Originally Posted by
canadiancow
I have successfully done it in the past. It might require a UA marketed flight for it to work. I don't know. Airline systems behave in such ridiculous ways.
Originally Posted by
D582
I’ve had this consistently work on UA (website and app) with any PNR created in Amadeus, regardless if flights are UA native numbers or codeshares. This is contingent on UA maintaining an index of host (Amadeus) locators and mapping to their own (SHARES) locator. It’s possible on some bookings they lose that mapping in their index.
Yes, I was also surprised it didn't work. I just tried it again on UA.com with the same result, i.e. only the separate UA PNR will pull up the itinerary. The same itinerary is being sold by both airlines, with the first leg operated by AC (YEG to YYC), and the next two operated by UA (YYC to ORD, ORD to STL). The second and third flights are codeshares but the first one seems to only have an AC number, I don't know if that has an effect. 🤷