United Flight UA5139 Deals & Information (2025/2026)

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United Flight 5139 Route Deals From $199

The cheapest prices found with in the last 7 days for return flights were $190 and $199 for one-way flights to Yellowstone for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Oct 4 - Thu, Oct 9
DEN
Denver Intl.
WYS
Yellowstone
$190 Roundtrip, found 3 days ago
$190
Roundtrip
found 3 days ago
Select United flight, departing Sat, Oct 4 from Denver Intl. to Yellowstone, returning Thu, Oct 9, priced at $190 found 3 days ago
Sat, Oct 4 - Thu, Oct 9
DEN
Denver Intl.
WYS
Yellowstone
$210 Roundtrip, found 3 days ago
$210
Roundtrip
found 3 days ago
Select United flight, departing Sat, Oct 4 from Denver Intl. to Yellowstone, returning Thu, Oct 9, priced at $210 found 3 days ago
Sat, Oct 4 - Thu, Oct 9
DEN
Denver Intl.
WYS
Yellowstone
$220 Roundtrip, found 3 days ago
$220
Roundtrip
found 3 days ago
Select United flight, departing Sat, Oct 4 from Denver Intl. to Yellowstone, returning Thu, Oct 9, priced at $220 found 3 days ago
Sat, Oct 4 - Thu, Oct 9
DEN
Denver Intl.
WYS
Yellowstone
$240 Roundtrip, found 3 days ago
$240
Roundtrip
found 3 days ago
Select United flight, departing Sat, Oct 4 from Denver Intl. to Yellowstone, returning Thu, Oct 9, priced at $240 found 3 days ago
Sat, Oct 4 - Thu, Oct 9
DEN
Denver Intl.
WYS
Yellowstone
$790 Roundtrip, found 3 days ago
$790
Roundtrip
found 3 days ago
Select United flight, departing Sat, Oct 4 from Denver Intl. to Yellowstone, returning Thu, Oct 9, priced at $790 found 3 days ago

Frequently asked questions

What route does flight number UA5139 take?
UA5139 takes multiple routes. The most frequently flown is between O'Hare Intl. Airport (ORD) and Mason City, IA Airport (MCW-Mason City Municipal), which is a direct flight. This flight takes around 1 hour and 30 minutes. However, you might find other flights with the same number that are multi-stop.
What terminal does UA5139 fly out of?
Terminal 2 is where you'll most likely jet off from if you're booked on a flight from ORD. ORD to Mason City Municipal Airport is the most popular route for flight number UA5139.
What kind of plane is on flight number UA5139?
If you're taking flight UA5139 from O'Hare Airport to Mason City Municipal Airport, you're likely to be cruising aboard the Bombardier CRJ. This flight number serves multiple routes, but this is the most popular one.
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 UA5139 flight with Travelocity, please visit our Customer Service Portal.