Flying San Francisco → Seoul at the front of the plane
Booked well, San Francisco to Seoul in First Class is not an indulgence so much as arithmetic: a flat bed out of San Francisco International Airport (SFO), hours of genuine sleep, and a first day in Seoul you don't lose to recovery.
From San Francisco, the marquee product on this route is Japan Airlines First Class — serenity engineered: the A350's whisper-quiet suites and Japan's most graceful service. Depending on your dates, ANA, Japan Airlines and Cathay Pacific all present compelling options, each with a distinct suite and service style.
SFO's International Terminal offers a refined pre-departure landscape: Emirates operates its own lounge, and British Airways and Lufthansa First travelers receive dedicated premium handling and elevated lounge access before departure. Japan Airlines First passengers use premium partner facilities. The terminal's calm, light-filled architecture makes it one of the more pleasant international departures in the country.
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.