There's no nonstop from London: you connect once, in Bangkok, Singapore, Ho Chi Minh City, the Gulf or China. The fastest trip seen, via Bangkok, takes just under 14 hours. You land at Techo, Phnom Penh's new airport, about 20 km south of the city.
Photo by sam onn chan on Unsplash
Boarding pass · at least one stop
one way · London, from
Search your dates
Today's best fare
£285
fare checked October 12, 2026; it changes with your dates
Compare on AviasalesAffiliate link · opens in a new tab
Bangkok, Singapore, Abu Dhabi, Ho Chi Minh City and Guangzhou all have nonstops to Phnom Penh and nonstops from London. From Dubai and Doha, the plane stops once more on the way.
Connecting in the Gulf? Check your flight close to departure. Europe's aviation safety agency advises its airlines to avoid parts of Gulf airspace until at least November 16, 2026. Emirates, Qatar Airways and Etihad keep flying through their hubs, but schedules can change at short notice.
Thai Airways or EVA Air, then Thai, Bangkok Airways or Air Cambodia
Bangkok: 3 nonstops a day from Heathrow, then several flights a day to Phnom Penh, about 1h 20m. 13h 55m, the fastest seen
Right for you if you want the shortest trip, or a few days in Thailand.
See flights on Aviasales Affiliate linkSingapore Airlines
Singapore: 4 Heathrow nonstops a day, then 3 flights a day to Phnom Penh
Right for you if you want a full-service airline on both legs and plenty of times.
See flights on Aviasales Affiliate linkVietnam Airlines
Ho Chi Minh City: 3 Heathrow nonstops a week, then a daily flight to Phnom Penh, under an hour
Right for you if you're also visiting Vietnam and the Mekong Delta.
See flights on Aviasales Affiliate linkEtihad Airways
Abu Dhabi, then a nonstop of about 7 hours, 4 to 6 a week
Right for you if you want a single Gulf connection with no extra stop.
See flights on Aviasales Affiliate linkEmirates
Dubai, then a stop in Singapore on the daily flight
Right for you if you want one airline end to end, every day, from Heathrow, Gatwick or Stansted.
See flights on Aviasales Affiliate linkChina Southern
Guangzhou: 12 London flights a week, then 3 a day to Phnom Penh
Right for you if you're watching the price: it had the cheapest return seen.
See flights on Aviasales Affiliate linkVia Bangkok, the fastest seen
13h 55m
Air China via Beijing, cheap fare seen
19h 45m
One-way door-to-door flying time, connection included. Sources: Kayak and momondo UK, October 12, 2026.
According to Kayak, June is the cheapest month to fly, July and December the most expensive.
Lowest fare seen
Source: Aviasales via Travelpayouts, lowest fares seen in recent days, checked October 12, 2026. “–”: no fare seen for that departure month.
Techo replaced the old airport, which was in town. It's farther out: factor the transfer into your arrival plans, and fill in the free e-Arrival card within 7 days before you land.
1,500 riel
The Phnom Penh city bus line, 5:30 a.m. to 11:30 p.m., makes 4 stops as far as the train station. Cash, riel only; 1 to 2 hours depending on traffic.
$10 to $20
Desks in the arrivals hall, or Grab, PassApp and WowNow; fares are in US dollars. Allow 45 minutes to 1.5 hours for about 20 km.
from about $15
On 12Go, a private sedan can be booked ahead from about $15, an SUV for around $40. Handy for a night arrival or with family.
Phnom Penh sits where the Mekong meets the Tonle Sap: a good start to head up to Kratie or down to the delta.
Photo by Norbert Braun on Unsplash
Photo by Pierre André Leclercq on Wikimedia Commons · CC BY-SA 4.0
Photo by Vietnam Tri Duong Photographer on Pexels
Sources: routes, times and fares seen, Kayak and momondo UK (October 12, 2026); flights to Techo, AeroRoutes (2023 to 2026) and Etihad; Gulf airspace, EASA CZIB-2026-07R3 (September 30, 2026); entry rules, FCDO (still current at October 12, 2026) and Mekong Tourism (January 2025); transfers, Techo International Airport, Nomad Lawyer and GeckoRoutes (2026), 12Go (checked October 11, 2026). Updated October 12, 2026 by Pierre-Marie Coupry.