Frontier Airlines Flight WN1631 Deals & Information (2025/2026)

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Frontier Airlines Flight 1631 Route Deals From $86

The cheapest prices found with in the last 7 days for return flights were $149 and $86 for one-way flights to Lambert-St. Louis Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Dec 6 - Sat, Dec 13
MCO
Orlando Intl.
STL
Lambert-St. Louis Intl.
$149 Roundtrip, found 12 hours ago
$149
Roundtrip
found 12 hours ago
Select Frontier Airlines flight, departing Sat, Dec 6 from Orlando Intl. to Lambert-St. Louis Intl., returning Sat, Dec 13, priced at $149 found 12 hours ago
Mon, Sep 29 - Mon, Oct 6
MCO
Orlando Intl.
STL
Lambert-St. Louis Intl.
$151 Roundtrip, found 1 day ago
$151
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Mon, Sep 29 from Orlando Intl. to Lambert-St. Louis Intl., returning Mon, Oct 6, priced at $151 found 1 day ago
Sat, Oct 11 - Sat, Oct 18
MCO
Orlando Intl.
STL
Lambert-St. Louis Intl.
$152 Roundtrip, found 22 hours ago
$152
Roundtrip
found 22 hours ago
Select Frontier Airlines flight, departing Sat, Oct 11 from Orlando Intl. to Lambert-St. Louis Intl., returning Sat, Oct 18, priced at $152 found 22 hours ago
Sat, Dec 6 - Mon, Dec 8
MCO
Orlando Intl.
STL
Lambert-St. Louis Intl.
$154 Roundtrip, found 15 hours ago
$154
Roundtrip
found 15 hours ago
Select Frontier Airlines flight, departing Sat, Dec 6 from Orlando Intl. to Lambert-St. Louis Intl., returning Mon, Dec 8, priced at $154 found 15 hours ago
Sat, Oct 11 - Mon, Oct 13
MCO
Orlando Intl.
STL
Lambert-St. Louis Intl.
$157 Roundtrip, just found
$157
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Oct 11 from Orlando Intl. to Lambert-St. Louis Intl., returning Mon, Oct 13, priced at $157 just found
Thu, Dec 11 - Mon, Dec 15
MCO
Orlando Intl.
STL
Lambert-St. Louis Intl.
$159 Roundtrip, found 19 hours ago
$159
Roundtrip
found 19 hours ago
Select Frontier Airlines flight, departing Thu, Dec 11 from Orlando Intl. to Lambert-St. Louis Intl., returning Mon, Dec 15, priced at $159 found 19 hours ago
Sat, Oct 4 - Mon, Oct 13
MCO
Orlando Intl.
STL
Lambert-St. Louis Intl.
$160 Roundtrip, found 3 days ago
$160
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Sat, Oct 4 from Orlando Intl. to Lambert-St. Louis Intl., returning Mon, Oct 13, priced at $160 found 3 days ago
Fri, Oct 10 - Mon, Oct 13
MCO
Orlando Intl.
STL
Lambert-St. Louis Intl.
$161 Roundtrip, found 12 hours ago
$161
Roundtrip
found 12 hours ago
Select Frontier Airlines flight, departing Fri, Oct 10 from Orlando Intl. to Lambert-St. Louis Intl., returning Mon, Oct 13, priced at $161 found 12 hours ago
Thu, Oct 9 - Mon, Oct 13
MCO
Orlando Intl.
STL
Lambert-St. Louis Intl.
$162 Roundtrip, found 2 hours ago
$162
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Thu, Oct 9 from Orlando Intl. to Lambert-St. Louis Intl., returning Mon, Oct 13, priced at $162 found 2 hours ago
Fri, Oct 3 - Sat, Oct 11
MCO
Orlando Intl.
STL
Lambert-St. Louis Intl.
$164 Roundtrip, found 2 hours ago
$164
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Fri, Oct 3 from Orlando Intl. to Lambert-St. Louis Intl., returning Sat, Oct 11, priced at $164 found 2 hours ago