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Cheap flights from Ontario to Buffalo from $155

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 6/9. 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.
Southwest Logo
11:55 pm - 10:15 am
ONT
-
BUF
7h 20m
1 stop
Southwest Logo
7:50 pm - 12:10 am
BUF
-
ONT
7h 20m
1 stop
$297Southwest
Wed, May 6 - Sun, May 10
Southwest Logo
11:55 pm - 10:15 am
ONT
-
BUF
7h 20m
1 stop
Southwest Logo
4:05 pm - 11:35 pm
BUF
-
ONT
10h 30m
2 stops
$302Southwest
Wed, May 6 - Sun, May 10
Southwest Logo
9:55 pm - 10:15 am
ONT
-
BUF
9h 20m
2 stops
Southwest Logo
3:10 pm - 9:50 pm
BUF
-
ONT
9h 40m
2 stops
$307Southwest
Thu, May 7 - Tue, May 12
Delta Logo
10:15 pm - 11:01 am
ONT
-
BUF
9h 46m
1 stop
Delta Logo
6:15 am - 10:57 am
BUF
-
ONT
7h 42m
1 stop
$317Delta
Tue, May 5 - Tue, May 12
Delta Logo
10:15 pm - 2:52 pm
ONT
-
BUF
13h 37m
2 stops
Delta Logo
6:15 am - 10:57 am
BUF
-
ONT
7h 42m
1 stop
$322Delta
Mon, May 4 - Sat, May 9
JetBlue Logo
10:00 pm - 8:58 am
ONT
-
BUF
7h 58m
1 stop
JetBlue Logo
2:41 pm - 8:45 pm
BUF
-
ONT
9h 04m
1 stop
$329JetBlue
Tue, May 26 - Wed, Jun 3
American Airlines Logo
7:35 pm - 10:18 am
ONT
-
BUF
11h 43m
2 stops
American Airlines Logo
10:44 am - 6:24 pm
BUF
-
ONT
10h 40m
2 stops
$330American Airlines
Fri, May 8 - Tue, May 12
Southwest Logo
9:45 pm - 10:20 am
ONT
-
BUF
9h 35m
2 stops
Southwest Logo
3:10 pm - 9:30 pm
BUF
-
ONT
9h 20m
2 stops
$338Southwest
Tue, May 26 - Wed, Jun 3
American Airlines Logo
11:59 pm - 1:05 pm
ONT
-
BUF
10h 06m
2 stops
American Airlines Logo
6:00 am - 4:22 pm
BUF
-
ONT
13h 22m
2 stops
$341American Airlines
Wed, Apr 15 - Wed, Apr 22
Southwest Logo
11:55 pm - 10:20 am
ONT
-
BUF
7h 25m
1 stop
Southwest Logo
12:40 pm - 8:40 pm
BUF
-
ONT
11h 00m
2 stops
$352Southwest
Mon, May 25 - Mon, Jun 1

Southwest flights from Ontario to Buffalo

Our best Southwest deals on Ontario to Buffalo flight tickets
Southwest
May 6
ONT11:55 pmOntario
7h 20m
1 stop
BUF10:15 amBuffalo
May 10
BUF7:50 pmBuffalo
7h 20m
1 stop
ONT12:10 amOntario
$297
Southwest
May 6
ONT11:55 pmOntario
7h 20m
1 stop
BUF10:15 amBuffalo
May 10
BUF4:05 pmBuffalo
10h 30m
2 stops
ONT11:35 pmOntario
$302
Southwest
May 7
ONT9:55 pmOntario
9h 20m
2 stops
BUF10:15 amBuffalo
May 12
BUF3:10 pmBuffalo
9h 40m
2 stops
ONT9:50 pmOntario
$307

Delta flights from Ontario to Buffalo

Our best Delta deals on Ontario to Buffalo flight tickets
Delta
May 5
ONT10:15 pmOntario
9h 46m
1 stop
BUF11:01 amBuffalo
May 9
BUF6:15 amBuffalo
7h 42m
1 stop
ONT10:57 amOntario
$317
Delta
May 4
ONT10:15 pmOntario
13h 37m
2 stops
BUF2:52 pmBuffalo
May 9
BUF6:15 amBuffalo
7h 42m
1 stop
ONT10:57 amOntario
$322
Delta
May 5
ONT10:15 pmOntario
13h 37m
2 stops
BUF2:52 pmBuffalo
May 12
BUF6:15 amBuffalo
7h 42m
1 stop
ONT10:57 amOntario
$393

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 March 17, 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
Quickest round-trip

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Wed 5/6

11:55 pm-10:15 am

1 stop7h 20m

Buffalo

Sun 5/10

7:50 pm-12:10 am

1 stop7h 20m

$297

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Wed 5/6

11:55 pm-10:15 am

1 stop7h 20m

Buffalo

Sun 5/10

4:05 pm-11:35 pm

2 stops10h 30m

$302

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Thu 5/7

9:55 pm-10:15 am

2 stops9h 20m

Buffalo

Tue 5/12

3:10 pm-9:50 pm

2 stops9h 40m

$307

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Tue 5/5

10:15 pm-11:01 am

1 stop9h 46m

Buffalo

Tue 5/12

6:15 am-10:57 am

1 stop7h 42m

$317

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Mon 5/4

10:15 pm-2:52 pm

2 stops13h 37m

Buffalo

Sat 5/9

6:15 am-10:57 am

1 stop7h 42m

$322

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Tue 5/26

10:00 pm-8:58 am

1 stop7h 58m

Buffalo

Wed 6/3

2:41 pm-8:45 pm

1 stop9h 04m

$329

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Fri 5/8

7:35 pm-10:18 am

2 stops11h 43m

Buffalo

Tue 5/12

10:44 am-6:24 pm

2 stops10h 40m

$330

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Tue 5/26

9:45 pm-10:20 am

2 stops9h 35m

Buffalo

Wed 6/3

3:10 pm-9:30 pm

2 stops9h 20m

$338

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Wed 4/15

11:59 pm-1:05 pm

2 stops10h 06m

Buffalo

Wed 4/22

6:00 am-4:22 pm

2 stops13h 22m

$341

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Mon 5/25

11:55 pm-10:20 am

1 stop7h 25m

Buffalo

Mon 6/1

12:40 pm-8:40 pm

2 stops11h 00m

$352

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 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 $355. 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 47% 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 20m

Direct flights

None
The fastest flight from Ontario to Buffalo takes 6h 20m
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 20m 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
7.1
11,468 reviews
Search American Airlines flights
SouthwestPriceFrom $286Free CancellationRating
8.0
4,320 reviews
Search Southwest flights
United AirlinesPriceFrom $297Free CancellationRating
7.4
9,435 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
Grand Island
Tonawanda
Orchard Park
Williamsville
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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