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

American Airlines, United Airlines, and Frontier are the most popular carriers operating from Ontario to Buffalo

What airlines fly to Buffalo?

American Airlines, JetBlue and Delta 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 37% 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 July 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.

$143 Cheap Flights from Ontario to Buffalo in 2025

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Find the cheapest flights from Ontario to Buffalo

Round-trip

One-way

Last minute

Cheap round-trip flights

12:45 pm - 10:46 pmONT-BUF

7h 01m1 stop

5:38 pm - 10:33 pmBUF-ONT

7h 55m1 stop

$287American Airlines

Find Deal

Wed, Sep 3 - Sat, Sep 6

6:56 pm - 4:02 pmONT-BUF

18h 06m1 stop

4:57 pm - 7:54 pmBUF-ONT

29h 57m1 stop

$290Frontier

Find Deal

Thu, Sep 11 - Mon, Sep 15

11:59 pm - 11:56 amONT-BUF

8h 57m1 stop

12:56 pm - 9:59 pmBUF-ONT

12h 03m1 stop

$291JetBlue

Find Deal

Sun, Aug 17 - Wed, Aug 20

6:50 pm - 9:53 amONT-BUF

12h 03m2 stops

5:54 pm - 10:30 pmBUF-ONT

7h 36m1 stop

$292United Airlines

Find Deal

Wed, Sep 3 - Sat, Sep 6

11:55 am - 11:37 pmONT-BUF

8h 42m1 stop

4:30 pm - 10:41 pmBUF-ONT

9h 11m1 stop

$297Delta

Find Deal

Sat, Oct 4 - Wed, Oct 8

11:59 pm - 12:01 pmONT-BUF

9h 02m1 stop

12:56 pm - 10:10 pmBUF-ONT

12h 14m1 stop

$320JetBlue

Find Deal

Tue, Aug 5 - Tue, Aug 12

6:40 am - 4:55 pmONT-BUF

7h 15m1 stop

4:15 pm - 10:50 pmBUF-ONT

9h 35m1 stop

$352Southwest

Find Deal

Wed, Oct 8 - Fri, Oct 10

10:00 pm - 11:01 amONT-BUF

10h 01m1 stop

4:30 pm - 10:41 pmBUF-ONT

9h 11m1 stop

$357Delta

Find Deal

Fri, Oct 3 - Wed, Oct 8

9:00 am - 8:30 pmONT-BUF

8h 30m2 stops

4:15 pm - 11:05 pmBUF-ONT

9h 50m2 stops

$362Southwest

Find Deal

Wed, Oct 8 - Fri, Oct 10

5:10 am - 9:16 pmONT-BUF

13h 06m2 stops

10:55 am - 8:33 pmBUF-ONT

12h 38m2 stops

$397United Airlines

Find Deal

Wed, Sep 3 - Sat, Sep 6

American Airlines flights from Ontario to Buffalo

Our best American Airlines deals on Ontario to Buffalo flight tickets

American Airlines

Sep 3

ONT12:45 pmOntario

7h 01m

1 stop

BUF10:46 pmBuffalo

Sep 6

BUF5:38 pmBuffalo

7h 55m

1 stop

ONT10:33 pmOntario

$287

Find similar

American Airlines

Aug 14

ONT7:02 pmOntario

11h 37m

2 stops

BUF9:39 amBuffalo

Aug 19

BUF2:44 pmBuffalo

9h 26m

1 stop

ONT9:10 pmOntario

$307

Find similar

American Airlines

Aug 14

ONT7:02 pmOntario

11h 37m

2 stops

BUF9:39 amBuffalo

Aug 19

BUF5:30 amBuffalo

11h 09m

2 stops

ONT1:39 pmOntario

$312

Find similar

Frontier flights from Ontario to Buffalo

Our best Frontier deals on Ontario to Buffalo flight tickets

Frontier

Sep 11

ONT6:56 pmOntario

18h 06m

1 stop

BUF4:02 pmBuffalo

Sep 15

BUF4:57 pmBuffalo

29h 57m

1 stop

ONT7:54 pmOntario

$290

Find similar

Frontier

Sep 4

ONT6:56 pmOntario

18h 06m

1 stop

BUF4:02 pmBuffalo

Sep 7

BUF4:57 pmBuffalo

20h 00m

1 stop

ONT9:57 amOntario

$315

Find similar

Frontier

Sep 4

ONT6:56 pmOntario

18h 06m

1 stop

BUF4:02 pmBuffalo

Sep 7

BUF4:57 pmBuffalo

20h 00m

1 stop

ONT9:57 amOntario

$324

Find similar

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 September, then book flights to Buffalo from Ontario during May instead. Flights to Buffalo in May, while not as cheap as those in September, still average around $306.

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 $305. Flights from Ontario to Buffalo on a Sunday will generally be more expensive and average around $383. 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 $301. 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 July 2025, prices for Ontario to Buffalo flights are approximately 12% cheaper 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

Best Price Found	$143
Fastest flight time	6h 21m
Direct flights	None
Airports in Buffalo	1 airport

The best one-way flight to Buffalo from Ontario in the past 72 hours is $143. The best round-trip flight deal from Ontario to Buffalo found on momondo in the last 72 hours is $287.

The fastest flight from Ontario to Buffalo takes 6h 21m

There are no direct flights from Ontario to Buffalo. Popular non-direct route for this connection is Ontario Airport - Buffalo Airport.

There is 1 airport near Buffalo: Buffalo (BUF)

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How far is Ontario to Buffalo by plane?
There are 2161.5 mi between Ontario and Buffalo. 6h 47m 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 July 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 50% of all bookings. The subsequent popular airlines are American Airlines at 34% and United Airlines at 15%.

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 $236	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Southwest	PriceFrom $346	Free Cancellation	Rating 8.0 4,244 reviews	Search Southwest flights
United Airlines	PriceFrom $346	Free Cancellation	Rating 7.4 8,858 reviews	Search United Airlines flights

Batavia

Williamsville

Amherst

Cheektowaga

Tonawanda

Grand Island

Lockport

West Seneca

Orchard Park

East Aurora

Bowmansville

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.