Key Takeaways
- Phnom Penh now flies from a brand-new airport. In September 2025 the capital switched to the new Techo International Airport (KTI), a 2 billion dollar gateway about 20 km south of the city. It took over every commercial and international flight from the old Phnom Penh International Airport (Pochentong), which now handles only military, domestic and private aviation.
- Siem Reap is the gateway to Angkor Wat. Siem Reap-Angkor International Airport (SAI) opened in October 2023, replacing the old in-town airport to protect the Angkor temples from traffic and pollution. It is the country's busiest tourism airport.
- Sihanoukville serves the southern coast. Sihanoukville International Airport (KOS) is the gateway to Cambodia's beaches and islands on the Gulf of Thailand. It boomed on Chinese charter traffic before 2020 and now runs a smaller mix of domestic and regional flights.
- No nonstop flights to the United States. No Cambodian airport has scheduled nonstop service to the US. Travelers connect through an Asian hub such as Bangkok, Singapore, Seoul, Hong Kong, Taipei or Doha.
- A compact, regional network. Most flights link Cambodia to China, Thailand, Vietnam, Singapore and Malaysia. Long-haul service beyond Asia is still thin, so most intercontinental trips route through a regional hub.
Cambodia runs a small but fast-changing airport network built around three international gateways: the capital, Phnom Penh, the temple city of Siem Reap, and the coastal resort city of Sihanoukville. Two of the three now operate from brand-new airports built in the last few years, a sign of how quickly the country is investing in aviation and tourism. The national carrier, Air Cambodia (formerly Cambodia Angkor Air), anchors the schedule alongside local low-cost operators and a growing list of foreign airlines.
Below we map and rank Cambodia’s airports by the number of nonstop destinations each one regularly serves, drawn from live route data on AirportRoutes. Because the figures come from observed flight data, a sample rather than a complete published timetable, we treat them as a guide to relative connectivity rather than exact official totals. Cambodia is in the middle of a big airport handover, so we map Phnom Penh’s traffic at its new home, Techo International.
Are there direct flights from Cambodia to the US?
There are no scheduled nonstop flights between Cambodia and the United States. The route data shows no US service from Phnom Penh, Siem Reap or Sihanoukville, and Cambodia’s airlines do not currently operate long-haul aircraft to North America.
To reach the US, travelers from Cambodia connect through a major Asian hub. The most common one-stop options run via Bangkok, Singapore, Hong Kong, Taipei, Seoul or Doha, where carriers such as Singapore Airlines, Cathay Pacific, EVA Air, Korean Air, Qatar Airways and others continue across the Pacific or via Europe to most large US cities.
Ranked
Major Airports in Cambodia by Nonstop Destinations
Ranked by regularly-served nonstop destinations, busiest first.
| Airport | IATA | Nonstop | City / Area |
|---|---|---|---|
| 1. Phnom Penh (Techo) | KTI | 24 | Phnom Penh |
| 2. Siem Reap (Angkor) | SAI | 16 | Siem Reap |
| 3. Sihanoukville | KOS | 9 | Sihanoukville (approx.) |
A closer look at Cambodia’s main airports
✈️ Phnom Penh, Techo International (KTI)
Techo International Airport is the new face of Cambodian aviation. Opened in September 2025 about 20 km south of central Phnom Penh in Kandal province, the roughly 2 billion dollar airport was designed by Foster + Partners and built to handle 13 million passengers a year at first, rising toward 50 million in later phases. It replaced the old Phnom Penh International Airport (Pochentong) for all commercial and international flights, making it the country’s primary gateway.
Serving the capital, Phnom Penh reaches roughly 24 regularly-served nonstop destinations in the route data, the widest network in the country. The schedule is overwhelmingly regional, with frequent links to Guangzhou, Bangkok, Singapore, Kuala Lumpur, Ho Chi Minh City, Shanghai and Hong Kong, plus a thin domestic network. There are no nonstop intercontinental routes, so long-haul passengers connect through an Asian hub.
Main airlines: Air Cambodia (formerly Cambodia Angkor Air), Cambodia Airways, AirAsia Cambodia and Sky Angkor Airlines, plus foreign carriers including Spring Airlines, XiamenAir, Cathay Pacific and Bangkok Airways. See the full route map for Techo on AirportRoutes →
🛕 Siem Reap, Angkor International (SAI)
Siem Reap-Angkor International Airport is the gateway to Angkor Wat, the vast temple complex that draws most of Cambodia’s foreign visitors. It opened in October 2023 about 40 km east of the temples and replaced the old Siem Reap airport, which sat much closer to the ruins. Officials moved the airport farther out specifically to ease traffic and pollution around the fragile Angkor site.
