Flying Boston → Seoul at the front of the plane
Booked well, Boston to Seoul in First Class is not an indulgence so much as arithmetic: a flat bed out of Boston Logan International Airport (BOS), hours of genuine sleep, and a first day in Seoul you don't lose to recovery.
Because no carrier flies true First Class nonstop on this pairing, the routing craft matters. ANA, Japan Airlines and Cathay Pacific each offer superb one-stop itineraries through their hubs — often at fares below what a nonstop business seat would cost, with a lounge stop that feels like part of the vacation.
British Airways operates its own lounge at Logan's Terminal E, giving First travelers a polished pre-departure experience before the London flights. Emirates and Lufthansa premium passengers use elevated partner facilities in the international terminal, which has been substantially modernized. The short taxi from downtown remains Boston's underrated premium amenity.
On timing: april brings cherry blossoms along the Han River and October sets the palaces against fall color — these are Seoul's two perfect months. May, June, and September are close behind. Late June through August is hot, humid, and punctuated by monsoon rain; winter is genuinely cold but crisp, with the city's food culture at its most warming and premium fares at their lowest.