Going from downtown Bangkok to Don Muang Airport? Normally I take a taxi but this time I was early so I took the BTS to Mo Chit for max. 40 Thai baht and then the A1 bus to Don Muang Airport for 30 Thai baht. A quick and cheap way of getting to the airport..... If you are alone and do not have much luggage with you. Otherwise I would advise to take a taxi. Tollway would cost 120 Thai baht and taxi meter about 220 Thai baht. If you like some help with organizing your holiday in Bangkok or anywhere in Thailand send me an email at Little Elephant Traveling in Thailand.