Originally Posted by dordal

Some rather snarky comments here (@mduell go see any of the ‘delayed/cancelled flights’ threads for plenty of reports where United doesn’t post a delay in advance and/or does rolling delays for hours... ) but the info is correct. You are very unlikely to have any ability to switch unless the flight is actually delayed.

Day of flight you might be able to call and ask for a ‘same day change’ to the next day; the fee for this is $75 per pax and the space has to be available. Officially you can’t change to the same flight the next day, but sometimes you’ll get an agent who will do it anyway.

Transatlantic long haul does get priority in weather, so personally I’d just go to the airport as planned. You’ll probably be fine.

And welcome to FT!