Mokulele Airlines has introduced a special island hopper standby fare that allows passengers to fly for $30 per segment.

The state’s third-largest airline said Thursday it will post daily Facebook and Twitter posts announcing which flights have open seats. To take advantage of the $30 per segment fare, fliers need to arrive at the check-in counter 30 minutes before the scheduled departure. The standby rate offer is valid through the end of this month.

“It’s a first come, first-served concept,” Mokulele President and CEO Ron Hansen said.  “We have over 100 flights a day so there are a lot of opportunities for people to stand by and save.”

Mokulele Airlines has an 11-plane fleet of nine-seat Cessna Grand Caravan turboprops and operates daily flights from nine airports, including Honolulu and Kalaeloa on Oahu; Kapalua, Kahului and Hana on Maui; Kona and Waimea on Hawaii island; and Hoolehua and Kalaupapa on Molokai.