Old Nov 8, 19, 12:41 pm
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Originally Posted by mnbp View Post
My guess is that upgrade offers taken before the OLCI window opens (T>24) result in reticketing to the new class of service, but offers taken within the OLCI window (T<24) do not. Is that the distinction?
This is my understanding, although I've never tested it to discover the exact timeline.

We should also point out that paying money (or miles at the rate offered) to upgrade only some of the connecting segments in the same direction normally is treated like a seat purchase and doesn't change the ticket to a higher fare class.
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