Cheap American Airlines flights from Champaign to St. Louis (CMI to STL)

Find The Best Day To Fly from Champaign to St. Louis

Amazing American Airlines CMI to STL Flight Deals

The cheapest flights to Lambert-St. Louis Intl. found within the past 7 days were $386 round trip and one way. Prices and availability subject to change. Additional terms may apply.

Thu, Sep 11 - Sun, Sep 14
CMI
Champaign
STL
St. Louis
$386 Roundtrip, found 2 days ago
$386
Roundtrip
found 2 days ago
Select American Airlines flight, departing Thu, Sep 11 from Champaign to St. Louis, returning Sun, Sep 14, priced at $386 found 2 days ago
Mon, Sep 8 - Sat, Sep 13
CMI
Champaign
STL
St. Louis
$446 Roundtrip, found 2 days ago
$446
Roundtrip
found 2 days ago
Select American Airlines flight, departing Mon, Sep 8 from Champaign to St. Louis, returning Sat, Sep 13, priced at $446 found 2 days ago
Thu, Sep 11 - Sun, Sep 14
CMI
Champaign
STL
St. Louis
$487 Roundtrip, found 2 days ago
$487
Roundtrip
found 2 days ago
Select American Airlines flight, departing Thu, Sep 11 from Champaign to St. Louis, returning Sun, Sep 14, priced at $487 found 2 days ago
Thu, Sep 11 - Sun, Sep 14
CMI
Champaign
STL
St. Louis
$533 Roundtrip, found 2 days ago
$533
Roundtrip
found 2 days ago
Select American Airlines flight, departing Thu, Sep 11 from Champaign to St. Louis, returning Sun, Sep 14, priced at $533 found 2 days ago
Thu, Sep 11 - Sun, Sep 14
CMI
Champaign
STL
St. Louis
$546 Roundtrip, found 2 days ago
$546
Roundtrip
found 2 days ago
Select American Airlines flight, departing Thu, Sep 11 from Champaign to St. Louis, returning Sun, Sep 14, priced at $546 found 2 days ago
Thu, Sep 11 - Sun, Sep 14
CMI
Champaign
STL
St. Louis
$568 Roundtrip, found 2 days ago
$568
Roundtrip
found 2 days ago
Select American Airlines flight, departing Thu, Sep 11 from Champaign to St. Louis, returning Sun, Sep 14, priced at $568 found 2 days ago
Thu, Sep 11 - Sun, Sep 14
CMI
Champaign
STL
St. Louis
$578 Roundtrip, found 2 days ago
$578
Roundtrip
found 2 days ago
Select American Airlines flight, departing Thu, Sep 11 from Champaign to St. Louis, returning Sun, Sep 14, priced at $578 found 2 days ago
Thu, Sep 11 - Sun, Sep 14
CMI
Champaign
STL
St. Louis
$587 Roundtrip, found 2 days ago
$587
Roundtrip
found 2 days ago
Select American Airlines flight, departing Thu, Sep 11 from Champaign to St. Louis, returning Sun, Sep 14, priced at $587 found 2 days ago
Thu, Sep 11 - Sun, Sep 14
CMI
Champaign
STL
St. Louis
$588 Roundtrip, found 2 days ago
$588
Roundtrip
found 2 days ago
Select American Airlines flight, departing Thu, Sep 11 from Champaign to St. Louis, returning Sun, Sep 14, priced at $588 found 2 days ago
Thu, Sep 11 - Sun, Sep 14
CMI
Champaign
STL
St. Louis
$607 Roundtrip, found 2 days ago
$607
Roundtrip
found 2 days ago
Select American Airlines flight, departing Thu, Sep 11 from Champaign to St. Louis, returning Sun, Sep 14, priced at $607 found 2 days ago
Sun, Sep 14 - Sun, Sep 14
CMI
Champaign
STL
St. Louis
$608 Roundtrip, found 2 days ago
$608
Roundtrip
found 2 days ago
Select American Airlines flight, departing Sun, Sep 14 from Champaign to St. Louis, returning Sun, Sep 14, priced at $608 found 2 days ago
Thu, Sep 11 - Sun, Sep 14
CMI
Champaign
STL
St. Louis
$609 Roundtrip, found 2 days ago
$609
Roundtrip
found 2 days ago
Select American Airlines flight, departing Thu, Sep 11 from Champaign to St. Louis, returning Sun, Sep 14, priced at $609 found 2 days ago
American Airlines Airports
Hop on a(n) American Airlines flight today by flying to many destinations out of these domestic and international airports:
Airport code
Country
Airport name
Number of flights
DFWUSADallas-Fort Worth Intl.599
CLTUSACharlotte-Douglas Intl.536
ORDUSAO'Hare Intl.317
PHLUSAPhiladelphia Intl.247
MIAUSAMiami Intl.193
DCAUSARonald Reagan Washington National152
PHXUSASky Harbor Intl.141
LAXUSALos Angeles Intl.81
LGAUSALaGuardia72
BOSUSALogan Intl.57

Travelers ❤️ these 🏨 after their flight to St. Louis

Pear Tree Inn St. Louis Airport
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2.5 out of 5
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This hotel features a gym and a seasonal outdoor pool. Traveling on business? Take advantage of the business center, free WiFi in public areas, and free airport ...
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Reviewed on Apr 28, 2025

Pear Tree Inn St. Louis Airport
Hilton St. Louis Airport
Hilton St. Louis Airport
3.5 out of 5
10330 Natural Bridge Rd, St. Louis, MO
This smoke-free hotel features 2 restaurants, a bar/lounge, and a 24-hour gym. Traveling on business? Take advantage of the express check-in, express check-out, ...
7.4/10 Good! (1,004 reviews)
"Pleasant staff, nice facilities."

Reviewed on Apr 26, 2025

Hilton St. Louis Airport
Wingate by Wyndham St. Louis Airport
Wingate by Wyndham St. Louis Airport
2.5 out of 5
10820 Pear Tree Lane, St. Ann, MO
This hotel features an outdoor pool and a gym. Traveling on business? Take advantage of the business center, free WiFi in public areas, and free airport shuttle. ...
9.2/10 Wonderful! (1,198 reviews)
"Quiet and clean. Friendly and accommodating staff. Very professional crew."

Reviewed on Apr 26, 2025

Wingate by Wyndham St. Louis Airport
Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.