Along similar lines to the OP, I'm scheduled to arrive at BKK on SQ next Saturday at 8.35am on a flight from SIN (overnight at SIN transit hotel) and need to get to Krabi.
Options include:
1. 9.25am BKK to KBV direct on Banglok airways, A$125
2. 11.40am DMK to KBV direct on AirAsia, A$73, or $112 flexible.
3. 10.00 or 10.10am BKK to KBV via USM on Bankok airways, A$286 (arrives 20 min later than option 2)
4. 1.15pm BKK to KBV direct on TG, A$177
5. 1.50pm DMK to KBV direct on AirAsia, A$65
6. 2.15pm BKK to KBV direct on Bangkok airways, A$125
7. 2.25pm DMK to KBV direct on AirAsia, A$56
My order of priority:
1. Earliest arrival;
2. Lowest price;
3. Least waiting;
4. Shortest flight time.
The above flights are in order of my first priority.
From what I've gleaned from the Internet, option 1 is too tight, so leaning towards option 2. I've read varying opinions on this being fine or too tight, given transfer from BKK to DMK. I'm not averse to cutting it fine, as I hate waiting (third priority). Transfer options seem to be:
1. free shuttle bus. This can take 45m - 2 hrs depending on traffic - Saturday morning I suspect (hope) it will be shorter;
2. Train - takes 45m - 1hr, costs about 150THB (A$6). Likely to be more reliable than shuttle.
3. Taxi. Likely to be more expensive than train and same traffic issue as shuttle.
I also looked at flying direct from SIN on star (SQ ticket is flexible, so may be able to change at nominal cost), but seemed to be expensive - almost S$200.
Thoughts on flight and transfer options would've appreciated.