London Stansted airport is one of several UK airports closed due to safety concerns after the unusually heavy snow. Ryanair flies from Stockholm, Malmö and Gothenburg to Stansted.
Luton, Cardiff and Birmingham airports are also closed.
Ryanair is advising passengers to check the company’s website before setting out to catch a flight.
“All those affected will be rebooked or refunded,” the budget airline’s Northern Europe boss Wilhelm Hamilton told Expressen.
Other UK airports remain open, with Ryanair’s flights to Glasgow running normally.