Originally Posted by
M60_to_LGA
The OP will get two separate ticket numbers, and two separate reference locators, for the purchase.
One will be for the AA segment(s) and will be issued by AA.
The other will be for the UA segment(s) and will be issued by UA.
This isn't a codeshare situation; it's just Expedia mixing a one-way AA ticket outbound with a one-way UA ticket inbound.
Not necessarily. I've purchased similar tickets on Expedia and gotten only one ticket issued on the stock of the first marketing carrier.