U could book a one way with fb but u can't fly jfk lhr ams tlv.
But u could fly jfk par cdg tlv or jfk ams tlv or if available on delta direct
Why not?
Because it won't be a one way it would have to be 2 separate trips from jfk to lhr and from ams to tlv.
What about JFK-LHR-AMS-TLV as a one way ticket? possible?