United Flight 5589 Deals & Information (2025/2026)

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United Flight 5589 Route Deals From $90

The cheapest prices found with in the last 7 days for return flights were $177 and $90 for one-way flights to Denver Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Sep 4 - Sun, Sep 7
TUS
Tucson Intl.
DEN
Denver Intl.
$177 Roundtrip, found 18 hours ago
$177
Roundtrip
found 18 hours ago
Select United flight, departing Thu, Sep 4 from Tucson Intl. to Denver Intl., returning Sun, Sep 7, priced at $177 found 18 hours ago
Thu, Aug 14 - Tue, Aug 19
TUS
Tucson Intl.
DEN
Denver Intl.
$210 Roundtrip, found 17 hours ago
$210
Roundtrip
found 17 hours ago
Select United flight, departing Thu, Aug 14 from Tucson Intl. to Denver Intl., returning Tue, Aug 19, priced at $210 found 17 hours ago
Wed, Oct 8 - Sat, Oct 11
TUS
Tucson Intl.
DEN
Denver Intl.
$221 Roundtrip, found 1 day ago
$221
Roundtrip
found 1 day ago
Select United flight, departing Wed, Oct 8 from Tucson Intl. to Denver Intl., returning Sat, Oct 11, priced at $221 found 1 day ago

Frequently asked questions

What route does flight number UA5589 take?
Flight number UA5589 flies straight from MSO to Denver, CO Airport (DEN-Denver Intl.). During this journey, you'll be in the air for 2 hours and 9 minutes. Book ahead to lock in your preferred seat.
What kind of plane is on flight number UA5589?
There's a strong chance you'll find yourself stepping on board a Bombardier CRJ if you're on flight UA5589. This flight nearly always departs from Missoula, MT Airport (MSO-Missoula Intl.) and comes in to land at 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 UA5589 flight with Travelocity, please visit our Customer Service Portal.