The Art of Discount Travel (now revised and updated) is chockful of strategies and resources for lowering the cost of flights and accommodations. From significantly discounted to free – yes, free – multiple cost-reduction strategies are presented in detail.
This book was written with you, the consumer, in mind. If a cost-cutting strategy is legal, ethical, and available to the general public, you will probably find it in The Art of Discount Travel: Your Guide to Cheaper Flights & Cheaper Nights. While the author takes his sharing of travel hacks seriously, the book is sprinkled with instructional anecdotes and humor.