Golden temples, steaming bowls of noodles and nights in shared dorms: the route every backpacker walks at least once.
Backpacking through Southeast Asia remains, two decades after the trail first went mainstream, one of the most transformative journeys out there: Thailand, Vietnam and Cambodia strung together by night buses, slow trains and border crossings you make on foot. This guide gathers the best time to go, how much it costs to travel per day at each budget level, the recommended route leg by leg and where to sleep without emptying your backpack of cash.
It's a trip of contrasts: the nighttime energy of Bangkok, the green silence of the rice terraces in northern Vietnam and the sleeping stone of the temples of Angkor, all tied together by that same feeling of finally being on the road with no fixed itinerary.
The essentials
When to go and how much it costs to travel Southeast Asia
Best time
November to March
Ideal length
18 to 25 days
Starting point
Bangkok
Level
Per person / day
What it includes
Backpacker
USD 20–25
Hostel dorm bed, street food, local transport and temples that are free or cheap to enter.
Mid-range
USD 45–60
Private room or 3-star hotel, the occasional group tour and one leg on a low-cost domestic flight.
Premium
USD 120 or more
Boutique hotels, private guided tours, spas and domestic flights at convenient times.
Budget on the ground, per person, excluding international flights.
Recommended route
How to link Thailand, Vietnam and Cambodia in one trip
The classic route enters through Bangkok, climbs into northern Thailand, crosses into Vietnam by cheap flight or overland from Laos, runs down the Vietnamese coast from north to south and closes in Cambodia before flying home from Siem Reap or Phnom Penh.
Days 1 to 7 · Thailand. Bangkok, Chiang Mai and a breather in the mountains of Pai.
Days 8 to 17 · Vietnam. Hanoi, Ha Long Bay, the old town of Hoi An and the pulse of Ho Chi Minh City.
Days 18 to 22 · Cambodia. The temples of Angkor in Siem Reap and the calm of Tonlé Sap lake.
First stop
Thailand — the gateway
Almost every backpacker starts here, and for good reason: Bangkok welcomes you with temples that gleam by day and night markets that smell of lemongrass and grilled satay. From there the road climbs toward Chiang Mai, where dark-wood temples mingle with specialty coffee shops, and ends on the mountain switchbacks of Pai, a town that keeps travelers longer than they planned.
Insider tip
Take the night train from Bangkok to Chiang Mai instead of the bus: it costs only a little more, saves you a night's hostel and wakes you up among the mountains.
Second stop
Vietnam — the backbone of the trip
Vietnam is the longest leg of the route and the one whose scenery shifts the most: the maze of alleys in Hanoi gives way to the limestone cliffs of Ha Long Bay, and the coast then drops down to Hoi An, where silk lanterns light up a quiet river, before reaching the vibrant chaos of Ho Chi Minh City. The coastal train, the famous "Reunification Express," is itself part of the experience.
Insider tip
Book the Ha Long Bay cruise with at least one night on board: waking up among the limestone islands is worth every hour of lost sleep.
Third stop
Cambodia — the temple that crowns the route
Cambodia closes the trip with the stop many wait for most: the temples of Angkor, a complex so vast you explore it by bicycle or tuk-tuk over two or three full days. Siem Reap, the base town, blends night markets with a food scene that grows every year, and a short distance away Tonlé Sap lake offers a serene contrast of floating villages.
Insider tip
Buy the three-day Angkor pass and enter the main temple before dawn: the early light and the absence of crowds change the experience entirely.
Where to stay
Where to sleep on the Southeast Asia backpacking route
Bangkok — shared-dorm hostels near Khao San Road for the social scene, or quiet guesthouses on the Sukhumvit side. Find stays in Bangkok →
Hanoi — boutique hostels in the old town, ideal as a base before and after Ha Long Bay. Find stays in Hanoi →
Siem Reap — guesthouses with a pool steps from Pub Street, perfect for resting between temple days. Find stays in Siem Reap →
What to consider
What to check before backpacking Thailand, Vietnam and Cambodia
Visa — Thailand and Cambodia usually allow entry with no prior paperwork or with a visa on arrival depending on your nationality; Vietnam requires an e-visa arranged in advance for most travelers.
Climate — the dry season (November to March) avoids the most humid heat and the monsoon rains from May to October.
Border crossings — overland crossings between countries can take several hours; it's worth adding a buffer day with no fixed plans around each border.
Cash — this is a region where local cash is still king; bring a card with no ATM withdrawal fee and some US dollars for emergencies.
Safety — tourist areas are generally safe; the biggest risk is tuk-tuk and unofficial-tour scams, easy to avoid by booking ahead.
Iris tips
Pack light: a 40-liter backpack is enough for the whole trip, and having your laundry done costs just a couple of dollars in any city.
Always agree on the tuk-tuk fare before you get in; in all three countries haggling is a normal part of travel culture.
An authentic experience — add a street-food cooking class in Chiang Mai or Hanoi: you learn more about local culture in an ingredient market than in any museum.
Book with Tripsy
Book the essentials of your Southeast Asia backpacking route