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Cheap flights from Ontario to Buffalo from $184

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 8/11. 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.
American Airlines Logo
12:35 pm - 11:10 pm
ONT
-
BUF
7h 35m
1 stop
American Airlines Logo
4:50 pm - 11:06 pm
BUF
-
ONT
9h 16m
1 stop
$387American Airlines
Wed, Sep 16 - Wed, Sep 23
American Airlines Logo
8:02 pm - 10:19 am
ONT
-
BUF
11h 17m
2 stops
American Airlines Logo
7:00 am - 11:48 am
BUF
-
ONT
7h 48m
1 stop
$392American Airlines
Wed, Sep 16 - Wed, Sep 23
American Airlines Logo
12:35 pm - 11:10 pm
ONT
-
BUF
7h 35m
1 stop
American Airlines Logo
4:50 pm - 9:08 pm
BUF
-
ONT
7h 18m
1 stop
$393American Airlines
Sat, Sep 19 - Wed, Sep 23
United Airlines Logo
7:00 am - 4:47 pm
ONT
-
BUF
6h 47m
1 stop
United Airlines Logo
10:50 am - 8:20 pm
BUF
-
ONT
12h 30m
2 stops
$394United Airlines
Sat, Oct 24 - Wed, Oct 28
American Airlines Logo
8:02 pm - 10:19 am
ONT
-
BUF
11h 17m
2 stops
American Airlines Logo
5:37 am - 1:27 pm
BUF
-
ONT
10h 50m
2 stops
$397American Airlines
Wed, Sep 16 - Wed, Sep 23
American Airlines Logo
8:02 pm - 10:43 am
ONT
-
BUF
11h 41m
2 stops
American Airlines Logo
1:43 pm - 7:55 pm
BUF
-
ONT
9h 12m
1 stop
$398American Airlines
Sat, Sep 19 - Wed, Sep 23
American Airlines Logo
8:02 pm - 11:24 am
ONT
-
BUF
12h 22m
2 stops
American Airlines Logo
5:37 am - 1:27 pm
BUF
-
ONT
10h 50m
2 stops
$403American Airlines
Sat, Sep 19 - Wed, Sep 23
Southwest Logo
11:55 pm - 10:30 am
ONT
-
BUF
7h 35m
1 stop
Southwest Logo
4:00 pm - 11:15 pm
BUF
-
ONT
10h 15m
2 stops
$404Southwest
Sat, Oct 3 - Mon, Oct 5
American Airlines Logo
12:35 pm - 11:10 pm
ONT
-
BUF
7h 35m
1 stop
American Airlines Logo
1:43 pm - 7:55 pm
BUF
-
ONT
9h 12m
1 stop
$408American Airlines
Sat, Sep 26 - Mon, Sep 28
American Airlines Logo
11:59 pm - 2:50 pm
ONT
-
BUF
11h 51m
2 stops
American Airlines Logo
4:49 pm - 9:11 pm
BUF
-
ONT
7h 22m
1 stop
$410American Airlines
Sat, Sep 5 - Tue, Sep 8

Southwest flights from Ontario to Buffalo

Our best Southwest deals on Ontario to Buffalo flight tickets
Southwest
Oct 3
ONT11:55 pmOntario
7h 35m
1 stop
BUF10:30 amBuffalo
Oct 5
BUF4:00 pmBuffalo
10h 15m
2 stops
ONT11:15 pmOntario
$404
Southwest
Aug 20
ONT5:40 amOntario
7h 15m
1 stop
BUF3:55 pmBuffalo
Aug 24
BUF6:50 amBuffalo
6h 30m
1 stop
ONT10:20 amOntario
$429
Southwest
Jul 16
ONT9:40 pmOntario
9h 45m
2 stops
BUF10:25 amBuffalo
Jul 21
BUF6:00 amBuffalo
9h 05m
1 stop
ONT12:05 pmOntario
$434

United Airlines flights from Ontario to Buffalo

Our best United Airlines deals on Ontario to Buffalo flight tickets
United Airlines
Oct 24
ONT7:00 amOntario
6h 47m
1 stop
BUF4:47 pmBuffalo
Oct 28
BUF10:50 amBuffalo
12h 30m
2 stops
ONT8:20 pmOntario
$394
United Airlines
May 24
ONT6:30 amOntario
7h 22m
1 stop
BUF4:52 pmBuffalo
May 28
BUF5:57 pmBuffalo
7h 54m
1 stop
ONT10:51 pmOntario
$527
United Airlines
May 27
ONT1:18 pmOntario
6h 40m
1 stop
BUF10:58 pmBuffalo
May 29
BUF7:00 amBuffalo
13h 56m
2 stops
ONT5:56 pmOntario
$532

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 May 19, 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 9/16

12:35 pm-11:10 pm

1 stop7h 35m

Buffalo

Wed 9/23

4:50 pm-11:06 pm

1 stop9h 16m

$387

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Wed 9/16

8:02 pm-10:19 am

2 stops11h 17m

Buffalo

Wed 9/23

7:00 am-11:48 am

1 stop7h 48m

$392
Quickest round-trip

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Sat 9/19

12:35 pm-11:10 pm

1 stop7h 35m

Buffalo

Wed 9/23

4:50 pm-9:08 pm

1 stop7h 18m

$393

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Sat 10/24

7:00 am-4:47 pm

1 stop6h 47m

Buffalo

Wed 10/28

10:50 am-8:20 pm

2 stops12h 30m

$394

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Wed 9/16

8:02 pm-10:19 am

2 stops11h 17m

Buffalo

Wed 9/23

5:37 am-1:27 pm

2 stops10h 50m

$397

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Sat 9/19

8:02 pm-10:43 am

2 stops11h 41m

Buffalo

Wed 9/23

1:43 pm-7:55 pm

1 stop9h 12m

$398

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Sat 9/19

8:02 pm-11:24 am

2 stops12h 22m

Buffalo

Wed 9/23

5:37 am-1:27 pm

2 stops10h 50m

$403

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Sat 10/3

11:55 pm-10:30 am

1 stop7h 35m

Buffalo

Mon 10/5

4:00 pm-11:15 pm

2 stops10h 15m

$404

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Sat 9/26

12:35 pm-11:10 pm

1 stop7h 35m

Buffalo

Mon 9/28

1:43 pm-7:55 pm

1 stop9h 12m

$408

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Sat 9/5

11:59 pm-2:50 pm

2 stops11h 51m

Buffalo

Tue 9/8

4:49 pm-9:11 pm

1 stop7h 22m

$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 $322. Flights from Ontario to Buffalo on a Saturday will generally be more expensive and average around $397. 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 $328. 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 $354 per ticket.

Can stopping save me money on Ontario to Buffalo flights?

You could potentially save up to 60% 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
7.9
4,284 reviews
Search Southwest flights
United AirlinesPriceFrom $297Free CancellationRating
7.4
9,733 reviews
Search United Airlines flights

  • United Airlines Flights From Ontario to Buffalo

    The lowest priced United Airlines flight from Ontario to Buffalo from the last 72 hours was $297. Generally, United Airlines has 1 flight on this route every week with an average price of $434. United Airlines is rated 7.4/10 by our users.

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
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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