$49 Cheap Southwest Airlines flights San Jose (SJC) to Las Vegas (LAS)

Apply the "Price (lowest to highest)" filter on Expedia to look for cheap Southwest Airlines round-trip flights from $95 from SJC to LAS. Affordable one-way tickets from $49 are available too.**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.

For cheap Southwest Airlines fares from Norman Y. Mineta San Jose Intl. Airport (SJC) to Harry Reid Intl. Airport (LAS), start searching one to three months before your planned departure. Reserving 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 cost. Sunday is typically the cheapest, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your journey 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.

The first Southwest Airlines flight from SJC to LAS takes off at 6:45AM UTC-8, arriving at 8:15AM UTC-8. If you want to jet off later in the day, the last Southwest Airlines flight leaves SJC at 8:15PM UTC-8 and touches down at LAS at 9:40PM UTC-8. Flying before noon is generally a good idea as morning and mid-morning flights are less likely to experience cancellations.**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.