The operator will introduce exclusive Tui Airways flights from Gatwick and Manchester to Rijeka on Croatia’s Adriatic coast next May.
Kvarner Bay is the latest addition to Tui’s Croatia offering.
According to the operator, it has experienced a 38% increase in sales for next year on 2017 bookings.
It will also launch a new adults only Tui Sensimar resort on Rab, complete with two premium “platinum” hotels.
The Croatian tourist board, meanwhile, says it has seen an almost 8% increase in UK travellers to Croatia this year.
Tui says unique searches on its systems for Croatia have gone up almost 30% compared with 2017.