OP Orbitz has a bunch of 1 ways for apx $425 they put together 2 different carriers to get it, 9/23
there might be a charter or LCC flying HEL-TLV but I wouldnt want to roll the dice if you want to make sure your there before YK.
Keep in mind that TLV will close to ALL Incoming and Outgoing flights @ Noon on Tues 9/25