Online Flight Planning
From Pilots Almanac
FlightCentral - Free; integrated weather, customizable, supports Google Earth
FltPlan - Free; very limited features
Landings Flight Route Calculator - Free; VFR
Skyvector - Free. VFR sectionals, IFR High and Low Enroute charts. Draws courses on charts and has airport weather overlays.
AeroPlanner - Free with Paid Premium Service
Airnav - Free. Airport / Navaid / Fix / Fuel Price information for the USA.
NavMonster - Free.
CSC DUATS - Free with registration (requires pilot certificate - student or higher). Complete flight planning and weather briefing. File flight plans online.
