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Uncover the best deals on Ontario to Buffalo flights by comparing fares from hundreds of airlines and agencies.
Good to Know: Cheapest and Fastest ONT - BUF Flights
Useful information for finding best airline tickets from Ontario International to Buffalo Niagara International on your next trip.
Cheapest Round Trip Flight
$274
Southwest Airlines
• 1 stop
• 11h 55m
Jul 15 – Jul 19
The cheapest round trip flight from Ontario to Buffalo (ONT-BUF-ONT) is currently $274
Fastest Flight
11h 55m
The fastest nonstop flight from Ontario to Buffalo (ONT-BUF) takes 11h 55m
Top Airlines Flying from Ontario to Buffalo
Latest Flight Deals from Ontario (ONT) to Buffalo (BUF)
Compare and book low fare round-trip air tickets from Ontario to Buffalo. Ideal for travelers with confirmed return itineraries.
Jul 15 - Jul 19, Economy
Ontario → Buffalo
11h 55m
8:15 AM - 6:30 PM • 1 stop
Ontario → Buffalo
12h 30m
6:00 PM - 10:50 PM • 1 stop
Southwest Airlines
Jul 15 - Jul 19, Economy
Ontario → Buffalo
12h 10m
9:40 PM - 8:10 AM • 1 stop
Ontario → Buffalo
14h 10m
5:15 AM - 11:05 AM • 2 stops
Southwest Airlines
Jul 15 - Jul 19, Economy
Ontario → Buffalo
12h 10m
9:40 PM - 8:10 AM • 1 stop
Ontario → Buffalo
17h 25m
5:15 AM - 1:00 PM • 1 stop
Southwest Airlines
Jul 15 - Jul 19, Economy
Ontario → Buffalo
30h 35m
9:40 PM - 7:15 PM • 1 stop
Ontario → Buffalo
20h 45m
6:10 AM - 3:55 PM • 1 stop
Southwest Airlines
Jul 15 - Jul 19, Economy
Ontario → Buffalo
11h 55m
12:35 PM - 10:50 PM • 1 stop
Ontario → Buffalo
11h 43m
6:32 AM - 10:35 AM • 1 stop
American Airlines
Flying to Buffalo soon? We've surfaced some of the most affordable last-minute flights from Ontario to Buffalo, ideal for urgent plans or spontaneous trips.
Jun 24 - Jun 27, Economy
Ontario → Buffalo
12h 10m
9:40 PM - 8:10 AM • 1 stop
Ontario → Buffalo
23h 25m
6:00 AM - 5:05 PM • 2 stops
Southwest Airlines
Jun 24 - Jun 27, Economy
Ontario → Buffalo
26h 52m
11:58 PM - 7:10 PM • 1 stop
Ontario → Buffalo
25h 46m
9:28 PM - 10:14 AM • 1 stop
JetBlue Airways
Jun 24 - Jun 27, Economy
Ontario → Buffalo
12h 10m
9:40 PM - 8:10 AM • 1 stop
Ontario → Buffalo
20h
8:35 AM - 5:35 PM • 3 stops
Southwest Airlines
Jun 24 - Jun 27, Economy
Ontario → Buffalo
12h 10m
11:55 PM - 10:25 AM • 1 stop
Ontario → Buffalo
11h 55m
6:45 PM - 11:00 PM • 1 stop
Southwest Airlines
Jun 24 - Jun 27, Economy
Ontario → Buffalo
20h 35m
11:55 PM - 3:30 PM • 1 stop
Ontario → Buffalo
11h 55m
6:45 PM - 11:00 PM • 1 stop
Southwest Airlines
FAQs on Ontario to Buffalo Flights
What are the airports in Ontario?
ONT
What’s the most popular airline flying from ONT to BUF?
The most popular airline flying from Ontario to Buffalo are
Can I fly from ONT to BUF non-stop?
NO
Which airlines fly nonstop between Ontario and Buffalo?
The non-stop flights between Ontario and Buffalo are .
What’s the earliest departure time from ONT to BUF Airport?
The earliest flight leaves ONT at 5:45 am and lands in BUF - Buffalo Niagara International
What are the airports in Buffalo?
BUF
Can I make changes to my Ontario to Buffalo flight tickets or cancel them on FareLeaders.com?
No. We are an airfare comparison site. All the tickets are booked by the travel agent offering the flight deal and any changes or cancellations to be made are directly done directly by them or the airlines.
Can I cancel my flight tickets from ONT to BUF?
Read the fare rules of the Ontario to Buffalo air tickets booked. Some airlines allow you to cancel the tickets within a stipulated time period with a cancellation fee.
Which airline alliances offer flights from Ontario and Buffalo?
operate flights between Ontario and Buffalo
How long does a flight from Ontario to Buffalo take?
It takes approximately 5 hour to fly non-stop from ONT to BUF, which is 2172.83 miles by air.
Which airlines provide the cheapest flights from Ontario (ONT) to Buffalo (BUF) ?
In the past couple of days, the cheapest tickets to BUF from ONT were found on WN : USD 816
Do I need a passport to fly between ONT and BUF?
No
What’s the latest departure time from ONT to BUF ?
The last flight leaves ONT at 11:58 pm
Ontario (ONT) to Buffalo (BUF): Airport Information
| Origin Airport | Ontario International , Ontario, US |
| Destination Airport | Buffalo Niagara International , Buffalo, US |
| Distance | 2173 miles |
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