Deal Sites

Orbitz

Airfarewatchdog

Hipmunk

ITA Software

a little complicated to use, but worth the effort at times.

Momondo

Hotwire

Skyscanner

great for finding deals.

Jetradar

Kayak

Priceline

Skiplagged

helps you find throwaway tickets.

Trippy

Travelstash

Travelocity

Adioso

sweet deal site we like to use

Google Flights

probably the best place to find deals.

Lowcostairlineguide

good for finding the budget airlines that fly to/from any airport

Theflightdeal

great site to find deals – be sure to sign up for their newsletter