Airlines

Airlines of the Web is a comprehensive directory of individual airline websites.

Airline Quality

Skytrax - ranks airlines on a 5 star scale and provides specs on seat size and pitch.

Seat Guru - detailed seating plans for aircraft flown by 16 different airlines.

Frequent Flyer Plans

Inside Flyer - a subscription site ($12/yr.) focussing on frequent flyer and reward programs.

Points.com - trade points between numerous rewards programs.