As an example, I found seats departing Phoenix PHX on Saturday, April 13, returning from Las Vegas LAS on Tuesday, April 16.
Other dates are also available for travel on Tuesdays, Wednesdays, and Saturdays, through mid-November, with a 14-day advance purchase required.
This Basic Economy fare includes one carry-on bag plus one personal item. A checked bag costs $30 each way.
Seats will be assigned at random upon check-in for this price.
For an additional $60 roundtrip, you can purchase a Main Cabin Economy fare, which includes standard advanced seat selection and allows ticket changes/upgrades for a fee. Southwest also has a $90 roundtrip fare, which includes two free checked bags.
See our fare details for booking info.
For more deals to Vegas, check out our Las Vegas (LAS) listings.
Need a room in Las Vegas? Here's what's available for the above dates on Hotelwatchdog.