Don Muang Airport is the least known of Bangkok's airports but it is the one that was there first. It welcomed its first commercial flight in 1924 and is Asia's oldest operating airport. Nowadays it operates mainly domestic flights in Thailand and flights to neighboring countries and has become the ''low cost airlines'' hub, the top 3 low cost airlines operating in Thailand, Nok Air, Thai Air Asia and Thai Lion Air, are based in Don Muang. the airport is accessible by train or by road with several dedicated bus lines and one of the extensions of the metro currently under construction will also serve it in the future.
Don Muang Railway Station has moved in early 2023. The station at road level has been closed and the new one is now above the road where Red Line arrives. The suspended walkway connecting the railway station and the airport is located at the end of Don Muang Terminal 2 on the 3rd floor, the floor of the airlines' check-in desk for domestic departures. It is therefore very practical for connecting a train to a domestic flight. If inside the airport, to get to the train station, follow the Red Line. The walkway is at the end of Terminal 2 3rd floor, you walk along the 7 Eleven, then the car park, and at the end of the car park, you take the footbridge at the right (do not go straight away).
More information on the Red Line
You will find here the timetable for trains from Bangkok Hua Lamphong to Don Muang and here the timetable for trains from Don Muang to Bangkok Hua Lamphong
Count roughly 1h30 to get from one airport to the other.
Information and timetables on the page about the free shuttle between Suvarnabhumi and Don Muang
Information and timetables on the page about Don Muang bus service
Detailed information, timetables and fares on the page about Airport Limo Bus
More information here on Bangkok taxis
If once you have landed at Don Muang airport, you want to go directly to another province, it is possible by taxi or private transport with drivers like minivans if you travel in group or family. But there is no long distance bus service at Don Muang like the one existing at Suvarnabhumi.
The most popular routes are (click on them if you want to book through my partner):