What a Vietnam and Cambodia tour with Hoi An gains from a longer stay there
Many UK itineraries for Vietnam and Cambodia give Hoi An two nights. Clothes made by an Ancient Town tailor normally need a fitting and a return visit, which a two-night stop rarely allows. An Bang beach is about 10 minutes from the Ancient Town. The My Son Cham sanctuary, another UNESCO site, is around 40 km inland, a half-day trip if you want to add it.
The cost of that time is what the route skips: no Hue, no Mekong Delta, no Phnom Penh, and a short stay in Saigon. For the imperial city, look at the version with Hue. For the Cambodian capital, the Vietnam and Cambodia tour via Phnom Penh runs south to north. For beach time, look at the Mui Ne version.
Which months suit Hanoi, Hoi An and Siem Reap together?
| Stop | Best months | Months to plan around |
|---|
| Hanoi and Halong Bay | April to June, September to November | December to March is cool and often misty. |
| Hoi An | February to August | Rain from October to January, with seasonal flooding in October and November. |
| Ho Chi Minh City | December to April | Wet season from May to November. |
| Siem Reap | November to February | Hottest from March to May, then monsoon from June to October. |
No single month sits in the best window at all four stops. February and April each catch three: February with a cool, grey north, April with Siem Reap at its hottest before the rains. Autumn departures put your Hoi An stay in the wet season, so if Hoi An is why you chose this route, avoid October and November.
Entry rules for UK passport holders in Vietnam and Cambodia
British citizens can enter Vietnam without a visa for up to 45 days. Before leaving the arrival airport, check that the date on your entry stamp is 45 days from arrival, because immigration will not change it later.
Cambodia is different. You need a 30-day tourist visa. Apply for an e-visa at least four days before travel, or buy a visa on arrival with US dollars and a passport photo. Air arrivals also complete the free e-Arrival card in the seven days before landing.
Both countries want at least six months left on your passport, and Vietnam asks for two blank pages. Our Vietnam and Cambodia travel guide covers the wider planning, and FCDO advice is worth rechecking a week before you fly.
Flight times and the open-jaw routing
You fly into Hanoi and home from Siem Reap, so no time is lost doubling back. A nonstop flight from London to Hanoi takes around 12 hours. No airline flies nonstop between the UK and Siem Reap, so the homeward journey connects.
Siem Reap-Angkor International Airport opened in October 2023, about 50 km east of the town. Allow roughly an hour for the transfer on arrival and departure days. Your UK departure airport and connection are confirmed in your quote. For other routes that combine countries, see our multi-centre holidays in Asia.