I want to purchase a nonstop flight on a multi city itinerary from PHL to SFO and return SFO to NYC. I understand that taxes and fees will only be shown if I under bid and I receive a possible counter offer from priceline. However, it seems to me there are too many variables to discern the route type by the amount of taxes and fees such as multiple airlines, different airlines and different airports in NYC. Does anyone have suggestions for fool-proof or "good guess" techniques on discerning whether a nonstop flight is probable by the amount of taxes and fees estimated by priceline's counter offer?
