Landmark for Southwest Airlines last week as it not only secured a quarter of web traffic to airline sites in the US but now has twice as much as Delta.
The carrier added a further 2.25% market share to its previous position, taking it over the 25% barrier, but the push - and a slight decrease from Delta - scored it a massive 13% lead over second position.
Most popular travel websites in the US for the week ending February 11 2012:
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Destinations and Accommodation
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Travel search terms
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NB: Data couresy of Experian Hitwise