SeattletoWashingtonFlight Time
SEA–IAD · Nonstop
Seattle (Seattle-Tacoma International Airport) to Washington (Washington Dulles International Airport).
The estimated flight time from Seattle (SEA) to Washington (IAD) is about 5h 20m, covering 2,300 miles. Alaska Airlines, United Airlines, and Delta Air Lines fly the route nonstop with 6-7/day departures, from 08:00 to 23:30 local time.
Plan this routeAt a glance
| Est. flight time | Distance | Route type | Captured freq. | Market |
|---|---|---|---|---|
| ~5h 20m Estimated from great-circle distance — no tracked flights yet. | 2,300 mi | Nonstop | 6-7/day From the current provider sample; confirm live timetables before booking. | Domestic |
Airlines on this route
Nonstop airlines from Seattle to Washington
Alaska Airlines, United Airlines, and Delta Air Lines operate 6-7/day flights from SEA to IAD.
- First departure
- 08:00
- Last departure
- 23:30
- Cadence
- ~every 2 hours
- Scheduled departure times
- 10
| Airline | Captured daily freq. | Aircraft | Departures (local) |
|---|---|---|---|
| Alaska Airlines | 3/day | Boeing 737 · Seat map | 08:2209:13 |
Aircraft on this route
Flying the other way?
IAD to SEA flights — 6-7/day on 3 airlines →Methodology: airline, aircraft, terminal, and departure-time details come from a full week of published airline schedules for SEA, refreshed on a rolling basis. Frequency uses 45 scheduled departures across 7 observed days; flight time is estimated from flying distance until this route has enough tracked flights for an observed average.
Route FAQ
How long is the flight from Seattle to Washington?
The estimated flight time from Seattle (SEA) to Washington (IAD) is about 5h 20m, based on the 2,300-mile flying distance.
How far is Seattle from Washington?
Seattle (SEA) to Washington (IAD) is about 2,300 miles by air.
Are there nonstop flights from Seattle to Washington?
Yes. Alaska Airlines, United Airlines, and Delta Air Lines fly nonstop from Seattle (SEA) to Washington (IAD), with 6-7/day departures.
Which airlines fly from Seattle to Washington?
Alaska Airlines, United Airlines, and Delta Air Lines fly nonstop from Seattle (SEA) to Washington (IAD).
What aircraft fly from Seattle to Washington?
The SEA–IAD route is flown with Airbus A220, Boeing 737, Embraer E-Jet.
Route hubs
Nearby airport options
Near Washington
- DCA - WashingtonRonald Reagan Washington Ntl Airport · 24 mi from IADFlights to DCA
- BWI - BaltimoreBaltimore/Washington International Thurgood Marshall Airport · 45 mi from IADFlights to BWI
- RIC - RichmondRichmond International Airport · 100 mi from IADFlights to RIC