Belt Parkway, here they come.

Islip’s MacArthur Airport can’t be beat for its convenient location and stress-free terminal, but the $20 fares JetBlue is offering out of JFK International today are just too good for most Long Island flyers to ignore.

To celebrate its 20th birthday in business, the airline has launched a “20 Years Just Flew By” promotion with seats starting as low as $20 one way in select markets.

“No one believed that a start-up airline in 2000 could survive 20 months, much less 20 years,” JetBlue CEO Robin Hayes said. “But JetBlue proved that taking care of people and bringing low fares to the market could not only be a viable business model but could also completely disrupt an industry.”

To cash in on the great deals out of New York City, you need to move fast. Your trip needs to be booked before the clock strikes midnight TONIGHT, Feb. 12.

Travel needs to take place between Feb. 19-June 17. Blackout dates are March 18-31 and April 14-21 (You really didn’t think the deal would include the kids’ Easter break, did you?).

The $20 one-way deals out of JFK include flights to and from Syracuse (think Syracuse University’s Carrier Dome or Destiny USA, the state’s largest shopping center) and Worcester, Mass. (there, you’ll find the Hanover Theatre for the Performing Arts and Mechanics Hall).

Sexier destinations will be a little more taxing on your wallets. But not by much.

A one-way flight from JFK to West Palm Beach is $64, and a flight to Savannah, Georgia, is just $69.

Here are some other cheap flights out of JFK that are part of the birthday promotion.

• Tampa: $89
• San Diego: $129
• Nassau, Bahamas: $114
• Charleston, South Carolina: $54
• Aguadilla, PR: $99

Click here for a complete list of all the great deals JetBlue is offering out of the New York City area airports.

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