Washington to Seattle (DCA–SEA) — Airlines, Schedules & Connections
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No nonstop flights on this route. connecting options below.
DCA–SEA is served by 2 airlines with nonstop service. Alaska Airlines and Delta Air Lines lead the route. The flight covers 2,323 miles in approximately 5h 44m. Beyond nonstop, 50 hubs offer 1-stop connections.
Airline Landscape
| Airline | Freq/wk | Aircraft | Duration | Dep OTP | Alliance | Codeshares |
|---|---|---|---|---|---|---|
| AS Alaska Airlines Also: HA, JL, KE | 14 | 73H | 5h55-5h57 | Oneworld | HA, JL, KE | |
| DL Delta Air Lines | 14 | 32Q, 75W | 5h44-5h51 | SkyTeam | – |
Weekly Schedule Pattern
Connection Landscape
Other ways to reach Seattle from Washington
| Metric | DCA→SEA | IAD→SEA | BWI→SEA |
|---|---|---|---|
| Distance from DCA | – | 23 mi | 30 mi |
| Nonstop airlines | 2 | 16 | 2 |
| Weekly flights | 42 | 129 | 14 |
| Flight time | 5h 44m | 5h 41m | 5h 47m |
| Departure OTP | 83% | – | – |
Travel Essentials
DCA: EDT · SEA: PDT
When it's 6:00 PM in Washington, it's 3:00 PM in Seattle.
The DC Metro (Yellow and Blue lines) connects the airport directly to downtown Washington in 15–25 minutes from most central stations ($2.25–$3.85 depending on distance and time of day). The Reagan National Airport station is inside the terminal complex with a direct indoor walkway. Metro runs from about 05:00 to midnight Sunday–Thursday, and until 01:00 on Friday–Saturday.Taxis and Uber/Lyft from the city centre cost $15–30 depending on destination and traffic. DCA is one of the most transit-accessible major US airports. Driving is straightforward via the George Washington Memorial Parkway; short-term parking at the terminal costs from $5 for 20 minutes. No personal vehicles are allowed to idle at arrivals; use the cell-phone lot or commercial pick-up zones.
Link Light Rail from the airport station (inside the terminal) to downtown Seattle takes 38 minutes ($3.50). No transfers needed; trains run 5am to 1am daily.Taxis and ride-shares to downtown cost $35–55. For Bellevue and Eastside destinations (across Lake Washington), ride-share is faster than Link. Car rentals are in the consolidated rental facility; take the free shuttle from baggage claim. Sound Transit buses serve Tacoma, Renton, and Federal Way.
Marine west coast climate. Winters are mild but persistently grey and rainy (3–9°C). Snow is rare at sea level but can occur December through February, causing significant disruptions when it does. The airport sits between Seattle and Tacoma in an area that receives more fog and low cloud than downtown Seattle.
Summers are famously pleasant (18–25°C) with low humidity and mostly clear skies, one of the best flying climates in the US from June through September. The wettest months are November through January.
DCA–SEA Quick Facts
Frequently Asked Questions
Flights from DCA to SEA
Ronald Reagan Washington National Airport (DCA) and Seattle–Tacoma International Airport (SEA) are connected by nonstop service from Alaska Airlines and Delta Air Lines. With 42 weekly departures, this is a heavily served route.
DCA to SEA Flight Duration and Schedule
Nonstop flight time from DCA to SEA ranges from 5 hours 44 minutes to 6 hours 5 minutes. The route covers a distance of 2,323 miles (3,738 km). There are approximately 42 weekly flights outbound and 28 return, totaling 70 flights per week in both directions.
Connecting Options and Alternatives
50 one-stop connections are available, with the fastest taking approximately 7 hours via BFI. Two-stop connections are also available via intermediate hubs. Nearby alternative airports include Dulles (IAD) and Baltimore (BWI).