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Cheap flights from Ontario to Buffalo from $134

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Buffalo departing on 9/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Ontario to Buffalo

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
1:18 pm - 10:37 pmONT  Ontario-BUF Buffalo
6h 19m1 stop Denver Intl
United Airlines Logo
10:30 am - 8:01 pmBUF  Buffalo-ONT Ontario
12h 31m2 stops Chicago O'Hare Intl San Francisco
$280United Airlines
Sat, Sep 19 - Wed, Sep 23
American Airlines Logo
10:25 am - 10:59 pmONT  Ontario-BUF Buffalo
9h 34m1 stop Dallas/Fort Worth
American Airlines Logo
7:15 am - 1:25 pmBUF  Buffalo-ONT Ontario
9h 10m1 stop Dallas/Fort Worth
$286American Airlines
Sat, Sep 19 - Wed, Sep 23
American Airlines Logo
12:37 pm - 10:59 pmONT  Ontario-BUF Buffalo
7h 22m1 stop Dallas/Fort Worth
American Airlines Logo
10:43 am - 6:17 pmBUF  Buffalo-ONT Ontario
10h 34m2 stops Philadelphia Phoenix Sky Harbor Intl
$291American Airlines
Sat, Sep 19 - Wed, Sep 23
Delta Logo
12:17 pm - 11:52 pmONT  Ontario-BUF Buffalo
8h 35m1 stop Atlanta Hartsfield-Jackson
Delta Logo
12:17 pm - 6:41 pmBUF  Buffalo-ONT Ontario
9h 24m1 stop Atlanta Hartsfield-Jackson
$297Delta
Sat, Sep 19 - Sat, Sep 26
United Airlines Logo
7:00 am - 4:56 pmONT  Ontario-BUF Buffalo
6h 56m1 stop Chicago O'Hare Intl
United Airlines Logo
5:45 pm - 10:49 pmBUF  Buffalo-ONT Ontario
8h 04m1 stop Chicago O'Hare Intl
$373United Airlines
Sun, Sep 6 - Wed, Sep 30
United Airlines Logo
7:00 am - 4:56 pmONT  Ontario-BUF Buffalo
6h 56m1 stop Chicago O'Hare Intl
United Airlines Logo
8:55 am - 12:50 pmBUF  Buffalo-ONT Ontario
6h 55m1 stop Denver Intl
$373United Airlines
Sun, Sep 6 - Sat, Sep 12
United Airlines Logo
9:01 am - 10:37 pmONT  Ontario-BUF Buffalo
10h 36m2 stops San Francisco Denver Intl
United Airlines Logo
5:45 pm - 10:49 pmBUF  Buffalo-ONT Ontario
8h 04m1 stop Chicago O'Hare Intl
$378United Airlines
Sun, Sep 6 - Wed, Sep 30
Southwest Logo
11:55 pm - 10:10 amONT  Ontario-BUF Buffalo
7h 15m1 stop Chicago Midway
Southwest Logo
4:35 pm - 8:15 pmBUF  Buffalo-ONT Ontario
6h 40m1 stop Chicago Midway
$447Southwest
Fri, Sep 11 - Sat, Sep 19
Southwest Logo
11:55 pm - 10:10 amONT  Ontario-BUF Buffalo
7h 15m1 stop Chicago Midway
Southwest Logo
6:50 am - 10:20 amBUF  Buffalo-ONT Ontario
6h 30m1 stop Denver Intl
$481Southwest
Fri, Sep 11 - Fri, Sep 18
Southwest Logo
7:00 am - 7:15 pmONT  Ontario-BUF Buffalo
9h 15m1 stop Las Vegas Harry Reid Intl
Southwest Logo
7:20 am - 1:05 pmBUF  Buffalo-ONT Ontario
8h 45m1 stop Chicago Midway
$487Southwest
Mon, Nov 2 - Thu, Nov 5

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United Airlines flights from Ontario to Buffalo

Our best United Airlines deals on Ontario to Buffalo flight tickets
United Airlines
Sep 19
ONT1:18 pmOntario
6h 19m
1 stop
BUF10:37 pmBuffalo
Sep 23
BUF10:30 amBuffalo
12h 31m
2 stops
ONT8:01 pmOntario
$280
United Airlines
Sep 6
ONT7:00 amOntario
6h 56m
1 stop
BUF4:56 pmBuffalo
Sep 12
BUF8:55 amBuffalo
6h 55m
1 stop
ONT12:50 pmOntario
$373
United Airlines
Sep 6
ONT7:00 amOntario
6h 56m
1 stop
BUF4:56 pmBuffalo
Sep 12
BUF10:33 amBuffalo
13h 20m
2 stops
ONT8:53 pmOntario
$378

American Airlines flights from Ontario to Buffalo

Our best American Airlines deals on Ontario to Buffalo flight tickets
American Airlines
Sep 19
ONT10:25 amOntario
9h 34m
1 stop
BUF10:59 pmBuffalo
Sep 23
BUF7:15 amBuffalo
9h 10m
1 stop
ONT1:25 pmOntario
$286
American Airlines
Sep 19
ONT12:37 pmOntario
7h 22m
1 stop
BUF10:59 pmBuffalo
Sep 23
BUF10:43 amBuffalo
10h 34m
2 stops
ONT6:17 pmOntario
$291
American Airlines
Nov 5
ONT7:49 pmOntario
12h 05m
2 stops
BUF10:54 amBuffalo
Nov 9
BUF4:40 pmBuffalo
10h 03m
1 stop
ONT11:43 pmOntario
$370

