An 18 hour flight sounds completely miserable
Especially for anyone close to this one:
Trust me, it is. Done that route a few times
I did JFK-Hong Kong (and back) a few years ago.Exactly 16 hours (wheels up to wheels down) heading westbound.And that was in coach! However,for years my policy on flights over a couple of hours has been to spend as much time as possible walking around.That's because of advice my cardiologist gave me to prevent DVT and related problems.I've done several other long flights as well...15 hours to Australia,14 hours from Dubai to JFK and a few others (all in Coach).If you have a plan they're not *that* bad.Of course they'd be better in Business Class or First Class.
Actually, that flight is by Singaport Airlines and is all business class. Their seats are 30" wide (lots of room compared to the roughly 18" you get in a regular coach seat) and can be reclined fully flat into a bed. They have personal entertainment stations embedded with lots of movies, TV, and music. Service on Singapore Airlines is apparently incredible too.
I was once booked on this flight but my trip got cancelled. My brother did take it though and he said it was the best flight he'd ever been on.
My daughter has taken the Newark to Singapore flight twice in the last year. Loves the seats, accommodations and service. Not one complaint. By the way, she has done the NY- LA- Singapore. Increased hrs/hassle with “layover”, etc