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Uncover the best deals on Washington to Buffalo flights by comparing fares from hundreds of airlines and agencies.
Good to Know: Cheapest and Fastest IAD - BUF Flights
Useful information for finding best airline tickets from Washington Dulles International to Buffalo Niagara International on your next trip.
Cheapest Round Trip Flight
$247
Frontier Airlines
• 1 stop
• 8h 25m
Sep 18 – Sep 20
The cheapest round trip flight from Washington to Buffalo (IAD-BUF-IAD) is currently $247
Cheapest Direct Flight
$322
United Airlines
• nonstop
• 2h 8m
Sep 18
The cheapest nonstop flight from Washington to Buffalo (IAD-BUF) is currently $322
Fastest Flight
2h 2m
The fastest nonstop flight from Washington to Buffalo (IAD-BUF) takes 2h 2m
Top Airlines Flying from Washington to Buffalo
Latest Flight Deals from Washington (IAD) to Buffalo (BUF)
Compare and book low fare round-trip air tickets from Washington to Buffalo. Ideal for travelers with confirmed return itineraries.
Sep 18 - Sep 20, Economy
Washington → Buffalo
8h 25m
7:50 AM - 12:55 PM • 1 stop
Washington → Buffalo
34h 3m
12:49 PM - 9:32 AM • 1 stop
Frontier Airlines
Sep 18 - Sep 20, Economy
Washington → Buffalo
6h 43m
11:10 AM - 3:13 PM • 1 stop
Washington → Buffalo
6h 57m
6:00 AM - 10:17 AM • 1 stop
Delta Airlines
Sep 18 - Sep 20, Economy
Washington → Buffalo
2h 8m
12:50 PM - 2:18 PM • nonstop
Washington → Buffalo
1h 58m
7:59 PM - 9:17 PM • nonstop
United Airlines
Sep 18 - Sep 20, Economy
Washington → Buffalo
5h 37m
6:15 AM - 9:52 AM • 1 stop
Washington → Buffalo
2h 3m
6:10 AM - 7:33 AM • nonstop
United Airlines
Sep 18 - Sep 20, Economy
Washington → Buffalo
2h 2m
5:40 PM - 7:02 PM • nonstop
Washington → Buffalo
1h 58m
7:59 PM - 9:17 PM • nonstop
United Airlines
Flying to Buffalo soon? We've surfaced some of the most affordable last-minute flights from Washington to Buffalo, ideal for urgent plans or spontaneous trips.
Sep 18 - Sep 20, Economy
Washington → Buffalo
8h 25m
7:50 AM - 12:55 PM • 1 stop
Washington → Buffalo
34h 3m
12:49 PM - 9:32 AM • 1 stop
Frontier Airlines
Sep 18 - Sep 20, Economy
Washington → Buffalo
6h 43m
11:10 AM - 3:13 PM • 1 stop
Washington → Buffalo
6h 57m
6:00 AM - 10:17 AM • 1 stop
Delta Airlines
Sep 18 - Sep 20, Economy
Washington → Buffalo
2h 8m
12:50 PM - 2:18 PM • nonstop
Washington → Buffalo
1h 58m
7:59 PM - 9:17 PM • nonstop
United Airlines
Sep 18 - Sep 20, Economy
Washington → Buffalo
5h 37m
6:15 AM - 9:52 AM • 1 stop
Washington → Buffalo
2h 3m
6:10 AM - 7:33 AM • nonstop
United Airlines
Sep 18 - Sep 20, Economy
Washington → Buffalo
2h 2m
5:40 PM - 7:02 PM • nonstop
Washington → Buffalo
1h 58m
7:59 PM - 9:17 PM • nonstop
United Airlines
Looking for the fastest way to Buffalo? These direct flight options from IAD to BUF offer both convenience and value—no layovers, just straight to your destination.
Sep 18 - Sep 20, Economy
Washington → Buffalo
2h 8m
12:50 PM - 2:18 PM • nonstop
Washington → Buffalo
1h 58m
7:59 PM - 9:17 PM • nonstop
United Airlines
Sep 18 - Sep 20, Economy
Washington → Buffalo
2h 2m
5:40 PM - 7:02 PM • nonstop
Washington → Buffalo
1h 58m
7:59 PM - 9:17 PM • nonstop
United Airlines
Sep 18 - Sep 20, Economy
Washington → Buffalo
2h 7m
10:17 PM - 11:44 PM • nonstop
Washington → Buffalo
2h 2m
10:33 AM - 11:55 AM • nonstop
United Airlines
Sep 18 - Sep 20, Economy
Washington → Buffalo
2h 3m
8:25 AM - 9:48 AM • nonstop
Washington → Buffalo
2h 3m
6:10 AM - 7:33 AM • nonstop
United Airlines
Sep 20 - Sep 25, Economy
Washington → Buffalo
2h 7m
10:17 PM - 11:44 PM • nonstop
Washington → Buffalo
2h 3m
6:00 AM - 7:23 AM • nonstop
United Airlines
FAQs on Washington to Buffalo Flights
What are the airports in Washington?
IAD,BWI,DCA
What’s the most popular airline flying from IAD to BUF?
The most popular airline flying from Washington to Buffalo are
Can I fly from IAD to BUF non-stop?
Yes, you can fly IAD to BUF non-stop on
Which airlines fly nonstop between Washington and Buffalo?
The non-stop flights between Washington and Buffalo are .
What’s the earliest departure time from IAD to BUF Airport?
The earliest flight leaves IAD at 6:15 am and lands in BUF - Buffalo Niagara International
What are the airports in Buffalo?
BUF
Can I make changes to my Washington 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 IAD to BUF?
Read the fare rules of the Washington 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 Washington and Buffalo?
operate flights between Washington and Buffalo
How long does a flight from Washington to Buffalo take?
It takes approximately 1 hour to fly non-stop from IAD to BUF, which is 283.71 miles by air.
Which airlines provide the cheapest flights from Washington (IAD) to Buffalo (BUF) ?
In the past couple of days, the cheapest tickets to BUF from IAD were found on UA : USD 322
Do I need a passport to fly between IAD and BUF?
No
What’s the latest departure time from IAD to BUF ?
The last flight leaves IAD at 10:17 pm
Washington (IAD) to Buffalo (BUF): Airport Information
| Origin Airport | Washington Dulles International , Washington, US |
| Destination Airport | Buffalo Niagara International , Buffalo, US |
| Distance | 284 miles |
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