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Buffalo that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 11, 2026.
Use the filters below to find and compare flights from Ontario to Buffalo that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioBuffalo

ONT Ontario - BUF Buffalo

ONTBUF

Ontario

Sat 9/19

1:18 pm-10:37 pm

1 stop6h 19m

Buffalo

Wed 9/23

10:30 am-8:01 pm

2 stops12h 31m

$280

OntarioBuffalo

ONT Ontario - BUF Buffalo

ONTBUF

Ontario

Sat 9/19

10:25 am-10:59 pm

1 stop9h 34m

Buffalo

Wed 9/23

7:15 am-1:25 pm

1 stop9h 10m

$286

OntarioBuffalo

ONT Ontario - BUF Buffalo

ONTBUF

Ontario

Sat 9/19

12:37 pm-10:59 pm

1 stop7h 22m

Buffalo

Wed 9/23

10:43 am-6:17 pm

2 stops10h 34m

$291

OntarioBuffalo

ONT Ontario - BUF Buffalo

ONTBUF

Ontario

Sat 9/19

12:17 pm-11:52 pm

1 stop8h 35m

Buffalo

Sat 9/26

12:17 pm-6:41 pm

1 stop9h 24m

$297

OntarioBuffalo

ONT Ontario - BUF Buffalo

ONTBUF

Ontario

Sun 9/6

7:00 am-4:56 pm

1 stop6h 56m

Buffalo

Wed 9/30

5:45 pm-10:49 pm

1 stop8h 04m

$373

OntarioBuffalo

ONT Ontario - BUF Buffalo

ONTBUF

Ontario

Sun 9/6

7:00 am-4:56 pm

1 stop6h 56m

Buffalo

Sat 9/12

8:55 am-12:50 pm

1 stop6h 55m

$373

OntarioBuffalo

ONT Ontario - BUF Buffalo

ONTBUF

Ontario

Sun 9/6

9:01 am-10:37 pm

2 stops10h 36m

Buffalo

Wed 9/30

5:45 pm-10:49 pm

1 stop8h 04m

$378

OntarioBuffalo

ONT Ontario - BUF Buffalo

ONTBUF

Ontario

Fri 9/11

11:55 pm-10:10 am

1 stop7h 15m

Buffalo

Sat 9/19

4:35 pm-8:15 pm

1 stop6h 40m

$447
Quickest round-trip

OntarioBuffalo

ONT Ontario - BUF Buffalo

ONTBUF

Ontario

Fri 9/11

11:55 pm-10:10 am

1 stop7h 15m

Buffalo

Fri 9/18

6:50 am-10:20 am

1 stop6h 30m

$481

OntarioBuffalo

ONT Ontario - BUF Buffalo

ONTBUF

Ontario

Mon 11/2

7:00 am-7:15 pm

1 stop9h 15m

Buffalo

Thu 11/5

7:20 am-1:05 pm

1 stop8h 45m

$487

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Buffalo from

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

What is the typical price of a round-trip flight between Ontario and Buffalo?

Prices are currently low for flights on this route.

Typical prices usually range from $406 to $473.
The lowest price recently found on this route was $280.

What is the cheapest month to fly to Buffalo?

If you aren’t able to travel during the month of March, then book flights to Buffalo from Ontario during February instead. Flights to Buffalo in February, while not as cheap as those in March, still average around $0.

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 $380. Flights from Ontario to Buffalo on a Thursday will generally be more expensive and average around $480. 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 $284. Flying to Buffalo at noon is an ideal time because this is during off-peak travel hours. In the evening is when there is more demand to fly to Buffalo, so prices are often more expensive at around $430 per ticket.

Can stopping save me money on Ontario to Buffalo flights?

You could potentially save up to 32% on your flight if you consider stops on a Ontario to Buffalo flight.

How have Ontario to Buffalo flight prices changed over time?

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 19m

Direct flights

None
The fastest flight from Ontario to Buffalo takes 6h 19m
There are no direct flights from Ontario to Buffalo. There are no popular flight routes from Ontario to Buffalo.
Search flight deals

Frequently asked questions about flying from Ontario to Buffalo

  • How far is Ontario to Buffalo by plane?

    There are 2161.5 mi between Ontario and Buffalo. 6h 19m 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?

  • 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?

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
SouthwestPriceFrom $286Free CancellationRating
8.0
4,220 reviews
Search Southwest flights
United AirlinesPriceFrom $376Free CancellationRating
7.4
10,102 reviews
Search United Airlines flights

Traveling to a place near Buffalo?

Book flights to Buffalo if you plan to visit one of these locations
Batavia
Cheektowaga
Amherst
Tonawanda
Williamsville
Orchard Park
Grand Island
Bowmansville
West Seneca
Lockport
East Aurora
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.

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