SYDNEY — Andrew and Debbie Jackman of Britain spent more than two years saving up for their family vacation to Australia. They probably wish they'd saved a little longer.

On Friday, they found out their Qantas flight from Sydney to Britain had been canceled thanks to a volcano erupting in Iceland. So the Cambridge couple and their two teenage sons squeezed into a $138 hotel room to wait out the night. On Saturday, the hotel raised the price of the same room — simply because it could, Andrew said ruefully. After endless negotiations, the hotel brought the price back down a bit, but the family, broke and frustrated, opted to move Sunday to a hostel.

"We're at the end of the holiday so we've spent all our money," a weary-eyed Andrew said, as he sat with his family next to the Qantas customer service counter at Sydney Airport. "Because that's what you do on holiday."

A dangerous cloud of ash from the volcano has grounded flights in and out of Europe for four days, leaving thousands of people stranded — and increasingly strapped for cash. Stuck passengers have had to shell out for hotels, restaurant meals, clothing and transport to and from the airport as they seek information on when their travel nightmare might end.

Airlines in Europe are expected to fly between 8,000 and 9,000 of the 28,000 scheduled flights today due to a flying ban in major parts of Europe, the Eurocontrol air traffic control agency said.

In Japan, Francois Broche was down to his last $30.

The 33-year-old literature and philosophy professor from Nimes, France, said he would have to call his bank at home to see if he can get his money transferred — but doesn't know how.

"I stayed in my hotel last night, but that was all my money," he said at the Narita International Airport, near Tokyo.

"I think I'm going to stay here and sleep at the airport. Help me God."

Nicolas Ribard, 29, from Avignon, France, was among about a dozen stranded tourists squatting on sleeping bags that Narita airport officials had lent them.

He and three other friends had very little cash between them, and were surviving on airport-issued crackers, bottled water and coupons for one free shower a day.

Their earliest possible flight would be Taiwan's EVA Airways on May 12 — but only if they are willing to pay an extra $200. Otherwise, they have to wait until June, Ribard said.

Airport officials came by Monday and offered a tour of the airport to kill time.

"This is not what we need," Ribard said. "We want a bowl of rice."

Many stranded travelers are also fretting over lost paychecks. Tom Napier — an American stuck in Oslo, where he had been visiting a friend — said his prolonged absence from his job as a high school history teacher in Bernards, N.J., will "more than likely" affect his salary.

"I am a little afraid that my pay will be docked," said Napier, 35.

"I also have tutoring jobs during the week that usually supplement my salary. That will be gone. And even if I don't get my pay docked, all my days off will have to be charged as sick days."

Andrew Cutter, 40, of London, who got stuck in Sweden while visiting his brother, said he will miss out on income from his job as a contractor in the events industry.

Cutter had planned to go back to London with Ryanair on Sunday, but has now rescheduled his flight for Thursday, hoping airspace will be open by then.

The four days will cost him about $1,000 in lost wages.

"Really, if I'm not back by next Monday, I think it's going to be an issue," he said. "I had to buy some extra clothes today because I didn't have enough."

Steeper-than-usual hotel prices is another passenger complaint.

In Hong Kong, Busi Daniel, a 39-year-old French tourist, said he spent Sunday night in a hotel after his flight was canceled.

But a huge jump in price meant he would be forced to sleep at the airport today.

"Yesterday, we had a hotel room at 250 euros.

At midday, it was 460 euros, and in the evening, the price was 800 euros for a room — we can't pay that," he said as he waited at KLM Royal Dutch Airlines' counter in Hong Kong's airport.

The Jackmans spent hours pleading for mercy from the Novotel Sydney Brighton Beach after it raised the price of their room the second night.

Asked if the hotel was guilty of price-gouging, the hotel's general manager, Alan Burrows, said simply, "We dynamically price much like the airlines do, according to how many rooms we have to sell in the hotel."