Originally Posted by DoubleJ
OK, this may sound like a dumb question, especially as I've been flying and earning miles for many years now, but is it possible to fly RT on one carrier and split the FF miles earned (miles going and miles coming back) between that airline and another airline in the same alliance? Thanks.
I did it one on an idiotic mileage run a few years back.
One World was having some anniversary celebration, and several carriers were offering 100,000 mile bonuses if you flew on at least one paid flight with 5 or more partners.
I flew:
SFO - LHR on AA
LHR - MAD on BA
MAD - CPH on IB
CPH - ARN on AY
all credited to my Aadvantage
then
ARN - CPH on AY
CPH - MAD on IB
MAD - LHR on BA
LHR - LAX on AA
LAX - SFO on AA
on the return, all credited to BA except for the LHR - LAX (Aadvantage) since you don't get BA credit for Trans - Atlantic flights on AA
It worked out fine, although as GUWonder noted, BA tried to give the whole credit for the flight on their metal to AA... 200,000 bonus miles and a week in Sweden!