United Flight WN621 Deals & Information (2025/2026)

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United Flight 621 Route Deals From $105

The cheapest prices found with in the last 7 days for return flights were $219 and $105 for one-way flights to Denver Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Sep 12 - Mon, Sep 15
ABQ
Albuquerque Intl. Sunport
DEN
Denver Intl.
$219 Roundtrip, found 1 day ago
$219
Roundtrip
found 1 day ago
Select United flight, departing Fri, Sep 12 from Albuquerque Intl. Sunport to Denver Intl., returning Mon, Sep 15, priced at $219 found 1 day ago
Fri, Aug 29 - Mon, Sep 1
ABQ
Albuquerque Intl. Sunport
DEN
Denver Intl.
$225 Roundtrip, found 2 days ago
$225
Roundtrip
found 2 days ago
Select United flight, departing Fri, Aug 29 from Albuquerque Intl. Sunport to Denver Intl., returning Mon, Sep 1, priced at $225 found 2 days ago
Tue, Jul 22 - Sat, Jul 26
ABQ
Albuquerque Intl. Sunport
DEN
Denver Intl.
$231 Roundtrip, found 14 hours ago
$231
Roundtrip
found 14 hours ago
Select United flight, departing Tue, Jul 22 from Albuquerque Intl. Sunport to Denver Intl., returning Sat, Jul 26, priced at $231 found 14 hours ago
Tue, Jul 22 - Sat, Jul 26
ABQ
Albuquerque Intl. Sunport
DEN
Denver Intl.
$262 Roundtrip, found 14 hours ago
$262
Roundtrip
found 14 hours ago
Select United flight, departing Tue, Jul 22 from Albuquerque Intl. Sunport to Denver Intl., returning Sat, Jul 26, priced at $262 found 14 hours ago
Tue, Jul 8 - Fri, Jul 11
ABQ
Albuquerque Intl. Sunport
DEN
Denver Intl.
$264 Roundtrip, found 20 hours ago
$264
Roundtrip
found 20 hours ago
Select United flight, departing Tue, Jul 8 from Albuquerque Intl. Sunport to Denver Intl., returning Fri, Jul 11, priced at $264 found 20 hours ago
Sat, Jul 5 - Sun, Jul 6
ABQ
Albuquerque Intl. Sunport
DEN
Denver Intl.
$275 Roundtrip, found 6 hours ago
$275
Roundtrip
found 6 hours ago
Select United flight, departing Sat, Jul 5 from Albuquerque Intl. Sunport to Denver Intl., returning Sun, Jul 6, priced at $275 found 6 hours ago

Frequently asked questions

What route does flight number UA621 take?
UA621 travels from Salt Lake City Intl. Airport (SLC) to DIA airport and is a direct flight. This service typically takes 1 hour and 32 minutes.
What kind of plane is on flight number UA621?
The Airbus A319 is the type of aircraft most commonly used for flight number UA621. This flight typically takes off from Salt Lake City, UT Airport (SLC-Salt Lake City Intl.) and touches down at Denver Intl. Airport (DEN).
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 UA621 flight with Travelocity, please visit our Customer Service Portal.