No. Airlines treat them as separate cities. If you book BKK arrival and DMK departure (or vice versa), that's self-transfer — you need to collect bags, transfer airports yourself, and check in again. Minimum 5 hours, ideally overnight. No protection if you miss connection.

BKK by far. Direct buses from BKK to Pattaya (฿143, 2 hours) and Hua Hin (฿325, 3.5 hours) leave from Level 1. DMK requires going into Bangkok first then out again — adds 90+ minutes. For eastern seaboard, BKK is designed for it.

No — it's just different. DMK is faster for immigration, closer to northern Bangkok, and usually cheaper flights. The problem is lack of train. If you're staying near Mo Chit, Ari, or doing visa runs, DMK is actually better. The hate comes from people landing at DMK expecting BKK infrastructure.

Opened 2023, fully operational 2026. SAT-1 is for some international flights (mostly Thai Airways). It's connected by automated train (3 min). Add 15 minutes to your BKK time estimates if flying Thai Airways long-haul. Signage is good, but it's a long walk. Immigration still in main terminal.

Check airline: Thai Airways, Bangkok Airways use BKK for domestic. AirAsia, Nok, Lion use DMK. If you have choice, BKK connections are smoother (same terminal, better lounges). DMK is fine but smaller, fewer food options during delays. For tight connections, BKK is safer.

BKK to Asok: meter ฿350-450 + tolls ฿75 = ฿425-525, 35-55 min (traffic). DMK to Asok: meter ฿280-380 + tolls ฿90 = ฿370-470, 30-70 min (high traffic variance). At 5pm, BKK can be faster due to train option. At 11pm, DMK is ฿50 cheaper. Grab usually ฿50-100 more than metered but fixed price.

BKK: Yes, landside Level 2 near food court has benches, security patrols, reasonably safe. Airside has sleep pods (฿600/3h). DMK: Not recommended — closes partially overnight, limited seating, colder AC. For early flights, get airport hotel: BKK has Novotel connected, DMK has Amari 5 min away (฿1,800).