It appears that Travel Sites don’t do that well in Facebook according to EyeForTravel’s article Are Facebook and Travel a Good Match? Travel appears to be under indexing in Facebook interaction relative to other categories.
Travel sites received .3% of referrals from Facebook (in other words, Facebook sent 3.4B visits to website and only 8.3M to travel sites).
Likewise, Travel sites are sending a decreasing amount of their visitors to Facebook:
While the research shows a positive correlation between visits to Facebook brand pages and conversion, they also show a minimal overlap between brand’s Facebook pages and the same brand’s website: <10%