But the carrier, which connected Europe and North America via Reykjavik, with United Kingdom flights serving London Gatwick, London Stansted and Edinburgh, later annouced it had "ceased operations".
"With flights and holidays cancelled as a result of the Wow Air collapse, a lot of people's holidays will be ruined over the coming months", said Brian Brown, head of insight at Defaqto.
The airline notes that fares are "subject to availability".
Wow Air was founded in late 2011 with the goal of offering cheap flights and competing with Icelandair.
Stranded passengers are being advised to check available flights with other airlines.
Venezuela hit by second blackout this month
Fabiana Rosales, left, wife of Venezuelan opposition leader Juan Guaido, speaks to reporters before attending Mass at St. The outage began around midday Monday and appeared to have affected the majority of Venezuela's 23 states.
Visitors to Iceland are set to drop this year for the first time in a decade, according to the operator at Keflavik International Airport.
One wrote: 'Tempers were high last night at #yyz #wowair.
"Sometimes you get a new aircraft that comes along that allows others to introduce competition when previously there was none", he said.
If a credit card was used to pay for the flight, that company might have a level of protection too and issue some form of a refund, Wow Air said.
On the page where Wow touts its tagline - "We aim to WOW!" - that phrase is being hijacked by people who say they "got WOW'ed" - meaning abandoned.
Nick Laporte stranded due to Icelandic Airline bankruptcy.
UK Lawmakers Vote to Seize Control of Brexit for a Day
Previously, the Cabinet pledged to "engage constructively" with the process, but May said she would not be bound by the results. May has come under intense pressure to quit the prime minister's post as the price of winning support for the deal.
For trips to and from Europe fares are $60 and for trips to and from North America it's $100.
"The best chance consumers have for getting their money back hinges on whether they purchased travel insurance, or purchased their tickets with a credit card that offers travel insurance", says NerdWallet's personal finance expert Arielle O'Shea.
It's also a good idea to be as familiar as possible with your insurance plan before you travel.
The travel editor of the Independent, Simon Calder, said in these situations other airlines would step in as they did not seek to make money out of "a bad situation".
"We have a strategic vision for the airline, and look forward to working with its employees and agents to deliver that vision", said an Indigo's management partner when everything was right on track.
Louis-style sliced bagel prompts outrage on the internet
But now, Twitter has introduced us to the "St Louis" method of slicing bagels, which means cutting them vertically. Alek Krautmann on Monday tweeted a photo of his Panera purchase and called the vertical slices "the St.