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Cheap flights from Ontario to Buffalo from $83

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 10/4. 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

Frontier Logo
8:59 pm - 4:02 pmONT-BUF
16h 03m1 stop
Frontier Logo
4:57 pm - 7:54 pmBUF-ONT
29h 57m1 stop
$152Frontier
Find Deal
Sat, Sep 27 - Fri, Oct 3
Frontier Logo
6:53 am - 4:29 pmONT-BUF
6h 36m1 stop
Frontier Logo
2:42 pm - 11:50 pmBUF-ONT
12h 08m2 stops
$194Frontier
Find Deal
Mon, Oct 27 - Fri, Oct 31
Delta Logo
10:00 pm - 11:01 amONT-BUF
10h 01m1 stop
Delta Logo
6:00 am - 10:26 amBUF-ONT
7h 26m1 stop
$307Delta
Find Deal
Tue, Oct 21 - Tue, Oct 28
Delta Logo
10:30 pm - 11:16 amONT-BUF
9h 46m1 stop
Delta Logo
6:00 am - 11:38 amBUF-ONT
8h 38m1 stop
$311Delta
Find Deal
Sun, Mar 1 - Tue, Mar 3
American Airlines Logo
10:38 am - 11:20 pmONT-BUF
9h 42m2 stops
American Airlines Logo
11:39 am - 5:55 pmBUF-ONT
9h 16m2 stops
$317American Airlines
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Wed, Feb 18 - Tue, Feb 24
Southwest Logo
12:50 pm - 11:50 pmONT-BUF
8h 00m1 stop
Southwest Logo
4:15 pm - 11:00 pmBUF-ONT
9h 45m2 stops
$370Southwest
Find Deal
Fri, Oct 24 - Mon, Oct 27
Southwest Logo
12:50 pm - 11:50 pmONT-BUF
8h 00m1 stop
Southwest Logo
4:15 pm - 10:50 pmBUF-ONT
9h 35m1 stop
$391Southwest
Find Deal
Mon, Oct 20 - Thu, Oct 30
American Airlines Logo
11:59 pm - 3:35 pmONT-BUF
12h 36m2 stops
American Airlines Logo
5:14 am - 12:01 pmBUF-ONT
9h 47m2 stops
$401American Airlines
Find Deal
Mon, Oct 20 - Thu, Oct 30
United Airlines Logo
7:02 am - 4:53 pmONT-BUF
6h 51m1 stop
United Airlines Logo
8:25 am - 12:51 pmBUF-ONT
7h 26m1 stop
$407United Airlines
Find Deal
Wed, Oct 22 - Sat, Oct 25
United Airlines Logo
1:15 pm - 10:46 pmONT-BUF
6h 31m1 stop
United Airlines Logo
6:30 am - 6:06 pmBUF-ONT
14h 36m2 stops
$412United Airlines
Find Deal
Wed, Oct 22 - Sat, Oct 25

Delta flights from Ontario to Buffalo

Our best Delta deals on Ontario to Buffalo flight tickets
Delta
Oct 21
ONT10:00 pmOntario
10h 01m
1 stop
BUF11:01 amBuffalo
Oct 28
BUF6:00 amBuffalo
7h 26m
1 stop
ONT10:26 amOntario
$307
Find similar
Delta
Mar 1
ONT10:30 pmOntario
9h 46m
1 stop
BUF11:16 amBuffalo
Mar 3
BUF6:00 amBuffalo
8h 38m
1 stop
ONT11:38 amOntario
$311
Find similar
Delta
Oct 21
ONT7:05 amOntario
12h 52m
2 stops
BUF10:57 pmBuffalo
Oct 29
BUF6:00 amBuffalo
7h 26m
1 stop
ONT10:26 amOntario
$312
Find similar

Southwest flights from Ontario to Buffalo

Our best Southwest deals on Ontario to Buffalo flight tickets
Southwest
Oct 24
ONT12:50 pmOntario
8h 00m
1 stop
BUF11:50 pmBuffalo
Oct 27
BUF4:15 pmBuffalo
9h 45m
2 stops
ONT11:00 pmOntario
$370
Find similar
Southwest
Oct 20
ONT12:50 pmOntario
8h 00m
1 stop
BUF11:50 pmBuffalo
Oct 30
BUF4:15 pmBuffalo
9h 35m
1 stop
ONT10:50 pmOntario
$391
Find similar
Southwest
Oct 24
ONT6:35 amOntario
11h 10m
2 stops
BUF8:45 pmBuffalo
Oct 27
BUF4:15 pmBuffalo
9h 45m
2 stops
ONT11:00 pmOntario
$414
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 September 15, 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

Sat 9/27

8:59 pm-4:02 pm

1 stop16h 03m

Buffalo

Fri 10/3

4:57 pm-7:54 pm

1 stop29h 57m

$152

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Mon 10/27

6:53 am-4:29 pm

1 stop6h 36m

Buffalo

Fri 10/31

2:42 pm-11:50 pm

2 stops12h 08m

$194

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Tue 10/21

10:00 pm-11:01 am

1 stop10h 01m

Buffalo

Tue 10/28

6:00 am-10:26 am

1 stop7h 26m

$307

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Sun 3/1

10:30 pm-11:16 am

1 stop9h 46m

Buffalo

Tue 3/3

6:00 am-11:38 am

1 stop8h 38m

$311

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Wed 2/18

10:38 am-11:20 pm

2 stops9h 42m

Buffalo

Tue 2/24

11:39 am-5:55 pm

2 stops9h 16m

$317

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Fri 10/24

12:50 pm-11:50 pm

1 stop8h 00m

Buffalo

Mon 10/27

4:15 pm-11:00 pm

2 stops9h 45m

$370

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Mon 10/20

12:50 pm-11:50 pm

1 stop8h 00m

Buffalo

Thu 10/30

4:15 pm-10:50 pm

1 stop9h 35m

$391

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Mon 10/20

11:59 pm-3:35 pm

2 stops12h 36m

Buffalo

Thu 10/30

5:14 am-12:01 pm

2 stops9h 47m

$401

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Wed 10/22

7:02 am-4:53 pm

1 stop6h 51m

Buffalo

Sat 10/25

8:25 am-12:51 pm

1 stop7h 26m

$407

OntarioBuffalo

ONT - BUF

ONTBUF

Ontario

Wed 10/22

1:15 pm-10:46 pm

1 stop6h 31m

Buffalo

Sat 10/25

6:30 am-6:06 pm

2 stops14h 36m

$412

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 September, then book flights to Buffalo from Ontario during January instead. Flights to Buffalo in January, while not as cheap as those in September, 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 $289. Flights from Ontario to Buffalo on a Sunday will generally be more expensive and average around $381. 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 $299. 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 September 2025, prices for Ontario to Buffalo flights are approximately 4% 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

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 31m 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
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $297Free CancellationRating
7.4
8,929 reviews
Search United Airlines flights
SouthwestPriceFrom $346Free CancellationRating
8.0
4,242 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
Tonawanda
Amherst
Williamsville
Grand Island
Orchard Park
Lockport
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.

An easier way to manage your Buffalo trip

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