Serving Siem Reap, SAI reaches around 16 regularly-served nonstop destinations, almost all of them short and medium-haul leisure routes. Top links include Bangkok, Ho Chi Minh City, Singapore, Kuala Lumpur and Da Nang, alongside domestic hops to Phnom Penh and Sihanoukville. Traffic is heavily tied to the tourism calendar.
Main airlines: Air Cambodia, Cambodia Airways and AirAsia Cambodia, plus foreign carriers including Vietnam Airlines, Thai AirAsia, Singapore Airlines and Bangkok Airways. See the full route map for SAI on AirportRoutes →
🏖️ Sihanoukville (KOS)
Sihanoukville International Airport sits near Cambodia’s main port city on the Gulf of Thailand and is the gateway to the southern beaches and the islands of Koh Rong and Koh Rong Sanloem. Between 2017 and 2019 it boomed on a wave of Chinese charter flights tied to Sihanoukville’s casino industry, then lost most of that traffic after the 2019 online-gambling ban and the 2020 travel shutdown. It is now recovering with a smaller, more balanced schedule.
Sihanoukville is under-counted in the route sample, but other flight data shows it serving roughly nine destinations, a mix of domestic flights to Siem Reap and Phnom Penh and regional links to Kuala Lumpur, Ho Chi Minh City and several Chinese cities. It is primarily a leisure and domestic airport.
Main airlines: Air Cambodia, Cambodia Airways, AirAsia, Sky Angkor Airlines, Mahogany Air and visiting Chinese carriers such as Ruili Airlines.
What happened to the old Phnom Penh airport?
The old Phnom Penh International Airport, long known as Pochentong, sat close to the western edge of the city and carried the capital’s flights for decades. When Techo International opened in September 2025, every scheduled passenger and cargo flight moved across to the new site. The original airport keeps the famous PNH code in some systems but no longer takes commercial international flights. It is being repurposed for military aviation, domestic operations and private jets, and parts of the valuable inner-city land are slated for redevelopment.
Siem Reap went through the same kind of switch two years earlier, when the new Angkor airport replaced the old in-town field in 2023. If you are booking a Cambodia trip, double-check the airport name and code on your ticket, because guides and maps written before these handovers can still point to the closed sites.
Cambodia’s other airports
Beyond the three international gateways, Cambodia has a scatter of smaller airports that mostly handle limited domestic or charter service. Battambang, Koh Kong, Kampong Chhnang, Kratie, Stung Treng and Mondulkiri have airfields of various sizes, though regular scheduled flights come and go depending on demand. For most travelers, Phnom Penh, Siem Reap and Sihanoukville cover the realistic options, with onward domestic flights or road transfers reaching the rest of the country.
Planning a trip in 2026: a border dispute between Cambodia and neighboring Thailand flared again in late 2025, and aviation authorities have issued notices that reroute some flights near the shared border. Cambodian airspace remains open and the main airports are operating normally, but routings and schedules can shift at short notice, so it is worth checking the current status before you fly. For live advisories, see safeairspace.net.
Airport rankings, nonstop-destination counts, served cities and connections are drawn from live AirportRoutes route data (observed AeroAPI flight data, a sample rather than a complete published schedule). Airport history, the Techo and Siem Reap-Angkor openings, and other notable facts are cross-checked against the cited references. The map is a Mappr original.
Primary Data Source:
- AirportRoutes: major airports and routes, Cambodia – Live route data: per-airport nonstop destinations, served cities, airlines and connections.
Reference:
- Wikipedia: Techo International Airport – Opening date, location, cost, capacity and the handover from the old Phnom Penh airport.
- Wikipedia: Siem Reap-Angkor International Airport – Opening in 2023 and the replacement of the old Siem Reap airport near Angkor.
- Sihanoukville International Airport – Current routes and airline operations at Sihanoukville, used to estimate its destination count.
- Locator maps: Google Maps / Google Static Maps – Per-airport location maps with airplane markers, generated via Google Static Maps.
Image Sources:
- Map by Mappr – Map of major airports in Cambodia, a Mappr original built from AirportRoutes data and Natural Earth boundaries.
🌏 More maps & data for Cambodia
Browse more: All airports by country
