We originally had planned an adventurous trip from Bangkok to Siem Reap via train and tuk-tuk to the Cambodian border, crossing the border on foot, and then finding a bus, van, or cab to take us to Siem Reap. It sounded like fun until we found out that the train portion was 3rd class with no air conditioning. The entire trip? Around 9 hours. Instead, we opted for a one-hour flight from DMK airport in Bangkok to Siem Reap. It ended up being a much better plan.