Flights from Seattle to St. Louis

Cheapest flights from Seattle

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Jul 9 - Tue, Jul 15

SEA

Seattle - Tacoma Intl.

STL

Lambert-St. Louis Intl.

$218 Roundtrip, found 2 days ago

$218

Roundtrip

found 2 days ago

Select United flight, departing Wed, Jul 9 from Seattle - Tacoma Intl. to Lambert-St. Louis Intl., returning Tue, Jul 15, priced at $218 found 2 days ago

Sat, Jun 28 - Fri, Jul 4

SEA

Seattle - Tacoma Intl.

STL

Lambert-St. Louis Intl.

$219 Roundtrip, found 2 days ago

$219

Roundtrip

found 2 days ago

Select Alaska Airlines flight, departing Sat, Jun 28 from Seattle - Tacoma Intl. to Lambert-St. Louis Intl., returning Fri, Jul 4, priced at $219 found 2 days ago

Thu, Jun 26 - Fri, Jul 4

SEA

Seattle - Tacoma Intl.

STL

Lambert-St. Louis Intl.

$233 Roundtrip, found 2 days ago

$233

Roundtrip

found 2 days ago

Select Delta flight, departing Thu, Jun 26 from Seattle - Tacoma Intl. to Lambert-St. Louis Intl., returning Fri, Jul 4, priced at $233 found 2 days ago

Wed, Jul 9 - Tue, Jul 15

SEA

Seattle - Tacoma Intl.

STL

Lambert-St. Louis Intl.

$247 Roundtrip, found 2 days ago

$247

Roundtrip

found 2 days ago

Select United flight, departing Wed, Jul 9 from Seattle - Tacoma Intl. to Lambert-St. Louis Intl., returning Tue, Jul 15, priced at $247 found 2 days ago

Sat, Jun 28 - Fri, Jul 4

SEA

Seattle - Tacoma Intl.

STL

Lambert-St. Louis Intl.

$249 Roundtrip, found 2 days ago

$249

Roundtrip

found 2 days ago

Select Alaska Airlines flight, departing Sat, Jun 28 from Seattle - Tacoma Intl. to Lambert-St. Louis Intl., returning Fri, Jul 4, priced at $249 found 2 days ago

Wed, Jul 9 - Tue, Jul 15

SEA

Seattle - Tacoma Intl.

STL

Lambert-St. Louis Intl.

$253 Roundtrip, found 2 days ago

$253

Roundtrip

found 2 days ago

Select Delta flight, departing Wed, Jul 9 from Seattle - Tacoma Intl. to Lambert-St. Louis Intl., returning Tue, Jul 15, priced at $253 found 2 days ago

Wed, Jul 9 - Tue, Jul 15

SEA

Seattle - Tacoma Intl.

STL

Lambert-St. Louis Intl.

$259 Roundtrip, found 2 days ago

$259

Roundtrip

found 2 days ago

Select United flight, departing Wed, Jul 9 from Seattle - Tacoma Intl. to Lambert-St. Louis Intl., returning Tue, Jul 15, priced at $259 found 2 days ago

Sat, Jun 28 - Fri, Jul 4

SEA

Seattle - Tacoma Intl.

STL

Lambert-St. Louis Intl.

$259 Roundtrip, found 2 days ago

$259

Roundtrip

found 2 days ago

Select Alaska Airlines flight, departing Sat, Jun 28 from Seattle - Tacoma Intl. to Lambert-St. Louis Intl., returning Fri, Jul 4, priced at $259 found 2 days ago

Wed, Jul 9 - Tue, Jul 15

SEA

Seattle - Tacoma Intl.

STL

Lambert-St. Louis Intl.

$263 Roundtrip, found 2 days ago

$263

Roundtrip

found 2 days ago

Select United flight, departing Wed, Jul 9 from Seattle - Tacoma Intl. to Lambert-St. Louis Intl., returning Tue, Jul 15, priced at $263 found 2 days ago

Wed, Jul 9 - Tue, Jul 15

SEA

Seattle - Tacoma Intl.

STL

Lambert-St. Louis Intl.

$269 Roundtrip, found 2 days ago

$269

Roundtrip

found 2 days ago

Select American Airlines flight, departing Wed, Jul 9 from Seattle - Tacoma Intl. to Lambert-St. Louis Intl., returning Tue, Jul 15, priced at $269 found 2 days ago

Wed, Jul 9 - Tue, Jul 15

SEA

Seattle - Tacoma Intl.

