$99 - Flights to Las Vegas from San Francisco

US Airways is offering flights to Las Vegas from San Francisco for under $100. Flights travel on Tuesdays, Wednesdays, and Saturdays.

Flights with other airlines are about $150, so if you want to fly on Friday or Sunday (as most people do), you will have to pay an additional $50.

Flight time between San Francisco and Las Vegas is about an hour and a half.