Contact the Lost Property Office of the airport that you arrived at.
That's quicker ( in the long run) than going to the airline.
Standing rules are that all lost property is taken from the aircraft. It goes to the Lost Property office and is logged.
When you call have all your flight info, time of arrival. Hopefully there will be good news. Did you have travel insurance? Though I guess the value of the goods may be negated by the excess?  | 
