double-blind study - an experimental procedure in which neither the subjects of the experiment nor the persons administering the experiment know the critical aspects of the experiment; a double-blind procedure is used to guard against both experimenter bias and placebo effects.
No they get more expensive, airlines will always advise you to book in advance to take advantage of their best fares. Sometimes they do a special deal but not within a week of flying. I would try another airline or make different plans.
When To Buy The Cheapest Airline Tickets. For tips on scoring cheaper airline tickets during the holidays, check out the companion piece 6 Holiday Airfare Tips For Last-Minute Shoppers. If youâre shopping for cheap airline tickets for your next vacation, wait until the weekend to grab the best deal. Though Tuesday has traditionally been favored as the day to buy your airline tickets (itâs when sales tend to hit) a recent study shows that the new day for the deepest discounts is Sunday. The Sunday advantage applied to both domestic and international ticket purchases, according to the Airline Reporting Corporation, which analyzed air ticket transactions between January 2013 and July 2014.