Flights from O'Fallon

Cheapest flights from O'Fallon

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.

Sat, Sep 27 - Sat, Oct 4

STL

Lambert-St. Louis Intl.

DEN

Denver Intl.

$129 Roundtrip, found 2 days ago

$129

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Sat, Sep 27 from Lambert-St. Louis Intl. to Denver Intl., returning Sat, Oct 4, priced at $129 found 2 days ago

Thu, Sep 25 - Sat, Oct 4

STL

Lambert-St. Louis Intl.

DEN

Denver Intl.

$133 Roundtrip, found 2 days ago

$133

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Thu, Sep 25 from Lambert-St. Louis Intl. to Denver Intl., returning Sat, Oct 4, priced at $133 found 2 days ago

Fri, Sep 26 - Sat, Oct 4

STL

Lambert-St. Louis Intl.

DEN

Denver Intl.

$138 Roundtrip, found 2 days ago

$138

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Fri, Sep 26 from Lambert-St. Louis Intl. to Denver Intl., returning Sat, Oct 4, priced at $138 found 2 days ago

Wed, Aug 6 - Sat, Aug 9

STL

Lambert-St. Louis Intl.

MCO

Orlando Intl.

$140 Roundtrip, found 2 days ago

$140

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Wed, Aug 6 from Lambert-St. Louis Intl. to Orlando Intl., returning Sat, Aug 9, priced at $140 found 2 days ago

Wed, Aug 6 - Thu, Aug 7

STL

Lambert-St. Louis Intl.

MCO

Orlando Intl.

$146 Roundtrip, found 2 days ago

$146

Roundtrip

found 2 days ago

Select Spirit Airlines flight, departing Wed, Aug 6 from Lambert-St. Louis Intl. to Orlando Intl., returning Thu, Aug 7, priced at $146 found 2 days ago

Mon, Sep 29 - Thu, Oct 2

STL

Lambert-St. Louis Intl.

DEN

Denver Intl.

$157 Roundtrip, found 3 days ago

$157

Roundtrip

found 3 days ago

Select United flight, departing Mon, Sep 29 from Lambert-St. Louis Intl. to Denver Intl., returning Thu, Oct 2, priced at $157 found 3 days ago

Thu, Sep 25 - Sun, Sep 28

STL

Lambert-St. Louis Intl.

TPA

Tampa Intl.

$165 Roundtrip, found 12 hours ago

$165

Roundtrip

found 12 hours ago

Select Spirit Airlines flight, departing Thu, Sep 25 from Lambert-St. Louis Intl. to Tampa Intl., returning Sun, Sep 28, priced at $165 found 12 hours ago

Thu, Oct 2 - Sat, Oct 11

STL

Lambert-St. Louis Intl.

PHX

Sky Harbor Intl.

$171 Roundtrip, found 4 days ago

$171

Roundtrip

found 4 days ago

Select Spirit Airlines flight, departing Thu, Oct 2 from Lambert-St. Louis Intl. to Sky Harbor Intl., returning Sat, Oct 11, priced at $171 found 4 days ago

Thu, Sep 11 - Sat, Sep 13

STL

Lambert-St. Louis Intl.

LAS

Harry Reid Intl.

$173 Roundtrip, found 2 days ago

$173

Roundtrip

found 2 days ago

Select Spirit Airlines flight, departing Thu, Sep 11 from Lambert-St. Louis Intl. to Harry Reid Intl., returning Sat, Sep 13, priced at $173 found 2 days ago

Fri, Aug 22 - Wed, Aug 27

STL

Lambert-St. Louis Intl.

RSW

Southwest Florida Intl.

$175 Roundtrip, found 6 days ago

$175

Roundtrip

found 6 days ago

Select Spirit Airlines flight, departing Fri, Aug 22 from Lambert-St. Louis Intl. to Southwest Florida Intl., returning Wed, Aug 27, priced at $175 found 6 days ago

Mon, Sep 29 - Thu, Oct 2

STL

Lambert-St. Louis Intl.

DEN

Denver Intl.

