I've been trying unsuccessfully to book a round trip flight from London Heathrow, UK (LHR) to Ben Gurion, Israel (TLV) leaving on Dec 24 and returning on Jan 3. I'm seeing this on ITA Matrix but cannot find it on any booking site for less than $832.

Does anyone have any ideas how I can book these flights at this rate? 

[![ITA](https://i.stack.imgur.com/aOhUD.png)](https://i.stack.imgur.com/aOhUD.png)