Sounds like you've got a really good deal there, but I just wanted to post some info that I posted on another thread not long ago:
There's a convenient website called
www.bookingbuddy.com that allows you to put in your dates and itinerary once, then access expedia, travelocity and orbitz so you can compare their prices without having to re-type your info.
And you should know that our lowcost carriers Jet Blue and Southwest aren't listed on expedia, etc., so you have to check their websites separately.