I flew from North Carolina to London in 2007 for $466 round trip, so as I am now planning another trip to London from 8/16/13 to 9/1/13, I was stunned to see prices for the same flights at a whopping $1,455.70. I expected a price increase, but not almost tripple! Can anyone tell me the best time to shop for international airfare (how far in advance of travel, or a particular day of the week I should buy)? I keep getting alerts of fares below $1,000 for the same trip, but always with travel dates in less than a month. Should I wait, or book now? I flew non-stop from RDU before, but am willing to consider other options as long as they're on well-known airlines. My travel dates are fairly set in stone, however, because I already have show tickets bought and a flat rented.