Seattle to Washington (SEA–DCA) — Airlines, Schedules & Connections
No flights match your filters.
No scheduled airline flights on this route — it's flown by charter / private operators (). No nonstop flights on this route. connecting options below.
Most recently operated nonstop flights — the month shown is when each was last scheduled. Most destinations remain reachable with a connection.
No discontinued nonstop flights on record for this route.
SEA–DCA 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 13m. Beyond nonstop, 1-stop connecting options are also available.
Airline Landscape
| Airline | Freq/wk | Aircraft | Duration | Dep OTP | Alliance | Codeshares |
|---|---|---|---|---|---|---|
| AS Alaska Airlines Also: HA, KE | 14 | 738, 73H | 5h13-5h16 | Oneworld | HA, KE | |
| DL Delta Air Lines | 7 | A21N | 5h01 | SkyTeam | – |
Weekly Schedule Pattern
Connection Landscape
On-Time Performance
Other ways to reach Washington from Seattle
| Metric | SEA→DCA | BFI→DCA |
|---|---|---|
| Distance from SEA | – | 5 mi |
| Nonstop airlines | 2 | 1 |
| Weekly flights | 21 | – |
| Flight time | 5h 13m | 5h 8m |
| Departure OTP | 76% | – |
Travel Essentials
SEA: PDT · DCA: EDT
When it's 6:00 PM in Seattle, it's 9:00 PM in Washington.
Link Light Rail runs from downtown Seattle (Westlake station) to the airport in 38 minutes ($3.50 peak). Trains run every 6–12 minutes during peak hours from 5am to 1am. Ride-shares run $30–50 from downtown; SR-99 and I-5 can be heavily congested southbound during afternoon rush (3–7pm).
Sound Transit 574 express bus serves Tacoma ($2.50–4). Sounder commuter rail connects Tacoma to the airport area via a shuttle.
The Metro station is inside Terminal B/C with covered walkway access; Terminal A requires a short outdoor walk or shuttle. Yellow and Blue line trains run to downtown DC in 15–25 minutes for $2.25–$3.85.
Taxis and Uber/Lyft operate from designated pick-up zones outside each terminal; fares to downtown run $15–30. DCA serves the National Mall area and is well-positioned for the U.S. Capitol, Pentagon, and downtown offices. International arrivals clear customs at DCA only for pre-cleared flights; most international traffic uses IAD (Dulles). Rental cars are in a consolidated facility accessible by shuttle.
Humid subtropical climate. Summers (June–August) are hot and very humid at 29–34°C with frequent afternoon thunderstorms causing ground stops and airspace flow programs. The summer storm season is the primary operational disruption risk at DCA. Spring and autumn are transitional with variable conditions and occasional severe thunderstorm outbreaks.
Winters (December–February) bring cold temperatures (−2 to 7°C) with occasional snowstorms that disproportionately affect the DC area due to limited snow-removal infrastructure. Even moderate snowfall (5–10 cm) can shut regional airports for hours. Pack layers for winter; the region's storm response is notoriously inconsistent.
SEA–DCA Quick Facts
Frequently Asked Questions
Flights from SEA to DCA
Seattle–Tacoma International Airport (SEA) and Ronald Reagan Washington National Airport (DCA) are connected by nonstop service from Alaska Airlines and Delta Air Lines. With 21 weekly departures, this is a well served route.
SEA to DCA Flight Duration and Schedule
Nonstop flight time from SEA to DCA is about 5 hours 13 minutes gate to gate. The route covers a distance of 2,323 miles (3,738 km). There are approximately 21 weekly flights outbound and 32 return, totaling 53 flights per week in both directions.
Connecting Options and Alternatives
1-stop connecting options are also available, commonly via Chicago Midway, St. Louis Lambert and Minneapolis–Saint Paul. Two-stop connections are also available via intermediate hubs. Nearby alternative airports include Seattle (BFI).