United Flight AA3654 Deals & Information (2025/2026)

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United Flight 3654 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 Lambert-St. Louis Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Nov 5 - Tue, Nov 18
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$77 Roundtrip, found 16 hours ago
$77
Roundtrip
found 16 hours ago
Select United flight, departing Wed, Nov 5 from O'Hare Intl. to Lambert-St. Louis Intl., returning Tue, Nov 18, priced at $77 found 16 hours ago
Wed, Nov 5 - Wed, Nov 19
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$84 Roundtrip, found 9 hours ago
$84
Roundtrip
found 9 hours ago
Select United flight, departing Wed, Nov 5 from O'Hare Intl. to Lambert-St. Louis Intl., returning Wed, Nov 19, priced at $84 found 9 hours ago
Wed, Aug 20 - Thu, Aug 21
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$93 Roundtrip, found 14 hours ago
$93
Roundtrip
found 14 hours ago
Select United flight, departing Wed, Aug 20 from O'Hare Intl. to Lambert-St. Louis Intl., returning Thu, Aug 21, priced at $93 found 14 hours ago
Wed, Nov 5 - Wed, Nov 19
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$107 Roundtrip, found 9 hours ago
$107
Roundtrip
found 9 hours ago
Select United flight, departing Wed, Nov 5 from O'Hare Intl. to Lambert-St. Louis Intl., returning Wed, Nov 19, priced at $107 found 9 hours ago
Wed, Nov 5 - Wed, Nov 19
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$116 Roundtrip, found 9 hours ago
$116
Roundtrip
found 9 hours ago
Select United flight, departing Wed, Nov 5 from O'Hare Intl. to Lambert-St. Louis Intl., returning Wed, Nov 19, priced at $116 found 9 hours ago
Sat, Aug 30 - Tue, Sep 2
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$123 Roundtrip, found 4 days ago
$123
Roundtrip
found 4 days ago
Select United flight, departing Sat, Aug 30 from O'Hare Intl. to Lambert-St. Louis Intl., returning Tue, Sep 2, priced at $123 found 4 days ago
Wed, Aug 20 - Thu, Aug 21
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$127 Roundtrip, found 14 hours ago
$127
Roundtrip
found 14 hours ago
Select United flight, departing Wed, Aug 20 from O'Hare Intl. to Lambert-St. Louis Intl., returning Thu, Aug 21, priced at $127 found 14 hours ago
Wed, Nov 5 - Tue, Nov 18
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$137 Roundtrip, found 16 hours ago
$137
Roundtrip
found 16 hours ago
Select United flight, departing Wed, Nov 5 from O'Hare Intl. to Lambert-St. Louis Intl., returning Tue, Nov 18, priced at $137 found 16 hours ago
Wed, Aug 20 - Thu, Aug 21
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$144 Roundtrip, found 14 hours ago
$144
Roundtrip
found 14 hours ago
Select United flight, departing Wed, Aug 20 from O'Hare Intl. to Lambert-St. Louis Intl., returning Thu, Aug 21, priced at $144 found 14 hours ago
Mon, Oct 6 - Fri, Oct 10
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$149 Roundtrip, found 1 day ago
$149
Roundtrip
found 1 day ago
Select United flight, departing Mon, Oct 6 from O'Hare Intl. to Lambert-St. Louis Intl., returning Fri, Oct 10, priced at $149 found 1 day ago
Wed, Aug 20 - Thu, Aug 21
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$153 Roundtrip, found 14 hours ago
$153
Roundtrip
found 14 hours ago
Select United flight, departing Wed, Aug 20 from O'Hare Intl. to Lambert-St. Louis Intl., returning Thu, Aug 21, priced at $153 found 14 hours ago
Thu, Aug 21 - Fri, Aug 22
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$154 Roundtrip, found 14 hours ago
$154
Roundtrip
found 14 hours ago
Select United flight, departing Thu, Aug 21 from O'Hare Intl. to Lambert-St. Louis Intl., returning Fri, Aug 22, priced at $154 found 14 hours ago

Frequently asked questions

What route does flight number UA3654 take?
You'll be landing at ORD from IND if you've booked a ticket on flight number UA3654. You'll be in the sky for 1 hour and 10 minutes on this trip. It's also worthwhile noting that the service conveniently operates non-stop.
What kind of plane is on flight number UA3654?
There's a strong chance you'll be jumping on board an Embraer 170 if you have a seat on flight UA3654. This flight nearly always heads off from IND and lands at ORD.
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 UA3654 flight with Travelocity, please visit our Customer Service Portal.