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Direct flights from Lambert-St. Louis International (STL) to Seattle-Tacoma International (SEA)

17 nonstop flights a week from Lambert-St. Louis International (STL) to Seattle-Tacoma International (SEA) with 2 airlines, 4h 25m to 7h in the air, 1,705 mi (2,744 km). Departures from 05:50 to 15:23.

Flights from St Louis to Seattle

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Lambert-St. Louis International (STL) to Seattle-Tacoma International (SEA) at a glance

flights a week
17
flights today
1
airlines
2
flight time
4h 25m - 7h
distance
1,705 mi (2,744 km)
first and last departure
05:50 - 15:23
departure terminals
1, 2

Lambert-St. Louis International (STL) to Seattle-Tacoma International (SEA) flight schedule

17 flights a week. Departure and arrival times are local.

FlightDepartsArrivesDurationDaysAircraft
WN 1412
Southwest Airlines
05:50 Lambert-St. Louis International, terminal 2
10:50 Seattle-Tacoma International
7h
Sat
Boeing 737
AS 615
Alaska Airlines
06:00 Lambert-St. Louis International, terminal 1
08:36 Seattle-Tacoma International
4h 36m
Daily
Boeing 737-800
AS 669
Alaska Airlines
06:00 Lambert-St. Louis International, terminal 1
08:40 Seattle-Tacoma International
4h 40m
Mon, Fri, Sat, Sun
Boeing 737-800
AS 618
Alaska Airlines
15:20 Lambert-St. Louis International, terminal 1
17:55 Seattle-Tacoma International
4h 35m
Mon, Fri, Sat, Sun
Boeing 737
AS 618
Alaska Airlines
15:23 Lambert-St. Louis International, terminal 1
17:53 Seattle-Tacoma International
4h 30m
Mon, Thu, Fri, Sun
Boeing 737-900

Seasonal and one-off flights

Not operating in the next two weeks. The first of them is on 1 December.

FlightDepartsArrivesDurationDaysAircraft
AS 615
Alaska Airlines
06:04 Lambert-St. Louis International, terminal 1
08:50 Seattle-Tacoma International
4h 46m
Seasonal
Boeing 737
AS 618
Alaska Airlines
16:04 Lambert-St. Louis International, terminal 1
18:44 Seattle-Tacoma International
4h 40m
Seasonal
Boeing 737
AS 512
Alaska Airlines
06:04 Lambert-St. Louis International, terminal 1
08:46 Seattle-Tacoma International
4h 42m
Seasonal
Boeing 737-900
AS 618
Alaska Airlines
16:32 Lambert-St. Louis International, terminal 1
19:11 Seattle-Tacoma International
4h 39m
Seasonal
Boeing 737-900
AS 618
Alaska Airlines
15:54 Lambert-St. Louis International, terminal 1
18:26 Seattle-Tacoma International
4h 32m
Seasonal
Boeing 737-900
AS 618
Alaska Airlines
15:04 Lambert-St. Louis International, terminal 1
17:32 Seattle-Tacoma International
4h 28m
Seasonal
Boeing 737-900
AS 348
Alaska Airlines
07:00 Lambert-St. Louis International, terminal 1
09:28 Seattle-Tacoma International
4h 28m
Seasonal
Boeing 737-900
AS 647
Alaska Airlines
15:24 Lambert-St. Louis International, terminal 1
17:52 Seattle-Tacoma International
4h 28m
Seasonal
Boeing 737-900
WN 1417
Southwest Airlines
05:10 Lambert-St. Louis International, terminal 2
09:55 Seattle-Tacoma International
6h 45m
Seasonal
Boeing 737-800
AS 388
Alaska Airlines
15:24 Lambert-St. Louis International, terminal 1
17:52 Seattle-Tacoma International
4h 28m
Seasonal
Boeing 737-900
AS 348
Alaska Airlines
06:00 Lambert-St. Louis International, terminal 1
08:28 Seattle-Tacoma International
4h 28m
Seasonal
Boeing 737-900
AS 388
Alaska Airlines
16:12 Lambert-St. Louis International, terminal 1
18:40 Seattle-Tacoma International
4h 28m
Seasonal
Boeing 737-900
AS 329
Alaska Airlines
19:41 Lambert-St. Louis International, terminal 1
22:09 Seattle-Tacoma International
4h 28m
Seasonal
Boeing 737-900
WN 3964
Southwest Airlines
13:15 Lambert-St. Louis International, terminal 2
15:40 Seattle-Tacoma International
4h 25m
Seasonal
WN 2544
Southwest Airlines
10:20 Lambert-St. Louis International, terminal 2
12:45 Seattle-Tacoma International
4h 25m
Seasonal
Boeing 737
WN 4670
Southwest Airlines
21:45 Lambert-St. Louis International, terminal 2
00:10 Seattle-Tacoma International
4h 25m
Seasonal
WN 3964
Southwest Airlines
17:00 Lambert-St. Louis International, terminal 2
19:25 Seattle-Tacoma International
4h 25m
Seasonal
Boeing 737
WN 3818
Southwest Airlines
17:55 Lambert-St. Louis International, terminal 2
20:20 Seattle-Tacoma International
4h 25m
Seasonal
Boeing 737
AS 329
Alaska Airlines
19:32 Lambert-St. Louis International, terminal 1
22:00 Seattle-Tacoma International
4h 28m
Seasonal
Boeing 737-900

Days of the week are taken from the schedule for the next 14 days; schedules change by season. Seattle is 2 hours behind St Louis.

Airlines flying Lambert-St. Louis International (STL) to Seattle-Tacoma International (SEA)

Nonstop flights a week by the current schedule

Alaska Airlines16 a week Southwest Airlines1 a week

Frequently asked questions

How many nonstop flights are there from Lambert-St. Louis International (STL) to Seattle-Tacoma International (SEA)?
17 nonstop flights a week by the current schedule, 14 flight numbers, 1 today.
How long is the flight from Lambert-St. Louis International (STL) to Seattle-Tacoma International (SEA)?
From 4 hours 25 minutes to 7 hours nonstop, depending on the flight.
Which airlines fly nonstop from Lambert-St. Louis International (STL) to Seattle-Tacoma International (SEA)?
Alaska Airlines (16 a week) and Southwest Airlines (1 a week).
Which terminals are used between Lambert-St. Louis International (STL) and Seattle-Tacoma International (SEA)?
Flights depart from Lambert-St. Louis International, terminals 1, 2 and arrive at Seattle-Tacoma International.
How far is Seattle-Tacoma International (SEA) from Lambert-St. Louis International (STL)?
1,705 mi (2,744 km) in a straight line.
What are the earliest and latest flights from Lambert-St. Louis International (STL) to Seattle-Tacoma International (SEA)?
The first departure is at 05:50 (Southwest Airlines), the last at 15:23 (Alaska Airlines), local time.