Cheap flights from the UK to Bangkok

Flying from the UK to Bangkok: overview

Bangkok is the gateway to Thailand and one of the busiest hubs in South East Asia, and it is a perennial favourite with UK travellers – from backpackers to families and people visiting partners and relatives. Suvarnabhumi Airport (BKK) is the main international gateway, with flights from almost every major hub between the UK and Asia.

You can fly non-stop from London Heathrow. Thai Airways and EVA Air (continuing on to Taipei) have flown non-stop, and British Airways returned to Bangkok in 2024. Schedules change, so check which non-stop services are running when you search. Beyond that, there is a huge choice of one-stop options via the Gulf, Istanbul, Europe and Asia.

The Thai seasons shape demand. The cool, dry season from November to February is the most popular time to visit, with Christmas and New Year the busiest of all. Songkran, the Thai New Year in mid-April, is a major festival. The rainy season, roughly from June to October, sees fewer visitors, though UK summer holidays still drive demand.

This guide explains how to choose between non-stop and one-stop flights, which UK airports offer the best options, when to book, how Suvarnabhumi and Don Mueang work together, and how to use Bangkok as a base for exploring Thailand and the rest of South East Asia.

Quick facts: UK to Bangkok

Non-stop or one stop?

Non-stop flights from London Heathrow take around 11 to 12 hours. Thai Airways and EVA Air have both flown the route, and British Airways returned to Bangkok in 2024. Non-stops are the quickest option and remove the risk of a missed connection, but they are not always the cheapest, particularly in peak season.

One-stop flights give you far more choice. Emirates via Dubai, Qatar Airways via Doha, Etihad via Abu Dhabi and Turkish Airlines via Istanbul all fly from multiple UK airports. Finnair via Helsinki, Swiss via Zurich and Lufthansa via Frankfurt or Munich are other options. A well-timed connection adds only a few hours to the journey, and it can split the trip into two more manageable flights.

If you live outside London, a one-stop flight from your local airport is often more convenient than getting to Heathrow for a non-stop. Compare the total journey time from your front door, not just the flight time.

Popular stopover hubs for Bangkok

Which UK airport to fly from

Fares to Bangkok can vary a lot depending on where you start. The table below summarises the main options from around the UK. It is often worth comparing two or three airports within reach — including the cost of getting there.

Cheapest and busiest times to fly to Bangkok

Demand, and therefore price, rises and falls through the year. Use this as a guide to when fares tend to be highest and where the better-value windows usually are.

When to book flights to Bangkok

For Christmas and New Year, book early – several months ahead is sensible. This is peak season in Thailand as well as a UK holiday, so non-stop flights and the best-value one-stop fares fill up quickly.

For the cool season from November to February, a few months’ notice usually gives you a good choice. Compare non-stop and one-stop options, and check several UK airports if you can.

For the rainy season, you can often find reasonable fares closer to departure, although UK summer holidays still push prices up. If you are flexible, travelling in June, September or October can offer good value.

If you are planning to travel on to other destinations, consider booking a flight to Bangkok and a separate onward flight, or a multi-city ticket. