Israir attempted it years ago by wet-leasing an a/c (first a Boeing 763) for the route and it went bust. I am actually surprised that Arkia never tried doing the same thing. Given how high fares between the USA and Israel are compared to similar flight sectors, I think the economics would work for Arkia if they wet-leased an A330 or another medium sized fuel efficient a/c and deployed it on the route for the summer months, particularly if they were able to charge marginally higher than TK or any of LY's competitors.