Thousands of Britons stranded abroad by the volcanic ash cloud travel chaos should be home by the end of the week, the Association of British Travel Agents (Abta) has said.
Airlines brought back around 100,000 tourists over the weekend after skies above Britain reopened last week.
But Abta said around 35,000 Britons had yet to board flights from airports around the world by Sunday.
"The majority of people are expected to be back by the end of the week," said an Abta spokeswoman.
"The size and scale of the suspension meant that everybody couldn't be brought back immediately."
Thai Airways International said the last of its 380 passengers caught up in the disruption were due to arrive at London's Heathrow airport on Tuesday morning after being stuck at Bangkok's Suvarnabhumi Airport.
The six days of restrictions were caused by ash from Iceland's Eyjafjallajokull volcano.
More than 100,000 flights were cancelled with airlines set lose more than two billion US dollars (£1.3 billion).
Virgin Atlantic boss Sir Richard Branson condemned the restrictions as an "over-reaction", while British Airways chief executive Willie Walsh said the ban had been unnecessary. Peter Long, chief executive of Tui Travel which includes holiday companies Thomson and First Choice, described the Government's response to the crisis as "a shambles".
But Prime Minister Gordon Brown defended the time taken to reopen UK airspace, stressing that passengers had to be "safe and secure".
