Southwest Airlines launched its 72-hour flash sale Tuesday.
For a limited time, the airline is marking down prices to less than $100 for round-trip tickets to a number of destinations, while one-way fares are dropping as low as $49.
It's worth noting that you can't take advantage of the discounts right away. The sale only covers flights from Oct. 31 through Dec. 19 and those from Jan. 3 through Feb. 14. The promotion does not apply to flights on Fridays and Sundays.
Here's a list of prices for flights out of Jacksonville:
Atlanta, starting at $49 one-way
Baltimore, starting at $99 one-way
Chicago (Midway), starting at $99 one-way
Denver, starting at $129 one-way
Houston, starting at $99 one-way
Nashville, starting at $79-one way