Underlying Ebit (earnings before interest and taxation) was reported at €100.9 million for the quarter, versus €186.8 million in the same period last year.
However, group turnover for period was up by 3.7% on last year to €4.75 billion.
Tui said “efficiency enhancement and cost reduction” in its tour operators would be “accelerated”.
Chief executive Fritz Joussen said: “Despite the challenging environment in 2019 to date, our underlying business remains robust, and we expect to deliver a solid performance in 2019, which, however, will not match the prior year’s result as expected due to the grounding of the 737 Max.
