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Cheap Flights from St. Louis Lambert International Airport to Seattle-Tacoma International Airport

Search for flights from St. Louis to Seattle. Find affordable one-way or round-trip flights.

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  • Round-trip
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Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Selected Airlines from St. Louis Lambert International Airport to Seattle-Tacoma International Airport

View airlines operating flights from St. Louis to Seattle. Compare prices and find the airline that meets your travel needs to enjoy a comfortable journey.

Frontier Airlines
From US$77
Alaska Airlines
From US$94
American Airlines
From US$95
Delta Air Lines
From US$102
Sun Country Airlines
From US$105
Spirit Airlines
From US$108
United Airlines
From US$108
Southwest Airlines
From US$157
Southern Airways Express
From US$299
ANA airlines
Find more flights and airlines
Flight Schedule from St. Louis Lambert International Airport to Seattle-Tacoma International Airport

Check on the flight schedule from St. Louis to Seattle to find the flight that matches your travel plan.

Flight info.
Departure
Arrival
Weekly Schedule
  1. AA421

    05:29

    STL

    1.9h

    08:25

    CLT

    ---W---
  2. AA2775

    09:36

    CLT

    5.9h

    12:30

    SEA

    ---W---
  3. AS473

    07:00

    STL

    4.4h

    Direct

    09:25

    SEA

    SMTWTFS
  4. UA2363

    13:30

    STL

    6.3h

    Direct

    17:49

    SEA

    SMTWTFS
  5. AS388

    14:21

    STL

    4.4h

    Direct

    16:45

    SEA

    SMTWTFS
  6. F93301

    15:53

    STL

    2.4h

    17:17

    DEN

    ---W--S
  7. F91175

    05:31

    DEN

    3.0h

    07:34

    SEA

    S------
  8. F93301

    15:53

    STL

    2.4h

    17:17

    DEN

    ---W--S
  9. AS705

    18:58

    DEN

    3.0h

    20:55

    SEA

    S--WT-S
  10. F92017

    17:01

    STL

    3.7h

    18:43

    LAS

    ----T--
  11. AS629

    07:15

    LAS

    2.7h

    09:57

    SEA

    SMTWTFS
  12. DL2223

    17:30

    STL

    1.6h

    19:05

    MSP

    SMTWT-S
  13. DL804

    21:35

    MSP

    3.9h

    23:29

    SEA

    S--WT-S
  14. DL1195

    18:35

    STL

    3.4h

    21:00

    SLC

    S-TWTFS
  15. DL1628

    22:45

    SLC

    2.4h

    00:07

    SEA

    SMTWTFS
  16. F93107

    19:51

    STL

    3.7h

    21:34

    LAS

    SMTW-FS
  17. NK421

    06:00

    LAS

    2.8h

    08:45

    SEA

    SMTWTFS

St. Louis Lambert International Airport to Seattle-Tacoma International Airport Flights Info

Flight distance2,747.47km
Cheapest one-way ticket price$76
Cheapest return ticket price$193

FAQs for St. Louis Lambert International Airport to Seattle-Tacoma International Airport Flights

  • How long is a flight from St. Louis Lambert International Airport to Seattle-Tacoma International Airport?

    It takes around 4 hours 20 minutes to fly from St. Louis Lambert International Airport (STL) to Seattle-Tacoma International Airport (SEA).
  • How many daily flights are there from St. Louis Lambert International Airport (STL) to Seattle-Tacoma International Airport (SEA)?

    There are around 5 daily flights from St. Louis Lambert International Airport (STL) to Seattle-Tacoma International Airport (SEA).
  • When are flight tickets from St. Louis Lambert International Airport (STL) to Seattle-Tacoma International Airport (SEA) the cheapest?

    Tickets cost around $224 in May, making it the cheapest month to book. St. Louis Lambert International Airport (STL) to Seattle-Tacoma International Airport (SEA) is a popular route, so don't forget to book your tickets in advance.
  • When are flight tickets from St. Louis Lambert International Airport (STL) to Seattle-Tacoma International Airport (SEA) most expensive?

    The route from St. Louis Lambert International Airport (STL) to Seattle-Tacoma International Airport (SEA) is quite popular. Without considering departure times or holidays, tickets cost around $231 in April, the most expensive month to book this route.
  • What time does the earliest flight from St. Louis Lambert International Airport to Seattle-Tacoma International Airport depart?

    The earliest flight departs from St. Louis Lambert International Airport (STL) at 07:00 and arrives in Seattle-Tacoma International Airport (SEA) at 09:20.
  • What time does the latest flight from St. Louis Lambert International Airport to Seattle-Tacoma International Airport depart?

    The latest flight departs from St. Louis Lambert International Airport (STL) at 19:41 and arrives in Seattle-Tacoma International Airport (SEA) at 22:00.
  • What is the transportation method from the main airport to downtown in Seattle?

    • The distance from Seattle-Tacoma International Airport to downtown is about 17km. It takes about 30 minutes by taxi.
  • Which airline operates the most direct flights from St. Louis Lambert International Airport (STL) to Seattle-Tacoma International Airport (SEA)?

    Alaska Airlines is a very popular airline operating an average of 646 flights per month.