The "majority" of Goldtrail customers who were abroad when the firm collapsed should be back in the UK within hours, the Civil Aviation Authority has said.
Some 16,000 people were abroad when the Greece and Turkey holiday specialist went into administration on Friday.
The CAA said some Turkish hoteliers have been demanding cash payment for rooms which have already paid for as part of Goldtrail packages.
Goldtrail customers can call the CAA on 0203 4410846 for information.
The CAA has advised holidaymakers faced with demands for money at a hotel, despite having paid for a package holiday with the collapsed company, to call the helpline because the Atol scheme protects them against having to pay again.
A spokesman for the air regulator said: "Unfortunately they don't have schemes like this in Turkey so the hoteliers may not know about this.
Goldtrail tour operator
"If this happens, ring us. We will contact the hotel and explain the situation and they shouldn't have to pay."
There have been reports of some hoteliers aggressively pursuing holidaymakers for payment.
Kenneth Ogilvy, from Ayrshire, told the BBC he was forced to hand over £280 by a hotel owner who refused to return his passport until he settled the bill.
The CAA added that "everybody is coming home on the flights they were supposed to".
"We think by the close of play [today] the vast majority of people will be home," it said.
About 16,000 customers of the holiday firm, which was based in New Malden, Surrey, were overseas when the firm went into administration on Friday afternoon, while a further 2,000 were scheduled to fly from the UK over the weekend.
And, in total, an estimated 50,000 people booked to travel with the holiday firm could be affected over the summer months.
The CAA said all flights back to the UK from Turkey and Greece would operate as scheduled up to and including Monday. Information on flights from Tuesday will appear on its website later.
Those due to fly with the failed operator are being advised not to go to the airport and contact their travel agent instead.
The CAA said holidaymakers could claim back money lost on bookings, and also any out-of-pocket expenses, but it would probably take several months for those claims to be processed.
Click here to view original article from the BBC, Monday 19th July, 2010
