The tour operator says it has significantly boosted capacity in Turkey, Greece and Croatia, as well as Cape Verde which will benefit from 200,000 seats.
More than 500,000 additional seats have been added across six regional airports, while five new UK-based aircraft will be introduced.
Launched on Monday (March 26), Tui said its summer 2019 programme expands on the “soaring popularity” of Croatia, the “enduring appeal” and “consistent value” of Greece and the “resurgence” of Turkey. Nearly 50% of its new routes will fly to these destinations.