United Flight 5021 Deals & Information (2025/2026)

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United Flight 5021 Route Deals From $214

The cheapest prices found with in the last 7 days for return flights were $516 and $214 for one-way flights to Yellowstone Regional for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Oct 7 - Wed, Oct 8
DEN
Denver Intl.
COD
Yellowstone Regional
$516 Roundtrip, found 4 days ago
$516
Roundtrip
found 4 days ago
Select United flight, departing Tue, Oct 7 from Denver Intl. to Yellowstone Regional, returning Wed, Oct 8, priced at $516 found 4 days ago
Tue, Oct 7 - Wed, Oct 8
DEN
Denver Intl.
COD
Yellowstone Regional
$926 Roundtrip, found 4 days ago
$926
Roundtrip
found 4 days ago
Select United flight, departing Tue, Oct 7 from Denver Intl. to Yellowstone Regional, returning Wed, Oct 8, priced at $926 found 4 days ago

Frequently asked questions

What route does flight number UA5021 take?
UA5021 takes a number of routes. The most popular is ATY to ORD, which flies direct. This flight typically takes 1 hour and 38 minutes. However, you might find other flights with the same number that have one or more stops.
What kind of plane is on flight number UA5021?
It's highly likely you'll be cruising aboard the Bombardier CRJ if you've reserved a ticket on flight UA5021 from ATY to O'Hare Intl. Airport (ORD). This is the most commonly used aircraft type on this popular 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 UA5021 flight with Travelocity, please visit our Customer Service Portal.