$54 Cheap Southwest Airlines flights San Francisco (SFO) to Las Vegas (LAS)

Finding cheap one-way Southwest Airlines flights from SFO to LAS from $54 on Expedia is a cinch — just filter by “Price (lowest to highest).” Alternatively, check out our affordable round-trip fares from $97 for your next break.**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 cheaper fares with Southwest Airlines during these quieter months.

Begin your search one to three months ahead of your travel date to score cheap fares on Southwest Airlines flights from San Francisco Intl. Airport (SFO) to Harry Reid Intl. Airport (LAS). You can save 25% by booking your domestic flight 34 to 86 days in advance versus last-minute reservations made 6 to 12 days out. You could also reduce costs by buying your fare on a Sunday, as it’s 6% cheaper on average than a Monday, the most expensive day to book.* Get the timing right, and you can enjoy significant savings on domestic journeys.*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.

Hop on one of Southwest Airlines’s 25 direct weekly flights from San Francisco Intl. Airport (SFO) to Harry Reid Intl. Airport (LAS). To see your options, enter your dates, destination and origin and hit search. Then apply the “Nonstop” and “Airline” filters.

From takeoff to touchdown, a nonstop Southwest Airlines flight from San Francisco Intl. Airport (SFO) to Harry Reid Intl. Airport (LAS) typically takes 1h 35m.

Southwest Airlines has the most flights from San Francisco Intl. Airport (SFO) to Harry Reid Intl. Airport (LAS) on Thursday. With up to 4 daily departures, you’ll get the most flexibility on this day.

The first flight from SFO to LAS with Southwest Airlines departs at 5:35AM UTC-8. You’ll touch down at 7:10AM UTC-8. The final Southwest Airlines flight of the day takes off at 8:00PM UTC-8 and arrives at 9:30PM UTC-8. With 20% fewer cancellations for morning and mid-morning flights, heading out early is usually the smartest option.**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.

Southwest Airlines flights from San Francisco Intl. Airport (SFO) to Las Vegas arrive at Harry Reid Intl. Airport (LAS). This is the main entry point to this city.

For the San Francisco Intl. Airport (SFO) to Harry Reid Intl. Airport (LAS) route, Southwest Airlines typically operates Boeing 737 MAX 8 and Boeing 737-700 planes. Keep in mind that last-minute changes are possible for operational needs, meaning your flight could be on another aircraft.

Depending on the type of fare you purchased, a fee will generally apply if you modify or cancel your booking more than 24 hours after confirmation. To secure plane tickets with more flexibility, select our “Changes included” and “No cancel fee” boxes when looking for flights. For additional information on changing or canceling your reservation, visit “Trips,” select your flight and tick “Manage Booking.”