example
Code:
https://www.google.com/flights/#search;f=EWR;t=LHR;d=2016-04-07;r=2016-04-11
you should be able to decipher what this URL does (when you load into your browser)
if you can't, then you aren't a power user on flyertalk
(syntax here is slightly different, no questionmark or ampersands... but the idea of key-value pairs remains the same