United Flight 5239 Deals & Information (2025/2026)

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United Flight 5239 Route Deals From $109

The cheapest prices found with in the last 7 days for return flights were $178 and $109 for one-way flights to Denver Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Aug 22 - Mon, Aug 25
FAR
Hector Intl.
DEN
Denver Intl.
$178 Roundtrip, found 12 hours ago
$178
Roundtrip
found 12 hours ago
Select United flight, departing Fri, Aug 22 from Hector Intl. to Denver Intl., returning Mon, Aug 25, priced at $178 found 12 hours ago
Fri, Aug 22 - Mon, Aug 25
FAR
Hector Intl.
DEN
Denver Intl.
$198 Roundtrip, found 12 hours ago
$198
Roundtrip
found 12 hours ago
Select United flight, departing Fri, Aug 22 from Hector Intl. to Denver Intl., returning Mon, Aug 25, priced at $198 found 12 hours ago
Wed, Aug 20 - Sat, Aug 23
FAR
Hector Intl.
DEN
Denver Intl.
$209 Roundtrip, found 1 day ago
$209
Roundtrip
found 1 day ago
Select United flight, departing Wed, Aug 20 from Hector Intl. to Denver Intl., returning Sat, Aug 23, priced at $209 found 1 day ago

Frequently asked questions

What route does flight number UA5239 take?
UA5239 serves multiple routes, but the most common is between Lambert Field and ORD. If your flight goes direct, you’ll land in around 1 hour and 17 minutes. Multi-stop flights can also operate under the same number, as can services on other routes.
What terminal does UA5239 fly out of?
Terminal 1 is where you’ll most likely jet off from if you’re booked on a flight from Lambert Field. Lambert-St. Louis Intl. Airport (STL) to O’Hare Intl. Airport (ORD) is the most popular route for flight number UA5239.
What kind of plane is on flight number UA5239?
Chances are you’ll be aboard the Embraer 175 if you’ve booked a ticket from Lambert Field to O’Hare Intl. Airport (ORD), a common route for flight number UA5239.
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 UA5239 flight with Travelocity, please visit our Customer Service Portal.