Osaka-Busan-Seoul 9 days packed.

Osaka-Busan-Seoul 9 days packed, some may not be able to do it, but we did it! Everything was booked through Trip.com, including hotels, accommodations, and all flight tickets, as well as electric train tickets. I must say it was very convenient. Even if the flight changed gates, the Trip app always notified us, and it also informed us which baggage carousel to pick up our luggage from. It was really great. For your next trip, don't forget to book through Trip.com!