SEADCA
Seattle (Seattle-Tacoma International Airport) to Washington (Ronald Reagan Washington National Airport).
Flight time from SEA to DCA is estimated at about 5h 23m, based on the 2,323-mile great-circle distance. Our current captured departure sample includes 3/day across 2 captured airlines, with Alaska Airlines appearing most often in that sample. Captured departure times run from 07:20 to 13:46 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/day From the current provider sample; confirm live timetables before booking. | Domestic |
Airlines on this route
Captured airlines for SEA to DCA
Our current provider sample includes 3/day from SEA to DCA across 2 captured airlines.
- First departure
- 07:20
- Last departure
- 13:46
- Cadence
- ~every 2 hours
- Captured departures/day
- 4
| Airline | Captured daily freq. | Aircraft | Departures (local) |
|---|---|---|---|
| Alaska Airlines | 2/day | Boeing 737 · Seat map | 08:0013:4513:46 |
Aircraft on this route
Flying the other way?
DCA to SEA flights — 3-4/day on 2 airlines →Methodology: airline, aircraft, terminal, and departure-time details come from the rolling scheduled-departures window for SEA to DCA. Frequency uses 21 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 SEA to DCA?
The SEA to DCA flight time is estimated at about 5h 23m from great-circle distance until enough tracked flights are available.
How far is SEA from DCA?
SEA to DCA is about 2,323 miles by air.
Which airlines fly from SEA to DCA?
Our current provider sample for SEA to DCA includes Alaska Airlines, Delta Air Lines. Confirm live timetables before booking.
What aircraft fly from SEA to DCA?
Aircraft captured in our current provider sample for SEA to DCA include Airbus A320 family, Boeing 737.