The main indicator that the airlines are looking for is high temperature. Aa a nurse we are inundated with information regarding swine flu. Basically if you have a high temperature, aching joints, sore throat, cough, runny nose, then you have the symptoms of swine flu. I'm told that if you have it then the last thing you want to do is travel. If people do think that they have it, they should get a letter from their G.P stating that they have it and are not to try to travel, that is how you will get a refund. If you try to travel and get turned away, you have lost your money. First of all I booked with XL, now I'm a Nurse working in the city with the highest diagnosed cases of swine flu. I wonder if I'm destined to get my holiday this year.