airplane book
n.—Gloss: a short, easy-to-read book. «The man who has written 16 titles, sold more than 1 million copies in Israel and set up his own publishing house (Keshet) doesn’t care to have his titles labeled “airplane books,” a term used to describe a novel so fluffy it can be read entirely on a single flight.» —“Oren ‘Tempts’ Israeli readers and defies critics” by Avner Hofstein JewishJournal.com (Los Angeles, California) Nov. 2, 2007. (source: Double-Tongued Dictionary)