops
BUF10:58 amBuffalo
Mar 16
BUF4:04 pmBuffalo
10h 55m
2 stops
ONT11:59 pmOntario
$395
American Airlines
Mar 13
ONT7:59 pmOntario
11h 59m
2 stops
BUF10:58 amBuffalo
Mar 16
BUF1:32 pmBuffalo
10h 52m
1 stop
ONT9:24 pmOntario
$416

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 February 14, 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

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Fri 5/29

11:25 pm-11:29 am

1 stop9h 04m

Buffalo

Tue 6/2

4:00 pm-10:09 pm

1 stop9h 09m

$269

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Fri 5/29

11:25 pm-11:29 am

1 stop9h 04m

Buffalo

Wed 6/3

12:25 pm-10:09 pm

1 stop12h 44m

$351

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Mon 3/16

11:59 pm-12:51 pm

1 stop9h 52m

Buffalo

Wed 3/18

1:32 pm-9:24 pm

1 stop10h 52m

$356

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Mon 3/16

11:59 pm-2:14 pm

2 stops11h 15m

Buffalo

Wed 3/18

8:17 am-12:48 pm

1 stop7h 31m

$361

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Mon 3/16

11:59 pm-2:14 pm

2 stops11h 15m

Buffalo

Wed 3/18

10:32 am-10:57 pm

2 stops15h 25m

$366

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Thu 3/12

1:50 pm-11:10 pm

1 stop6h 20m

Buffalo

Mon 3/16

5:29 pm-10:18 pm

1 stop7h 49m

$385

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Sun 5/24

11:25 pm-11:29 am

1 stop9h 04m

Buffalo

Tue 6/2

4:00 pm-10:09 pm

1 stop9h 09m

$387

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Thu 3/12

6:15 am-11:10 pm

2 stops13h 55m

Buffalo

Mon 3/16

5:29 pm-10:18 pm

1 stop7h 49m

$390

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Thu 3/12

7:59 pm-10:58 am

2 stops11h 59m

Buffalo

Mon 3/16

4:04 pm-11:59 pm

2 stops10h 55m

$395

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Sun 5/24

1:00 pm-10:58 pm

1 stop6h 58m

Buffalo

Tue 6/2

7:00 am-5:18 pm

2 stops13h 18m

$412

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 May, then book flights to Buffalo from Ontario during September instead. Flights to Buffalo in September, while not as cheap as those in May, 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 $289. Flights from Ontario to Buffalo on a Sunday will generally be more expensive and average around $376. 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 $270. 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 $342 per ticket.

Can stopping save me money on Ontario to Buffalo flights?

You could potentially save up to 45% 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 14m

Direct flights

None
The fastest flight from Ontario to Buffalo takes 6h 14m
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 $168Free CancellationRating
7.2
11,288 reviews
Search American Airlines flights
United AirlinesPriceFrom $297Free CancellationRating
7.4
9,289 reviews
Search United Airlines flights
SouthwestPriceFrom $342Free CancellationRating
8.0
4,284 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
Grand Island
Tonawanda
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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