$151 Cheap United flights Philadelphia (PHL) to Las Vegas (LAS)

You’ll discover affordable round-trip United Airlines flights from $296 from PHL to LAS by organizing your results from “Price (lowest to highest)” on Expedia. Or search for deals from $151 for a one-way trip.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Browse for return or one-way flights to Las Vegas in January or June. You could find a cheap fare with United Airlines during these off-peak months.

Search for affordable United Airlines flights from Philadelphia Intl. Airport (PHL) to Harry Reid Intl. Airport (LAS) one to three months ahead of your departure date. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. Regardless of fare type and journey, the best day to book a domestic flight is generally Sunday and the most expensive is typically Monday. Passengers who book on a Sunday can save 6% on average compared to those who book their travel on a Monday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

Click on our “Nonstop” filter when looking for direct United Airlines flights from PHL to LAS. It’s also an easy way to compare other airlines servicing the same direct route.

Filter your results by “Early Morning” and “Morning” to browse the earliest flights from PHL to LAS. Setting off early means flight cancellations are less likely.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

United Airlines flights from Philadelphia Intl. Airport (PHL) to Las Vegas touch down at Harry Reid Intl. Airport (LAS). This is the main entry point to this destination.

Depart from PHL to LAS with United Airlines and you’ll enjoy a range of benefits starting with a rewarding loyalty program. When booking through Expedia as a United Mileage Plus and One Key™ member, you could also earn OneKeyCash™* to spend on select future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Depending on the ticket type you purchased, a fee is typically charged if you change or cancel your flight more than 24 hours after it’s confirmed. To find flexible fares, select our “Changes included” and “No cancel fee” boxes when looking for flights. For more details on changing or canceling your reservation, go to “Trips,” select your flight and click on “Manage Booking.”