Originally Posted by
skywalkerLAX
Not intending to change anything but I booked on Orbitz and tried just for fun.
It does offer me change options but despite EF showing J/A class on the same flight available it tries to downgrade to Business (I) and displays a $2,039 fare difference plus $100 change fee.
On the second attempt it then popped up an error message.
As earlier, you need married segment availability (if it’s a transit in HKG), AND availability with a Vietnam Point of Sale. Don’t think that EF can check for VN PoS.