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

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

  • One way
  • Round-trip
sortSort by: Lowest Price
  • Sort by: Lowest Price
  • Sort by: Earliest Flight
      • SEA09:55
        9h 8m
        1 stop
        STL21:03
        Seattle - St. Louis|Mon, May 6|Frontier Airlines
        US$58US$88
        34% OFF
        34% OFF
        US$88US$58
      • SEA09:55
        9h 8m
        1 stop
        STL21:03
        Seattle - St. Louis|Mon, May 13|Frontier Airlines
        US$62US$88
        28% OFF
        28% OFF
        US$88US$62
      • SEA09:55
        8h 44m
        1 stop
        STL20:39
        Seattle - St. Louis|Wed, May 8|Frontier Airlines
        US$64US$88
        27% OFF
        27% OFF
        US$88US$64
      • SEA21:35
        10h 12m
        1 stop
        STL09:47
        Seattle - St. Louis|Tue, May 7|Frontier Airlines
        US$64
        US$64
      • SEA21:32
        14h 57m
        1 stop
        STL14:29
        Seattle - St. Louis|Sat, May 4|Frontier Airlines
        US$65
        US$65
      • SEA22:34
        9h 13m
        1 stop
        STL09:47
        Seattle - St. Louis|Fri, May 3|Frontier Airlines
        US$66
        US$66
      • SEA17:58
        14h 40m
        1 stop
        STL10:38
        Seattle - St. Louis|Wed, May 1|Frontier Airlines
        US$66
        US$66
      • SEA20:14
        11h 22m
        1 stop
        STL09:36
        Seattle - St. Louis|Tue, May 21|Frontier Airlines
        US$67
        US$67
      • SEA18:29
        16h 40m
        1 stop
        STL13:09
        Seattle - St. Louis|Mon, May 20|Frontier Airlines
        US$68
        US$68
      • SEA22:34
        9h 13m
        1 stop
        STL09:47
        Seattle - St. Louis|Fri, May 10|Frontier Airlines
        US$72
        US$72
      • SEA13:00
        3h 5m
        Direct
        STL14:00
        Seattle - St. Louis|Thu, May 2|Frontier Airlines
        Find More Flights
        Find More Flights

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

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

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

Frontier Airlines
From US$58
American Airlines
From US$87
Spirit Airlines
From US$92
Alaska Airlines
From US$101
Delta Air Lines
From US$102
Sun Country Airlines
From US$129
United Airlines
From US$134
Southwest Airlines
From US$353
ANA airlines
Find more flights and airlines

There are 1 airport(s) in St. Louis. Discover the top routes now!

Discover different airports in St. Louis. Find the best flight and transfer option, and plan your trip accordingly.

  • 21.12 km from downtown St. Louis
    St. Louis Lambert International Airport
    Tickets From
    US$58
Flight Schedule from Seattle-Tacoma International Airport to St. Louis

Check on the flight schedule from Seattle-Tacoma International Airport to St. Louis. Find the flight that matches your travel plan.

Flight info.
Departure
Arrival
Weekly Schedule

  1. AA2102

    American Airlines

    00:24

    SEA

    3.9h

    06:20

    DFW

    SMTWTFS
    Search

  2. AA2897

    American Airlines

    07:43

    DFW

    1.8h

    09:29

    STL

    SMTWTFS

  3. AS682

    Alaska Airlines

    06:00

    SEA

    2.7h

    09:44

    DEN

    SMTWTFS
    Search

  4. F93302

    Frontier Airlines

    06:26

    DEN

    2.2h

    09:37

    STL

    -M-W--S

  5. NK422

    Spirit Airlines

    09:29

    SEA

    2.6h

    12:03

    LAS

    SMTWTFS
    Search

  6. F94416

    Frontier Airlines

    16:42

    LAS

    3.3h

    21:59

    STL

    -M-----

  7. F91312

    Frontier Airlines

    10:44

    SEA

    2.9h

    13:40

    PHX

    SMT-TFS
    Search

  8. F92076

    Frontier Airlines

    16:18

    PHX

    2.9h

    21:12

    STL

    S-T----

  9. AA2359

    American Airlines

    13:27

    SEA

    4.0h

    19:30

    ORD

    SMTWTFS
    Search

  10. AA2446

    American Airlines

    20:07

    ORD

    1.3h

    21:22

    STL

    SMTWTFS

  11. AS472

    Alaska Airlines

    18:10

    SEA

    3.8h

    Direct

    23:59

    STL

    SMTWTFS
    Search

  12. F92150

    Frontier Airlines

    21:35

    SEA

    2.8h

    01:25

    DEN

    -M-----
    Search

  13. F9006

    Frontier Airlines

    07:00

    DEN

    2.1h

    10:05

    STL

    S-T-TF-

  14. AA2107

    American Airlines

    21:48

    SEA

    5.0h

    05:49

    CLT

    SMTWTFS
    Search

  15. AA2475

    American Airlines

    07:26

    CLT

    2.1h

    08:30

    STL

    SMTWTFS

  16. F91176

    Frontier Airlines

    22:08

    SEA

    2.7h

    01:51

    DEN

    S---T--
    Search

  17. F93302

    Frontier Airlines

    06:26

    DEN

    2.2h

    09:37

    STL

    -M-W--S

  18. F92146

    Frontier Airlines

    23:14

    SEA

    2.8h

    03:01

    DEN

    --TWTFS
    Search

  19. F9006

    Frontier Airlines

    07:00

    DEN

    2.1h

    10:05

    STL

    S-T-TF-
Find more flights and airlines

Flight Info of Flights from Seattle-Tacoma International Airport to St. Louis

Cheapest round-trip ticket price

$210

Cheapest nonstop flight price

$57

Off-season for travel

April

Peak season for travel

October

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

  • What is the transportation method from the main airport to downtown in St. Louis?

    • The distance from St. Louis Lambert International Airport to downtown is about 20km. It takes about 40 minutes by taxi.

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