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

JetBlue, Delta, and Frontier are the most popular carriers operating from Buffalo to Ontario

What airlines fly to Ontario?

American Airlines, Southwest and JetBlue are the top three most popular airlines that fly to Ontario from Buffalo according to our data. American Airlines is the first choice among our users, with 36% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 6 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Buffalo Airport to Ontario Airport?

Prices for flights from Buffalo Airport to Ontario Airport are updated daily.

How many operators does momondo search for flights from Buffalo Airport to Ontario Airport?

As of September 2025, there are 2 operators available to choose from for flights from Buffalo Airport to Ontario Airport.

How old do you have to be to fly from Buffalo Airport to Ontario Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Buffalo Airport to Ontario Airport.

What documentation or ID do you need to fly to Ontario Airport?

The necessary travel and health documents for your Ontario Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$148 Cheap Flights from Buffalo to Ontario in 2025/26

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Find the cheapest flights from Buffalo to Los Angeles

Round-trip

One-way

Last minute

Cheap round-trip flights

4:57 pm - 7:54 pmBUF-ONT

29h 57m1 stop

8:59 pm - 4:03 pmONT-BUF

16h 04m1 stop

$152Frontier

Find Deal

Fri, Oct 3 - Sun, Oct 5

12:15 pm - 11:50 pmBUF-ONT

14h 35m2 stops

6:53 am - 4:29 pmONT-BUF

6h 36m1 stop

$222Frontier

Find Deal

Thu, Oct 23 - Mon, Oct 27

12:09 pm - 7:35 pmBUF-ONT

10h 26m1 stop

11:45 am - 11:55 pmONT-BUF

9h 10m1 stop

$307Delta

Find Deal

Wed, Dec 10 - Wed, Dec 17

4:35 pm - 10:22 pmBUF-ONT

8h 47m1 stop

10:00 pm - 11:01 amONT-BUF

10h 01m1 stop

$329Delta

Find Deal

Tue, Oct 21 - Mon, Oct 27

6:02 pm - 10:42 pmBUF-ONT

7h 40m1 stop

12:48 pm - 10:28 pmONT-BUF

6h 40m1 stop

$366American Airlines

Find Deal

Fri, Oct 24 - Thu, Oct 30

10:55 am - 8:24 pmBUF-ONT

12h 29m2 stops

6:38 pm - 9:48 amONT-BUF

12h 10m2 stops

$375United Airlines

Find Deal

Thu, Oct 23 - Mon, Oct 27

6:00 am - 1:30 pmBUF-ONT

10h 30m1 stop

5:00 am - 2:15 pmONT-BUF

6h 15m1 stop

$397Southwest

Find Deal

Wed, Oct 22 - Sat, Nov 29

5:55 pm - 10:30 pmBUF-ONT

7h 35m1 stop

1:33 pm - 10:52 pmONT-BUF

6h 19m1 stop

$407United Airlines

Find Deal

Wed, Oct 22 - Wed, Oct 29

6:12 am - 2:04 pmBUF-ONT

10h 52m1 stop

10:34 pm - 11:02 amONT-BUF

9h 28m1 stop

$437American Airlines

Find Deal

Fri, Nov 21 - Fri, Nov 28

11:10 am - 6:30 pmBUF-ONT

10h 20m2 stops

5:00 am - 2:15 pmONT-BUF

6h 15m1 stop

$452Southwest

Find Deal

Wed, Oct 22 - Sat, Nov 29

Frontier flights from Buffalo to Ontario

Our best Frontier deals on Buffalo to Ontario flight tickets

Frontier

Oct 3

BUF4:57 pmBuffalo

29h 57m

1 stop

ONT7:54 pmOntario

Oct 5

ONT8:59 pmOntario

16h 04m

1 stop

BUF4:03 pmBuffalo

$152

Find similar

Frontier

Oct 23

BUF12:15 pmBuffalo

14h 35m

2 stops

ONT11:50 pmOntario

Oct 27

ONT6:53 amOntario

6h 36m

1 stop

BUF4:29 pmBuffalo

$222

Find similar

Frontier

Oct 20

BUF5:24 pmBuffalo

9h 26m

1 stop

ONT11:50 pmOntario

Oct 27

ONT6:53 amOntario

6h 36m

1 stop

BUF4:29 pmBuffalo

$242

Find similar

United Airlines flights from Buffalo to Ontario

Our best United Airlines deals on Buffalo to Ontario flight tickets

United Airlines

Oct 23

BUF10:55 amBuffalo

12h 29m

2 stops

ONT8:24 pmOntario

Oct 27

ONT6:38 pmOntario

12h 10m

2 stops

BUF9:48 amBuffalo

$375

Find similar

United Airlines

Oct 22

BUF5:55 pmBuffalo

7h 35m

1 stop

ONT10:30 pmOntario

Oct 29

ONT1:33 pmOntario

6h 19m

1 stop

BUF10:52 pmBuffalo

$407

Find similar

United Airlines

Oct 11

BUF8:25 amBuffalo

7h 26m

1 stop

ONT12:51 pmOntario

Oct 18

ONT5:05 amOntario

8h 48m

2 stops

BUF4:53 pmBuffalo

$412

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Fri 10/3

4:57 pm-7:54 pm

1 stop29h 57m

Ontario

Sun 10/5

8:59 pm-4:03 pm

1 stop16h 04m

$152

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Thu 10/23

12:15 pm-11:50 pm

2 stops14h 35m

Ontario

Mon 10/27

6:53 am-4:29 pm

1 stop6h 36m

$222

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Wed 12/10

12:09 pm-7:35 pm

1 stop10h 26m

Ontario

Wed 12/17

11:45 am-11:55 pm

1 stop9h 10m

$307

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Tue 10/21

4:35 pm-10:22 pm

1 stop8h 47m

Ontario

Mon 10/27

10:00 pm-11:01 am

1 stop10h 01m

$329

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Fri 10/24

