Originally Posted by
yosithezet
My sister will arrive on JL032 from BKK that lands at 6PM.
Taxi from Haneda to Grand Hyatt should cost 7,000 ~ 9,000 yen.
Depending on the amount of luggage, I would take the monorail to its terminus (Hamamatsucho) and get a taxi from there. Total cost (Monorail + taxi) should be under 2,500 yen.
(Or if I'm really feeling frugal, I'd get the subway from Hamamatsucho / Daimon to Roppongi).