Something about searching on United: http://travel.stackexchange.com/questions/16581/does-browsing-ticket-sites-in-incognito-mode-and-or-from-different-ips-resu

Something about searching on United: http://travel.stackexchange.com/questions/16581/does-browsing-ticket-sites-in-incognito-mode-and-or-from-different-ips-result-i http://travel.stackexchange.com/questions/16581/does-browsin... I've experienced it myself searching on United.com. But yes, sticking with a single airline's usually a good idea — there are benefits towards acquiring elite status on a single airline's frequent flyer program (even when we're talking about airline alliances).