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.
The Expedia report once again reveals very little variation in price among the weekdays, with Tuesday being cheapest at $561 and Friday the most expensive at $571. But when the timeline is shorter, Tuesday is no longer the cheapest day of the week to buy. That honor goes to Sunday, with an average price of just $549. Ultimately, Expedia concluded that there is no silver bullet to finding the cheapest tickets. Itâs worth noting that because airfares change minute by minute and day by day, anointing one particular day of the week is not necessarily the best predictor of a 'good-deal' fare, the travel site wrote.