I need to book a one way flight from LAX-DUS (Dusseldorf, Germany) the end of December. Using December 25 date, I searched Lufthansa and it seems that it is cheaper to book roundtrip $768 vs. one way $3,719. British Airways roundtrip $1,000 vs. one way $1,600.
Can also fly to and then take train from AMS, FRA (instead of DUS). Best flight is Air Berlin non-stop LAX-DUS, but Air Berlin only offers LAX-DUS from May through Oct.
Does is make sense to book roundtrip instead of one way and any pointers? This is for a German citizen.
thank you for your help!