Flights from St. Louis to Key West

Cheapest flights from St. Louis

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.

Tue, Nov 4 - Wed, Nov 5

STL

Lambert-St. Louis Intl.

EYW

Key West Intl.

$223 Roundtrip, found 1 day ago

$223

Roundtrip

found 1 day ago

Select Delta flight, departing Tue, Nov 4 from Lambert-St. Louis Intl. to Key West Intl., returning Wed, Nov 5, priced at $223 found 1 day ago

Wed, Oct 29 - Wed, Nov 5

STL

Lambert-St. Louis Intl.

EYW

Key West Intl.

$251 Roundtrip, found 1 day ago

$251

Roundtrip

found 1 day ago

Select Delta flight, departing Wed, Oct 29 from Lambert-St. Louis Intl. to Key West Intl., returning Wed, Nov 5, priced at $251 found 1 day ago

Tue, Nov 4 - Sat, Nov 8

STL

Lambert-St. Louis Intl.

EYW

Key West Intl.

$266 Roundtrip, found 1 day ago

$266

Roundtrip

found 1 day ago

Select Delta flight, departing Tue, Nov 4 from Lambert-St. Louis Intl. to Key West Intl., returning Sat, Nov 8, priced at $266 found 1 day ago

Wed, Oct 29 - Thu, Nov 6

STL

Lambert-St. Louis Intl.

EYW

Key West Intl.

$287 Roundtrip, found 1 day ago

$287

Roundtrip

found 1 day ago

Select Delta flight, departing Wed, Oct 29 from Lambert-St. Louis Intl. to Key West Intl., returning Thu, Nov 6, priced at $287 found 1 day ago

Fri, Oct 31 - Wed, Nov 5

STL

Lambert-St. Louis Intl.

EYW

Key West Intl.

$293 Roundtrip, found 1 day ago

$293

Roundtrip

found 1 day ago

Select Delta flight, departing Fri, Oct 31 from Lambert-St. Louis Intl. to Key West Intl., returning Wed, Nov 5, priced at $293 found 1 day ago

Wed, Oct 29 - Sat, Nov 8

STL

Lambert-St. Louis Intl.

EYW

Key West Intl.

$294 Roundtrip, found 1 day ago

$294

Roundtrip

found 1 day ago

Select Delta flight, departing Wed, Oct 29 from Lambert-St. Louis Intl. to Key West Intl., returning Sat, Nov 8, priced at $294 found 1 day ago

Sun, Nov 2 - Wed, Nov 5

STL

Lambert-St. Louis Intl.

EYW

Key West Intl.

$298 Roundtrip, found 1 day ago

$298

Roundtrip

found 1 day ago

Select Delta flight, departing Sun, Nov 2 from Lambert-St. Louis Intl. to Key West Intl., returning Wed, Nov 5, priced at $298 found 1 day ago

Mon, Nov 3 - Sat, Nov 8

STL

Lambert-St. Louis Intl.

EYW

Key West Intl.

$302 Roundtrip, found 1 day ago

$302

Roundtrip

found 1 day ago

Select Delta flight, departing Mon, Nov 3 from Lambert-St. Louis Intl. to Key West Intl., returning Sat, Nov 8, priced at $302 found 1 day ago

Tue, Nov 4 - Tue, Nov 11

STL

Lambert-St. Louis Intl.

EYW

Key West Intl.

$303 Roundtrip, found 1 day ago

$303

Roundtrip

found 1 day ago

Select American Airlines flight, departing Tue, Nov 4 from Lambert-St. Louis Intl. to Key West Intl., returning Tue, Nov 11, priced at $303 found 1 day ago

Fri, Oct 31 - Sat, Nov 8

STL

Lambert-St. Louis Intl.

EYW

Key West Intl.

$308 Roundtrip, found 1 day ago

$308

Roundtrip

found 1 day ago

Select American Airlines flight, departing Fri, Oct 31 from Lambert-St. Louis Intl. to Key West Intl., returning Sat, Nov 8, priced at $308 found 1 day ago

Sat, Nov 1 - Sat, Nov 8

STL

Lambert-St. Louis Intl.

