Flights from St. Louis to Florida Keys

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, Sep 2 - Wed, Sep 10

STL

Lambert-St. Louis Intl.

MIA

Miami Intl.

$197 Roundtrip, found 6 days ago

$197

Roundtrip

found 6 days ago

Select Delta flight, departing Tue, Sep 2 from Lambert-St. Louis Intl. to Miami Intl., returning Wed, Sep 10, priced at $197 found 6 days ago

Fri, Sep 5 - Sat, Sep 13

STL

Lambert-St. Louis Intl.

MIA

Miami Intl.

$216 Roundtrip, found 6 days ago

$216

Roundtrip

found 6 days ago

Select Delta flight, departing Fri, Sep 5 from Lambert-St. Louis Intl. to Miami Intl., returning Sat, Sep 13, priced at $216 found 6 days ago

Fri, Sep 5 - Sat, Sep 13

STL

Lambert-St. Louis Intl.

MIA

Miami Intl.

$234 Roundtrip, found 6 days ago

$234

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Fri, Sep 5 from Lambert-St. Louis Intl. to Miami Intl., returning Sat, Sep 13, priced at $234 found 6 days ago

Fri, Sep 5 - Sat, Sep 13

STL

Lambert-St. Louis Intl.

MIA

Miami Intl.

$236 Roundtrip, found 6 days ago

$236

Roundtrip

found 6 days ago

Select United flight, departing Fri, Sep 5 from Lambert-St. Louis Intl. to Miami Intl., returning Sat, Sep 13, priced at $236 found 6 days ago

Sat, May 17 - Wed, May 28

STL

Lambert-St. Louis Intl.

MIA

Miami Intl.

$240 Roundtrip, found 2 days ago

$240

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Sat, May 17 from Lambert-St. Louis Intl. to Miami Intl., returning Wed, May 28, priced at $240 found 2 days ago

Fri, Sep 5 - Sat, Sep 13

STL

Lambert-St. Louis Intl.

MIA

Miami Intl.

$248 Roundtrip, found 6 days ago

$248

Roundtrip

found 6 days ago

Select American Airlines flight, departing Fri, Sep 5 from Lambert-St. Louis Intl. to Miami Intl., returning Sat, Sep 13, priced at $248 found 6 days ago

Fri, May 16 - Wed, May 28

STL

Lambert-St. Louis Intl.

MIA

Miami Intl.

$250 Roundtrip, found 2 days ago

$250

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Fri, May 16 from Lambert-St. Louis Intl. to Miami Intl., returning Wed, May 28, priced at $250 found 2 days ago

Sat, May 17 - Tue, May 27

STL

Lambert-St. Louis Intl.

MIA

Miami Intl.

$251 Roundtrip, found 2 days ago

$251

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Sat, May 17 from Lambert-St. Louis Intl. to Miami Intl., returning Tue, May 27, priced at $251 found 2 days ago

Fri, Sep 5 - Sat, Sep 13

STL

Lambert-St. Louis Intl.

MIA

Miami Intl.

$253 Roundtrip, found 6 days ago

$253

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Fri, Sep 5 from Lambert-St. Louis Intl. to Miami Intl., returning Sat, Sep 13, priced at $253 found 6 days ago

Fri, Sep 5 - Sat, Sep 13

STL

Lambert-St. Louis Intl.

MIA

Miami Intl.

$256 Roundtrip, found 6 days ago

$256

Roundtrip

found 6 days ago

Select Delta flight, departing Fri, Sep 5 from Lambert-St. Louis Intl. to Miami Intl., returning Sat, Sep 13, priced at $256 found 6 days ago

Tue, Sep 2 - Mon, Sep 15

STL

Lambert-St. Louis Intl.

MIA

Miami Intl.

$258 Roundtrip, found 6 days ago

$258

Roundtrip

found 6 days ago

Select Delta flight, departing Tue, Sep 2 from Lambert-St. Louis Intl. to Miami Intl., returning Mon, Sep 15, priced at $258 found 6 days ago

Fri, May 16 - Thu, May 29

STL

Lambert-St. Louis Intl.

MIA

Miami Intl.

$260 Roundtrip, found 2 days ago

$260

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Fri, May 16 from Lambert-St. Louis Intl. to Miami Intl., returning Thu, May 29, priced at $260 found 2 days ago

Fri, May 16 - Tue, May 27

STL

Lambert-St. Louis Intl.

MIA

Miami Intl.

$261 Roundtrip, found 2 days ago

$261

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Fri, May 16 from Lambert-St. Louis Intl. to Miami Intl., returning Tue, May 27, priced at $261 found 2 days ago

Fri, Sep 5 - Sat, Sep 13

STL

Lambert-St. Louis Intl.

MIA

Miami Intl.

$263 Roundtrip, found 6 days ago

$263

Roundtrip

found 6 days ago

Select United flight, departing Fri, Sep 5 from Lambert-St. Louis Intl. to Miami Intl., returning Sat, Sep 13, priced at $263 found 6 days ago

Sat, May 17 - Sat, May 31

STL

Lambert-St. Louis Intl.

MIA

Miami Intl.

$270 Roundtrip, found 2 days ago

$270

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Sat, May 17 from Lambert-St. Louis Intl. to Miami Intl., returning Sat, May 31, priced at $270 found 2 days ago

Sat, May 17 - Sun, Jun 1

STL

Lambert-St. Louis Intl.

MIA

Miami Intl.

$271 Roundtrip, found 2 days ago

$271

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Sat, May 17 from Lambert-St. Louis Intl. to Miami Intl., returning Sun, Jun 1, priced at $271 found 2 days ago

Fri, Sep 5 - Sat, Sep 13

STL

Lambert-St. Louis Intl.

MIA

Miami Intl.

$276 Roundtrip, found 6 days ago

$276

Roundtrip

found 6 days ago

Select United flight, departing Fri, Sep 5 from Lambert-St. Louis Intl. to Miami Intl., returning Sat, Sep 13, priced at $276 found 6 days ago

Fri, Sep 5 - Sat, Sep 13

STL

Lambert-St. Louis Intl.

MIA

Miami Intl.

$277 Roundtrip, found 6 days ago

$277

Roundtrip

found 6 days ago

Select United flight, departing Fri, Sep 5 from Lambert-St. Louis Intl. to Miami Intl., returning Sat, Sep 13, priced at $277 found 6 days ago

Fri, May 16 - Sat, May 31

STL

Lambert-St. Louis Intl.

MIA

Miami Intl.

$280 Roundtrip, found 2 days ago

$280

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Fri, May 16 from Lambert-St. Louis Intl. to Miami Intl., returning Sat, May 31, priced at $280 found 2 days ago

Fri, Sep 5 - Sat, Sep 13

STL

Lambert-St. Louis Intl.

MIA

Miami Intl.

$299 Roundtrip, found 6 days ago

$299

Roundtrip

found 6 days ago

Select American Airlines flight, departing Fri, Sep 5 from Lambert-St. Louis Intl. to Miami Intl., returning Sat, Sep 13, priced at $299 found 6 days ago