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.
That would be 2.8% cheaper than the same period in 2014 and 6.8% cheaper than 2013. Itâs not as drastic a decline as many fliers would probably hope for, but it will be the cheapest airline tickets have been in the past four years. As for why the ticket prices are sliding, there are several possibilities.