Google's flight search has a "lowest fare for a n day trip" page that's pretty useful for flexible travel dates. You can't sort by wifi only though. https://ww

Google's flight search has a "lowest fare for a n day trip" page that's pretty useful for flexible travel dates. You can't sort by wifi only though. https://www.google.com/flights/#search;f=SFO;t=PDX;d=2012-12-21;r=2012-12-27;mc=p https://www.google.com/flights/#search;f=SFO;t=PDX;d=2012-12...