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 34% 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.

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

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

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 December 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.

$138 Cheap Flights from Buffalo to Ontario in 2025/26

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Cheap round-trip flights

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4:00 pm - 10:09 pm

BUF

ONT

9h 09m1 stop

11:25 pm - 11:10 am

ONT

BUF

8h 45m1 stop

$327JetBlue

Wed, May 6 - Sat, May 9

12:25 pm - 10:09 pm

BUF

ONT

12h 44m1 stop

11:25 pm - 11:29 am

ONT

BUF

9h 04m1 stop

$351JetBlue

Fri, May 1 - Mon, May 4

5:50 am - 10:40 am

BUF

ONT

7h 50m1 stop

5:40 am - 3:25 pm

ONT

BUF

6h 45m1 stop

$385Southwest

Thu, Feb 5 - Mon, Feb 9

3:35 pm - 10:05 pm

BUF

ONT

9h 30m1 stop

7:55 pm - 8:05 am

ONT

BUF

9h 10m2 stops

$390Southwest

Thu, Feb 5 - Mon, Feb 9

6:10 am - 4:05 pm

BUF

ONT

12h 55m2 stops

7:55 pm - 8:05 am

ONT

BUF

9h 10m2 stops

$395Southwest

Thu, Feb 5 - Mon, Feb 9

6:00 am - 11:31 am

BUF

ONT

8h 31m1 stop

10:30 pm - 11:19 am

ONT

BUF

9h 49m1 stop

$411Delta

Thu, Jan 29 - Sun, Feb 1

1:20 pm - 8:45 pm

BUF

ONT

10h 25m2 stops

5:40 am - 3:25 pm

ONT

BUF

6h 45m1 stop

$416Southwest

Thu, Jan 29 - Sun, Feb 1

10:45 am - 10:53 pm

BUF

ONT

15h 08m2 stops

5:05 am - 8:29 pm

ONT

BUF

12h 24m2 stops

$417United Airlines

Tue, Feb 3 - Tue, Feb 10

1:20 pm - 8:45 pm

BUF

ONT

10h 25m2 stops

6:30 am - 6:40 pm

ONT

BUF

9h 10m2 stops

$421Southwest

Thu, Jan 29 - Sun, Feb 1

11:24 am - 8:58 pm

BUF

ONT

12h 34m2 stops

5:05 am - 8:29 pm

ONT

BUF

12h 24m2 stops

$429United Airlines

Sat, Jan 17 - Sun, Jan 18

Delta flights from Buffalo to Ontario

Our best Delta deals on Buffalo to Ontario flight tickets

Delta

Jan 29

BUF6:00 amBuffalo

8h 31m

1 stop

ONT11:31 amOntario

Feb 1

ONT10:30 pmOntario

9h 49m

1 stop

BUF11:19 amBuffalo

$411

Find similar

Delta

Mar 7

BUF2:08 pmBuffalo

9h 57m

1 stop

ONT9:05 pmOntario

Apr 1

ONT10:25 pmOntario

9h 36m

1 stop

BUF11:01 amBuffalo

$437

Find similar

Delta

Mar 7

BUF11:52 amBuffalo

12h 13m

2 stops

ONT9:05 pmOntario

Apr 1

ONT10:25 pmOntario

9h 36m

1 stop

BUF11:01 amBuffalo

$482

Find similar

United Airlines flights from Buffalo to Ontario

Our best United Airlines deals on Buffalo to Ontario flight tickets

United Airlines

Feb 3

BUF10:45 amBuffalo

15h 08m

2 stops

ONT10:53 pmOntario

Feb 10

ONT5:05 amOntario

12h 24m

2 stops

BUF8:29 pmBuffalo

$417

Find similar

United Airlines

Jan 17

BUF11:24 amBuffalo

12h 34m

2 stops

ONT8:58 pmOntario

Jan 18

ONT5:05 amOntario

12h 24m

2 stops

BUF8:29 pmBuffalo

$429

Find similar

United Airlines

Jan 22

BUF8:30 amBuffalo

12h 13m

2 stops

ONT5:43 pmOntario

Jan 24

ONT5:05 amOntario

12h 24m

2 stops

BUF8:29 pmBuffalo

$456

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Wed 5/6

4:00 pm-10:09 pm

1 stop9h 09m

Ontario

Sat 5/9

11:25 pm-11:10 am

1 stop8h 45m

$327

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Fri 5/1

12:25 pm-10:09 pm

1 stop12h 44m

Ontario

Mon 5/4

11:25 pm-11:29 am

1 stop9h 04m

$351

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Thu 2/5

5:50 am-10:40 am

1 stop7h 50m

Ontario

Mon 2/9

5:40 am-3:25 pm

1 stop6h 45m

$385

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Thu 2/5

3:35 pm-10:05 pm

1 stop9h 30m

Ontario

Mon 2/9

7:55 pm-8:05 am

2 stops9h 10m

$390

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Thu 2/5

6:10 am-4:05 pm

2 stops12h 55m

Ontario

Mon 2/9

7:55 pm-8:05 am

2 stops9h 10m

$395

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Thu 1/29

6:00 am-11:31 am

1 stop8h 31m

Ontario

Sun 2/1

10:30 pm-11:19 am

1 stop9h 49m

$411

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Thu 1/29

1:20 pm-8:45 pm

2 stops10h 25m

Ontario

Sun 2/1

5:40 am-3:25 pm

1 stop6h 45m

$416

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Tue 2/3

10:45 am-10:53 pm

2 stops15h 08m

Ontario

Tue 2/10

5:05 am-8:29 pm

2 stops12h 24m

$417

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Thu 1/29

1:20 pm-8:45 pm

2 stops10h 25m

Ontario

Sun 2/1

6:30 am-6:40 pm

2 stops9h 10m

$421

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Sat 1/17

11:24 am-8:58 pm

2 stops12h 34m

Ontario

Sun 1/18

5:05 am-8:29 pm

2 stops12h 24m

$429

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 January instead. Flights to Ontario in January, while not as cheap as those in October, still average around $401.

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.

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

Fastest flight time	7h 31m
Direct flights	None

The fastest flight from Buffalo to Ontario takes 7h 31m

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 31m 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 December 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 (68% of total bookings). The next most popular airline is American Airlines (32%).

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 $286	Free Cancellation	Rating 7.2 11,072 reviews		Search American Airlines flights
Southwest	PriceFrom $306	Free Cancellation	Rating 8.0 4,256 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.