$69 Cheap Southwest Airlines flights Phoenix (PHX) to Las Vegas (LAS)

Finding cheap one-way Southwest Airlines flights from PHX to LAS from $69 on Expedia is a cinch --- just filter by "Price (lowest to highest)." Alternatively, check out our budget-friendly round-trip fares from $105 for your next exciting vacation.**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.

Search for cheap Southwest Airlines flights from Sky Harbor Intl. Airport (PHX) to Harry Reid Intl. Airport (LAS) one to three months prior to 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 class and itinerary, 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.

Taking off from PHX at 7:05AM UTC-7, the earliest Southwest Airlines flight to LAS arrives at 7:15AM UTC-8. Flying early means you're less likely to experience delays.* Not an early riser? The last Southwest Airlines flight from PHX to LAS departs at 9:50PM UTC-7 and touches down at 10:05PM UTC-8.*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.