Wanna get away? Southwest has fares for under $100, but act fast

You can fly to Atlanta from all three D.C. area airports with one-way fares starting at $79. (Thinkstock)

You can fly to Chicago's Midway Airport from Reagan National with one-way fares start at $79. (Thinkstock) — You can fly to Chicago’s Midway Airport from Reagan National with one-way fares start at $79. (Thinkstock)

You can fly to Columbus, Ohio, with fares starting at just $49 one-way from BWI Marshall and Reagan National. (Thinkstock)

A one-way ticket to Fort Lauderdale, Florida, starts at just $79 from all three D.C. area airports. (Thinkstock)

Fares start at $79 one-way to Orlando, Florida, from Dulles and Reagan National. (Thinkstock)

Fares start at $79 for a one-way ticket to Houston, Texas, from BWI-Marshall and Reagan National. (Thinkstock)

You can fly out of BWI-Marshall or Reagan National to Milwaukee, Wisconsin, with fares starting at $99 for a one-way ticket. (Thinkstock)

Fares to Nashville, Tennessee, from Reagan National and BWI-Marshall start at $99 for a one-way ticket. (Thinkstock)

One-way tickets to Providence, Rhode Island, start at just $49 out of BWI-Marshall and Reagan National. (Thinkstock)

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Wanna get away? Southwest Airlines' twice-a-year fare sale is back with one-way flights for as low as $49 out of all three D.C.-area airports. But you better act fast, the sale ends June 7. File. (AP Photo/Stephan Savoia)(ASSOCIATED PRESS/Stephan Savoia)

WASHINGTON — If you’re planning for a summer vacation, then Southwest Airlines has a deal for you: round-trip flights under $100, but you better act fast because it all ends June 7.

It is part of Southwest’s twice-a-year fare sale. Flights start at $49 one-way from all three D.C.-area airports.

Of course, as with most deals this good, some restrictions apply.

The sale only covers flights from Aug. 21 through Dec. 12, or from Sept. 5 through Dec. 6 if you want to go to San Juan, Puerto Rico.

The sale does not include domestic flights on Fridays and Sundays. Dates around Labor Day and Thanksgiving are also blacked out if you’re looking to fly in the U.S. The fares are only valid on nonstop flights.

You can find more information on Southwest’s website.

The sale runs through 11:59 p.m. in the time zone of the city you’re flying out of on June 7.

On Southwest’s website you can find a list of destinations that you can head to from Reagan National Airport, Dulles International Airport and BWI-Marshall Airport.