I only know of the major websites. But Travelocity and Priceline deals are not anything special. I'm looking for really fantastic airfares. Where could I find them?

I have not tried them yet, but trip.com advertizes discounted airfares.

Also try discountflights.com.

I don't see your location on your post. Knowing this might provide more informative answere (especially if you are not in the USA). A site with discounted airfare information worldwide is here.

I haven't looked into this website but have heard that cheaptickets.com is another good one.

You can try Hotwire.

Thank you so much everyone! I will sure look into these.

Another one you could check out is www.wefly.co.uk
This one's great if you're flying from the UK (especially to European destinations)

Just so you know, in my experience travel agents get you better deals. More than once I searched all the online airfares, then called a couple travel agents, and found that the agents got prices hundreds of dollars less. For instance, next month my son and I are flying back to NY from Alaska. Expedia said almost $600 per ticket, cheaptickets.com said about $550, the local travel agent said $460.

I've had the same experience as the displaced New Yorker. I always try to hunt down a filipino travel agent. They're great bargain hunters! At a time when my friends were flying across the US on vacation for $800-1000, my agent got me to Asia and back for $625!

I've never found a better price at any of these sites, though I've only looked a few times.