If your baggage is delayed, the airline has up to 21 days to find it and return it to you. In the meantime, they should cover any emergency expenses that you may incur as a result of not having your belongings. If the airline can't find your baggage within 21 days, it’s considered to be lost. In that case, you will have to make a claim for compensation and the airline will usually ask you for a list of the missing items. If possible, we recommend that you attach as many original receipts as possible. Claims may be filed in person at the airline's desk at the airport or via mail. Please visit the specific airline's website to find their contact information regarding lost baggage.