TUI travel (LON:TUI) unveiled on Thursday a third quarter profit hit from the terrorist atrocity in Tunisia and Greek economic turmoil.
TUI said the Tunisia beach attack, in which 38 people were killed - most of whom were on TUI holidays - cost it €10mln in cancellations.
The tragedy fuelled a €40mln fall in underlying pre-tax earnings in the quarter, exacerbated by Greek economic uncertainty in the early summer.
Tough competition in the German market and higher costs in Belgium also weighed, although the group said UK trading was strong.
Group underlying pre-tax earnings before interest and amortisation for the quarter increased to €194mln from €164mln a year ago, or to €185mln excluding the earlier timing of Easter and the positive impact of foreign exchange translation.
Nevertheless, TUI hailed strong underlying profit growth and said summer 2015 trading had been robust overall.
It forecast underlying profit growth of between 12.5% and 15% this year and at least 10% in the next three years.
TUI said it had redistributed capacity released by lower demand for Tunisian holidays to other areas.
Economic uncertainty in Greece adversely impacted trading there at the end of June and in the first half of July.
But the group said bookings had improved in more recent weeks and cumulative bookings remained ahead of the year before.
TUI joint chief executives Friedrich Joussen and Peter Long said supporting customers, their families and staff remained the group's highest priority.
They added: "In spite of the events in Tunisia and Greece, we have continued to deliver strong growth."