STL

Lambert-St. Louis Intl.

$269 Roundtrip, found 2 days ago

$269

Roundtrip

found 2 days ago

Select Spirit Airlines flight, departing Wed, Jul 9 from Seattle - Tacoma Intl. to Lambert-St. Louis Intl., returning Tue, Jul 15, priced at $269 found 2 days ago

Sat, Jun 28 - Fri, Jul 4

SEA

Seattle - Tacoma Intl.

STL

Lambert-St. Louis Intl.

$273 Roundtrip, found 2 days ago

$273

Roundtrip

found 2 days ago

Select United flight, departing Sat, Jun 28 from Seattle - Tacoma Intl. to Lambert-St. Louis Intl., returning Fri, Jul 4, priced at $273 found 2 days ago

Sat, Jun 28 - Fri, Jul 4

SEA

Seattle - Tacoma Intl.

STL

Lambert-St. Louis Intl.

$274 Roundtrip, found 2 days ago

$274

Roundtrip

found 2 days ago

Select Alaska Airlines flight, departing Sat, Jun 28 from Seattle - Tacoma Intl. to Lambert-St. Louis Intl., returning Fri, Jul 4, priced at $274 found 2 days ago

Thu, Jun 26 - Mon, Jul 7

SEA

Seattle - Tacoma Intl.

STL

Lambert-St. Louis Intl.

$277 Roundtrip, found 2 days ago

$277

Roundtrip

found 2 days ago

Select Delta flight, departing Thu, Jun 26 from Seattle - Tacoma Intl. to Lambert-St. Louis Intl., returning Mon, Jul 7, priced at $277 found 2 days ago

Wed, Jul 9 - Tue, Jul 15

SEA

Seattle - Tacoma Intl.

STL

Lambert-St. Louis Intl.

$282 Roundtrip, found 2 days ago

$282

Roundtrip

found 2 days ago

Select Delta flight, departing Wed, Jul 9 from Seattle - Tacoma Intl. to Lambert-St. Louis Intl., returning Tue, Jul 15, priced at $282 found 2 days ago

Wed, Jul 9 - Mon, Jul 14

SEA

Seattle - Tacoma Intl.

STL

Lambert-St. Louis Intl.

$283 Roundtrip, found 2 days ago

$283

Roundtrip

found 2 days ago

Select Delta flight, departing Wed, Jul 9 from Seattle - Tacoma Intl. to Lambert-St. Louis Intl., returning Mon, Jul 14, priced at $283 found 2 days ago

Wed, Jul 9 - Tue, Jul 15

SEA

Seattle - Tacoma Intl.

STL

Lambert-St. Louis Intl.

$288 Roundtrip, found 2 days ago

$288

Roundtrip

found 2 days ago

Select United flight, departing Wed, Jul 9 from Seattle - Tacoma Intl. to Lambert-St. Louis Intl., returning Tue, Jul 15, priced at $288 found 2 days ago

Tue, Jul 1 - Fri, Jul 4

SEA

Seattle - Tacoma Intl.

STL

Lambert-St. Louis Intl.

$310 Roundtrip, found 2 days ago

$310

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Tue, Jul 1 from Seattle - Tacoma Intl. to Lambert-St. Louis Intl., returning Fri, Jul 4, priced at $310 found 2 days ago

Sun, Jun 29 - Sat, Jul 5

SEA

Seattle - Tacoma Intl.

STL

Lambert-St. Louis Intl.

$329 Roundtrip, found 2 days ago

$329

Roundtrip

found 2 days ago

Select Hawaiian Airlines flight, departing Sun, Jun 29 from Seattle - Tacoma Intl. to Lambert-St. Louis Intl., returning Sat, Jul 5, priced at $329 found 2 days ago

Wed, Jul 9 - Tue, Jul 15

SEA

Seattle - Tacoma Intl.

STL

Lambert-St. Louis Intl.

$349 Roundtrip, found 2 days ago

$349

Roundtrip

found 2 days ago

Select American Airlines flight, departing Wed, Jul 9 from Seattle - Tacoma Intl. to Lambert-St. Louis Intl., returning Tue, Jul 15, priced at $349 found 2 days ago