Travelocity pulls up fares loaded in Sabre. Arkia and El Al both show up there. Just use flexible dates for the route of your choosing and then select the carrier of your choice, and it should work like it just did for me. Unfortunately, selecting LY or Arkia Israel is not an option in the pull down menu there to just get LY's fares and strike out the rest. But it still works for me to find the various lowest LY fares loaded into Sabre.