Waiver for Illness
No refund in case of illness/hospitalization
Passengers may refer to their travel insurance

Prior to commencement of travel:

When a passenger is unable to travel due to his/her illness or the illness of an
immediate family member (travelling or not) or a travelling companion, KLM will
waive advance reservation/ticketing requirements and service charges (if applicable) when passenger wishes to travel later.
Start of travel may be postponed maximum 30 days.
Any waiver will also apply to associates with whom the passenger is travelling.
Travel will not be permitted on an earlier flight than originally ticketed; nor will travel be permitted to commence at a fare that has expired.
When necessary, the appropriate difference in fare will be refunded or collected.

After commencement of travel:

Once travel has commenced, the minimum stay requirement (with regard to the fare) will be waived, or the maximum stay requirement will be extended until the date on which the passenger is once again able to travel.
Said extension shall only start at the point at which the journey was interrupted and shall be valid for carriage in the class of the fare paid.
The validity of the ticket shall be extended for not more than three months.

The same applies to travelling companions who were accompanying the passenger at the time such health problems prevented the passenger from travelling.

Documentation
In case of Illness
Illness must be certified in writing by a physician on his/her letterhead stationary verifying that the passenger could not travel on the date of travel because of illness.
This statement may not be written on a doctor's prescription pad.