Dulles to Buffalo (IAD–BUF) — Airlines, Schedules & Connections
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No nonstop flights on this route. connecting options below.
IAD–BUF is served by 3 airlines with nonstop service. United Airlines, Copa Airlines and avianca lead the route. The flight covers 284 miles in approximately 0h 47m. Beyond nonstop, 47 hubs offer 1-stop connections.
Airline Landscape
| Airline | Freq/wk | Aircraft | Duration | Dep OTP | Alliance | Codeshares |
|---|---|---|---|---|---|---|
| UA United Airlines | 36 | CR5, E145, E7W, ERJ | 1h25-1h32 | Star Alliance | – | |
| CM Copa Airlines | 14 | ERJ | 1h30-1h32 | Star Alliance | – | |
| AV avianca | 7 | CR7 | 1h31 | Star Alliance | – |
Weekly Schedule Pattern
Connection Landscape
On-Time Performance
Other ways to reach Buffalo from Dulles
| Metric | IAD→BUF | DCA→BUF | BWI→BUF |
|---|---|---|---|
| Distance from IAD | – | 23 mi | 45 mi |
| Nonstop airlines | 3 | 2 | 1 |
| Weekly flights | 58 | 45 | 69 |
| Flight time | 0h 47m | 1h 19m | 0h 50m |
| Departure OTP | 60% | – | – |
Travel Essentials
IAD: EDT · BUF: EDT
When it's 6:00 PM in Dulles, it's 6:00 PM in Buffalo.
WMATA Silver Line Metro now reaches Dulles directly; take Silver Line to Washington Dulles Airport station (about 65 min from Metro Center, ~$7). The connection opened in late 2022.Ride-shares from downtown DC run $35–60 and take 35–50 minutes via I-66 (longer during peak hours). Washington Flyer coach to Wiehle-Reston East Metro costs $6. The airport is 27 miles from downtown; taxis are expensive ($60–80).
IAD–BUF Quick Facts
Frequently Asked Questions
Flights from IAD to BUF
Washington Dulles International Airport (IAD) and Buffalo Niagara International Airport (BUF) are connected by nonstop service from avianca, Copa Airlines and United Airlines. With 58 weekly departures, this is a heavily served route.
IAD to BUF Flight Duration and Schedule
Nonstop flight time from IAD to BUF ranges from 0 hours 47 minutes to 1 hours 32 minutes. The route covers a distance of 284 miles (457 km). There are approximately 58 weekly flights outbound and 73 return, totaling 131 flights per week in both directions.
Connecting Options and Alternatives
47 one-stop connections are available, with the fastest taking approximately 3 hours via BWI. Two-stop connections are also available via intermediate hubs. Nearby alternative airports include Washington (DCA), Baltimore (BWI) and Richmond (RIC).