Originally Posted by
layz
Many non-flex tickets that BA sell are what we used to call semi-flex until BA redefined the term.
In other words changeable for a fee + fare difference. Try changing it in MMB and it'll give an idea of the price (if it's working).
MMB first states "No changes permitted. No upgrades permitted" but also has a link to "Change date/time of my flight" (as well as to upgrade). If I click that I am told "The fare rules for your booking indicate that changes are not permitted."
If I do end up finishing early I'll probably just ring the GGL line and see what they say. Worst comes to worst I may be able to find a cheap-ish one way with one of the gulf carriers I suppose.