United Flight 581 Deals & Information (2025/2026)

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United Flight 581 Route Deals From $69

The cheapest prices found with in the last 7 days for return flights were $137 and $69 for one-way flights to Denver Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Sep 3 - Thu, Sep 4
DSM
Des Moines Intl.
DEN
Denver Intl.
$137 Roundtrip, found 9 hours ago
$137
Roundtrip
found 9 hours ago
Select United flight, departing Wed, Sep 3 from Des Moines Intl. to Denver Intl., returning Thu, Sep 4, priced at $137 found 9 hours ago

Frequently asked questions

What route does flight number UA581 take?
UA581 is used on a range of routes. More commonly, UA581 flies directly from Houston, TX Airport (IAH-George Bush Intercontinental) to Miami, FL Airport (MIA-Miami Intl.). If that's your chosen flight path, you'll be in the air for roughly 2 hours and 25 minutes.
What terminal does UA581 fly out of?
UA581 flights out of IAH generally depart from Terminal C. This flight number runs on a number of different routes, but the most frequented one is IAH to Miami Intl. Airport (MIA).
What kind of plane is on flight number UA581?
It's more than likely you'll be traveling aboard an Airbus A320 if you've booked a fare on flight UA581 from Houston Airport to Miami, FL Airport (MIA-Miami Intl.). This is the most commonly used aircraft on this route.
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 UA581 flight with Travelocity, please visit our Customer Service Portal.