First trip to Thailand: what to know before you go

16 classic mistakes to avoid on a first trip to Thailand

Most first-trip problems come from the same handful of errors. Each one below is easy to avoid once you know it.

Thailand forgives a lot, but first-timers tend to repeat the same errors: an itinerary that is too ambitious, the wrong coast for the season and underestimated road risks. None of them will ruin a trip on its own, yet together they explain most of the stress, extra costs and lost days that travellers report. Read the list once before booking and once before you fly.

• Trying to see everything: one base every 3 to 4 nights is enough, as each move between regions costs half a day or more.
• Choosing islands without checking the season: the Andaman and Gulf coasts have their rain at different times, so pick the coast that is dry in your month.
• Skipping travel insurance: private hospitals are excellent but expensive, and a scooter accident or evacuation can run into thousands.
• Renting a scooter without a motorcycle licence: without the right licence on your International Driving Permit, insurance usually will not pay and police fines are common.
• Riding without a helmet: road accidents are the leading cause of serious injury among tourists.
• Taking a taxi that refuses the meter: insist on the meter or use Grab or Bolt instead.
• Falling for the closed temple or gem scam: a friendly stranger says the Grand Palace is closed and sends you to a shop; walk to the official entrance and check yourself.
• Wearing shorts and bare shoulders in temples: the Grand Palace and many temples refuse entry, so carry a light scarf and trousers or a long skirt.
• Criticising or joking about the monarchy: lese-majesty laws are strict and apply to foreigners.
• Touching someone's head or pointing your feet at people or Buddha images: both are considered rude.
• Planning a same-day island ferry and international flight: delays and cancellations are common, so leave a buffer night.
• Changing money at the airport only: rates are poorer there; change a small amount, then use city exchange booths or ATMs.
• Accepting dynamic currency conversion: always choose to pay or withdraw in baht, never in your home currency.
• Drinking tap water: stick to bottled or filtered water; ice in restaurants is generally made from purified water.
• Riding elephants or visiting tiger selfie attractions: choose genuine observation-only sanctuaries instead.
• Ignoring the heat: plan outdoor visits early, drink plenty and use sunscreen; the midday sun is intense year round.

Classic 2-week Thailand itinerary, day by day

This is the route most first-timers enjoy: culture in Bangkok, temples and mountains in the north, then a week of beaches. It works with one domestic flight north, one flight south and a boat, and it never asks you to change hotels every night. From November to April pick the Andaman coast as shown; from June to August swap Krabi for Koh Samui and Koh Phangan. For shorter or alternative routes, see our 2-week Thailand itinerary ideas.

3 weeks in Thailand: the classic route, day by day

Three weeks lets you add the ancient capitals, a slower rhythm in the north and a second island. The version below follows the Gulf route, which suits June to August and also works in the dry season; from November to April you can replace the Gulf week with Krabi, Koh Lanta and Koh Phi Phi. Durations are indicative and depend on connections. For more variations, see our 3-week Thailand itinerary ideas.

What to book in advance and what to book on the spot

Thailand is very flexible, and over-booking removes one of its pleasures. The rule of thumb: secure anything that sells out or anchors your route, then keep the rest open. In December, January, Chinese New Year and around Songkran in April, book islands and popular hotels well ahead, as good-value rooms go quickly.

Arriving in Bangkok step by step: airport, SIM and cash

Most long-haul flights land at Suvarnabhumi Airport (BKK), about 30 km east of the centre; budget airlines often use Don Mueang (DMK) in the north. Immigration can take from a few minutes to over an hour at peak times, so do not plan anything tight on your first afternoon. Once through, the order below keeps things simple.

