How well do you know your low-cost carriers? Put your knowledge to the test with the cryptic picture quiz in our interactive low-cost carrier issue of Airline Business.
We've hidden the names of 18 low-cost carriers from over the last decade - some still flying today, other names long since gone - in 18 different pictures. All you have to do is work out what the airline is.
Or which current low-fares operator could be signified by this image of a pair of military aircraft below?
To make it easier, we have given you three options to choose from. And if you still need help, click to unveil a clue. Just pick your answer and see if you can get all 18 right.