Field notesBased on our separate first-hand trips to Thailand (three visits) and Vietnam (2023)
Prices & rules last checkedJuly 2026
If you want two Southeast Asian countries in a single trip, Thailand and Vietnam pair as well as any. Bangkok and Ho Chi Minh City sit just an hour and a half apart by air — budget carriers fly several times a day — and yet the two trips feel completely different in character. Here is how to connect them efficiently: the order, the flight link, and how to split the nights.
The short version — the 8-day route at a glance
| Leg | Stay | Transport |
|---|---|---|
| Fly in → Bangkok | 3 nights (+ Ayutthaya day trip) | Long-haul arrival (Bangkok is a major international gateway) |
| Bangkok → Ho Chi Minh City | 3 nights (+ Mekong / Cu Chi) | About 1 hr 30 min by air (frequent budget flights) |
| Ho Chi Minh City → fly home | — | Direct long-haul departures (many leave late at night) |
We recommend running it Thailand → Vietnam, for two reasons: Bangkok is one of the region’s best-connected international gateways, which makes the start of the trip smooth; and the gradient feels natural — let bright, many-flavored Thailand acclimatize you to Southeast Asia, then descend into Vietnam’s denser, more labyrinthine world. The reverse order works too, but for a first Southeast Asia trip this direction flowed better in practice. The two countries share gentle prices, visa-free entry for many nationalities, and food in the leading role — yet the air of their streets is entirely distinct.
Leg 1 — into Bangkok (acclimatize on variety)
Bangkok is a city where the street stalls and shophouse eateries play the lead. Poached-chicken rice in Pratunam, pad thai, skewers and sweets at the night markets — the density of delicious things for a few dozen to a few hundred baht is on another level. Add the gold of the three great temples (the Grand Palace, Wat Pho, Wat Arun), the fever of a Muay Thai fight night, and the markets after dark. The full design lives in our Bangkok travel guide. Give one day to the ruins of World Heritage Ayutthaya and you get the contrast between living temples and a fallen royal capital. Want a beach as well? An extended version slots Phuket in before this loop (add 3 nights in that case).
Leg 2 — Bangkok to Ho Chi Minh City (90 minutes by air, into the depth)
From Bangkok (Suvarnabhumi or Don Mueang) to Ho Chi Minh City (Tan Son Nhat), budget carriers like VietJet and Thai AirAsia take about 1 hour 30 minutes. With several flights a day, the schedule bends to fit you. Ho Chi Minh City is the city of the great river, the alleys and the coffee — pho, banh mi, egg coffee with condensed milk, and the flood of motorbikes. The full picture of the city is in our Ho Chi Minh City guide. Use it as a base and add two day trips — the sampans and fireflies of the Mekong River cruise and the underground fortress of the Cu Chi tunnels — and Thailand’s bright variety gives way to Vietnam’s deep, concentrated hours.
Splitting the nights — “3-3” as the baseline, “4-4” for serious eating
The baseline is Bangkok 3, Ho Chi Minh City 3 — six nights. Each city gets two town days plus one day trip, enough to grasp the core. If eating is the headline act, stretch to four nights each and comb the markets and eateries exhaustively — a very Southeast Asian sort of luxury. Short on days? Cut the day trips and take two nights each: even four nights delivers the satisfaction of having set foot in two countries. There are two directions to extend: (1) Phuket’s beaches on the Thai side (adding a tropical resort), or (2) Hanoi or Da Nang on the Vietnamese side (the different faces of the north and center — we plan to cover them in future field trips). Both connect by domestic flights.
