American Airlines Flight 4576 Deals & Information (2025/2026)

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American Airlines Flight 4576 Route Deals From $50

The cheapest prices found with in the last 7 days for return flights were $97 and $50 for one-way flights to Lambert-St. Louis Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Feb 14 - Sun, Feb 15
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$97 Roundtrip, found 3 days ago
$97
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sat, Feb 14 from O'Hare Intl. to Lambert-St. Louis Intl., returning Sun, Feb 15, priced at $97 found 3 days ago
Sat, Jan 17 - Sun, Jan 18
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$99 Roundtrip, found 6 days ago
$99
Roundtrip
found 6 days ago
Select American Airlines flight, departing Sat, Jan 17 from O'Hare Intl. to Lambert-St. Louis Intl., returning Sun, Jan 18, priced at $99 found 6 days ago
Sat, Feb 14 - Sun, Feb 15
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$116 Roundtrip, found 3 days ago
$116
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sat, Feb 14 from O'Hare Intl. to Lambert-St. Louis Intl., returning Sun, Feb 15, priced at $116 found 3 days ago
Sat, Feb 14 - Sun, Feb 15
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$129 Roundtrip, found 3 days ago
$129
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sat, Feb 14 from O'Hare Intl. to Lambert-St. Louis Intl., returning Sun, Feb 15, priced at $129 found 3 days ago
Sat, Feb 14 - Sun, Feb 15
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$157 Roundtrip, found 3 days ago
$157
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sat, Feb 14 from O'Hare Intl. to Lambert-St. Louis Intl., returning Sun, Feb 15, priced at $157 found 3 days ago
Sat, Feb 14 - Sun, Feb 15
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$167 Roundtrip, found 3 days ago
$167
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sat, Feb 14 from O'Hare Intl. to Lambert-St. Louis Intl., returning Sun, Feb 15, priced at $167 found 3 days ago
Wed, Dec 31 - Sun, Jan 4
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$207 Roundtrip, found 1 day ago
$207
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, Dec 31 from O'Hare Intl. to Lambert-St. Louis Intl., returning Sun, Jan 4, priced at $207 found 1 day ago

Frequently asked questions

What route does flight number AA4576 take?
AA4576 is used on a range of routes. More commonly, AA4576 flies directly from CAE to National Airport. If you have a ticket on this route, you'll be up above the clouds for approximately 1 hour and 29 minutes.
What kind of plane is on flight number AA4576?
Chances are you'll be heading off on an Embraer 175 if you're flying from Columbia, SC Airport (CAE-Columbia Metropolitan) to National Airport, a common route for flight AA4576.
If I am not able to travel due to COVID-19, can I change my flight to a later date?
For more info about changing your AA4576 flight with Travelocity, please visit our Customer Service Portal.