Originally Posted by
Gardyloo
And AA doesn't serve either WAW or ARN, thus (most likely) you'd be looking at BA as the issuing airline (just guessing, but most folks would be taking WAW/ARN-LHR as their first leg) thus ensuring BA fuel charges.
IIRC AA does all of RJ's xONEx online issuing for them.
A reminder you can use codeshares (where available) in order to get the online RTW booking tool to use a cheaper airline for ticketing.
Eg AA6377 WAW-LHR (operated by BA) connecting to an AA trans-atlantic flight, or AA6525 ARN-LHR connecting to an AA trans-atlantic flight.