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Prices found within past 7 days. Prices and availability subject to change. Additional terms may apply.

Wed, Feb 19 - Wed, Feb 26

DEN

Denver Intl.

STL

Lambert-St. Louis Intl.

$69 Roundtrip, found 2 days ago

$69

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Wed, Feb 19 from Denver Intl. to Lambert-St. Louis Intl., returning Wed, Feb 26, priced at $69 found 2 days ago

Sat, Feb 1 - Wed, Feb 5

ATL

Hartsfield-Jackson Atlanta Intl.

STL

Lambert-St. Louis Intl.

$110 Roundtrip, found 5 days ago

$110

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Sat, Feb 1 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Wed, Feb 5, priced at $110 found 5 days ago

Tue, Jan 14 - Sat, Jan 25

LAX

Los Angeles Intl.

STL

Lambert-St. Louis Intl.

$118 Roundtrip, found 4 days ago

$118

Roundtrip

found 4 days ago

Select Frontier Airlines flight, departing Tue, Jan 14 from Los Angeles Intl. to Lambert-St. Louis Intl., returning Sat, Jan 25, priced at $118 found 4 days ago

Tue, Apr 8 - Sat, Apr 12

TTN

Mercer

STL

Lambert-St. Louis Intl.

$120 Roundtrip, found 9 hours ago

$120

Roundtrip

found 9 hours ago

Select Frontier Airlines flight, departing Tue, Apr 8 from Mercer to Lambert-St. Louis Intl., returning Sat, Apr 12, priced at $120 found 9 hours ago