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Cheap flights from Ontario to Buffalo from $115

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 1/7. 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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Find the cheapest flights from Ontario to Buffalo

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
10:20 pm - 11:19 amONT-BUF
9h 59m1 stop
Delta Logo
6:00 am - 11:59 amBUF-ONT
8h 59m1 stop
$307Delta
Find Deal
mié., feb. 18 - mar., feb. 24
Delta Logo
10:20 pm - 11:19 amONT-BUF
9h 59m1 stop
Delta Logo
12:25 pm - 10:40 pmBUF-ONT
13h 15m2 stops
$312Delta
Find Deal
mié., feb. 18 - mar., feb. 24
American Airlines Logo
7:10 am - 10:31 pmONT-BUF
12h 21m2 stops
American Airlines Logo
6:45 am - 4:25 pmBUF-ONT
12h 40m2 stops
$317American Airlines
Find Deal
mié., feb. 18 - mar., feb. 24
Delta Logo
11:15 am - 11:37 pmONT-BUF
9h 22m1 stop
Delta Logo
6:00 am - 11:31 amBUF-ONT
8h 31m1 stop
$363Delta
Find Deal
jue., dic. 25 - mar., ene. 6
Delta Logo
11:15 am - 11:37 pmONT-BUF
9h 22m1 stop
Delta Logo
6:00 am - 11:31 amBUF-ONT
8h 31m1 stop
$372Delta
Find Deal
jue., dic. 25 - mar., ene. 6
Delta Logo
11:15 am - 11:37 pmONT-BUF
9h 22m1 stop
Delta Logo
6:00 am - 11:31 amBUF-ONT
8h 31m1 stop
$402Delta
Find Deal
mié., dic. 24 - mar., ene. 6
Delta Logo
12:12 pm - 11:59 pmONT-BUF
8h 47m1 stop
Delta Logo
2:57 pm - 11:04 pmBUF-ONT
11h 07m2 stops
$407Delta
Find Deal
dom., dic. 7 - mar., dic. 9
American Airlines Logo
9:59 am - 12:07 amONT-BUF
11h 08m2 stops
American Airlines Logo
7:27 am - 4:02 pmBUF-ONT
11h 35m2 stops
$412American Airlines
Find Deal
dom., dic. 7 - mar., dic. 9
United Airlines Logo
5:00 am - 9:01 pmONT-BUF
13h 01m2 stops
United Airlines Logo
6:00 am - 5:41 pmBUF-ONT
14h 41m3 stops
$422United Airlines
Find Deal
mié., feb. 18 - mar., feb. 24
Delta Logo
7:05 am - 10:33 pmONT-BUF
12h 28m2 stops
Delta Logo
6:00 am - 11:31 amBUF-ONT
8h 31m1 stop
$432Delta
Find Deal
mié., dic. 24 - mar., ene. 6

American Airlines flights from Ontario to Buffalo

Our best American Airlines deals on Ontario to Buffalo flight tickets
American Airlines
Feb 18
ONT7:10 amOntario
12h 21m
2 stops
BUF10:31 pmBuffalo
Feb 24
BUF6:45 amBuffalo
12h 40m
2 stops
ONT4:25 pmOntario
$317
Find similar
American Airlines
Dec 7
ONT9:59 amOntario
11h 08m
2 stops
BUF12:07 amBuffalo
Dec 9
BUF7:27 amBuffalo
11h 35m
2 stops
ONT4:02 pmOntario
$412
Find similar
American Airlines
Nov 27
ONT6:10 amOntario
7h 33m
1 stop
BUF4:43 pmBuffalo
Dec 1
BUF5:03 pmBuffalo
9h 54m
1 stop
ONT11:57 pmOntario
$454
Find similar

United Airlines flights from Ontario to Buffalo

Our best United Airlines deals on Ontario to Buffalo flight tickets
United Airlines
Feb 18
ONT5:00 amOntario
13h 01m
2 stops
BUF9:01 pmBuffalo
Feb 24
BUF6:00 amBuffalo
14h 41m
3 stops
ONT5:41 pmOntario
$422
Find similar
United Airlines
Dec 7
ONT6:41 pmOntario
12h 07m
2 stops
BUF9:48 amBuffalo
Dec 9
BUF11:35 amBuffalo
14h 14m
3 stops
ONT10:49 pmOntario
$453
Find similar
United Airlines
Jan 4
ONT11:59 pmOntario
11h 15m
2 stops
BUF2:14 pmBuffalo
Jan 6
BUF10:45 amBuffalo
13h 13m
2 stops
ONT8:58 pmOntario
$482
Find similar

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 noviembre 17, 2025.
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

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

mié. 2/18

10:20 pm-11:19 am

1 stop9h 59m

Buffalo

mar. 2/24

6:00 am-11:59 am

1 stop8h 59m

$307

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

mié. 2/18

10:20 pm-11:19 am

1 stop9h 59m

Buffalo

mar. 2/24

12:25 pm-10:40 pm

2 stops13h 15m

$312

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

mié. 2/18

7:10 am-10:31 pm

2 stops12h 21m

Buffalo

mar. 2/24

6:45 am-4:25 pm

2 stops12h 40m

$317

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

jue. 12/25

11:15 am-11:37 pm

1 stop9h 22m

Buffalo

mar. 1/6

6:00 am-11:31 am

1 stop8h 31m

$363

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

jue. 12/25

11:15 am-11:37 pm

1 stop9h 22m

Buffalo

mar. 1/6

6:00 am-11:31 am

1 stop8h 31m

$372

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

mié. 12/24

11:15 am-11:37 pm

1 stop9h 22m

Buffalo

mar. 1/6

6:00 am-11:31 am

1 stop8h 31m

$402

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

dom. 12/7

12:12 pm-11:59 pm

1 stop8h 47m

Buffalo

mar. 12/9

2:57 pm-11:04 pm

2 stops11h 07m

$407

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

dom. 12/7

9:59 am-12:07 am

2 stops11h 08m

Buffalo

mar. 12/9

7:27 am-4:02 pm

2 stops11h 35m

$412

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

mié. 2/18

5:00 am-9:01 pm

2 stops13h 01m

Buffalo

mar. 2/24

6:00 am-5:41 pm

3 stops14h 41m

$422

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

mié. 12/24

7:05 am-10:33 pm

2 stops12h 28m

Buffalo

mar. 1/6

6:00 am-11:31 am

1 stop8h 31m

$432

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 cheapest month to fly to Buffalo?

If you aren’t able to travel during the month of January, then book flights to Buffalo from Ontario during May instead. Flights to Buffalo in May, while not as cheap as those in January, still average around $346.

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 $298. Flights from Ontario to Buffalo on a Sunday will generally be more expensive and average around $409. 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 $297. 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 November 2025, prices for Ontario to Buffalo flights are approximately 21% more expensive 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

Direct flights

None
There are no direct flights from Ontario to Buffalo. There are no popular flight routes from Ontario to Buffalo.
Search flight deals

  • How far is Ontario to Buffalo by plane?

    There are 2161.5 mi between Ontario and Buffalo. 6h 14m 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 $286Free CancellationRating
7.2
11,048 reviews
Search American Airlines flights
United AirlinesPriceFrom $297Free CancellationRating
7.4
9,014 reviews
Search United Airlines flights
SouthwestPriceFrom $353Free CancellationRating
8.0
4,245 reviews
Search Southwest flights

Traveling to a place near Buffalo?

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