Wow, some great prices. I looked at leaving EWR on a Thursday around noon arriving HND Friday at 9:30pm and home Saturday leaving 7:40pm and landing in EWR Sunday 10:40am (about 1/2 day in the city). A great MR if you need some Star Alliance miles.
Wife should just hit 61k miles on UA this year but she's not willing to do this for Platinum. I would push if she was closer to 1K though