I'm really confused, but I'm sure you knowledgeable people can help.

I'm considering booking some BA flights which are shown as H fare code. Now I've been looking around everywhere (probably in the wrong places!), but I just can't seem to track down a definitive answer. Sorry that I've started a new thread but I just didn't know on which thread to ask the question.

Are these flights semi-flexible, and if so what exactly does that mean?

Sorry if it's a dumb question but I've never booked into that fare code before.

Thanks in advance for your help.