🇺🇸 IAD
Dulles
2302 mi
SEA 🇺🇸
Seattle

Dulles to Seattle Flights

Washington Dulles International Airport Seattle–Tacoma International Airport 5 airlines

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The Dulles to Seattle route connects Washington Dulles International Airport (IAD) in US with Seattle–Tacoma International Airport (SEA) in US. This medium-haul flight covers approximately 2302 miles (3705 km) with a typical flight time of 5h 7m. This route is served by 5 airlines: Alaska Airlines, Delta Air Lines, United and others. AirportRoutes has tracked 3 unique flight numbers on this route.

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Departure Airport

Washington Dulles International Airport

ICAO Code:
KIAD
IATA Code:
IAD
City:
🇺🇸 Dulles
Country:
US
Elevation:
312 ft

Destination Airport

Seattle–Tacoma International Airport

ICAO Code:
KSEA
IATA Code:
SEA
City:
🇺🇸 Seattle
Country:
US
Elevation:
433 ft

5

Operators

3

Tracked Flights

2302

Miles

5h 7m

Flight Duration

Route Map

Operating Airlines

Airline ICAO IATA
Alaska Airlines ASA AS
Delta Air Lines DAL DL
United UAL UA
Horizon QXE QX
Turkish Airlines THY TK

Flight Schedule Pattern

Day Flights Observed Frequency Activity
Monday 12 15%
Tuesday 12 15%
Wednesday 14 18%
Thursday 10 12%
Friday 5 6%
Saturday 16 20%
Sunday 11 14%

Pattern Analysis

3 Tracked Flights:
Data Points: 80
API observations used to build this analysis
Weekdays: 53 flights
Weekend: 27 flights
Business Route More active on weekdays

All Flight Routes

5 Routes
Note: This table shows aggregated route data by airline. Each airline may operate multiple daily flights at different times. See the "Spotted Departure Times" section below for all observed departure times.
Airline Flight Numbers Aircraft Type Typical Time Days Active Last Seen Status
B39M 06:00 6:00 AM (Representative)
M T W T F S S
Jun 20, 2026 Active
BCS3 07:00 7:00 AM (Representative)
M T W T F S S
Jun 20, 2026 Active
Horizon
QXE / QX
- B739 -
M T W T F S S
Jun 20, 2026 Active
- UNKNOWN -
M T W T F S S
Jun 20, 2026 Active
United
UAL / UA
B739 17:55 5:55 PM (Representative)
M T W T F S S
Jun 20, 2026 Active
Total Routes: 5
Active Routes: 5
Unique Airlines: 5
Aircraft Types: 5

Spotted Departure Times

Departure Time Operator ICAO IATA
06:00 6:00 AM Alaska Airlines ASA AS
07:00 7:00 AM Delta Air Lines DAL DL
17:55 5:55 PM United UAL UA

Time Information

Times are shown in the departure airport's local timezone (KIAD - America/New_York).

Total Departure Times: 3
Time Range:
06:00 - 17:55
These are typical departure times observed from actual flights. Times may vary by season and schedule changes.