$159 Cheap United flights San Antonio (SAT) to Las Vegas (LAS)

You’ll discover cheap round-trip United Airlines flights from $312 from SAT to LAS by filtering your results from “Price (lowest to highest)” on Expedia. Or look for deals from $159 for a one-way journey.**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 one-way or round-trip flights to Las Vegas in January or June. You could find a cheap fare with United Airlines during these off-peak months.

To find cheap United Airlines fares from San Antonio Intl. Airport (SAT) to Harry Reid Intl. Airport (LAS), start searching one to three months before your planned departure. Securing domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also influence the overall cost. Sunday tends to be the cheapest, while Monday is often the most expensive for domestic flights. You can save 6% on average by choosing to book on a Sunday.**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.

Simply enter your dates, click search and select “Nonstop” on Expedia to find any direct flights from SAT to LAS with United Airlines or other carriers.

Find United Airlines’s earliest flights from SAT to LAS by selecting the “Early Morning” and “Morning” filters. Not only will you arrive sooner, early departures also have a 20% less chance of being canceled.**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 San Antonio Intl. Airport (SAT) to Las Vegas arrive at Harry Reid Intl. Airport (LAS). This is the main entry point to this destination.

A rewarding loyalty program and the ability to collect points through United Mileage Plus are the start of the reasons to fly from SAT to LAS with United Airlines. Plus, when you join our One Key™ program, you can receive OneKeyCash™* alongside any airline loyalty program earnings. It’s yours to spend on future bookings.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Typically, you can cancel or modify your flight, although additional charges may apply if your booking was made over 24 hours ago. Want to keep your options open? Make use of Expedia’s “No cancel fee” or “Changes included” filter to find flights that won’t penalize you if you have to revise your plans. To update your itinerary, go to “Trips,” select your flight and click on “Manage Booking” for more details.