Originally Posted by
MSPeconomist
You can only SDC on "international" itineraries after all of the international segments have been flown. If a DM can SDC, the co-terminal uplublished rule should apply but on a EU-USA-EU RT, you're SOL unless IROPs happen.
That is also how I understood it. Since any change prior to a USA-EU return segment is subject to re-pricing by the rate desk.
This trip is pretty fixed (so it's no big deal); but I learned the hard way that if I'm flying into the USA and returning from a different city, better to book the international separate from the domestic (that is between the international segments).