Hi,
Flying out 7am from DM airport and need re entry permit.
Could someone tell me if office would be open 6am, where it is located and what document should i provide.
Thanks
TLDR : Answer Summary
The re-entry permit office at Don Mueang Airport (DM) is open 24/7, so it will be accessible at 6am. The office is located just behind the immigration counters with a large sign saying "RE-ENTRY PERMIT". To obtain a re-entry permit, you need to bring a passport-sized photo and allow some extra time for processing.