Cheap flights from Seattle to Northeast Missouri

View AU$147 flight on Thu, 23 Oct. 2025Opens in a new window

Popular airlines from Seattle to Northeast Missouri

  • Jetstar

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    Qantas Airways

  • Virgin Australia

    Virgin Australia

  • Scoot

    Scoot

  • American Airlines

    American Airlines

  • Emirates

    Emirates

  • United

    United

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Cheap Flights from Seattle (SEA) to Northeast Missouri (STL)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, 30 Jul. - Wed, 6 Aug.
SEA
Seattle
STL
St. Louis
AU$549 Return, found 2 days ago
AU$549
Return
found 2 days ago
Select Delta flight, departing Wed, 30 Jul. from Seattle to St. Louis, returning Wed, 6 Aug., priced at AU$549 found 2 days ago
Delta
Wed, 30 Jul. - Wed, 6 Aug.
SEA
Seattle
STL
St. Louis
AU$589 Return, found 2 days ago
AU$589
Return
found 2 days ago
Select Delta flight, departing Wed, 30 Jul. from Seattle to St. Louis, returning Wed, 6 Aug., priced at AU$589 found 2 days ago
Delta
Wed, 30 Jul. - Wed, 6 Aug.
SEA
Seattle
STL
St. Louis
AU$612 Return, found 2 days ago
AU$612
Return
found 2 days ago
Select Delta flight, departing Wed, 30 Jul. from Seattle to St. Louis, returning Wed, 6 Aug., priced at AU$612 found 2 days ago
United
Wed, 30 Jul. - Wed, 6 Aug.
SEA
Seattle
STL
St. Louis
AU$619 Return, found 2 days ago
AU$619
Return
found 2 days ago
Select United flight, departing Wed, 30 Jul. from Seattle to St. Louis, returning Wed, 6 Aug., priced at AU$619 found 2 days ago
Alaska Airlines
Wed, 30 Jul. - Wed, 6 Aug.
SEA
Seattle
STL
St. Louis
AU$641 Return, found 2 days ago
AU$641
Return
found 2 days ago
Select Alaska Airlines flight, departing Wed, 30 Jul. from Seattle to St. Louis, returning Wed, 6 Aug., priced at AU$641 found 2 days ago
American Airlines
Wed, 30 Jul. - Wed, 6 Aug.
SEA
Seattle
STL
St. Louis
AU$718 Return, found 2 days ago
AU$718
Return
found 2 days ago
Select American Airlines flight, departing Wed, 30 Jul. from Seattle to St. Louis, returning Wed, 6 Aug., priced at AU$718 found 2 days ago

Find the cheapest month to fly from Seattle (SEA) to St. Louis (STL)

November is typically the cheapest month to fly

From AU$212 - AU$640 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.