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

United Airlines and Southwest are the most popular carriers 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 December 2025, 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.

$149 Cheap Flights from Ontario to Buffalo in 2025/26

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Find the cheapest flights from Ontario to Buffalo

Round-trip

One-way

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Cheap round-trip flights

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11:59 pm - 3:23 pm

ONT

BUF

12h 24m2 stops

1:31 pm - 7:57 pm

BUF

ONT

9h 26m1 stop

$289American Airlines

Wed, Feb 18 - Tue, Feb 24

11:59 pm - 3:23 pm

ONT

BUF

12h 24m2 stops

5:00 am - 1:54 pm

BUF

ONT

11h 54m2 stops

$294American Airlines

Wed, Feb 18 - Tue, Feb 24

10:20 pm - 11:18 am

ONT

BUF

9h 58m1 stop

6:00 am - 12:02 pm

BUF

ONT

9h 02m1 stop

$302Delta

Wed, Feb 18 - Tue, Feb 24

12:41 pm - 11:56 pm

ONT

BUF

8h 15m1 stop

6:00 am - 11:31 am

BUF

ONT

8h 31m1 stop

$307Delta

Tue, Jan 13 - Tue, Jan 27

10:30 pm - 2:10 pm

ONT

BUF

12h 40m2 stops

6:00 am - 11:31 am

BUF

ONT

8h 31m1 stop

$312Delta

Tue, Jan 13 - Tue, Jan 27

10:30 pm - 2:58 pm

ONT

BUF

13h 28m2 stops

11:51 am - 9:05 pm

BUF

ONT

12h 14m2 stops

$317Delta

Tue, Jan 13 - Tue, Jan 27

10:30 pm - 11:19 am

ONT

BUF

9h 49m1 stop

6:00 am - 11:31 am

BUF

ONT

8h 31m1 stop

$345Delta

Tue, Jan 20 - Thu, Jan 22

10:30 pm - 11:19 am

ONT

BUF

9h 49m1 stop

11:51 am - 9:05 pm

BUF

ONT

12h 14m2 stops

$350Delta

Tue, Jan 20 - Thu, Jan 22

11:25 pm - 11:29 am

ONT

BUF

9h 04m1 stop

12:25 pm - 10:09 pm

BUF

ONT

12h 44m1 stop

$351JetBlue

Mon, May 4 - Thu, May 7

10:30 pm - 11:45 am

ONT

BUF

10h 15m2 stops

11:51 am - 9:05 pm

BUF

ONT

12h 14m2 stops

$355Delta

Tue, Jan 20 - Thu, Jan 22

Delta flights from Ontario to Buffalo

Our best Delta deals on Ontario to Buffalo flight tickets

Delta

Feb 18

ONT10:20 pmOntario

9h 58m

1 stop

BUF11:18 amBuffalo

Feb 24

BUF6:00 amBuffalo

9h 02m

1 stop

ONT12:02 pmOntario

$302

Find similar

Delta

Jan 13

ONT12:41 pmOntario

8h 15m

1 stop

BUF11:56 pmBuffalo

Jan 27

BUF6:00 amBuffalo

8h 31m

1 stop

ONT11:31 amOntario

$307

Find similar

Delta

Jan 13

ONT12:41 pmOntario

8h 15m

1 stop

BUF11:56 pmBuffalo

Jan 27

BUF6:03 amBuffalo

10h 53m

2 stops

ONT1:56 pmOntario

$312

Find similar

JetBlue flights from Ontario to Buffalo

Our best JetBlue deals on Ontario to Buffalo flight tickets

JetBlue

May 4

ONT11:25 pmOntario

9h 04m

1 stop

BUF11:29 amBuffalo

May 7

BUF12:25 pmBuffalo

12h 44m

1 stop

ONT10:09 pmOntario

$351

Find similar

JetBlue

May 8

ONT11:25 pmOntario

9h 04m

1 stop

BUF11:29 amBuffalo

May 16

BUF4:00 pmBuffalo

9h 09m

1 stop

ONT10:09 pmOntario

$366

Find similar

JetBlue

May 14

ONT11:25 pmOntario

9h 04m

1 stop

BUF11:29 amBuffalo

May 19

BUF4:00 pmBuffalo

9h 09m

1 stop

ONT10:09 pmOntario

$411

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Wed 2/18

11:59 pm-3:23 pm

2 stops12h 24m

Buffalo

Tue 2/24

1:31 pm-7:57 pm

1 stop9h 26m

$289

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Wed 2/18

11:59 pm-3:23 pm

2 stops12h 24m

Buffalo

Tue 2/24

5:00 am-1:54 pm

2 stops11h 54m

$294

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Wed 2/18

10:20 pm-11:18 am

1 stop9h 58m

Buffalo

Tue 2/24

6:00 am-12:02 pm

1 stop9h 02m

$302

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Tue 1/13

12:41 pm-11:56 pm

1 stop8h 15m

Buffalo

Tue 1/27

6:00 am-11:31 am

1 stop8h 31m

$307

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Tue 1/13

10:30 pm-2:10 pm

2 stops12h 40m

Buffalo

Tue 1/27

6:00 am-11:31 am

1 stop8h 31m

$312

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Tue 1/13

10:30 pm-2:58 pm

2 stops13h 28m

Buffalo

Tue 1/27

11:51 am-9:05 pm

2 stops12h 14m

$317

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Tue 1/20

10:30 pm-11:19 am

1 stop9h 49m

Buffalo

Thu 1/22

6:00 am-11:31 am

1 stop8h 31m

$345

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Tue 1/20

10:30 pm-11:19 am

1 stop9h 49m

Buffalo

Thu 1/22

11:51 am-9:05 pm

2 stops12h 14m

$350

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Mon 5/4

11:25 pm-11:29 am

1 stop9h 04m

Buffalo

Thu 5/7

12:25 pm-10:09 pm

1 stop12h 44m

$351

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Tue 1/20

10:30 pm-11:45 am

2 stops10h 15m

Buffalo

Thu 1/22

11:51 am-9:05 pm

2 stops12h 14m

$355

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 Saturday is the least expensive day to fly to Buffalo. Tickets to fly out on this day can be as low as $297. Flights from Ontario to Buffalo on a Sunday will generally be more expensive and average around $394. 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 $288. Flying to Buffalo at noon is an ideal time because this is during off-peak travel hours. In the morning is when there is more demand to fly to Buffalo, so prices are often more expensive at around $360 per ticket.

How have Ontario to Buffalo flight prices changed over time?

As of December 2025, prices for Ontario to Buffalo flights are approximately 144% more expensive when compared to flights at the same time last year.

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?
As of December 2025, 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 60% of all bookings. The subsequent popular airlines are United Airlines at 26% and American Airlines at 14%.

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 11,054 reviews	Search American Airlines flights
United Airlines	PriceFrom $297	Free Cancellation	Rating 7.4 9,091 reviews	Search United Airlines flights
Southwest	PriceFrom $353	Free Cancellation	Rating 7.9 4,250 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.