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.
Airline tickets are expensive, and you can expect prices to keep rising. Thatâs why knowing when to book and buy could save you a bundle. Abby Hoppes said she wants to fly to Europe in June. The cheapest flight she could find was $1,300. Now is not the best time to book a business class from sydney to munich flight from Europe, according to researchers at the Airline Reporting Corp., which processes millions of ticket transactions every year.