Originally Posted by
KLouis
Careful: you may book the higher fare class, but then you find out that there is no upgrade inventory available...
Booking class 'I' is available for my flight. However I realized you can't add a Flex to just one segment, it has to be for both flights if you do a roundtrip and that significantly bumps the cost up.
If I don't do a roundtrip then two one ways also cost more.
So phoning in is
probably better.
Based on Expertflyer, to go from booking class TNOBAGD to SNOBAGD it's just 20 USD more for my flight, and booking class S earns 100% miles