United Flight 5500 Deals & Information (2026/2027)

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United Flight 5500 Route Deals From $499

The cheapest prices found with in the last 7 days for return flights were $209 and $499 for one-way flights to Denver Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Apr 22 - Sat, Apr 25
MSO
Missoula Intl.
DEN
Denver Intl.
$209 Roundtrip, found 4 days ago
$209
Roundtrip
found 4 days ago
Select United flight, departing Wed, Apr 22 from Missoula Intl. to Denver Intl., returning Sat, Apr 25, priced at $209 found 4 days ago
Thu, Mar 5 - Tue, Mar 10
MSO
Missoula Intl.
DEN
Denver Intl.
$212 Roundtrip, found 14 hours ago
$212
Roundtrip
found 14 hours ago
Select United flight, departing Thu, Mar 5 from Missoula Intl. to Denver Intl., returning Tue, Mar 10, priced at $212 found 14 hours ago
Fri, Apr 17 - Mon, Apr 20
MSO
Missoula Intl.
DEN
Denver Intl.
$215 Roundtrip, found 5 days ago
$215
Roundtrip
found 5 days ago
Select United flight, departing Fri, Apr 17 from Missoula Intl. to Denver Intl., returning Mon, Apr 20, priced at $215 found 5 days ago
Fri, Apr 17 - Mon, Apr 27
MSO
Missoula Intl.
DEN
Denver Intl.
$229 Roundtrip, found 5 days ago
$229
Roundtrip
found 5 days ago
Select United flight, departing Fri, Apr 17 from Missoula Intl. to Denver Intl., returning Mon, Apr 27, priced at $229 found 5 days ago
Thu, Feb 12 - Mon, Feb 16
MSO
Missoula Intl.
DEN
Denver Intl.
$235 Roundtrip, found 2 days ago
$235
Roundtrip
found 2 days ago
Select United flight, departing Thu, Feb 12 from Missoula Intl. to Denver Intl., returning Mon, Feb 16, priced at $235 found 2 days ago
Thu, Mar 12 - Thu, Mar 19
MSO
Missoula Intl.
DEN
Denver Intl.
$242 Roundtrip, found 6 days ago
$242
Roundtrip
found 6 days ago
Select United flight, departing Thu, Mar 12 from Missoula Intl. to Denver Intl., returning Thu, Mar 19, priced at $242 found 6 days ago
Fri, Jun 12 - Tue, Jun 16
MSO
Missoula Intl.
DEN
Denver Intl.
$247 Roundtrip, found 5 days ago
$247
Roundtrip
found 5 days ago
Select United flight, departing Fri, Jun 12 from Missoula Intl. to Denver Intl., returning Tue, Jun 16, priced at $247 found 5 days ago
Thu, Mar 12 - Thu, Mar 19
MSO
Missoula Intl.
DEN
Denver Intl.
$251 Roundtrip, found 6 days ago
$251
Roundtrip
found 6 days ago
Select United flight, departing Thu, Mar 12 from Missoula Intl. to Denver Intl., returning Thu, Mar 19, priced at $251 found 6 days ago
Fri, Apr 24 - Mon, May 4
MSO
Missoula Intl.
DEN
Denver Intl.
$252 Roundtrip, found 5 days ago
$252
Roundtrip
found 5 days ago
Select United flight, departing Fri, Apr 24 from Missoula Intl. to Denver Intl., returning Mon, May 4, priced at $252 found 5 days ago
Thu, Feb 12 - Mon, Feb 16
MSO
Missoula Intl.
DEN
Denver Intl.
$254 Roundtrip, found 2 days ago
$254
Roundtrip
found 2 days ago
Select United flight, departing Thu, Feb 12 from Missoula Intl. to Denver Intl., returning Mon, Feb 16, priced at $254 found 2 days ago
Thu, Mar 5 - Tue, Mar 10
MSO
Missoula Intl.
DEN
Denver Intl.
$283 Roundtrip, found 14 hours ago
$283
Roundtrip
found 14 hours ago
Select United flight, departing Thu, Mar 5 from Missoula Intl. to Denver Intl., returning Tue, Mar 10, priced at $283 found 14 hours ago

Frequently asked questions

What route does flight number UA5500 take?
UA5500 operates direct from Houston Airport to Pitkin County Airport (ASE). During this trip, you'll be in the air for about 2 hours and 35 minutes. Consider booking ahead to lock in your preferred seat.
What terminal does UA5500 fly out of?
You'll likely be boarding the plane from Terminal B if you're booked on flight UA5500 direct from George Bush Intercontinental Airport (IAH) to ASE.
What kind of plane is on flight number UA5500?
The route for flight number UA5500 is most commonly George Bush Intercontinental Airport (IAH) to Pitkin County Airport (ASE), and the Bombardier CRJ700 is the type of aircraft you're likely to be traveling aboard.
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 UA5500 flight with Travelocity, please visit our Customer Service Portal.