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

Wed, Feb 12 - Sat, Feb 15

DEN

Denver Intl.

STL

Lambert-St. Louis Intl.

$58 Roundtrip, found 2 days ago

$58

Roundtrip

found 2 days ago

Select Frontier Airlines flight, departing Wed, Feb 12 from Denver Intl. to Lambert-St. Louis Intl., returning Sat, Feb 15, priced at $58 found 2 days ago

Sat, Feb 1 - Wed, Feb 5

ATL

Hartsfield-Jackson Atlanta Intl.

STL

Lambert-St. Louis Intl.

$110 Roundtrip, found 2 days ago

$110

Roundtrip

found 2 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 2 days ago

Mon, Jan 13 - Tue, Jan 14

LGA

LaGuardia

STL

Lambert-St. Louis Intl.

$118 Roundtrip, found 5 days ago

$118

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Mon, Jan 13 from LaGuardia to Lambert-St. Louis Intl., returning Tue, Jan 14, priced at $118 found 5 days ago

Tue, Jan 14 - Sat, Jan 25

LAX

Los Angeles Intl.

STL

Lambert-St. Louis Intl.

$118 Roundtrip, found 1 day ago

$118

Roundtrip

found 1 day 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 1 day ago