If your last name is Green or Greene, start packing your travel bag.

As part of Frontier’s Green Week initiative, the budget carrier is offering free domestic flights of up to $400 in value for anyone with the surname Green or Greene.

Here’s how the promotion works:

  • Those claiming to be a Green or Greene must provide legal documentation
  • Passengers must book the one-way or round-trip flight on FlyFrontier.com
  • The flight must depart on August 13 and return by August 20

However, there is a catch for those privileged with the last name — eligible travelers will need to pay the ‘green’ upfront.

According to Frontier, they can expect a refund by September 15.

The promotion is designed to highlight the airline’s commitment to fuel efficiency and sustainability and to encourage others to live ‘greener’, the Denver based company said in a press release.

Click here to learn more about Green Flies Free.