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Cheap flights from Ontario to Buffalo from $189

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 10/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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 - 11:59 pm
ONT
-
BUF
8h 59m
1 stop
Delta Logo
6:00 am - 10:42 am
BUF
-
ONT
7h 42m
1 stop
$387Delta
Tue, Aug 18 - Tue, Aug 25
Southwest Logo
11:55 pm - 11:20 am
ONT
-
BUF
8h 25m
1 stop
Southwest Logo
6:50 am - 10:20 am
BUF
-
ONT
6h 30m
1 stop
$393Southwest
Tue, Aug 18 - Mon, Aug 24
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
7:15 pm - 10:16 am
ONT
-
BUF
12h 01m
2 stops
American Airlines Logo
3:40 pm - 10:04 pm
BUF
-
ONT
9h 24m
1 stop
$398American Airlines
Wed, Jul 29 - Sat, Aug 15
Southwest Logo
10:05 am - 8:45 pm
ONT
-
BUF
7h 40m
1 stop
Southwest Logo
8:05 am - 2:25 pm
BUF
-
ONT
9h 20m
1 stop
$399Southwest
Thu, Oct 22 - Mon, Oct 26
Southwest Logo
7:45 am - 8:35 pm
ONT
-
BUF
9h 50m
2 stops
Southwest Logo
3:55 pm - 10:10 pm
BUF
-
ONT
9h 15m
2 stops
$403Southwest
Tue, Aug 18 - Mon, Aug 24
Southwest Logo
10:05 am - 8:45 pm
ONT
-
BUF
7h 40m
1 stop
Southwest Logo
8:05 am - 2:10 pm
BUF
-
ONT
9h 05m
2 stops
$404Southwest
Thu, Oct 22 - Mon, Oct 26
Southwest Logo
7:00 am - 6:25 pm
ONT
-
BUF
8h 25m
2 stops
Southwest Logo
4:00 pm - 10:35 pm
BUF
-
ONT
9h 35m
2 stops
$409Southwest
Thu, Oct 22 - Mon, Oct 26
American Airlines Logo
8:01 pm - 10:18 am
ONT
-
BUF
11h 17m
2 stops
American Airlines Logo
4:49 pm - 9:11 pm
BUF
-
ONT
7h 22m
1 stop
$411American Airlines
Thu, Aug 6 - Tue, Aug 11
American Airlines Logo
5:34 am - 3:52 pm
ONT
-
BUF
7h 18m
1 stop
American Airlines Logo
3:40 pm - 10:04 pm
BUF
-
ONT
9h 24m
1 stop
$426American Airlines
Wed, Jul 29 - Sat, Aug 15

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
Aug 25
ONT7:00 amOntario
6h 56m
1 stop
BUF4:56 pmBuffalo
Aug 26
BUF10:30 amBuffalo
12h 31m
2 stops
ONT8:01 pmOntario
$459
United Airlines
Jun 20
ONT5:00 amOntario
13h 03m
2 stops
BUF9:03 pmBuffalo
Jun 24
BUF6:04 pmBuffalo
7h 47m
1 stop
ONT10:51 pmOntario
$487

Delta flights from Ontario to Buffalo

Our best Delta deals on Ontario to Buffalo flight tickets
Delta
Aug 18
ONT12:00 pmOntario
8h 59m
1 stop
BUF11:59 pmBuffalo
Aug 25
BUF6:00 amBuffalo
7h 42m
1 stop
ONT10:42 amOntario
$387
Delta
Aug 21
ONT10:00 pmOntario
10h 22m
2 stops
BUF11:22 amBuffalo
Aug 27
BUF3:54 pmBuffalo
10h 40m
2 stops
ONT11:34 pmOntario
$448
Delta
Aug 19
ONT12:00 pmOntario
8h 59m
1 stop
BUF11:59 pmBuffalo
Aug 25
BUF6:00 amBuffalo
7h 42m
1 stop
ONT10:42 amOntario
$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 May 31, 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 8/18

12:00 pm-11:59 pm

1 stop8h 59m

Buffalo

Tue 8/25

6:00 am-10:42 am

1 stop7h 42m

$387
Quickest round-trip

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Tue 8/18

11:55 pm-11:20 am

1 stop8h 25m

Buffalo

Mon 8/24

6:50 am-10:20 am

1 stop6h 30m

$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 7/29

7:15 pm-10:16 am

2 stops12h 01m

Buffalo

Sat 8/15

3:40 pm-10:04 pm

1 stop9h 24m

$398

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Thu 10/22

10:05 am-8:45 pm

1 stop7h 40m

Buffalo

Mon 10/26

8:05 am-2:25 pm

1 stop9h 20m

$399

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Tue 8/18

7:45 am-8:35 pm

2 stops9h 50m

Buffalo

Mon 8/24

3:55 pm-10:10 pm

2 stops9h 15m

$403

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Thu 10/22

10:05 am-8:45 pm

1 stop7h 40m

Buffalo

Mon 10/26

8:05 am-2:10 pm

2 stops9h 05m

$404

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Thu 10/22

7:00 am-6:25 pm

2 stops8h 25m

Buffalo

Mon 10/26

4:00 pm-10:35 pm

2 stops9h 35m

$409

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Thu 8/6

8:01 pm-10:18 am

2 stops11h 17m

Buffalo

Tue 8/11

4:49 pm-9:11 pm

1 stop7h 22m

$411

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Wed 7/29

5:34 am-3:52 pm

1 stop7h 18m

Buffalo

Sat 8/15

3:40 pm-10:04 pm

1 stop9h 24m

$426

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 $329. Flights from Ontario to Buffalo on a Saturday will generally be more expensive and average around $418. 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 $362 per ticket.

Can stopping save me money on Ontario to Buffalo flights?

You could potentially save up to 42% 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
4,261 reviews
Search Southwest flights
United AirlinesPriceFrom $346Free CancellationRating
7.4
9,768 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
Grand Island
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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