The group on Wednesday (14 May) reported a pre-tax loss of €207 million (£174 million) after taking into account the late Easter, which did not fall during this period.
Tui said this shaved €32 million (£27 million) off its second quarter result. This compares with a loss of €189 million (£159 million) during the same period last year.
The late Easter meant 2.6 million guests travelled with Tui in the second quarter, 200,000 fewer than in the previous year.
In Tui’s Northern Region, which comprises the UK, Ireland and Nordic countries, underlying losses amounted to €182 million (£153 million), compared with a loss in the previous year of €165 million (£139 million).