United Flight AA4423 Deals & Information (2025/2026)

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United Flight 4423 Route Deals From $39

The cheapest prices found with in the last 7 days for return flights were $77 and $39 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Sep 22 - Thu, Sep 25
STL
Lambert-St. Louis Intl.
ORD
O'Hare Intl.
$77 Roundtrip, found 1 day ago
$77
Roundtrip
found 1 day ago
Select United flight, departing Mon, Sep 22 from Lambert-St. Louis Intl. to O'Hare Intl., returning Thu, Sep 25, priced at $77 found 1 day ago
Tue, Aug 5 - Sat, Aug 9
STL
Lambert-St. Louis Intl.
ORD
O'Hare Intl.
$114 Roundtrip, found 7 hours ago
$114
Roundtrip
found 7 hours ago
Select United flight, departing Tue, Aug 5 from Lambert-St. Louis Intl. to O'Hare Intl., returning Sat, Aug 9, priced at $114 found 7 hours ago
Tue, Aug 5 - Sat, Aug 9
STL
Lambert-St. Louis Intl.
ORD
O'Hare Intl.
$116 Roundtrip, found 7 hours ago
$116
Roundtrip
found 7 hours ago
Select United flight, departing Tue, Aug 5 from Lambert-St. Louis Intl. to O'Hare Intl., returning Sat, Aug 9, priced at $116 found 7 hours ago
Thu, Oct 2 - Sat, Oct 4
STL
Lambert-St. Louis Intl.
ORD
O'Hare Intl.
$131 Roundtrip, found 3 days ago
$131
Roundtrip
found 3 days ago
Select United flight, departing Thu, Oct 2 from Lambert-St. Louis Intl. to O'Hare Intl., returning Sat, Oct 4, priced at $131 found 3 days ago
Thu, Aug 7 - Sun, Aug 10
STL
Lambert-St. Louis Intl.
ORD
O'Hare Intl.
$134 Roundtrip, found 4 days ago
$134
Roundtrip
found 4 days ago
Select United flight, departing Thu, Aug 7 from Lambert-St. Louis Intl. to O'Hare Intl., returning Sun, Aug 10, priced at $134 found 4 days ago
Mon, Sep 22 - Thu, Sep 25
STL
Lambert-St. Louis Intl.
ORD
O'Hare Intl.
$144 Roundtrip, found 1 day ago
$144
Roundtrip
found 1 day ago
Select United flight, departing Mon, Sep 22 from Lambert-St. Louis Intl. to O'Hare Intl., returning Thu, Sep 25, priced at $144 found 1 day ago
Tue, Aug 5 - Sat, Aug 9
STL
Lambert-St. Louis Intl.
ORD
O'Hare Intl.
$147 Roundtrip, found 7 hours ago
$147
Roundtrip
found 7 hours ago
Select United flight, departing Tue, Aug 5 from Lambert-St. Louis Intl. to O'Hare Intl., returning Sat, Aug 9, priced at $147 found 7 hours ago
Mon, Sep 22 - Thu, Sep 25
STL
Lambert-St. Louis Intl.
ORD
O'Hare Intl.
$153 Roundtrip, found 1 day ago
$153
Roundtrip
found 1 day ago
Select United flight, departing Mon, Sep 22 from Lambert-St. Louis Intl. to O'Hare Intl., returning Thu, Sep 25, priced at $153 found 1 day ago
Tue, Aug 5 - Sat, Aug 9
STL
Lambert-St. Louis Intl.
ORD
O'Hare Intl.
$164 Roundtrip, found 7 hours ago
$164
Roundtrip
found 7 hours ago
Select United flight, departing Tue, Aug 5 from Lambert-St. Louis Intl. to O'Hare Intl., returning Sat, Aug 9, priced at $164 found 7 hours ago

Frequently asked questions

What route does flight number UA4423 take?
UA4423 takes 1 hour and 23 minutes to jet straight from O'Hare Airport to Des Moines Intl. Airport (DSM). Sure, there's magic in the destination, but the journey is always half the fun!
What terminal does UA4423 fly out of?
Flight number UA4423 runs between ORD and Des Moines, IA Airport (DSM-Des Moines Intl.), and travelers taking this flight normally depart from Terminal 1.
What kind of plane is on flight number UA4423?
The Canadair (Bombardier) Regional Jet 550 is the type of plane most commonly used for flight UA4423. This flight typically leaves from O'Hare Intl. Airport (ORD) and arrives at Des Moines Intl. Airport (DSM).
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 UA4423 flight with Travelocity, please visit our Customer Service Portal.