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Round-trip flights drop below $100 with Southwest's 72-hour sale

(Justin Sullivan/Getty Images)

JACKSONVILLE, Fla. – Bargain hunters, now's probably a good time to book a flight: 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.

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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 (Plus, the promotion does not apply to flights on Fridays and Sundays).

Now's also a good time to score a deal on international flights, with one-way tickets going as low as $59. But similar to domestic flights, the discounts only covers trips beginning Oct. 31 through Dec. 13 and those from Jan. 10 through March 2.

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

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