Thailand is easy to cross because every transport mode is available and competes on price. The trade-off is time: the country is about 1,600 km from the northern border to the southern tip, and a map can make distances look shorter than they are. This guide explains the realistic options for each type of journey, what to expect from each, and where the common pitfalls are. Timetables, fares and routes change, so confirm on the operator's own page. Figures are approximate, as of 2026.
Choosing a mode for a long journey
| Route | Fastest | Cheapest or most scenic | Notes |
|---|---|---|---|
| Bangkok to Chiang Mai | Flight, about 1 h 15 min | Overnight sleeper train (about 11-14 h) or bus | Night train saves a hotel night |
| Bangkok to Phuket | Flight, about 1 h 25 min | Bus (about 12-14 h) | Phuket also has a ferry-free road link |
| Bangkok to Krabi | Flight, about 1 h 25 min | Train to Surat Thani then bus, or overnight bus | Train plus onward bus is common |
| Bangkok to Koh Samui | Flight, about 1 h 10 min | Train or bus to Surat Thani plus ferry | Combined tickets are widely sold |
| Bangkok to Ayutthaya | Train or minibus, about 1.5-2 h | Third-class train, very low fare | Easy day trip |
| Chiang Mai to Chiang Rai | Bus, about 3-4 h | Bus | Frequent services |
| Phuket to Koh Phi Phi | Ferry, about 1.5-2 h | Ferry | Conditions can cancel boats |
When comparing, compute the full door-to-door time. A short flight plus airport transfers and early check-in can take as long as a good sleeper train.
Domestic flights
Several carriers fly the main routes between Bangkok (Suvarnabhumi BKK and Don Mueang DMK), Chiang Mai, Phuket, Krabi, Koh Samui, Hat Yai, Chiang Rai and Udon Thani, among others. Flights are frequent and fares vary widely with date: book early or travel midweek for lower prices (roughly THB 800-3,500 one way, approx., as of 2026). Points to remember:
- Check the airport. Many budget flights use Don Mueang, which is a different side of Bangkok from Suvarnabhumi. Leave a long buffer when connecting from an international flight into a domestic one on a separate ticket.
- Baggage. Low-cost carriers often charge for checked bags and enforce cabin limits strictly.
- Koh Samui and Koh Tao connections. Samui's airport is small and prices to it are often higher than to nearby mainland airports; many travellers compare with flying to Surat Thani and taking a ferry.
See Bangkok airport to city for getting out of the capital's airports.
Trains
The State Railway of Thailand (SRT) runs the national network. Check the official site railway.co.th for timetables, classes and fares, and use only official booking channels or clearly licensed agents.
- Main lines: north to Chiang Mai, south to Surat Thani, Hat Yai and beyond, northeast to Nong Khai and Ubon Ratchathani, and east to the Cambodian border.
- Classes: sleeper berths in first and second class on long routes, seat-only second and third class otherwise. Air-conditioned sleepers are popular with visitors; upper berths are usually cheaper than lower berths.
- Speed: trains are scenic and relaxed, but often slower than buses and sometimes delayed. Do not schedule tight connections.
- Booking: popular sleeper departures can sell out, especially in the cool season and around holidays, so book ahead.
- Other rail: Bangkok's BTS Skytrain, MRT subway and Airport Rail Link are separate systems for the city, covered in the Bangkok guides. High-speed rail construction is under way but should not be relied on for a trip until services are announced on official pages.
Sleeper trains typically run strong air-conditioning, so carry a light layer. Keep valuables with you and a lock on your bag.
Buses and minibuses
Government-run services from Bangkok's bus terminals reach almost everywhere. Tiers include ordinary, first-class and VIP coaches with reclining seats. Private companies also run services, and tourist minibuses and combined bus-and-ferry tickets are widely sold. Practical advice:
- Look for departures from official terminals, not from roadside agents who promise you a "VIP" service.
- Consider the road safety record when choosing night buses; take daytime services where you can.
- Keep valuables on you, not in the overhead bin or luggage hold.
- Some routes, such as Chiang Mai to Pai, are on mountain roads with hundreds of curves. If you are prone to motion sickness, bring medication. See Chiang Mai to Pai.
Ferries and boats
Island access is by ferry, speedboat or longtail boat. Operators and timetables vary by season, and monsoon conditions can cancel sailings. Typical patterns:
- Andaman: ferries link Phuket, Krabi, Phi Phi, Lanta and Lipe. See how to get to Koh Phi Phi and how to get to Koh Lipe.
