I'm soon booking to fly LHR-USM via BKK. I'm booking the flights with EVA air and Bangkok air separately. I have never done this before so have a few questions.
Do i have to recheck my bags at BKK or can i check them all the way to USM from LHR?
Also how long would i need to leave at BKK to get the connecting Flight. I suppose this depends on if i have to check in again. It seems that at 3:30 the airport is busy with European flights so would there be big queues at immigration ?