Originally Posted by
emcampbe
Since when? AFAIK, Transborder fares have always had the same rules as domestic fares via-a-vis layovers - with a max of 4 hours (or next available flight) for a layover, with anything more becoming a stopover.
UA has been playing around with the "next available flight" language. Note what was posted: you have 12 hours provided that you take the next flight. On domestic fares you'll currently see 4 hours posted and no mention of the next available flight at all.