United Flight AA4638 Deals & Information (2025/2026)

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United Flight 4638 Route Deals From $53

The cheapest prices found with in the last 7 days for return flights were $121 and $53 for one-way flights to Colorado Springs for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Nov 1 - Wed, Nov 12
ORD
O'Hare Intl.
COS
Colorado Springs
$121 Roundtrip, found 5 days ago
$121
Roundtrip
found 5 days ago
Select United flight, departing Sat, Nov 1 from O'Hare Intl. to Colorado Springs, returning Wed, Nov 12, priced at $121 found 5 days ago
Sun, Aug 17 - Wed, Aug 20
ORD
O'Hare Intl.
COS
Colorado Springs
$122 Roundtrip, found 5 days ago
$122
Roundtrip
found 5 days ago
Select United flight, departing Sun, Aug 17 from O'Hare Intl. to Colorado Springs, returning Wed, Aug 20, priced at $122 found 5 days ago
Sat, Sep 20 - Tue, Sep 30
ORD
O'Hare Intl.
COS
Colorado Springs
$129 Roundtrip, found 3 days ago
$129
Roundtrip
found 3 days ago
Select United flight, departing Sat, Sep 20 from O'Hare Intl. to Colorado Springs, returning Tue, Sep 30, priced at $129 found 3 days ago
Sun, Aug 17 - Wed, Aug 20
ORD
O'Hare Intl.
COS
Colorado Springs
$132 Roundtrip, found 5 days ago
$132
Roundtrip
found 5 days ago
Select United flight, departing Sun, Aug 17 from O'Hare Intl. to Colorado Springs, returning Wed, Aug 20, priced at $132 found 5 days ago
Sat, Aug 16 - Tue, Aug 19
ORD
O'Hare Intl.
COS
Colorado Springs
$135 Roundtrip, found 4 days ago
$135
Roundtrip
found 4 days ago
Select United flight, departing Sat, Aug 16 from O'Hare Intl. to Colorado Springs, returning Tue, Aug 19, priced at $135 found 4 days ago
Sat, Sep 20 - Tue, Sep 30
ORD
O'Hare Intl.
COS
Colorado Springs
$144 Roundtrip, found 3 days ago
$144
Roundtrip
found 3 days ago
Select United flight, departing Sat, Sep 20 from O'Hare Intl. to Colorado Springs, returning Tue, Sep 30, priced at $144 found 3 days ago
Sun, Sep 21 - Tue, Sep 30
ORD
O'Hare Intl.
COS
Colorado Springs
$149 Roundtrip, found 3 days ago
$149
Roundtrip
found 3 days ago
Select United flight, departing Sun, Sep 21 from O'Hare Intl. to Colorado Springs, returning Tue, Sep 30, priced at $149 found 3 days ago
Wed, Nov 5 - Sat, Nov 15
ORD
O'Hare Intl.
COS
Colorado Springs
$151 Roundtrip, found 6 days ago
$151
Roundtrip
found 6 days ago
Select United flight, departing Wed, Nov 5 from O'Hare Intl. to Colorado Springs, returning Sat, Nov 15, priced at $151 found 6 days ago
Sun, Sep 21 - Tue, Sep 30
ORD
O'Hare Intl.
COS
Colorado Springs
$153 Roundtrip, found 3 days ago
$153
Roundtrip
found 3 days ago
Select United flight, departing Sun, Sep 21 from O'Hare Intl. to Colorado Springs, returning Tue, Sep 30, priced at $153 found 3 days ago
Sun, Sep 21 - Thu, Sep 25
ORD
O'Hare Intl.
COS
Colorado Springs
$157 Roundtrip, found 3 days ago
$157
Roundtrip
found 3 days ago
Select United flight, departing Sun, Sep 21 from O'Hare Intl. to Colorado Springs, returning Thu, Sep 25, priced at $157 found 3 days ago

Frequently asked questions

What route does flight number UA4638 take?
UA4638 flies direct between Albuquerque, NM Airport (ABQ-Albuquerque Intl. Sunport) and San Francisco Airport in roughly 2 hours and 36 minutes. It can take other routes though, some of which may be multi-stop trips. Keep an eye out for this when locking in your seat to avoid any mix-ups.
What kind of plane is on flight number UA4638?
UA4638 is a flight number that is used on many different routes. If you're traveling on the most common route, Albuquerque Intl. Sunport Airport (ABQ) to SFO, chances are you'll be hopping on board a Bombardier CRJ.
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 UA4638 flight with Travelocity, please visit our Customer Service Portal.