Casper-Natrona County International Airport and Allegiant Air say they’ll send two people from the Casper area on an impromptu vacation later this week.

Casper-Natrona County International Airport will celebrate Allegiant Air’s new service from Casper to Phoenix-Mesa Gateway Airport by giving away a pair of round-trip tickets aboard the route’s inaugural flight Thursday.

Airport manager Glenn Januska says there's a catch, however.

"They have to be ready to go - the lucky winner will be going out on that inaugural flight," Januska said. "Anybody that wants to kind of get away before the holidays can come out a register between 8:00 a.m. and 9:00 a.m. and be ready to leave."

To participate, Januska says entrants must:

-         Be 21 or over.

-         Be registered before 9:00 a.m. Thursday in the terminal lobby.

-         Be ready to leave immediately if selected as the winner.

Januska says the winner will also receive a free three-night stay at the Hyatt Place hotel in Mesa, Ariz.