Thanks in advance to anyone who might help.

My wife made a reservation for a summer trip with UA about 3 months ago and now her friend will be in Europe at about the same time and she wanted to change the return portion (pushing it 1 week back and returing from MOW rather than BCN).

I was wondering if there's anyone who could help with UA policies on this since a search came up empty.

When I flew ages ago, NWA would usually allow you to change just the return portion no problem based on the round-trip price once your trip commenced. If this was an option, I'd take the risk and let UA do this, but I don't know UA's policy on this.

Aside from that, would it be possible to change the return portion without repricing the whole trip. The prices aren't much higher but the particular flight she's on seems to have gone up and would require her to travel separate from her family which would be less than ideal.