Best Place to Find Cheap Airline Tickets

[fantasyfootball]

I haven't looked for airplane tickets in awhile. Does anybody have a site they highly recommend for finding discount plane tickets (priceline, cheapoair, travelocity, expedia, orbitz, travelzoo, bookingbuddy, etc.)?

Thanks.

[DesignatedT]

Where are you planning on going?

[fantasyfootball]

Where are you planning on going?

Las Vegas, New York, and possibly Colorado

[CosmicCowboy]

I've found some really great rates on hotwire for hotels and airlines.

[Libri]

Here's one that I've used before: cheaptickets.com.