I had some unexpected long haul flights this year and I went about it without any FF strategy ever since I gave up my status on United.
I have 18k on Delta and 35k on Asia Air. In Dec, I'm flying JFK-LHR-ZRH roundtrip on British Air business class. (not sure what the accrual is)
What FF program should I go with? Marco Polo or AAdvantage?
Should I attempt to transfer my 18k Delta miles to whatever account I end up selecting?
Totally lost. Any advice appreciated.