Originally Posted by
golfmad
They will provide alternative flights on their own network. Just no hotel etc. They typically will not rebook on other airlines.
Not entirely true, and if you hold status of some sort and you miss the last flight they will put you on a competitors metal. Granted, OP took WN, which still (?) doesn't interline with anyone, so would be moot. But AA will put you on UA/DL etc. There was also an article that spelled some of this out for people if they are curious:
https://viewfromthewing.com/american...during-delays/