@brion flying is about 1.5 hr in the air, but with getting to the airport, check-in, security, then arriving and getting out of the destination airport, I anticipate about 6 hours door-to-door.
That's still a big advantage over driving or train! It only makes sense if price or carbon footprint are *really* important to you.
Once you have 3 or 4 people travelling, that 2-day drive starts to look really economical.