Cambodia's airports at Phnom Penh and Siem Reap serve a destination where the transfer from the terminal to the hotel involves specific city geography. Siem Reap Airport to the old market area, the Pub Street district, or the hotel zone north of Angkor involves a short road transfer worth pre-booking for timing reliability and luggage handling. Phnom Penh Airport to specific addresses in the BKK1 district, the riverfront, or Toul Tom Poung requires a driver who knows the city. For transfers between Siem Reap and Phnom Penh by road — a six-hour journey through the Cambodian countryside — a pre-arranged vehicle with the correct timing is the comfortable alternative to bus connections.