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

Frontier, Delta, and American Airlines 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 33% 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 November 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.

$102 Cheap Flights from Buffalo to Ontario in 2025/26

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Buffalo to Los Angeles

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:12 am - 4:01 pmBUF-ONT

12h 49m2 stops

10:34 pm - 11:03 amONT-BUF

9h 29m1 stop

$312American Airlines

Find Deal

Tue, Dec 2 - Sat, Dec 6

6:12 am - 4:01 pmBUF-ONT

12h 49m2 stops

6:00 am - 9:40 pmONT-BUF

12h 40m2 stops

$317American Airlines

Find Deal

Tue, Dec 2 - Sat, Dec 6

6:12 am - 11:53 amBUF-ONT

8h 41m1 stop

10:34 pm - 11:03 amONT-BUF

9h 29m1 stop

$347American Airlines

Find Deal

Tue, Dec 2 - Sat, Dec 6

7:27 am - 4:02 pmBUF-ONT

11h 35m2 stops

7:57 pm - 11:07 amONT-BUF

12h 10m2 stops

$382American Airlines

Find Deal

Wed, Dec 17 - Sun, Jan 4

2:05 pm - 6:15 pmBUF-ONT

7h 10m1 stop

1:40 pm - 11:55 pmONT-BUF

7h 15m1 stop

$448Southwest

Find Deal

Wed, Dec 17 - Sun, Jan 4

1:50 pm - 10:49 pmBUF-ONT

11h 59m2 stops

6:39 pm - 10:49 amONT-BUF

13h 10m2 stops

$453United Airlines

Find Deal

Sat, Dec 13 - Mon, Jan 12

9:20 am - 3:55 pmBUF-ONT

9h 35m1 stop

9:55 pm - 10:15 amONT-BUF

9h 20m2 stops

$462Southwest

Find Deal

Sat, Mar 28 - Thu, Apr 9

5:35 pm - 10:25 pmBUF-ONT

7h 50m1 stop

6:39 pm - 10:49 amONT-BUF

13h 10m2 stops

$470United Airlines

Find Deal

Wed, Dec 31 - Thu, Jan 8

2:00 pm - 9:07 pmBUF-ONT

10h 07m1 stop

12:00 pm - 11:58 pmONT-BUF

8h 58m1 stop

$503Delta

Find Deal

Sat, Feb 21 - Thu, Apr 30

6:00 am - 11:59 amBUF-ONT

8h 59m1 stop

10:20 pm - 11:19 amONT-BUF

9h 59m1 stop

$559Delta

Find Deal

Sun, Mar 1 - Thu, Mar 5

American Airlines flights from Buffalo to Ontario

Our best American Airlines deals on Buffalo to Ontario flight tickets

American Airlines

Dec 2

BUF6:12 amBuffalo

12h 49m

2 stops

ONT4:01 pmOntario

Dec 6

ONT10:34 pmOntario

9h 29m

1 stop

BUF11:03 amBuffalo

$312

Find similar

American Airlines

Dec 2

BUF6:12 amBuffalo

12h 49m

2 stops

ONT4:01 pmOntario

Dec 6

ONT6:00 amOntario

12h 40m

2 stops

BUF9:40 pmBuffalo

$317

Find similar

American Airlines

Dec 2

BUF6:12 amBuffalo

8h 41m

1 stop

ONT11:53 amOntario

Dec 6

ONT10:34 pmOntario

9h 29m

1 stop

BUF11:03 amBuffalo

$347

Find similar

Delta flights from Buffalo to Ontario

Our best Delta deals on Buffalo to Ontario flight tickets

Delta

Feb 21

BUF2:00 pmBuffalo

10h 07m

1 stop

ONT9:07 pmOntario

Apr 30

ONT12:00 pmOntario

8h 58m

1 stop

BUF11:58 pmBuffalo

$503

Find similar

Delta

Mar 1

BUF6:00 amBuffalo

8h 59m

1 stop

ONT11:59 amOntario

Mar 5

ONT10:20 pmOntario

9h 59m

1 stop

BUF11:19 amBuffalo

$559

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Tue 12/2

6:12 am-4:01 pm

2 stops12h 49m

Ontario

Sat 12/6

10:34 pm-11:03 am

1 stop9h 29m

$312

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Tue 12/2

6:12 am-4:01 pm

2 stops12h 49m

Ontario

Sat 12/6

6:00 am-9:40 pm

2 stops12h 40m

$317

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Tue 12/2

6:12 am-11:53 am

1 stop8h 41m

Ontario

Sat 12/6

10:34 pm-11:03 am

1 stop9h 29m

$347

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Wed 12/17

7:27 am-4:02 pm

2 stops11h 35m

Ontario

Sun 1/4

7:57 pm-11:07 am

2 stops12h 10m

$382

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Wed 12/17

2:05 pm-6:15 pm

1 stop7h 10m

Ontario

Sun 1/4

1:40 pm-11:55 pm

1 stop7h 15m

$448

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Sat 12/13

1:50 pm-10:49 pm

2 stops11h 59m

Ontario

Mon 1/12

6:39 pm-10:49 am

2 stops13h 10m

$453

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Sat 3/28

9:20 am-3:55 pm

1 stop9h 35m

Ontario

Thu 4/9

9:55 pm-10:15 am

2 stops9h 20m

$462

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Wed 12/31

5:35 pm-10:25 pm

1 stop7h 50m

Ontario

Thu 1/8

6:39 pm-10:49 am

2 stops13h 10m

$470

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Sat 2/21

2:00 pm-9:07 pm

1 stop10h 07m

Ontario

Thu 4/30

12:00 pm-11:58 pm

1 stop8h 58m

$503

BuffaloOntario

BUF - ONT

BUFONT

Buffalo

Sun 3/1

6:00 am-11:59 am

1 stop8h 59m

Ontario

Thu 3/5

10:20 pm-11:19 am

1 stop9h 59m

$559

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 $411.

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.

Search flight deals

How far is Buffalo to Ontario by plane?
Ontario is 2161.5 mi away from Buffalo. 7h 10m 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 November 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 (74% of total bookings). The next most popular airline is American Airlines (26%).

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 11,040 reviews		Search American Airlines flights
Southwest	PriceFrom $367	Free Cancellation	Rating 8.0 4,239 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.