Business class Boston to South Korea from 2250$ with United, Delta (A350 Suites) or JAL.
Flights originating from Washington and Indianapolis are also available.
Flight available until November. Examples:
Boston to Seoul for 2250$ with Delta One suites A350 via Atlanta or with United via San Fransisco:
Boston to Busan for 2505$ with JAL via Tokyo:
One way flights are also available for half the price!
You have to book until 7th August.
Thanks to OMAT.