Same first segment flight, different inventory # when listed with different cxns?
 

I am curious...

I am looking at 6/6 PHX-SEA. Flight 5601 has S9, T7, L1 when connecting with UA 1260 L class all the way $195.

However, on the same screen, 5601 shows S1, T0, L0 when connecting with UA 724 - S on PHX-SFO and T on SFO-SEA $332. UA 724 is S9, T9, L0.

I had always thought the inventory numbers are the same for each flight regardless of which flight you are connecting to/from. I guess this is sort of combined with fares (PHX-SFO vs PHX-SEA) so they look like this? Doesn't it get really complicated to manage with tens of thousands of fares to all over the world that each flight can have?

Thanks.

UA shows the lowest of the numbers when mixing segments together. You can still book different inventory levels. One needs to know these nuances when using "expert mode" as both the UA site and the threads here warn about. This is especially important when looking for upgrades (R).

I believe it shows the lowest number of a particular bucket if there is more than 1 flight.

Meaning the first segment has 9s in all buckets, but you are connecting to a flight that only has S3 then it will only show S3 for each flight. If you used that same flight and connected to a flight with S5 then both flights would show S5 (even though the first one really has S9).

I was researching a simple return flight on both the US and UK site. The inventory on the outbound on the UK site was V6 but it was V0 on the US site - making it much more expensive.

It's not just the lowest number, it's also married segments logic.