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Cheap Flights from Philadelphia to Mascoutah (ILG-STL)
Prices were available within the past 7 days and start at $29 for one-way flights and $53 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.
![Frontier Airlines](http://images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/F9.gif)
Sat, Aug 24 - Sat, Aug 24
PHL
Philadelphia
STL
St. Louis
$53 Roundtrip, found 13 hours ago
$53
Roundtrip
found 13 hours ago
![Spirit Airlines](http://images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/NK.gif)
Tue, Sep 10 - Sat, Sep 14
PHL
Philadelphia
STL
St. Louis
$101 Roundtrip, found 6 days ago
$101
Roundtrip
found 6 days ago
![American Airlines](http://images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif)
Thu, Jul 18 - Mon, Jul 22
PHL
Philadelphia
STL
St. Louis
$131 Roundtrip, just found
$131
Roundtrip
just found
![Frontier Airlines](http://images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/F9.gif)
Mon, Jul 15 - Wed, Jul 17
TTN
Trenton
STL
St. Louis
$153 Roundtrip, found 9 hours ago
$153
Roundtrip
found 9 hours ago
![American Airlines](http://images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif)
Thu, Aug 15 - Tue, Aug 20
ABE
Allentown
STL
St. Louis
$189 Roundtrip, found 14 hours ago
$189
Roundtrip
found 14 hours ago
![United](http://images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif)
Wed, Sep 4 - Sat, Sep 7
PHL
Philadelphia
STL
St. Louis
$190 Roundtrip, just found
$190
Roundtrip
just found
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