Day tour price is designed to start and finish in the same city and valid for 10 hours. You can still book a trip to finish in a different city from your departure city, however, the 10-hour limit will be reduced so that the driver can come back to the departure city within 10 hours. Once you make your booking, we will calculate the estimated driving time for the driver to come back and let you know your total hours in the Voucher/Confirmation Email. 

Seoul City and Incheon Airport are considered one city.
✓ Seoul -> Stopover -> Incheon Airport : 10 hours
✓ Incheon Airport -> Stopover -> Seoul : 10 hours

✓ Seoul -> Nami Island -> Petite France -> Alpensia Resort : 7 hours 
(Alpensia -> Seoul takes about 3 hours for the driver)
✓ Yongpyong Resort -> Trout festival -> Seoul : 7 hours
(Seoul -> Yongpyong takes about 3 hours for the driver)

Busan City only includes Busan. Neighboring cities like Ulsan or Pohang are considered different cities. 
✓ Ulsan -> Stopover -> Busan : 9 hours
✓ Busan -> Stopover -> Pohang : 8 hours