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Cheap flights from Ontario to Buffalo from $135

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 9/30. 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.
United Airlines Logo
1:18 pm - 10:37 pm
ONT
-
BUF
6h 19m
1 stop
United Airlines Logo
10:40 am - 8:31 pm
BUF
-
ONT
12h 51m
2 stops
$276United Airlines
Wed, Sep 23 - Tue, Sep 29
American Airlines Logo
7:20 am - 10:10 pm
ONT
-
BUF
11h 50m
2 stops
American Airlines Logo
11:03 am - 6:53 pm
BUF
-
ONT
10h 50m
2 stops
$282American Airlines
Wed, Sep 23 - Tue, Sep 29
Delta Logo
12:17 pm - 11:54 pm
ONT
-
BUF
8h 37m
1 stop
Delta Logo
6:05 am - 11:07 am
BUF
-
ONT
8h 02m
1 stop
$297Delta
Thu, Sep 10 - Sat, Sep 26
Delta Logo
10:00 pm - 1:25 pm
ONT
-
BUF
12h 25m
2 stops
Delta Logo
3:58 pm - 10:26 pm
BUF
-
ONT
9h 28m
1 stop
$302Delta
Mon, Sep 14 - Fri, Sep 25
American Airlines Logo
10:29 am - 11:01 pm
ONT
-
BUF
9h 32m
1 stop
American Airlines Logo
7:00 am - 1:53 pm
BUF
-
ONT
9h 53m
1 stop
$316American Airlines
Sat, Aug 22 - Sat, Aug 29
United Airlines Logo
9:01 am - 11:44 pm
ONT
-
BUF
11h 43m
2 stops
United Airlines Logo
8:55 am - 12:50 pm
BUF
-
ONT
6h 55m
1 stop
$318United Airlines
Wed, Sep 2 - Sun, Sep 6
Delta Logo
7:05 am - 5:50 pm
ONT
-
BUF
7h 45m
1 stop
Delta Logo
6:00 am - 11:08 am
BUF
-
ONT
8h 08m
1 stop
$319Delta
Tue, Oct 6 - Tue, Oct 13
American Airlines Logo
10:29 am - 12:02 am
ONT
-
BUF
10h 33m
2 stops
American Airlines Logo
7:00 am - 1:53 pm
BUF
-
ONT
9h 53m
1 stop
$320American Airlines
Sat, Aug 22 - Sat, Aug 29
American Airlines Logo
7:11 pm - 11:39 am
ONT
-
BUF
13h 28m
2 stops
American Airlines Logo
12:56 pm - 10:37 pm
BUF
-
ONT
12h 41m
2 stops
$323American Airlines
Thu, Sep 24 - Tue, Sep 29
American Airlines Logo
10:29 am - 12:02 am
ONT
-
BUF
10h 33m
2 stops
American Airlines Logo
5:32 am - 12:03 pm
BUF
-
ONT
9h 31m
2 stops
$324American Airlines
Sat, Aug 22 - Sat, Aug 29

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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 23
ONT7:20 amOntario
11h 50m
2 stops
BUF10:10 pmBuffalo
Sep 29
BUF11:03 amBuffalo
10h 50m
2 stops
ONT6:53 pmOntario
$282
American Airlines
Aug 22
ONT10:29 amOntario
9h 32m
1 stop
BUF11:01 pmBuffalo
Aug 29
BUF7:00 amBuffalo
9h 53m
1 stop
ONT1:53 pmOntario
$316
American Airlines
Aug 22
ONT10:29 amOntario
10h 33m
2 stops
BUF12:02 amBuffalo
Aug 29
BUF7:00 amBuffalo
9h 53m
1 stop
ONT1:53 pmOntario
$320

United Airlines flights from Ontario to Buffalo

Our best United Airlines deals on Ontario to Buffalo flight tickets
United Airlines
Sep 23
ONT1:18 pmOntario
6h 19m
1 stop
BUF10:37 pmBuffalo
Sep 29
BUF10:40 amBuffalo
12h 51m
2 stops
ONT8:31 pmOntario
$276
United Airlines
Sep 2
ONT9:01 amOntario
11h 43m
2 stops
BUF11:44 pmBuffalo
Sep 6
BUF8:55 amBuffalo
6h 55m
1 stop
ONT12:50 pmOntario
$318
United Airlines
Aug 21
ONT1:18 pmOntario
6h 19m
1 stop
BUF10:37 pmBuffalo
Aug 25
BUF5:58 pmBuffalo
7h 37m
1 stop
ONT10:35 pmOntario
$331

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 July 13, 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

1:18 pm-10:37 pm

1 stop6h 19m

Buffalo

Tue 9/29

10:40 am-8:31 pm

2 stops12h 51m

$276

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Wed 9/23

7:20 am-10:10 pm

2 stops11h 50m

Buffalo

Tue 9/29

11:03 am-6:53 pm

2 stops10h 50m

$282

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Thu 9/10

12:17 pm-11:54 pm

1 stop8h 37m

Buffalo

Sat 9/26

6:05 am-11:07 am

1 stop8h 02m

$297

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Mon 9/14

10:00 pm-1:25 pm

2 stops12h 25m

Buffalo

Fri 9/25

3:58 pm-10:26 pm

1 stop9h 28m

$302

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Sat 8/22

10:29 am-11:01 pm

1 stop9h 32m

Buffalo

Sat 8/29

7:00 am-1:53 pm

1 stop9h 53m

$316

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Wed 9/2

9:01 am-11:44 pm

2 stops11h 43m

Buffalo

Sun 9/6

8:55 am-12:50 pm

1 stop6h 55m

$318
Quickest round-trip

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Tue 10/6

7:05 am-5:50 pm

1 stop7h 45m

Buffalo

Tue 10/13

6:00 am-11:08 am

1 stop8h 08m

$319

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Sat 8/22

10:29 am-12:02 am

2 stops10h 33m

Buffalo

Sat 8/29

7:00 am-1:53 pm

1 stop9h 53m

$320

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Thu 9/24

7:11 pm-11:39 am

2 stops13h 28m

Buffalo

Tue 9/29

12:56 pm-10:37 pm

2 stops12h 41m

$323

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Sat 8/22

10:29 am-12:02 am

2 stops10h 33m

Buffalo

Sat 8/29

5:32 am-12:03 pm

2 stops9h 31m

$324

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 $367. Flights from Ontario to Buffalo on a Thursday will generally be more expensive and average around $474. 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 $420 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 19m

Direct flights

None
The fastest flight from Ontario to Buffalo takes 6h 19m
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 19m 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
4,250 reviews
Search Southwest flights
United AirlinesPriceFrom $297Free CancellationRating
7.4
9,981 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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