Booking and prep — the knack of a two-country Southeast Asia trip
- 1. Flights (open-jaw) — book into Bangkok and out of Ho Chi Minh City and the route runs in a straight line. The budget carriers between them charge separately for checked bags, so compare total prices
- 2. Entry rules — many nationalities can enter both countries visa-free for short tourist stays, but the conditions differ: Thailand requires the TDAC (digital arrival card, registered online before arrival), while Vietnam’s visa exemption runs up to 45 days for eligible passports. Always confirm the latest rules before you fly
- 3. Currency — Thai baht and Vietnamese dong are separate affairs. Both countries lean on cash in many settings, and street stalls and markets want small notes
- 4. Climate — dry season in southern Thailand is November–April, and southern Vietnam matches it. Late year through spring is the sweet spot for both (rainy-season squalls rarely wreck sightseeing, but fireflies and beaches favor the dry months)
- 5. Animals and experiences — we do not cover elephant riding, animal shows or other attractions with animal-welfare concerns. Save the street-stall hygiene gamble until your body has adjusted
Who this loop suits — and who it does not
Good fit: travelers whose trips revolve around eating; anyone who wants maximum intensity on modest prices; anyone who wants Southeast Asia’s “bright” and “deep” sides in one pass. Poor fit: those who prefer one city, slowly and deeply; anyone worn down by heat and noise; anyone whose only goal is resort downtime (in that case, Phuket on its own is the better trip). These are two intensely urban countries, so schedule one “do nothing” day in the middle and your stamina lasts to the end. It is also worth reading the single-country guides for Thailand and Vietnam first, to test which one pulls harder.
What fills up first, and the paperwork — the entry rules are different things in the two countries
The first thing to trip you up on this loop is not the hotels or the tours but the entry formalities. The requirements are completely different in the two countries, and both are the kind you clear before departure.
- Thailand requires advance registration of the digital arrival card (TDAC) from everyone. Registration is free and opens 72 hours before arrival; you show a QR code. The only official site is tdac.immigration.go.th; beware of imitation sites that charge (as of July 2026)
- For Vietnam, many nationalities are visa-free for up to 45 days (conditions include six months of passport validity and an onward ticket), but the rules depend on your passport, so confirm on the official evisa.gov.vn. Since April 2026 Tan Son Nhat airport has been trialling an online pre-arrival declaration, currently voluntary and free
- Whether you need cash also differs: at Bangkok’s three great temples, Wat Pho (300 B) and Wat Arun (200 B) take entry in cash only, and the cross-river ferry is 5 B a head. Stalls are cash too. Plenty of small notes keeps you moving
- Tours fill up in the dry season: a day trip to Phi Phi from Phuket can be full even a day ahead in the dry months. Securing it as soon as the dates are set is the safe move
Before the hotels and the flights, finish the TDAC registration and the check on your passport validity for Vietnam. Those two are free, and they are the only items that cannot be recovered on the day.
Getting between Thailand and Vietnam — why flying is effectively the only option
The answer to “how do I get from Thailand to Vietnam” is almost entirely by air. Overland exists, but the two countries do not share a border and you would have to pass through Cambodia or Laos. Without slack in the schedule it is not realistic.
- It takes about an hour and a half: from Bangkok (Suvarnabhumi or Don Mueang) to Ho Chi Minh City (Tan Son Nhat), on low-cost carriers such as VietJet or Thai AirAsia. There are several flights a day
- It is the Bangkok end that has two airports: Suvarnabhumi and Don Mueang are different airports, so ⚠always check which one your booking uses. The time from the city changes
- Overland adds countries to pass through: because Thailand and Vietnam do not touch, going by land means transiting Cambodia or Laos. If you are building it as a two-country trip, simply flying leaves more days for the experience
⚠The entry requirements are different things in the two countries. Thailand: register online free from 72 hours before arrival and show a QR code; Vietnam: many nationalities are visa-free for up to 45 days (six months of passport validity plus an onward ticket), though it depends on the passport. Assume that one trip still means two sets of formalities (as of July 2026).
Which one to enter first — the order changes the impression of the trip
Once the transport is settled, the next question is the order. The baseline is three nights in Bangkok and three in Ho Chi Minh City, a “3-3”, and we recommend acclimatising in varied Thailand first and then going into the denser Vietnam.
- Why Thailand first: Bangkok has temples, street food and shopping — a wide catchment that is easy to enter even on a first trip to Southeast Asia. Get used to it there and the torrent of motorbikes in Ho Chi Minh City reads as surprise rather than bewilderment
- For eating, make it “4-4”: both are food cities, so adding one night each changes the density of the trip
- A late-night flight home is usable: with a late departure from Ho Chi Minh City you get the whole of the last day (Vietnam: 9 Top Attractions)
Where to go from here
- 🇹🇭 Thailand Travel Guide (Bangkok, Phuket, Ayutthaya)
- 🇻🇳 Vietnam Travel Guide (Ho Chi Minh City, the Mekong, the Cu Chi tunnels)
- Choose your next trip by food → Food Travel Destinations