- Gulf: ferries from Surat Thani, Chumphon and Don Sak serve Samui, Phangan and Tao. See the Samui, Phangan and Tao ferry guide.
- Tips: book direct or through a transparent agent, arrive at the pier early, and allow a buffer before flights. Life jackets are available on board, and you should use one in rough weather.
Taxis, ride-hailing and local transport
- Metered taxis (Bangkok): insist on the meter. Drivers who refuse often quote a higher flat fare.
- Grab and Bolt: both operate in Bangkok and many tourist cities. Prices are shown in the app before you ride, which avoids haggling. On some islands, local taxi associations restrict ride-hailing, so you may be directed to a nearby meeting point.
- Tuk-tuks: fun for short trips, but always agree on the fare first. Drivers who offer a very cheap "sightseeing tour" are often steering you to shops for commission.
- Songthaews: shared pickup trucks that follow fixed or semi-fixed routes in many towns. Agree on the price if it is a charter ride.
- Motorbike taxis: quick for short distances in traffic; wear the helmet offered.
- Car rental with a driver: sensible for day trips and groups; confirm what is included.
Motorbikes and rental cars
Renting a scooter is common on islands and in the north, and also one of the most dangerous things visitors do. Thailand has a high road-traffic fatality rate. If you decide to ride, treat these as minimums:
- Licence. Carry a valid motorcycle licence from your country plus an International Driving Permit that covers motorcycles. Riding without the correct licence is illegal and, importantly, can invalidate your travel insurance.
- Insurance. Read your policy for exclusions on motorcycles, engine size and licence requirements. A hospital bill after a crash can be very large.
- Helmet. Wearing a helmet is legal law; police checkpoints are common and fines are routine.
- Rental shop. Photograph the bike before leaving; do not leave your passport as a deposit. Check brakes, tyres and lights.
- Conditions. Avoid riding in heavy rain, at night, or when you are tired or have been drinking. Drink-driving carries severe penalties.
- Experience. Island hills, wet roads and sand are not the place to learn to ride.
Many insurers exclude accidents where the rider lacks the right licence, and hospitals may ask for a deposit. If you are not an experienced rider with a valid licence, use taxis, ride-hailing or a driver instead. Check licence rules with the Department of Land Transport.
Car rental is available at airports and in cities. Traffic drives on the left, and city driving can be demanding. An International Driving Permit is expected alongside your national licence.
Within cities
- Bangkok: the BTS Skytrain, MRT subway and Chao Phraya river boats are fast ways to avoid road traffic. Rush hours are heavy. See Bangkok 3-day plan.
- Chiang Mai: red songthaews, Grab and walking within the old city. See the Chiang Mai 3-day plan.
- Islands: a mix of songthaews, motorbike taxis, rental scooters and longtail boats.
Practical tips
- Book sleeper trains and high-season ferries in advance; leave walk-up for off-peak travel.
- Carry small notes: many drivers cannot change large bills.
- Use offline maps and the Grab or Bolt apps; a SIM or eSIM helps.
- Keep a copy of your passport and bus or ferry tickets on your phone.
- Plan long journeys on separate days from your flights home.
For regional routing see the Thailand hub and the 2-week itinerary.
FAQ
What is the cheapest way to travel between Thai cities?
Buses and third-class or second-class trains are usually the cheapest. Budget airlines can match them on some routes if booked early. Compare current prices for your dates.
Are sleeper trains in Thailand worth it?
They combine transport and a night's accommodation, with a comfortable berth and scenery in daylight. They are slower than flying and can run late, so they suit flexible schedules.
Is Grab available everywhere in Thailand?
It covers Bangkok and many major cities, but coverage and rules on islands vary, and some places restrict ride-hailing. Have a backup, such as a local taxi or your hotel's transfer.
Can I rent a motorbike with my home country driving licence?
You generally need a licence valid for motorcycles and an International Driving Permit. Check requirements with the Department of Land Transport and your insurer, since unlicensed riding can void your insurance.
Do ferries run in the rainy season?
Many do, but services are reduced and sailings can be cancelled in rough weather, especially on the Andaman coast from about May to October. Check with the operator the day before and avoid tight connections.
Is it safe to take night buses?
Many travellers do, but road accidents are a risk. Choose reputable operators, prefer daytime travel when possible, wear a seatbelt if provided and keep valuables close.
Official sources and further reading
Prices, schedules and entry rules change. Figures here are approximate as of 2026; always confirm on the official or operator page before you book. Spotted something out of date? Tell us.
