Equivalent fare class on code share flights
 

I have struggled with that same thing. I used to use this tool but I suspect it's out of date now. To be honest it wasn't always all that helpful in the past either.

.https://wandr.me/tools/staralliance_...e_mapping.aspx

If it's UA operated by AC, you can call AC and they can tell you what fare class it maps to for your specific flight/route. However, G is United's lowest fare class (before their Basic Economy) and has always mapped to a low fare class on AC.

In terms of alignment of booking classes across airlines, *A airlines have tried to align as much as possible over the years, but there has never been true alignment.

Apparently united fare class maps differently to AC class based on route and if tango available. Is there a chart showing the mapping or even what maps to TANGO and what maps to FLEX

When AC aligned their fare classes a few years back, most of them seemed to line up at that point, but with the subsequent changes and branded fares, they don't seem to line up as well as they did a few years ago.

I had a UA ticket last week with an AC segment, and the UA G fare had mapped into an AC K fare, so I'd expect your G fare may be the same. It showed as "Flex" when I'd looked it up with the AC PNR, but it credited as K for mileage and was considered as a K fare for eupgrade requests.

Same experience recently. 016 ticket, operated by AC. Showed as Flex G, and gave me advance seat selection. Later credited as Tango K, and AC's only explanation is that it's due to branded fares.

How do the branded fares work? When you purchase united 016 code share seats on AC there are different prices for different fare classes. I always assumed that a higher price economy fare bucket would confer more benefits, but that’s not the case if AC is mapping them to the lowest fare class.

AC fare codes
 

is you have a codeshare flight on AC, with AC confirmation number, is there any way to see the fare rules for that reservation online.

If your flight is UAXXXX G operated AC, it books into AC K (at least for TB).

If you are talking about the same ticket as your other thread, and it's a 016 ticket, the fare rules are as per what you bought with UA.

But after you buy ticket on united you can’t see the fare rules. I’m looking for the fare rules on AC so I can determine the class (first letter) and whether tango or flex (end). When you use your code share AC confirmation number, AC system just says FLEX or TANGO with no class, which would reflect the mapped fare class.

Just imagine what fare class you have.

Then realise it is worse than that.