Why that ticket to Israel is still so expensive

I was snooping around a US airline website this weekend and discovered that I could fly from Boston to London next weekend roundtrip for $400. But a direct flight from Israel to the US and back costs around $1200. And it's not even high season yet. Why can't you get a cheaper fare?The Thursday before Pesach (Passover), I had a call from a cousin of Mrs. Carl in Jerusalem who had just arrived in