A passenger jet slid off the runway at Prestwick Airport, Glasgow, on Wednesday. (Associated Press)

A deep freeze in the United Kingdom and Europe has led to about 90 deaths and is continuing to cause travel chaos.

In Scotland, a Ryanair flight from Dublin skidded off the runway Wednesday morning at Prestwick Airport outside Glasgow. The Boeing 737-800 slipped on to the grass while taxiing to the terminal after landing. No injuries were reported, and the airport later reopened.

Dozens of flights were reported to be delayed or cancelled across England and Scotland.

Two female passengers were killed in the Cornwall area late Tuesday when the bus they were aboard crashed on an icy road. Another 47 people were injured when the bus skidded off the road, hit a tree and came to rest on its side.

In London, the Eurostar train service asked passengers not to go to St. Pancras station until after 1 p.m. local time Wednesday as the service struggled to cope with a backlog of travellers caused by weekend disruptions. Snow in Europe caused a three-day suspension of service that left thousands of people stranded. Service was restarted on Tuesday after demands from French President Nicolas Sarkozy.

In Poland, about 79 people have died from the cold, with temperatures falling to –20 C in some areas.