Buffalo (BUF) to Dulles (IAD)
Flight time
≈ 1h 22m
Bearing
166° S
Buffalo (BUF) to Dulles (IAD) is 284 miles (457 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies BUF–IAD
US DOT T-100 · filed dataIn April 2026, CommuteAir operated the most departures, one of 6 carriers flying nonstop BUF–IAD; the Embraer ERJ-145 was the most common aircraft at 71% of departures; flights ran 84% full.
Departures
214
April 2026
Seats
11,070
both directions
Passengers
9,325
both directions
Load factor
84.2%
passengers ÷ seats
Who flies BUF–IAD?
CommuteAir operated the most nonstop BUF–IAD departures in April 2026 (152), one of 6 carriers on the route.
- C5
CommuteAir
152 departures · 7,600 seats
Share of departures71.0%89.3%
Load
- G7
GoJet Airlines
46 departures · 2,300 seats
Share of departures21.5%78.1%
Load
- YV
Mesa Airlines
10 departures · 724 seats
Share of departures4.7%77.9%
Load
- YX
Republic Airways
4 departures · 304 seats
Share of departures1.9%40.5%
Load
- AC
Air Canada
1 departures · 70 seats
Share of departures0.5%80.0%
Load
- DL
Delta Air Lines
1 departures · 72 seats
Share of departures0.5%0.0%
Load
What plane flies BUF–IAD?
In April 2026, the Embraer ERJ-145 flew 71% of BUF–IAD departures — more than any other aircraft type.
- Embraer ERJ-145
152 departures · 89.3% load
71.0% - Bombardier CRJ-550
46 departures · 78.1% load
21.5% - Embraer E175
14 departures · 66.8% load
6.5% - Boeing 757-200
1 departures · 0.0% load
0.5% - Airbus A320
1 departures · 80.0% load
0.5%
How has BUF–IAD traffic changed?
Nonstop BUF–IAD departures fell from 240 in May 2025 to 214 in April 2026.
Monthly nonstop BUF–IAD traffic, trailing 12 months through April 2026. Bars scale to the busiest month; months with no filed service show as zero.
May 2025
240 departures · 13,608 passengers
88.9%
Load
June 2025
222 departures · 10,578 passengers
88.3%
Load
July 2025
230 departures · 11,965 passengers
87.1%
Load
August 2025
228 departures · 11,985 passengers
90.9%
Load
September 2025
197 departures · 10,308 passengers
87.5%
Load
October 2025
181 departures · 8,136 passengers
88.2%
Load
November 2025
172 departures · 7,661 passengers
80.6%
Load
December 2025
146 departures · 6,867 passengers
85.4%
Load
January 2026
127 departures · 5,721 passengers
86.5%
Load
February 2026
136 departures · 6,389 passengers
81.6%
Load
March 2026
216 departures · 9,464 passengers
83.6%
Load
April 2026
214 departures · 9,325 passengers
84.2%
Load
By direction
The DOT files each direction separately — they rarely match.
BUF → IAD
82.3% full
107 departures · 4,558 passengers
IAD → BUF
86.1% full
107 departures · 4,767 passengers
Nonstop BUF–IAD traffic has been filed with the US DOT since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through April 2026; filings from 2025. Public domain (US Government work). The DOT publishes roughly three months in arrears.
The airports
Frequently asked
How far is Buffalo (BUF) from Dulles (IAD)?
BUF to IAD is 284 miles (457 km / 247 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from BUF to IAD?
A nonstop covers the 284-mile great-circle distance in roughly 1h 22m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies BUF–IAD?
In April 2026, the Embraer ERJ-145 flew the largest share of departures (71.0%), followed by the Bombardier CRJ-550 (21.5%).
What mileage do I earn flying BUF–IAD?
Distance-based programs credit off the 284-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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