In terms of distance, Medan is closer to Bangkok than Jakarta to Bangkok. Check the map if you haven't ever taken a look.
I thought Medan leadtime is longer than Jakarta's because the vessel need to go to Jakarta Port first.
May I interrupt your conversation a little, since the vessel to Medan port have less available services and some we can catch the vessel that transshipment Singapore port or catch the vessel that direct shipment.
Which, depending on loading date match with any agent.
Normally T/T to Medan port estimate 11-12 days, if direct vessel T/T 6-7 days but services of direct vessel have 1-2 agent.
However, we will try catch direct vessel but the vessel full very fast and we shall booking before loading 1-1.5 month.