$177 Roundtrip, found 3 days ago

$177

Roundtrip

found 3 days ago

Select American Airlines flight, departing Mon, Sep 29 from Lambert-St. Louis Intl. to Denver Intl., returning Thu, Oct 2, priced at $177 found 3 days ago

Mon, Oct 13 - Sat, Oct 18

STL

Lambert-St. Louis Intl.

RSW

Southwest Florida Intl.

$187 Roundtrip, found 2 days ago

$187

Roundtrip

found 2 days ago

Select Delta flight, departing Mon, Oct 13 from Lambert-St. Louis Intl. to Southwest Florida Intl., returning Sat, Oct 18, priced at $187 found 2 days ago

Sun, Nov 9 - Thu, Nov 13

STL

Lambert-St. Louis Intl.

MIA

Miami Intl.

$189 Roundtrip, found 3 days ago

$189

Roundtrip

found 3 days ago

Select Spirit Airlines flight, departing Sun, Nov 9 from Lambert-St. Louis Intl. to Miami Intl., returning Thu, Nov 13, priced at $189 found 3 days ago

Thu, Aug 14 - Mon, Aug 25

STL

Lambert-St. Louis Intl.

DFW

Dallas-Fort Worth Intl.

$189 Roundtrip, found 5 days ago

$189

Roundtrip

found 5 days ago

Select Spirit Airlines flight, departing Thu, Aug 14 from Lambert-St. Louis Intl. to Dallas-Fort Worth Intl., returning Mon, Aug 25, priced at $189 found 5 days ago

Tue, Aug 5 - Thu, Aug 21

STL

Lambert-St. Louis Intl.

DAL

Love Field

$197 Roundtrip, found 5 days ago

$197

Roundtrip

found 5 days ago

Select Delta flight, departing Tue, Aug 5 from Lambert-St. Louis Intl. to Love Field, returning Thu, Aug 21, priced at $197 found 5 days ago

Thu, Sep 25 - Wed, Oct 1

STL

Lambert-St. Louis Intl.

LAX

Los Angeles Intl.

$237 Roundtrip, found 2 days ago

$237

Roundtrip

found 2 days ago

Select Spirit Airlines flight, departing Thu, Sep 25 from Lambert-St. Louis Intl. to Los Angeles Intl., returning Wed, Oct 1, priced at $237 found 2 days ago

Wed, Sep 3 - Thu, Sep 4

STL

Lambert-St. Louis Intl.

LAS

Harry Reid Intl.

$277 Roundtrip, found 2 days ago

$277

Roundtrip

found 2 days ago

Select Alaska Airlines flight, departing Wed, Sep 3 from Lambert-St. Louis Intl. to Harry Reid Intl., returning Thu, Sep 4, priced at $277 found 2 days ago

Tue, Sep 30 - Wed, Oct 1

STL

Lambert-St. Louis Intl.

LAS

Harry Reid Intl.

$279 Roundtrip, found 2 hours ago

$279

Roundtrip

found 2 hours ago

Select Hawaiian Airlines flight, departing Tue, Sep 30 from Lambert-St. Louis Intl. to Harry Reid Intl., returning Wed, Oct 1, priced at $279 found 2 hours ago

Tue, Jan 6 - Fri, Jan 9

STL

Lambert-St. Louis Intl.

SAN

San Diego Intl.

$301 Roundtrip, found 4 days ago

$301

Roundtrip

found 4 days ago

Select Alaska Airlines flight, departing Tue, Jan 6 from Lambert-St. Louis Intl. to San Diego Intl., returning Fri, Jan 9, priced at $301 found 4 days ago

Tue, Jan 6 - Fri, Jan 9

STL

Lambert-St. Louis Intl.

CLD

McClellan-Palomar

$301 Roundtrip, found 4 days ago

$301

Roundtrip

found 4 days ago

Select American Airlines flight, departing Tue, Jan 6 from Lambert-St. Louis Intl. to McClellan-Palomar, returning Fri, Jan 9, priced at $301 found 4 days ago