Makani Kai Air, which has only about 0.5 percent of the state’s interisland market, is expanding service to Molokai beginning June 1 by adding flights out of two airports on Maui.

The Honolulu-based carrier said Tuesday it will offer six daily round-trip flights between Kahului and Ho’olehua and also will fly twice a week between Kapalua on Maui and Kalaupapa on Molokai. The company is offering an introductory $39 one-way fare between Maui and Molokai for tickets booked before July 1 that will be used for travel before Sept. 1. The introductory fare flights must be booked online at MakaniKaiAir.com. The regular price will be $50 each way.

Makani Kai Air, which flies nine-seat Cessna Grand Caravan single-engine turboprops, began offering flights between Oahu and Molokai in June 2013 and offers $50 flights each way. The airline offers eight daily round trips to Ho’olehua and flies twice daily to Kalaupapa.