Is your last name Green or Greene? If so, Frontier Airlines is giving you the chance to book a free flight this month.

Well, there's the slight catch I was talking about.

Frontier, which bills itself as "America's Greenest Airline," is inviting everyone who literally lives a green life to claim a free flight later this month as part of Frontier's "Green Week' celebration.

WGN News:

To claim their free flight, eligible individuals must book flights on and confirm their last name is Green or Greene.

Those eligible for the promotion will then receive a full refund of up to $400 for round trip flights if both segments of travel are purchased on one passenger name record.

The first flight must depart between 12:00 a.m. and 11:59 p.m. on August 13, 2019 and the return flight must arrive by 11:59 p.m. on August 20, 2019.

Refunds will be awarded to the original booking contact person on September 15, 2019.

The promotion is only applicable for those with the last name of Green or Greene. Their immediate families, including spouses, parents, children and siblings are not eligible for the promotion if their last name is not Green or Greene.

No word on whether this is available to people like Mr. Green Jeans, The Jolly Green Giant (or his friend Little Green Sprout), The Green Hornet, The Green Lantern, The Green Goblin, or that guy from the song Greensleeves.

However, word has it that Cee Lo Green and Mean Joe Greene are very excited about the possibilities.

As to the in-flight entertainment offered on the "Green Flights," they've got this guy:

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