Abta has urged the government to set out its roadmap to restart international travel as the UK’s 14-day quarantine on arrival policy comes into force.
Writing to home secretary Priti Patel, Abta chief Mark Tanzer reiterated quarantine would have a "serious impact" on demand for holidays and business travel.
He also stressed the wide-ranging knock-on impacts the measures would have on the UK economy beyond just the travel and tourism sector.
Abta says it is essential ministers bring forward a coordinated plan to restart international travel that allows businesses and consumers to plan ahead.
It wants the roadmap to detail how the government will "transition away" from the Foreign Office’s current advice against all non-essential travel worldwide.