Getting Between Stops
Three short flights do the work. Ho Chi Minh City to Siem Reap takes about an hour. Siem Reap to Phu Quoc usually connects through Ho Chi Minh City, with the Phu Quoc leg taking about an hour. Phu Quoc back to Ho Chi Minh City takes about an hour.
Book flights with sensible connection times and check bag limits. Siem Reap Angkor International Airport (SAI) is about an hour from town by car. Hotels arrange pickups and shuttle buses also run.
In Ho Chi Minh City, use the Grab app for cars and bikes. It shows the fare up front. In Siem Reap, hire a tuk-tuk and driver for the day at a fixed rate, or an air-conditioned car for longer trips. On Phu Quoc, Grab cars and resort shuttles cover most trips. Scooters are widely rented, but traffic on the main roads can be unpredictable.
Where to Stay
In Ho Chi Minh City, the big romantic choices cluster near the Opera House. Park Hyatt Saigon has a deep, calm pool. The Caravelle and the Hotel Continental Saigon carry decades of history. The Reverie Saigon, on the riverfront, goes for maximal Italian glamour. Hotel des Arts Saigon is more intimate.
In Siem Reap, Raffles Grand Hotel d'Angkor has hosted travelers since the early 1930s. Amansara offers intimate suites with private plunge pools and its own temple guides. Park Hyatt Siem Reap is a stylish central option. Phum Baitang, among rice paddies just outside town, has stilted wooden villas, some with private pools.
On Phu Quoc, Long Beach has the best sunsets and the most restaurants, with La Veranda and the Regent Phu Quoc. The JW Marriott Phu Quoc Emerald Bay sits on Bai Khem in the south.
When to Go
December to February is the sweet spot for all three stops. Siem Reap has clear skies and its lowest temperatures, with highs around the upper 80s Fahrenheit. Ho Chi Minh City is sunny and slightly less humid. Phu Quoc's west coast is calm and sunny. This is peak season, so book early, especially around Christmas and New Year.
Late November and March are also good, though March gets hot at Angkor. April is the hottest month in Siem Reap, which makes temple visits an endurance test.
From May to October, rain arrives across the region, often in short, heavy bursts. Angkor's moats fill and crowds thin. Phu Quoc's west coast gets rough, so choose a resort on the southeast around Sao Beach or Bai Khem in those months. Tet in late January or February closes many family-run businesses in Vietnam.
Budget and Booking
Plan on roughly $250–800 a night for two across good hotels. Ho Chi Minh City and Siem Reap are strong value, with excellent boutique hotels well below US prices. Amansara and Phu Quoc's top resorts sit at the high end. All figures are approximate.
Book Siem Reap and Phu Quoc first for December and January, when the best rooms sell out. Book the regional flights once your long-haul tickets are set.
Other costs include the Angkor pass, a tuk-tuk driver and a temple guide, the Phare circus, a Tonle Sap boat trip, the street food tour, a snorkeling day and the Hon Thom cable car. Street food and casual seafood are inexpensive in both countries.
Make It Shorter or Longer
For eight days, cut Ho Chi Minh City to one night and spend four on Phu Quoc. Or skip Phu Quoc and add two nights in Hoi An instead.
With two weeks, add Hoi An between Siem Reap and Phu Quoc. Fly to Da Nang, about 45 minutes from Hoi An, for four nights of lanterns, tailors and An Bang beach. Hoi An is best from February to April, so this version suits a late winter honeymoon.
Couples who want a quieter beach can swap Phu Quoc for Con Dao, about an hour's flight from Ho Chi Minh City. Six Senses Con Dao is the island's honeymoon address. Con Dao's calm season runs from about March to June, so it suits a spring trip better than a winter one.
Honeymoon Tips
At Angkor, both of you need covered shoulders and knees. The rule is enforced at the main temples. Bring a hat, sunscreen and water. Plan the temples for early morning and late afternoon.
Use Grab in Ho Chi Minh City to avoid haggling. Keep your phone in a front pocket in busy areas.
On Phu Quoc, respect any flags on west coast beaches outside the dry season. Debris and rough surf are more common from May to October.
Dengue is present in both Vietnam and Cambodia. Use repellent at dawn and dusk. If you're pregnant or hoping to be soon, check CDC travel health notices for both countries before booking. Entry and visa rules depend on your citizenship and can change at short notice, so check the official government website before you book.