For the big airlines this will always be one of the most cost effective online channels due to the fact they have so much historical authority built up from their existence as an airline carrying masses of passengers every year. The analysis is a top level view across the metrics we here at TMI value as the most important, however much of this requires a far more indepth analysis to really understand what’s driving these scores. As you’d expect these sites all carry high authority due to their sheer size and volume of customers they service. However there is a huge difference between the most successful and least successful in driving organic traffic to their sites. Get the full story at Travolution