Hawaiian and Delta airlines announced a codesharing agreement today that for the first time will offer Delta’s customers access to connecting flights within the Hawaiian islands.

With a single ticket Delta passengers will be able to connect to 70 daily interisland flights operated by Hawaiian Airlines Beginning Sept. 15, the airlines said in a news release.

The codesharing agreement expands an earlier frequent flier agreement between the two carriers that allows their respective frequent flier members to earn and redeem miles for travel on either carrier.