After the primer on what to do when flights cancel or delay because of weather and European passenger rights, am linking to some of the major airlines, and their policies, for dealing with the current stormy, wintry weather hitting many parts of Europe. The policies vary considerably by airline, so I have provided links to many of the major airlines serving Europe below.British Airways – If you are affected by the cancellations you can choose to rebook on an alternative flight or can claim a full refund through ba.com. We are experiencing extremely high call volumes in our call centres so where possible please use ba.com or contact your travel agent to rearrange your travel plans. Please do not go to the airport to make changes to your booking.

Lufthansa-Lufthansa has been forced to operate to a special timetable until Monday, December 20, 2010, in which numerous flights on German and European routes into and out of Frankfurt will have to be cancelled. This measure is necessary in order to reinstate flight operations on their customary stable basis. Lufthansa long-haul flights are not affected.There is a dedicated phone number for changes/cancellations.
Ryanair-Passengers who were booked to travel on one of the below cancelled flights can either apply online for a refund of their unused flight(s) OR transfer to the next available flight free of charge (a) online, (b) the airport ticket desk or (c) by calling our reservation centres…
Easyjet – can rebook or request a refund online for affected flights.
KLM / Air France – can apply for refund for canceled flights through December 19. Can also make changes to bookings with departure dates up to December 23.
United Airlines – travel waivers issued for London and Paris.
Delta Airlines – If your flight is canceled or significantly delayed, you are entitled to a refund. Even if your flight is not canceled, you may make a one-time change to your ticket without fee if you are scheduled to travel to, from, or through the following cities on Delta, Delta Connection, or Delta-coded flights during the specified time periods listed…Cities include Amsterdam, Frankfurt, London and Paris, and travel dates of December 17-20.
American Airlines – One time change without fee for affected flights – you’ll need to contact reservations regarding potential refunds.
Air Canada – Changes are permitted, refunds are permitted and if you are scheduled to travel to affected areas in the next few days changes / refunds without fees are also permitted. Air Canada does advise  Air Canada deeply regrets the inconvenience caused by the cancellation of our Heathrow flights by circumstances outside of our control. Unfortunately, we do not anticipate resuming normal services at Heathrow for at least 48 hours. Furthermore, due to the tremendous backlog caused by the closure of Heathrow over the past two days, our ability to provide seats to customers of already cancelled flights will be severely limited by already full flights during the Christmas holiday peak and the scarcity of available slots at Heathrow airport.The flexible policy mentioned above is for all affected European routes, not just London.

Qantas – may rebook without penalty but new travel date must be before December 27, or use ticket as a future travel credit.
Air New Zealand – for London,If you decide not to travel, you will be entitled to re-book on another Air New Zealand flight (conditions apply) or, if you have not yet commenced your travel, you will be entitled to claim a refund (even if your ticket is non-refundable). Our Contact Centre is able to assist with this. Free phone 0800 737 000 from within New Zealand or 0064 9 357 3000 from outside New Zealand.

My colleague, who covers Germany Travel, weighs in, and provides links for the major German airports. And over at Paris Travel  a brief look at how the snowy weather is affecting air travel in France.Regardless of the policies, even as snow is plowed off the runways, skies clear, and planes take-off – expect delays as airlines scramble to catch up after the major snowfalls and with the busy holiday season upon us – already full flights to boot.