Cheap flights from Ontario to Buffalo from $143

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 8/20. 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
0 bags

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Cheap round-trip flights

American Airlines Logo
12:45 pm - 10:46 pmONT-BUF
7h 01m1 stop
American Airlines Logo
5:38 pm - 10:33 pmBUF-ONT
7h 55m1 stop
$287American Airlines
Find Deal
Wed, Sep 3 - Sat, Sep 6
Frontier Logo
6:56 pm - 4:02 pmONT-BUF
18h 06m1 stop
Frontier Logo
4:57 pm - 7:54 pmBUF-ONT
29h 57m1 stop
$290Frontier
Find Deal
Thu, Sep 11 - Mon, Sep 15
JetBlue Logo
11:59 pm - 11:56 amONT-BUF
8h 57m1 stop
JetBlue Logo
12:56 pm - 9:59 pmBUF-ONT
12h 03m1 stop
$291JetBlue
Find Deal
Sun, Aug 17 - Wed, Aug 20
United Airlines Logo
6:50 pm - 9:53 amONT-BUF
12h 03m2 stops
United Airlines Logo
5:54 pm - 10:30 pmBUF-ONT
7h 36m1 stop
$292United Airlines
Find Deal
Wed, Sep 3 - Sat, Sep 6
Delta Logo
11:55 am - 11:37 pmONT-BUF
8h 42m1 stop
Delta Logo
4:30 pm - 10:41 pmBUF-ONT
9h 11m1 stop
$297Delta
Find Deal
Sat, Oct 4 - Wed, Oct 8
JetBlue Logo
11:59 pm - 12:01 pmONT-BUF
9h 02m1 stop
JetBlue Logo
12:56 pm - 10:10 pmBUF-ONT
12h 14m1 stop
$320JetBlue
Find Deal
Tue, Aug 5 - Tue, Aug 12
Southwest Logo
6:40 am - 4:55 pmONT-BUF
7h 15m1 stop
Southwest Logo
4:15 pm - 10:50 pmBUF-ONT
9h 35m1 stop
$352Southwest
Find Deal
Wed, Oct 8 - Fri, Oct 10
Delta Logo
10:00 pm - 11:01 amONT-BUF
10h 01m1 stop
Delta Logo
4:30 pm - 10:41 pmBUF-ONT
9h 11m1 stop
$357Delta
Find Deal
Fri, Oct 3 - Wed, Oct 8
Southwest Logo
9:00 am - 8:30 pmONT-BUF
8h 30m2 stops
Southwest Logo
4:15 pm - 11:05 pmBUF-ONT
9h 50m2 stops
$362Southwest
Find Deal
Wed, Oct 8 - Fri, Oct 10
United Airlines Logo
5:10 am - 9:16 pmONT-BUF
13h 06m2 stops
United Airlines Logo
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
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
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

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
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
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

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 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)

  • 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?

  • 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
American AirlinesPriceFrom $236Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $346Free CancellationRating
8.0
4,244 reviews
Search Southwest flights
United AirlinesPriceFrom $346Free CancellationRating
7.4
8,858 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
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.


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1 adult
Sat 7/19
Sat 7/26

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