DCASEA
Washington (Ronald Reagan Washington National Airport) to Seattle (Seattle-Tacoma International Airport).
Flight time from DCA to SEA is estimated at about 5h 23m, based on the 2,323-mile great-circle distance. Our current captured departure sample includes 3-4/day across 2 captured airlines, with Alaska Airlines appearing most often in that sample. Captured departure times run from 08:00 to 18:54 local time.
Plan this routeAt a glance
| Est. flight time | Distance | Captured freq. | Type |
|---|---|---|---|
| ~5h 23m Estimated from great-circle distance — no tracked flights yet. | 2,323 mi | 3-4/day From the current provider sample; confirm live timetables before booking. | Domestic |
Airlines on this route
Captured airlines for DCA to SEA
Our current provider sample includes 3-4/day from DCA to SEA across 2 captured airlines. Captured departure terminal data is available for 2.
- First departure
- 08:00
- Last departure
- 18:54
- Cadence
- 5 departures/day
- Captured departures/day
- 5
| Airline | Captured daily freq. | Aircraft | Departures (local) |
|---|---|---|---|
| Alaska Airlines | 2-3/day | Boeing 737 · Terminal 2 · Seat map | 08:0011:29 |
Aircraft on this route
Flying the other way?
SEA to DCA flights — 3/day on 2 airlines →Methodology: airline, aircraft, terminal, and departure-time details come from the rolling scheduled-departures window for DCA to SEA. Frequency uses 22 scheduled departures across 7 observed days; flight time is estimated from great-circle distance until this route has enough tracked flights for an observed average. Provider coverage can miss operators on some routes, so confirm live timetables before booking.
Route FAQ
How long is the flight from DCA to SEA?
The DCA to SEA flight time is estimated at about 5h 23m from great-circle distance until enough tracked flights are available.
How far is DCA from SEA?
DCA to SEA is about 2,323 miles by air.
Which airlines fly from DCA to SEA?
Our current provider sample for DCA to SEA includes Alaska Airlines, Delta Air Lines. Confirm live timetables before booking.
What aircraft fly from DCA to SEA?
Aircraft captured in our current provider sample for DCA to SEA include Airbus A320 family, Boeing 737.