Wayfli › Washington (DCA) › To Seattle (SEA)
Washington (DCA) to Seattle (SEA) flights
There are direct flights from Ronald Reagan Washington National Airport to Seattle Tacoma International Airport, sold by one airline: Alaska Airlines. The distance is 3,738 km, about 5h 5m in the air. There are also 17 one-stop options, via airports such as Chicago, Dallas-Fort Worth and Atlanta.
Live fares for DCA → SEASee all routes on the map3,738 kmdistance
~5h 5mdirect flight time (estimate)
1direct airline
17one-stop options
Direct flights from Washington to Seattle
| Route | Airlines (incl. codeshares) | Distance | Time (est.) |
|---|---|---|---|
| DCA → SEA | Alaska Airlines | 3,738 km | ~5h 5m |
Best one-stop connections
Through the biggest hubs first. Times include about 100 minutes to change planes.
| Via | Airlines | Distance | Time (est.) |
|---|---|---|---|
| ORD Chicago | American Airlines and United Airlines then American Airlines and Alaska Airlines | 3,744 km | ~7h 15m |
| DFW Dallas-Fort Worth | American Airlines then American Airlines and Alaska Airlines | 4,583 km | ~8h 15m |
| ATL Atlanta | Air France and Aeromexico then Air France and Aeromexico | 4,385 km | ~8h |
| JFK New York | American Airlines and jetBlue then American Airlines and Alaska Airlines | 4,229 km | ~7h 50m |
| EWR Newark | United Airlines then American Airlines and Alaska Airlines | 4,174 km | ~7h 45m |
| DEN Denver | Frontier Airlines and United Airlines then American Airlines and Alaska Airlines | 4,014 km | ~7h 35m |
| YYZ Toronto | American Airlines and Air Canada then Air Canada | 3,885 km | ~7h 25m |
| CLT Charlotte | American Airlines then American Airlines | 4,193 km | ~7h 45m |
| LAS Las Vegas | American Airlines then Alaska Airlines and Southwest Airlines | 4,749 km | ~8h 25m |
| PHL Philadelphia | American Airlines then American Airlines and Alaska Airlines | 4,009 km | ~7h 35m |
| BOS Boston | American Airlines and jetBlue then American Airlines and Alaska Airlines | 4,647 km | ~8h 20m |
| PDX Portland | American Airlines and Alaska Airlines then Alaska Airlines and United Airlines | 3,981 km | ~7h 30m |
More from Washington and Seattle
- Seattle (SEA) to Washington (DCA) · return route
- All direct flights from Washington (DCA)
- All direct flights from Seattle (SEA)
- Washington to Chicago (ORD)
- Washington to Dallas-Fort Worth (DFW)
- Washington to Atlanta (ATL)
- Washington to Houston (IAH)
- Washington to New York (JFK)
- Washington to Newark (EWR)
- Washington to Denver (DEN)
- Washington to Toronto (YYZ)
- Washington to Los Angeles (LAX)
- Washington to Miami (MIA)
- Washington to Charlotte (CLT)
- Washington to Las Vegas (LAS)
- Istanbul (IST) to Seattle
- Amsterdam (AMS) to Seattle
- Paris (CDG) to Seattle
- Frankfurt (FRA) to Seattle
- Dubai (DXB) to Seattle
- Beijing (PEK) to Seattle
- Chicago (ORD) to Seattle
- Dallas-Fort Worth (DFW) to Seattle
- Shanghai (PVG) to Seattle
- London (LHR) to Seattle
- Atlanta (ATL) to Seattle
- Houston (IAH) to Seattle
Routes come from current airline fares, updated weekly (last update 9 November 2026), plus older schedule data for airports with few recent fares. “Direct” can include a few same-plane flights with a stop. Flight times are estimates from distance. Always check with the airline before booking.