6:02 pm-10:42 pm

1 stop7h 40m

Ontario

Thu 10/30

12:48 pm-10:28 pm

1 stop6h 40m

$366

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Thu 10/23

10:55 am-8:24 pm

2 stops12h 29m

Ontario

Mon 10/27

6:38 pm-9:48 am

2 stops12h 10m

$375

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Wed 10/22

6:00 am-1:30 pm

1 stop10h 30m

Ontario

Sat 11/29

5:00 am-2:15 pm

1 stop6h 15m

$397

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Wed 10/22

5:55 pm-10:30 pm

1 stop7h 35m

Ontario

Wed 10/29

1:33 pm-10:52 pm

1 stop6h 19m

$407

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Fri 11/21

6:12 am-2:04 pm

1 stop10h 52m

Ontario

Fri 11/28

10:34 pm-11:02 am

1 stop9h 28m

$437

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Wed 10/22

11:10 am-6:30 pm

2 stops10h 20m

Ontario

Sat 11/29

5:00 am-2:15 pm

1 stop6h 15m

$452

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 Buffalo to Ontario

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 Ontario?

In general, October is the cheapest month to fly from Buffalo to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $306. If you aren’t able to travel during the month of October, then book flights to Ontario from Buffalo during September instead. Flights to Ontario in September, while not as cheap as those in October, still average around $371.

What is the cheapest day to depart on your flight to Ontario?

The cheapest day to depart on your flight to Ontario is on a Saturday when prices can be found for as low as $286. This is often the case because there is less demand to fly during this day of the week. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Buffalo to Ontario for around $626.

What is the cheapest time of day to depart on your flight to Ontario?

In the evening is the cheapest time of day to fly from Buffalo to Ontario when you can find flight prices for as low as $247. Flying to Ontario in the evening is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $832 on average. Flights to Ontario from Buffalo at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

When to book flights from Buffalo to Ontario

Are you open to changing your travel dates? Check out the ideal times to fly from Buffalo to Ontario according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Buffalo to Ontario (BUF to ONT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Buffalo to Ontario

Direct flights	None

There are no direct flights from Buffalo to Ontario. There are no popular flight routes from Buffalo to Ontario.

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How far is Buffalo to Ontario by plane?
Ontario is 2161.5 mi away from Buffalo. 7h 23m is a normal flight duration for this route.
When did momondo last update prices for flights from Buffalo Airport to Ontario Airport?
Prices for flights from Buffalo Airport to Ontario Airport are updated daily.
How many operators does momondo search for flights from Buffalo Airport to Ontario Airport?
As of September 2025, there are 2 operators available to choose from for flights from Buffalo Airport to Ontario Airport.
How old do you have to be to fly from Buffalo Airport to Ontario Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Buffalo Airport to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The necessary travel and health documents for your Ontario Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Buffalo to Ontario?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Buffalo to Ontario is Southwest (69% of total bookings). The next most popular airline is American Airlines (31%).

Best airlines flying from Buffalo to Ontario

Compare and see reviews for airlines that fly from Buffalo to Ontario with momondo

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom $296	Free Cancellation	Rating 7.2 10,000 reviews		Search American Airlines flights
Southwest	PriceFrom $366	Free Cancellation	Rating 8.0 4,242 reviews		Search Southwest flights

Why use momondo?

Why should I use momondo to find a flight deal from Buffalo to Ontario?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Buffalo to Ontario for you.

Can I find flights from Buffalo to Ontario with flexible booking policies on momondo?

Yes. All flights to Ontario from Buffalo on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Buffalo to Ontario?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Ontario from Buffalo.

I’m not ready to book a flight from Buffalo to Ontario right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Buffalo to Ontario 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.