Google has been taking a lot of heat for placing Google Flight Search results above all organic results, but although Bing has largely flown under the radar, it takes preferencing even a step further than Google does.
If you merely enter “JFK to LA” into the Bing search box, then Bing’s auto-suggest feature produces its own Bing Travel result as the first suggested query, like this:
And, if you select that first link, as many users would, it takes you directly to Bing Travel — and thus it bypasses all other sponsored and organic results on the traditional Bing search results page.
Read full story at: http://www.tnooz.com/2012/01/03/news/google-flight-search-bias-what-about-bing/