What is the cheapest airline that flies from Ontario to Buffalo?

United Airlines is the most popular carrier operating from Ontario to Buffalo

What airlines fly to Buffalo?

American Airlines, JetBlue and Southwest are the top three most popular airlines that fly to Buffalo from Ontario according to our data. American Airlines is the first choice among our users, with 31% of people opting to fly with this airline when traveling to Buffalo. Keep in mind that there are 6 different airlines that fly to Buffalo on a routine basis, so you have a few additional options to choose from.

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?

As of January 2026, there are 3 operators available to choose from 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.

$155 Cheap Flights from Ontario to Buffalo in 2026

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Find the cheapest flights from Ontario to Buffalo

Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

10:20 pm - 11:00 am

ONT

BUF

9h 40m

1 stop

6:00 am - 12:02 pm

BUF

ONT

9h 02m

1 stop

$307Delta

Wed, Feb 18 - Tue, Feb 24

10:20 pm - 11:00 am

ONT

BUF

9h 40m

1 stop

6:15 am - 1:54 pm

BUF

ONT

10h 39m

2 stops

$312Delta

Wed, Feb 18 - Tue, Feb 24

7:05 pm - 11:43 am

ONT

BUF

13h 38m

2 stops

5:24 am - 1:49 pm

BUF

ONT

11h 25m

2 stops

$318American Airlines

Wed, Feb 18 - Tue, Feb 24

1:45 pm - 10:59 pm

ONT

BUF

6h 14m

1 stop

8:25 am - 12:43 pm

BUF

ONT

7h 18m

1 stop

$372United Airlines

Wed, Feb 18 - Sun, Feb 22

5:45 pm - 8:05 am

ONT

BUF

11h 20m

2 stops

5:40 am - 10:35 am

BUF

ONT

7h 55m

1 stop

$377Southwest

Wed, Feb 18 - Sun, Feb 22

12:50 pm - 11:46 pm

ONT

BUF

7h 56m

1 stop

10:13 am - 8:58 pm

BUF

ONT

13h 45m

2 stops

$380Delta

Tue, Apr 7 - Tue, Apr 14

10:59 pm - 11:40 am

ONT

BUF

9h 41m

2 stops

4:57 pm - 10:09 pm

BUF

ONT

8h 12m

1 stop

$382Delta

Tue, May 12 - Tue, May 19

5:45 pm - 8:05 am

ONT

BUF

11h 20m

2 stops

5:40 am - 12:00 pm

BUF

ONT

9h 20m

2 stops

$383Southwest

Wed, Feb 18 - Sun, Feb 22

12:00 pm - 11:57 pm

ONT

BUF

8h 57m

1 stop

4:57 pm - 10:09 pm

BUF

ONT

8h 12m

1 stop

$397Delta

Wed, May 13 - Wed, May 20

1:15 pm - 11:26 pm

ONT

BUF

7h 11m

1 stop

2:08 pm - 9:05 pm

BUF

ONT

9h 57m

1 stop

$398Delta

Fri, Feb 13 - Sat, Feb 14

United Airlines flights from Ontario to Buffalo

Our best United Airlines deals on Ontario to Buffalo flight tickets

United Airlines

Feb 18

ONT1:45 pmOntario

6h 14m

1 stop

BUF10:59 pmBuffalo

Feb 22

BUF8:25 amBuffalo

7h 18m

1 stop

ONT12:43 pmOntario

$372

United Airlines

Feb 14

ONT1:45 pmOntario

6h 14m

1 stop

BUF10:59 pmBuffalo

Feb 18

BUF6:00 amBuffalo

14h 41m

2 stops

ONT5:41 pmOntario

$412

United Airlines

Feb 14

ONT1:45 pmOntario

6h 14m

1 stop

BUF10:59 pmBuffalo

Feb 18

BUF6:00 amBuffalo

14h 41m

3 stops

ONT5:41 pmOntario

$418

Southwest flights from Ontario to Buffalo

Our best Southwest deals on Ontario to Buffalo flight tickets

Southwest

Feb 18

ONT5:45 pmOntario

11h 20m

2 stops

BUF8:05 amBuffalo

Feb 22

BUF5:40 amBuffalo

7h 55m

1 stop

ONT10:35 amOntario

$377

Southwest

Feb 18

ONT5:45 pmOntario

11h 20m

2 stops

BUF8:05 amBuffalo

Feb 22

BUF5:40 amBuffalo

9h 20m

2 stops

ONT12:00 pmOntario

$383

Southwest

Feb 9

ONT5:30 amOntario

6h 55m

1 stop

BUF3:25 pmBuffalo

Feb 16

BUF3:50 pmBuffalo

9h 45m

1 stop

ONT10:35 pmOntario

$421

Fly from

Fly to

Route

Depart

Return

Price

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Wed 2/18

10:20 pm-11:00 am

1 stop9h 40m

Buffalo

Tue 2/24

6:00 am-12:02 pm

1 stop9h 02m

$307

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Wed 2/18

10:20 pm-11:00 am

1 stop9h 40m

Buffalo

Tue 2/24

6:15 am-1:54 pm

2 stops10h 39m

$312

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Wed 2/18

7:05 pm-11:43 am

2 stops13h 38m

Buffalo

Tue 2/24

5:24 am-1:49 pm

2 stops11h 25m

$318

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Wed 2/18

1:45 pm-10:59 pm

1 stop6h 14m

Buffalo

Sun 2/22

8:25 am-12:43 pm

1 stop7h 18m

$372

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Wed 2/18

5:45 pm-8:05 am

2 stops11h 20m

Buffalo

Sun 2/22

5:40 am-10:35 am

1 stop7h 55m

$377

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Tue 4/7

12:50 pm-11:46 pm

1 stop7h 56m

Buffalo

Tue 4/14

10:13 am-8:58 pm

2 stops13h 45m

$380

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Tue 5/12

10:59 pm-11:40 am

2 stops9h 41m

Buffalo

Tue 5/19

4:57 pm-10:09 pm

1 stop8h 12m

$382

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Wed 2/18

5:45 pm-8:05 am

2 stops11h 20m

Buffalo

Sun 2/22

5:40 am-12:00 pm

2 stops9h 20m

$383

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Wed 5/13

12:00 pm-11:57 pm

1 stop8h 57m

Buffalo

Wed 5/20

4:57 pm-10:09 pm

1 stop8h 12m

$397

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Fri 2/13

1:15 pm-11:26 pm

1 stop7h 11m

Buffalo

Sat 2/14

2:08 pm-9:05 pm

1 stop9h 57m

$398

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

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 $271. 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 $340 per ticket.

Can stopping save me money on Ontario to Buffalo flights?

You could potentially save up to 74% 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?
As of January 2026, there are 3 operators available to choose from 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?
momondo data reveals that the most frequently booked airline on the route from Ontario to Buffalo is Southwest, representing 62% of all bookings. The subsequent popular airlines are United Airlines at 24% and American Airlines at 13%.

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 Airlines	PriceFrom $168	Free Cancellation	Rating 7.2 11,108 reviews	Search American Airlines flights
United Airlines	PriceFrom $297	Free Cancellation	Rating 7.4 9,143 reviews	Search United Airlines flights
Southwest	PriceFrom $353	Free Cancellation	Rating 8.0 4,253 reviews	Search Southwest flights

Batavia

Cheektowaga

Amherst

Tonawanda

Grand Island

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.