EYW

Key West Intl.

$313 Roundtrip, found 1 day ago

$313

Roundtrip

found 1 day ago

Select American Airlines flight, departing Sat, Nov 1 from Lambert-St. Louis Intl. to Key West Intl., returning Sat, Nov 8, priced at $313 found 1 day ago

Tue, Nov 4 - Thu, Nov 6

STL

Lambert-St. Louis Intl.

EYW

Key West Intl.

$318 Roundtrip, found 1 day ago

$318

Roundtrip

found 1 day ago

Select Delta flight, departing Tue, Nov 4 from Lambert-St. Louis Intl. to Key West Intl., returning Thu, Nov 6, priced at $318 found 1 day ago

Wed, Oct 29 - Fri, Nov 7

STL

Lambert-St. Louis Intl.

EYW

Key West Intl.

$319 Roundtrip, found 1 day ago

$319

Roundtrip

found 1 day ago

Select Delta flight, departing Wed, Oct 29 from Lambert-St. Louis Intl. to Key West Intl., returning Fri, Nov 7, priced at $319 found 1 day ago

Tue, Nov 4 - Fri, Nov 7

STL

Lambert-St. Louis Intl.

EYW

Key West Intl.

$324 Roundtrip, found 1 day ago

$324

Roundtrip

found 1 day ago

Select Delta flight, departing Tue, Nov 4 from Lambert-St. Louis Intl. to Key West Intl., returning Fri, Nov 7, priced at $324 found 1 day ago

Fri, Oct 31 - Thu, Nov 6

STL

Lambert-St. Louis Intl.

EYW

Key West Intl.

$329 Roundtrip, found 1 day ago

$329

Roundtrip

found 1 day ago

Select Delta flight, departing Fri, Oct 31 from Lambert-St. Louis Intl. to Key West Intl., returning Thu, Nov 6, priced at $329 found 1 day ago

Sun, Nov 2 - Sat, Nov 8

STL

Lambert-St. Louis Intl.

EYW

Key West Intl.

$336 Roundtrip, found 1 day ago

$336

Roundtrip

found 1 day ago

Select Delta flight, departing Sun, Nov 2 from Lambert-St. Louis Intl. to Key West Intl., returning Sat, Nov 8, priced at $336 found 1 day ago

Fri, Oct 31 - Fri, Nov 7

STL

Lambert-St. Louis Intl.

EYW

Key West Intl.

$339 Roundtrip, found 1 day ago

$339

Roundtrip

found 1 day ago

Select American Airlines flight, departing Fri, Oct 31 from Lambert-St. Louis Intl. to Key West Intl., returning Fri, Nov 7, priced at $339 found 1 day ago

Sat, Nov 1 - Thu, Nov 6

STL

Lambert-St. Louis Intl.

EYW

Key West Intl.

$345 Roundtrip, found 1 day ago

$345

Roundtrip

found 1 day ago

Select American Airlines flight, departing Sat, Nov 1 from Lambert-St. Louis Intl. to Key West Intl., returning Thu, Nov 6, priced at $345 found 1 day ago

Fri, Oct 17 - Sat, Oct 18

STL

Lambert-St. Louis Intl.

EYW

Key West Intl.

$350 Roundtrip, found 2 days ago

$350

Roundtrip

found 2 days ago

Select American Airlines flight, departing Fri, Oct 17 from Lambert-St. Louis Intl. to Key West Intl., returning Sat, Oct 18, priced at $350 found 2 days ago

Mon, Nov 3 - Fri, Nov 7

STL

Lambert-St. Louis Intl.

EYW

Key West Intl.

$361 Roundtrip, found 1 day ago

$361

Roundtrip

found 1 day ago

Select Delta flight, departing Mon, Nov 3 from Lambert-St. Louis Intl. to Key West Intl., returning Fri, Nov 7, priced at $361 found 1 day ago