From October 17, 2016, Warsaw - Seoul with LOT Polish Airlines. The route is loaded in the system and reservations can be made. There will be 3 weekly flights on Mondays, Wednesdays and Saturdays.
Between October 17 and October 29, the schedule will be:
LO 097 Warsaw 14: 40 - 08: 15 + 1 Seoul
LO 098 Seoul 10: 05 - 15: 50 Warsaw
After 30 October, the schedule will be:
LO 097 Warsaw 14: 40 - 09: 20 + 1 Seoul
LO 098 Seoul 10: 50 - 15: 25 Warsaw
Bucharest - Warsaw - Seoul
The flights will be honored with Boeing 787-8 Dreamliner aircraft. The flight duration will vary between 10 hours and 12 hours. The aircraft are configured in 3 classes: LOT Business Class, LOT Premium Class and LOT Economy Class.
LOT will introduce Korean-specific products to the menu, and the entertainment system will include Korean films. What's more, the entire entertainment system will be available in Korean as well, and there will always be a Korean-speaking crew member on board.
LOT is the first air carrier in Central and Eastern Europe to connect South Korea with Polish and European cities. Even Romanians can travel on the route Bucharest - Seoul via Warsaw. Rates start at 300 euros / segment.
Either way, you have 6-7 hours in Warsaw. Given that the airport is very close to the city, you can run a flight through the center of Warsaw.