1. 1Pass immigration with your passport, return or onward ticket and hotel address ready, plus any required arrival form.
2. 2Collect your bags and go through customs; declare goods only if needed.
3. 3Buy a tourist SIM at the operator booths in arrivals, or activate the eSIM you bought beforehand; staff set it up in minutes.
4. 4Withdraw a moderate amount of baht at a bank ATM, choosing no conversion, or change a small sum; better exchange rates are in the city.
5. 5Choose your transfer: the Airport Rail Link from Suvarnabhumi to Phaya Thai takes about 30 minutes and connects to the BTS Skytrain; a metered taxi from the official rank on level 1 usually takes 30 to 60 minutes plus tolls; Grab and Bolt pick up at marked points.
6. 6Check in, rest, then take an easy first evening near your hotel to beat the jet lag.

How much does a first trip to Thailand cost?

Thailand works on every budget, but the islands are clearly more expensive than Bangkok or the north. Excluding international flights, a backpacker can travel on a modest daily budget with guesthouses and street food, while a comfortable mid-range trip with good hotels, a few domestic flights and tours costs roughly two to three times more. The ranges below are indicative per person per day, based on two people sharing a room, and change with the season and exchange rate. For a full breakdown, read our Thailand travel budget guide or estimate your own trip with the travel budget calculator.

• Eat where locals eat: a street-food dish usually costs a fraction of a restaurant meal
• Fly domestic early rather than taking long overland trips when time is short
• Use Grab or Bolt in cities for fixed, transparent prices
• Keep a buffer for national park fees, which are higher for foreigners

Etiquette essentials: how to behave in Thailand

Thais are famously tolerant of visitors, but a few rules really matter. Showing respect for the royal family, Buddhism and people's personal space will earn you smiles everywhere. Losing your temper in public is seen as a loss of face, and calm politeness usually solves problems faster than raising your voice.

Essential apps for travelling in Thailand

A smartphone with a local data plan is your best travel tool in Thailand. Download these before you leave, create accounts and add a payment card at home, as some apps need an SMS verification that is easier with your usual number.

• Grab and Bolt: taxis and motorbike taxis at fixed prices, plus food delivery
• Google Maps: walking, public transport and opening hours; download offline maps
• Google Translate with the Thai offline pack and camera translation for menus
• 12Go or similar platforms: to compare and book buses, trains, ferries and minivans
• LINE: the messaging app used by Thai hotels, guides and businesses
• A weather app with radar to track showers during the rainy season
• Your bank's app, to block a card or check withdrawals instantly

Money, health and safety: the essentials

Thailand is generally safe for tourists, with most problems being scams, road accidents or tropical health issues rather than violent crime. Cards are widely accepted in hotels, malls and chains, but markets, street food and small guesthouses are cash-only. Thai ATMs charge foreign cards a fixed fee of 220 to 250 THB per withdrawal (sometimes more depending on the bank and card), so fewer, larger withdrawals are usually cheaper.

• Carry two cards from different networks and keep one in the hotel safe
• Check routine vaccinations and ask a travel doctor about hepatitis A and others
• Protect yourself against mosquitoes, especially at dawn and dusk
• Drink bottled or filtered water and eat at busy, high-turnover stalls
• Keep digital copies of your passport, insurance and bookings
• The tourist police hotline is 1155 and speaks English

Pre-departure checklist for your first trip to Thailand

Go through this list about two weeks before you fly. It covers the admin that is hard to fix once you are in Thailand and the small items that make the first days much smoother. To make sure nothing is missing from your bag, build a packing list tailored to your season and activities.

• Passport valid at least 6 months beyond arrival, with blank pages
• Entry rules and any arrival form checked on official sources
• Travel insurance covering medical costs, repatriation and scooters if you ride
• International Driving Permit with the motorcycle category if you plan to ride
• Bank told about your trip, two cards, PINs memorised
• eSIM bought or SIM plan chosen, apps installed and logged in
• First nights booked, plus peak-season islands
• Temple outfit: light trousers or long skirt and a scarf
• Mosquito repellent, sunscreen, basic medication and prescriptions
• Universal adapter (Thailand uses mainly type A, B and C sockets at 220 volts)
• Copies of documents in the cloud and on paper