ITA Matrix price error
Dear all, apologies if this is in the wrong forum, but I was hoping somebody could help me with ITA Matrix.
Specifically, I'm trying to find a fare from Tokyo-Beijing in March. I selected 'See calendar of lowest fares' departing March 1, 2016 for a stay of 4 nights.
This turns up a number of Air China non-stop HND-PEK flights, between March 15-21, that are priced at 30,310 Yen. For example, one I'm seeing right now is departing Mar 15 and returns Mar 19.
But when I then go to the Air China website to look for these specific airports and dates, the fare jumps by 10,000 yen to 40,310 Yen.
So I'm just wondering why this is happening. Is the ITA Matrix just throwing out phantom fares that cannot be booked? Or am I missing something?
Would appreciate any help. Thanks!