Originally Posted by dcpatti

For everything other than price or award tickets, I use ExpertFlyer. Very nice tool for being able to expose routing rules (which is how you know what you can do to get more miles instead of the "most logical routing" that US website and various travel sites will show you) as well as checking seat availability, both by count and by seat map. It's a paid-for service but IMHO well worth it.

I use KVS for finding award travel-- this is also paid-for and it's a proper software rather than a wesbite. I can get a lot of the same information on award tickets from ExpertFlyer but seem to have an easier time with KVS output, especially if I'm searching a broad range of dates.

I do not know anything free that comes close to these tools in terms of accuracy and efficiency.

I'm still looking for the magical tool or site that will help me find good Envoy paid fares over a wide date range with flexible destinations though.