United Flight WN1252 Deals & Information (2025/2026)

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United Flight 1252 Route Deals From $95

The cheapest prices found with in the last 7 days for return flights were $189 and $95 for one-way flights to Denver Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Sep 2 - Sat, Sep 6
PHL
Philadelphia Intl.
DEN
Denver Intl.
$189 Roundtrip, found 17 hours ago
$189
Roundtrip
found 17 hours ago
Select United flight, departing Tue, Sep 2 from Philadelphia Intl. to Denver Intl., returning Sat, Sep 6, priced at $189 found 17 hours ago
Tue, Sep 9 - Sat, Sep 13
PHL
Philadelphia Intl.
DEN
Denver Intl.
$193 Roundtrip, found 2 days ago
$193
Roundtrip
found 2 days ago
Select United flight, departing Tue, Sep 9 from Philadelphia Intl. to Denver Intl., returning Sat, Sep 13, priced at $193 found 2 days ago
Sat, Sep 27 - Thu, Oct 2
PHL
Philadelphia Intl.
DEN
Denver Intl.
$203 Roundtrip, found 1 day ago
$203
Roundtrip
found 1 day ago
Select United flight, departing Sat, Sep 27 from Philadelphia Intl. to Denver Intl., returning Thu, Oct 2, priced at $203 found 1 day ago
Wed, Sep 10 - Mon, Sep 15
PHL
Philadelphia Intl.
DEN
Denver Intl.
$217 Roundtrip, found 3 hours ago
$217
Roundtrip
found 3 hours ago
Select United flight, departing Wed, Sep 10 from Philadelphia Intl. to Denver Intl., returning Mon, Sep 15, priced at $217 found 3 hours ago
Sun, Aug 24 - Wed, Sep 3
PHL
Philadelphia Intl.
DEN
Denver Intl.
$217 Roundtrip, found 6 hours ago
$217
Roundtrip
found 6 hours ago
Select United flight, departing Sun, Aug 24 from Philadelphia Intl. to Denver Intl., returning Wed, Sep 3, priced at $217 found 6 hours ago
Fri, Jul 4 - Tue, Jul 8
PHL
Philadelphia Intl.
DEN
Denver Intl.
$223 Roundtrip, found 1 day ago
$223
Roundtrip
found 1 day ago
Select United flight, departing Fri, Jul 4 from Philadelphia Intl. to Denver Intl., returning Tue, Jul 8, priced at $223 found 1 day ago
Tue, Sep 9 - Sat, Sep 13
PHL
Philadelphia Intl.
DEN
Denver Intl.
$228 Roundtrip, found 2 days ago
$228
Roundtrip
found 2 days ago
Select United flight, departing Tue, Sep 9 from Philadelphia Intl. to Denver Intl., returning Sat, Sep 13, priced at $228 found 2 days ago
Thu, Sep 4 - Mon, Sep 8
PHL
Philadelphia Intl.
DEN
Denver Intl.
$241 Roundtrip, found 1 hour ago
$241
Roundtrip
found 1 hour ago
Select United flight, departing Thu, Sep 4 from Philadelphia Intl. to Denver Intl., returning Mon, Sep 8, priced at $241 found 1 hour ago

Frequently asked questions

What route does flight number UA1252 take?
UA1252 operates straight from IAH to McCarran Airport. During this journey, you can expect to be in the air for approximately 3 hours and 24 minutes. It’s wise to book ahead to get your favorite seat.
How often is UA1252 on time?
United Airlines flight number UA1252 from IAH to McCarran Intl. Airport (LAS) runs on schedule 88% of the time — so you can rest easy knowing you will get to your destination ASAP. If your service is late, you can expect to wait approximately 13 minutes. This route has a 4.15-star rating.
What terminal does UA1252 fly out of?
Flight number UA1252 runs between George Bush Intercontinental Airport (IAH) and LAS, and passengers booked on this flight generally board the aircraft from Terminal C.
What kind of plane is on flight number UA1252?
The Boeing 737-800 is the aircraft type most frequently used for flight UA1252. This flight almost always takes off from George Bush Intercontinental Airport (IAH) and touches down at Las Vegas, NV Airport (LAS-McCarran Intl.).
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 UA1252 flight with Travelocity, please visit our Customer Service Portal.