United Flight UA5139 Deals & Information (2025/2026)

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United Flight 5139 Route Deals From $94

The cheapest prices found with in the last 7 days for return flights were $284 and $94 for one-way flights to Yellowstone for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Oct 3 - Mon, Oct 6
DEN
Denver Intl.
WYS
Yellowstone
$284 Roundtrip, found 2 days ago
$284
Roundtrip
found 2 days ago
Select United flight, departing Fri, Oct 3 from Denver Intl. to Yellowstone, returning Mon, Oct 6, priced at $284 found 2 days ago
Sat, Sep 20 - Sun, Sep 28
DEN
Denver Intl.
WYS
Yellowstone
$292 Roundtrip, found 1 day ago
$292
Roundtrip
found 1 day ago
Select United flight, departing Sat, Sep 20 from Denver Intl. to Yellowstone, returning Sun, Sep 28, priced at $292 found 1 day ago
Sun, Sep 21 - Mon, Sep 29
DEN
Denver Intl.
WYS
Yellowstone
$331 Roundtrip, found 1 day ago
$331
Roundtrip
found 1 day ago
Select United flight, departing Sun, Sep 21 from Denver Intl. to Yellowstone, returning Mon, Sep 29, priced at $331 found 1 day ago
Wed, Aug 6 - Wed, Aug 13
DEN
Denver Intl.
WYS
Yellowstone
$343 Roundtrip, found 16 hours ago
$343
Roundtrip
found 16 hours ago
Select United flight, departing Wed, Aug 6 from Denver Intl. to Yellowstone, returning Wed, Aug 13, priced at $343 found 16 hours ago
Sat, Sep 20 - Sun, Sep 28
DEN
Denver Intl.
WYS
Yellowstone
$435 Roundtrip, found 1 day ago
$435
Roundtrip
found 1 day ago
Select United flight, departing Sat, Sep 20 from Denver Intl. to Yellowstone, returning Sun, Sep 28, priced at $435 found 1 day ago
Sat, Sep 20 - Sun, Sep 28
DEN
Denver Intl.
WYS
Yellowstone
$485 Roundtrip, found 1 day ago
$485
Roundtrip
found 1 day ago
Select United flight, departing Sat, Sep 20 from Denver Intl. to Yellowstone, returning Sun, Sep 28, priced at $485 found 1 day ago
Sat, Sep 20 - Sun, Sep 28
DEN
Denver Intl.
WYS
Yellowstone
$496 Roundtrip, found 1 day ago
$496
Roundtrip
found 1 day ago
Select United flight, departing Sat, Sep 20 from Denver Intl. to Yellowstone, returning Sun, Sep 28, priced at $496 found 1 day ago
Wed, Aug 6 - Wed, Aug 13
DEN
Denver Intl.
WYS
Yellowstone
$500 Roundtrip, found 16 hours ago
$500
Roundtrip
found 16 hours ago
Select United flight, departing Wed, Aug 6 from Denver Intl. to Yellowstone, returning Wed, Aug 13, priced at $500 found 16 hours ago
Wed, Aug 6 - Wed, Aug 13
DEN
Denver Intl.
WYS
Yellowstone
$598 Roundtrip, found 16 hours ago
$598
Roundtrip
found 16 hours ago
Select United flight, departing Wed, Aug 6 from Denver Intl. to Yellowstone, returning Wed, Aug 13, priced at $598 found 16 hours ago
Sat, Sep 20 - Sun, Sep 28
DEN
Denver Intl.
WYS
Yellowstone
$629 Roundtrip, found 1 day ago
$629
Roundtrip
found 1 day ago
Select United flight, departing Sat, Sep 20 from Denver Intl. to Yellowstone, returning Sun, Sep 28, priced at $629 found 1 day 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.