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Airport Shuttle Bus
Airport bus link is running between both airports from 5 am till Midnight every day.
To go from Suvarnabhumi (Main Bangkok Airport)
Don Mueang: get on the shuttle bus at Level 2 between gates 2 and 3
To go from Don Mueang - Suvarnabhumi: take the Shuttle bus at the ground floor arrival of terminal 1. Departure from Don Mueang is outside Gate 5 it is easy to find with a blue counter nearby.