I pulled up a similar itinerary on DL.dumb for this month, and it doesn't include an IOS. However, it is pricing the award at 220K in J (120K Asia-EU + 100K EU-US). ffI, how many miles was the routing via CDG to be charged at and was there an IOS? (If there was, I'll bet that it's the exact same amount AF's YQ was for those flights at the time of booking.)

Presumably the CZ itinerary did not include an IOS but did include YQ. Able to share what the YQ was? Trying to compare with the MH YQ I just paid.

It would be really great if we could start building a list of region pairs (probably with partners used) that do/do not incur the IOS. Seems worthy of its own thread to help answer some frequent questions. (For instance, EU-Australia on KE and MH involved no IOS, but it did require paying YQ for the MH portion.)