Originally Posted by
Jaenks
No, any economy class paid ticket is fine.
Yes, as per redemption chart but be aware that the agents/robot can count it separately, 15k+45k, so if you dont want to send the feedback and wait, just accept IST-IAH segment upgrade for 45k miles.
Search I class availability at their website or through Expertflyer(accuracy not guaranteed). Purchase tickets through Chase travel to be on the safe side.
You can upgrade all three tickets using your miles from your account.
i am on the same way but I want to upgrade with Star Alliance miles from my Aegean account. Turkish told me to contact Aegean for eligibility of ticket upgrade. I guess my case is more complex.
I am still hesitating as I don't want to pay cancelation fees nor end up on economy on a 11 hour flight