So if you go to planespot at LAS, check your winds. they could save you a trip down there. ¶ PHL is also another good place to go. You may have to go a fair bit to get to it, but you can actually park right next or near the Tower to planespot.
Source: wiktionary
At the U.S. airports where I planespot you see this phenomenon manifested clearly. The planespotting idiots will ignore an Air China 747-400 as it glides in beautifully for landing, […] but let a dirty-looking stealth-schemed United 777 come in and they all get so excited they can barely keep from trembling and can't hold their cameras steady.
Source: wiktionary
You missed the best place of all to planespot. EAA week at OSH (in late July/early August).
Source: wiktionary