Join Date: Feb 1999
Location: San Jose, California, USA
Programs: AS 100K, UA MM, AA MM, IC Plat Amb, Marriott Gold, Hilton Gold, Hyatt Explorist
Posts: 3,146
I think it's a crap shoot trying to price out some ITA itineraries online. Even when I have precisely recreated an ITA itinerary in another booking engine, it's not unusual for the price to differ -- sometimes by only a few cents, and sometimes by thousands of dollars. This isn't always ITA's fault, because ITA is more flexible than some booking engines can be. For this reason, I use ITA merely as a starting point.
If I can't recreate an itinerary that ITA finds, sometimes I'll try with hipmunk, because hipmunk takes me directly to a booking engine where I can more easily confirm the quoted price.