Washington Dulles International Airport
Dulles, United StatesIAD / KIAD
International hub · 171 direct destinations · 4 runways · longest runway 11,499 ft
81 °F · ClearSource: METAR observation via the NOAA Aviation Weather Center
Route
Dulles → Seattle
IAD
DullesWashington Dulles International Airport
DullesWashington Dulles International AirportBFISeattleKing County International Airport - Boeing Field
SeattleKing County International Airport - Boeing Field- Distance
- 2,300 mi
- Estimated flight time
- ~5h 10m
Seattle is currently 3 hours behind Dulles.
Observed nonstop
How often does this route fly?
Frequency
Daily at most
On average around 1 flights a day, observed from October 2025 to September 2026.
- 1
- flights per day
- 1.5
- busiest month · Aug
- 1
- quietest month · Oct
- 5 hr 11 min
- measured flight time
- 12 / 12
- months seen
Through the year
Per day, month by month
- 1Jan2026
- 1Feb
- 1Mar
- 1Apr
- 1May
- 1Jun
- 1Jul
- 1.5Aug
- 1Sep
- 1Oct2025
- 1Nov
- 1Dec
Airlines
Who flies it
Red Barn Operationsautumn
Through the day
Departure times
Local time in Dulles. Most departures between 09:00 and 12:00.
- 00:00
- 01:00
- 02:00
- 03:00
- 04:00
- 05:00
- 06:00
- 07:00
- 08:00
- 09:00
- 10:00
- 11:00
- 12:00
- 13:00
- 14:00
- 15:00
- 16:00
- 17:00
- 18:00
- 19:00
- 20:00
- 21:00
- 22:00
- 23:00
Through the week
By weekday
- 0.3Mon
- 0.4Tue
- 0.4Wed
- 0.3Thu
- 0.2Fri
- 0.1Sat
- 0.2Sun
Fleet
Aircraft observed
- Cessna Citation LongitudeC70022%
- Bombardier Challenger 600CL609%
- Gulfstream IVGLF46%
- Bombardier Challenger 350CL355%
- Cessna Citation XC7504%
All the numbers in a table
| Month | Per day | Seen | Airlines |
|---|---|---|---|
| January 2026 | 1 | 7 |
|
| February 2026 | 1 | 7 |
|
| March 2026 | 1 | 9 |
|
| April 2026 | 1 | 7 | – |
| May 2026 | 1 | 7 | – |
| June 2026 | 1 | 8 | – |
| July 2026 | 1 | 6 | – |
| August 2026 | 1.5 | 7 | – |
| September 2026 | 1 | 12 |
|
| October 2025 | 1 | 13 |
|
| November 2025 | 1 | 11 |
|
| December 2025 | 1 | 4 | – |
Airlines observed on this route
From observed callsign routes on IAD-BFI - not a booking guarantee.
About this route
- Domestic route: both airports are in the same country.
- The opposite direction has also been observed as a direct connection.
- Direct destinations observed from Dulles: 171.
- Direct destinations observed from Seattle: 63.
The airports on this route
King County International Airport - Boeing Field
Seattle, United StatesBFI / KBFI
Regional airport · 63 direct destinations · 2 runways · longest runway 10,007 ft
65 °F · ClearSource: METAR observation via the NOAA Aviation Weather Center
Alternative airports for this journey
Same journey, a different airport nearby - with an observed direct connection.
About the route from Dulles to Seattle
The observed direct connection between Washington Dulles International Airport (IAD) and King County International Airport - Boeing Field (BFI) covers approximately 2,300 mi. The estimated flight time is around 5h 10m. Red Barn Operations has been observed on this connection in the available route data.
Frequently asked questions about this route
- How far is Dulles from Seattle by air?
- The great-circle distance between Washington Dulles International Airport and King County International Airport - Boeing Field is approximately 2,300 mi.
- How long is the flight from Dulles to Seattle?
- Based on the distance, the estimated flight time is about 5h 10m. This is an estimate, not a schedule.
- Is there a direct connection from Dulles to Seattle?
- Yes, a direct connection between IAD and BFI has been observed in our route data.
- Which airlines have been observed on this route?
- In the available route data: Red Barn Operations.
- How often is there a flight from Dulles to Seattle?
- On average around 1 flights a day, measured over twelve months (October 2025 to September 2026) in the flight archive, with 98 observed flights. Mainly Red Barn Operations. That is an observation, not a timetable.
- What is the current time difference between Dulles and Seattle?
- Seattle is currently 3 hours behind Dulles.
Where this data comes from
The route data comes from the flight archive (ADS-B, adsb.lol): which connections actually flew over the last twelve full months and who flew them, combined with our own airport, runway, and airline datasets. It is reference data about observed routes - not a current timetable and no claim about bookability.
The frequency and aircraft on this page come from the flight archive (ADS-B, 12 months, October 2025 to September 2026), summarized per route per month. We do not see every flight, so it is a floor, not a count.
Route data updated on October 11, 2026.