Originally Posted by
ethernal
There is no "agreeing to waive" timeout - crews have either timed out or they haven't. That said, DL does try to add in buffer to crew timing within reason - most would be okay with anything less than a 2 hour delay (especially those that were then scheduled to fly a final leg with RON). Beyond that is when things start getting dicey.
I am sure that some flights are not making it to MSP tonight, but that should be the minority.
I was on a longhaul flight recently where the cabin crew told me that they could have opted out due to a bad delay, but they opted to continue so as to get their hours in without being forced to substitute some milk runs. Farther in the past, I recall a delayed laonghaul flight where some of the FAs stayed and others opted out and we got substitutes who were reassigned from another flight; it could not have been a difference in whether they had already worked a flight that day.