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JetBlue just announced its second major sale this month, with one-way flights for as little as $44. In order to take advantage of this flash fare deal, you have to book by May 18, 2016 (by 11:59 on Wednesday, to be specific).

If you're willing and able to travel on a Tuesday or Wednesday, you can enjoy very low fares for summer travel to destinations all across the United States, the Caribbean—even Latin America. Flights are available from June 1 to September 28, though a handful of blackout dates apply (think: Fourth of July weekend and Labor Day weekend, of course).

The cheapest flight on the menu is to or from Hartford, CT to Washington, D.C. But for only $50, you can fly from Martha's Vineyard to Boston and New York. Other great deals include:

A $69 flight from Boston to America's Favorite City, Buffalo, New York

A $79 flight from Baltimore to Orlando (hello, Disney World!)

A $79 flight from New York City to Bermuda

A $99 flight from Fort Lauderdale to Nassau, Bahamas (one of the hottest destinations for Labor Day trips)

A $99 flight from Newark, New Jersey to West Palm Beach, Florida

If these dates or destinations don't work for you, keep an eye out: we're pretty positive JetBlue will announce another airfare sale soon.

Melanie Lieberman is the Assistant Digital Editor at Travel + Leisure. Follow her on Twitter and Instagram at @melanietaryn.