Originally Posted by
katecb
I want to use my global upgrades for a flight for from IAH to Paris and from London, Heathrow to Houston. I have put in a request to redeem my upgrade and have been put on the waitlist. How are my chances at getting my upgrade cleared? Are there any other routes through Paris that I should consider so that I can get upgraded?
It is impossible to tell without more details concerning flights and dates of travel. In general, upgrades to Europe can be difficult, particularly during popular travel periods. The suggestion that "you usually should have a good chance at being upgraded" is not well founded. It depends on the flight, the fare class, the time of year, and the particular loads on that day.
If you want to get a better sense of how this all works, I'd suggest doing some reading here on the forum, as GPU usage is a very popular topic.