[Expired]when you book a flight + hotel Las Vegas package for 4 nights or more
- Southwest Airlines Vacations offers 2 nights free when you book a flight + hotel Las Vegas package for 4 nights or more.
- Book by 5/2/13 by 6:00 p.m. CT, Travel from 4/20/13 - 9/30/13.
- Blackout dates apply.