Southwest is holding its semi-annual sale, with one-way domestic flights from Los Angeles International Airport starting as low as $42.
The sale began Tuesday morning and ends at 11:59 p.m. Thursday.
A one-way flight from LAX to Las Vegas is going for $42, while flights to San Francisco, Albuquerque and El Paso, among others, are selling for $49.
A flight from LAX or John Wayne Airport to Cabo San Lucas starts at $99.
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One-way flights from Long Beach, Burbank and Ontario to Oakland and Sacramento start below $50.
A three-week advance purchase is required. Seats and some dates for domestic flights are blocked, including Fridays and Sundays.
Domestic flights can be purchased from Oct. 31 through Dec. 9 and Jan. 3 through Feb. 14. International flights must be booked between Oct. 31 and Dec.13 and Jan. 10 through March 2.
To see the complete list of flights and for the terms and conditions, click here.