American Airlines Flight AA3743 Deals & Information (2024/2025)

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American Airlines Flight 3743 Route Deals From $139

The cheapest prices found with in the last 7 days for return flights were $108 and $139 for one-way flights to Lambert-St. Louis Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, May 25 - Tue, May 28
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$108 Roundtrip, found 10 hours ago
$108
Roundtrip
found 10 hours ago
Select American Airlines flight, departing Sat, May 25 from O'Hare Intl. to Lambert-St. Louis Intl., returning Tue, May 28, priced at $108 found 10 hours ago
Fri, May 31 - Tue, Jun 4
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$138 Roundtrip, found 2 days ago
$138
Roundtrip
found 2 days ago
Select American Airlines flight, departing Fri, May 31 from O'Hare Intl. to Lambert-St. Louis Intl., returning Tue, Jun 4, priced at $138 found 2 days ago
Fri, May 31 - Tue, Jun 4
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$140 Roundtrip, found 2 days ago
$140
Roundtrip
found 2 days ago
Select American Airlines flight, departing Fri, May 31 from O'Hare Intl. to Lambert-St. Louis Intl., returning Tue, Jun 4, priced at $140 found 2 days ago
Tue, Jun 11 - Sat, Jun 15
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$153 Roundtrip, found 5 days ago
$153
Roundtrip
found 5 days ago
Select American Airlines flight, departing Tue, Jun 11 from O'Hare Intl. to Lambert-St. Louis Intl., returning Sat, Jun 15, priced at $153 found 5 days ago
Tue, May 21 - Wed, May 22
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$173 Roundtrip, found 6 hours ago
$173
Roundtrip
found 6 hours ago
Select American Airlines flight, departing Tue, May 21 from O'Hare Intl. to Lambert-St. Louis Intl., returning Wed, May 22, priced at $173 found 6 hours ago
Tue, May 21 - Wed, May 22
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$181 Roundtrip, found 6 hours ago
$181
Roundtrip
found 6 hours ago
Select American Airlines flight, departing Tue, May 21 from O'Hare Intl. to Lambert-St. Louis Intl., returning Wed, May 22, priced at $181 found 6 hours ago
Tue, May 21 - Wed, May 22
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$182 Roundtrip, found 6 hours ago
$182
Roundtrip
found 6 hours ago
Select American Airlines flight, departing Tue, May 21 from O'Hare Intl. to Lambert-St. Louis Intl., returning Wed, May 22, priced at $182 found 6 hours ago
Sat, May 25 - Tue, May 28
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$186 Roundtrip, found 10 hours ago
$186
Roundtrip
found 10 hours ago
Select American Airlines flight, departing Sat, May 25 from O'Hare Intl. to Lambert-St. Louis Intl., returning Tue, May 28, priced at $186 found 10 hours ago
Sat, May 25 - Tue, May 28
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$186 Roundtrip, found 10 hours ago
$186
Roundtrip
found 10 hours ago
Select American Airlines flight, departing Sat, May 25 from O'Hare Intl. to Lambert-St. Louis Intl., returning Tue, May 28, priced at $186 found 10 hours ago
Tue, May 21 - Wed, May 22
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$197 Roundtrip, found 6 hours ago
$197
Roundtrip
found 6 hours ago
Select American Airlines flight, departing Tue, May 21 from O'Hare Intl. to Lambert-St. Louis Intl., returning Wed, May 22, priced at $197 found 6 hours ago