United Flight 5021 Deals & Information (2025/2026)

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United Flight 5021 Route Deals From $208

The cheapest prices found with in the last 7 days for return flights were $308 and $208 for one-way flights to Yellowstone Regional for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Oct 18 - Mon, Oct 20
DEN
Denver Intl.
COD
Yellowstone Regional
$308 Roundtrip, found 6 days ago
$308
Roundtrip
found 6 days ago
Select United flight, departing Sat, Oct 18 from Denver Intl. to Yellowstone Regional, returning Mon, Oct 20, priced at $308 found 6 days ago
Fri, Oct 24 - Sun, Oct 26
DEN
Denver Intl.
COD
Yellowstone Regional
$323 Roundtrip, found 6 days ago
$323
Roundtrip
found 6 days ago
Select United flight, departing Fri, Oct 24 from Denver Intl. to Yellowstone Regional, returning Sun, Oct 26, priced at $323 found 6 days ago
Sat, Oct 18 - Mon, Oct 20
DEN
Denver Intl.
COD
Yellowstone Regional
$360 Roundtrip, found 6 days ago
$360
Roundtrip
found 6 days ago
Select United flight, departing Sat, Oct 18 from Denver Intl. to Yellowstone Regional, returning Mon, Oct 20, priced at $360 found 6 days ago
Sat, Oct 18 - Mon, Oct 20
DEN
Denver Intl.
COD
Yellowstone Regional
$402 Roundtrip, found 6 days ago
$402
Roundtrip
found 6 days ago
Select United flight, departing Sat, Oct 18 from Denver Intl. to Yellowstone Regional, returning Mon, Oct 20, priced at $402 found 6 days ago
Fri, Nov 7 - Sun, Nov 9
DEN
Denver Intl.
COD
Yellowstone Regional
$406 Roundtrip, found 6 days ago
$406
Roundtrip
found 6 days ago
Select United flight, departing Fri, Nov 7 from Denver Intl. to Yellowstone Regional, returning Sun, Nov 9, priced at $406 found 6 days ago
Fri, Oct 17 - Sun, Oct 19
DEN
Denver Intl.
COD
Yellowstone Regional
$439 Roundtrip, found 6 days ago
$439
Roundtrip
found 6 days ago
Select United flight, departing Fri, Oct 17 from Denver Intl. to Yellowstone Regional, returning Sun, Oct 19, priced at $439 found 6 days ago
Sat, Oct 18 - Mon, Oct 20
DEN
Denver Intl.
COD
Yellowstone Regional
$453 Roundtrip, found 6 days ago
$453
Roundtrip
found 6 days ago
Select United flight, departing Sat, Oct 18 from Denver Intl. to Yellowstone Regional, returning Mon, Oct 20, priced at $453 found 6 days ago
Mon, Nov 10 - Sat, Nov 15
DEN
Denver Intl.
COD
Yellowstone Regional
$470 Roundtrip, found 4 days ago
$470
Roundtrip
found 4 days ago
Select United flight, departing Mon, Nov 10 from Denver Intl. to Yellowstone Regional, returning Sat, Nov 15, priced at $470 found 4 days ago
Fri, Oct 17 - Sun, Oct 19
DEN
Denver Intl.
COD
Yellowstone Regional
$506 Roundtrip, found 6 days ago
$506
Roundtrip
found 6 days ago
Select United flight, departing Fri, Oct 17 from Denver Intl. to Yellowstone Regional, returning Sun, Oct 19, priced at $506 found 6 days ago
Tue, Oct 7 - Wed, Oct 8
DEN
Denver Intl.
COD
Yellowstone Regional
$516 Roundtrip, found 2 days ago
$516
Roundtrip
found 2 days ago
Select United flight, departing Tue, Oct 7 from Denver Intl. to Yellowstone Regional, returning Wed, Oct 8, priced at $516 found 2 days ago
Mon, Nov 10 - Sat, Nov 15
DEN
Denver Intl.
COD
Yellowstone Regional
$517 Roundtrip, found 4 days ago
$517
Roundtrip
found 4 days ago
Select United flight, departing Mon, Nov 10 from Denver Intl. to Yellowstone Regional, returning Sat, Nov 15, priced at $517 found 4 days ago
Tue, Oct 7 - Wed, Oct 8
DEN
Denver Intl.
COD
Yellowstone Regional
$926 Roundtrip, found 2 days ago
$926
Roundtrip
found 2 days ago
Select United flight, departing Tue, Oct 7 from Denver Intl. to Yellowstone Regional, returning Wed, Oct 8, priced at $926 found 2 days ago
Mon, Nov 10 - Sat, Nov 15
DEN
Denver Intl.
COD
Yellowstone Regional
$928 Roundtrip, found 4 days ago
$928
Roundtrip
found 4 days ago
Select United flight, departing Mon, Nov 10 from Denver Intl. to Yellowstone Regional, returning Sat, Nov 15, priced at $928 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.