A cheap trip is not a trip with a low headline price. It is a trip where the total cost, the time cost and the comfort cost all stay acceptable. These guides add up the fees, transfers, luggage and room quality that budget comparisons usually leave out.

A $39 fare is a starting price, not a trip cost. Add the bag, the seat, the transfer and the 4 a.m. arrival, and the comparison often changes.

A cheap room is only a bargain if you sleep. These are the checks that separate a simple budget hotel from a night you will regret.