Seattle-Tacoma International Airport
14 miles (23 km) from the city centre. 52.7 million passengers in 2025
| How | Route | Time | Cost |
|---|---|---|---|
| Train | Sound Transit Link 1 Line from SeaTac/Airport station to Westlake in downtown Seattle | about 38m | $3.00 one way |
Flights from BWI to SEA
2 airlines fly nonstop from Baltimore/Washington International Thurgood Marshall Airport to Seattle-Tacoma International Airport. Baltimore/Washington International Thurgood Marshall Airport (Washington, D.C.) to Seattle-Tacoma International Airport (Seattle).
- Distance
- 2,329 mi
- Nonstop flight
- Varies
- Time difference
- −3h
- Nonstop airlines
- 2
Fares from BWI to SEA
Checking today’s fares with the airlines.
Nonstop flights
| Airline | From | To |
|---|---|---|
| Southwest Airlines | BWI Baltimore/Washington International Thurgood Marshall Airport | SEA Seattle-Tacoma International Airport |
| Alaska Airlines | BWI Baltimore/Washington International Thurgood Marshall Airport | SEA Seattle-Tacoma International Airport |
Nonstop service as of October 2026. Airlines change schedules seasonally.
Getting from the airport into Seattle
Before you go
This is domestic travel for US citizens: no passport or visa is needed, but travelers 18 and over need a REAL ID-compliant license or another accepted ID to fly.
Seattle is 3 hours behind Washington, D.C.. Seattle uses the US dollar (USD).
Read the Seattle guide: when to go, weather, airports and tips
Frequently asked questions
How long is the flight from BWI to SEA?
Nonstop flight times vary by airline and season; flights with a connection take longer.
Which airlines fly nonstop from BWI to SEA?
As of October 2026, Southwest Airlines and Alaska Airlines fly this route nonstop.
How far is SEA from BWI?
About 2,329 miles (3,748 km) between the airports.
What is the time difference?
Seattle is 3 hours behind Washington, D.C..
What ID do I need to fly to Seattle?
This is domestic travel for US citizens: no passport or visa is needed, but travelers 18 and over need a REAL ID-compliant license or another accepted ID to fly.
How do I get from Seattle-Tacoma International Airport into Seattle?
Sound Transit Link 1 Line from SeaTac/Airport station to Westlake in downtown Seattle, about 38 minutes, $3.00 one way.
Related pages
Sources
Information checked in October 2026. Schedules, fares and entry rules change, so confirm with the airline or the official source before you travel.