Flights from Collinsville to Seattle

Cheapest flights from Collinsville

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, Aug 20 - Sat, Aug 30

STL

Lambert-St. Louis Intl.

SEA

Seattle - Tacoma Intl.

$189 Roundtrip, found 3 days ago

$189

Roundtrip

found 3 days ago

Select Delta flight, departing Wed, Aug 20 from Lambert-St. Louis Intl. to Seattle - Tacoma Intl., returning Sat, Aug 30, priced at $189 found 3 days ago

Wed, Aug 20 - Sun, Aug 31

STL

Lambert-St. Louis Intl.

SEA

Seattle - Tacoma Intl.

$209 Roundtrip, found 3 days ago

$209

Roundtrip

found 3 days ago

Select Delta flight, departing Wed, Aug 20 from Lambert-St. Louis Intl. to Seattle - Tacoma Intl., returning Sun, Aug 31, priced at $209 found 3 days ago

Mon, Aug 25 - Wed, Aug 27

STL

Lambert-St. Louis Intl.

SEA

Seattle - Tacoma Intl.

$229 Roundtrip, found 3 days ago

$229

Roundtrip

found 3 days ago

Select Delta flight, departing Mon, Aug 25 from Lambert-St. Louis Intl. to Seattle - Tacoma Intl., returning Wed, Aug 27, priced at $229 found 3 days ago

Mon, Jul 14 - Wed, Jul 23

STL

Lambert-St. Louis Intl.

SEA

Seattle - Tacoma Intl.

$249 Roundtrip, found 1 day ago

$249

Roundtrip

found 1 day ago

Select Hawaiian Airlines flight, departing Mon, Jul 14 from Lambert-St. Louis Intl. to Seattle - Tacoma Intl., returning Wed, Jul 23, priced at $249 found 1 day ago

Mon, Jul 14 - Mon, Jul 21

STL

Lambert-St. Louis Intl.

SEA

Seattle - Tacoma Intl.

$289 Roundtrip, found 1 day ago

$289

Roundtrip

found 1 day ago

Select Hawaiian Airlines flight, departing Mon, Jul 14 from Lambert-St. Louis Intl. to Seattle - Tacoma Intl., returning Mon, Jul 21, priced at $289 found 1 day ago

Wed, Aug 20 - Mon, Sep 1

STL

Lambert-St. Louis Intl.

SEA

Seattle - Tacoma Intl.

$309 Roundtrip, found 3 days ago

$309

Roundtrip

found 3 days ago

Select American Airlines flight, departing Wed, Aug 20 from Lambert-St. Louis Intl. to Seattle - Tacoma Intl., returning Mon, Sep 1, priced at $309 found 3 days ago

Sat, Jul 12 - Wed, Jul 23

STL

Lambert-St. Louis Intl.

SEA

Seattle - Tacoma Intl.

$334 Roundtrip, found 1 day ago

$334

Roundtrip

found 1 day ago

Select Alaska Airlines flight, departing Sat, Jul 12 from Lambert-St. Louis Intl. to Seattle - Tacoma Intl., returning Wed, Jul 23, priced at $334 found 1 day ago

Sat, Jul 12 - Mon, Jul 21

STL

Lambert-St. Louis Intl.

SEA

Seattle - Tacoma Intl.

$374 Roundtrip, found 1 day ago

$374

Roundtrip

found 1 day ago

Select Hawaiian Airlines flight, departing Sat, Jul 12 from Lambert-St. Louis Intl. to Seattle - Tacoma Intl., returning Mon, Jul 21, priced at $374 found 1 day ago

Mon, Jul 14 - Sun, Jul 20

STL

Lambert-St. Louis Intl.

SEA

Seattle - Tacoma Intl.

$384 Roundtrip, found 1 day ago

$384

Roundtrip

found 1 day ago

Select Hawaiian Airlines flight, departing Mon, Jul 14 from Lambert-St. Louis Intl. to Seattle - Tacoma Intl., returning Sun, Jul 20, priced at $384 found 1 day ago

Sat, Jul 12 - Sun, Jul 20

STL

Lambert-St. Louis Intl.

SEA

Seattle - Tacoma Intl.

$469 Roundtrip, found 1 day ago

$469

Roundtrip

found 1 day ago

Select Hawaiian Airlines flight, departing Sat, Jul 12 from Lambert-St. Louis Intl. to Seattle - Tacoma Intl., returning Sun, Jul 20, priced at $469 found 1 day ago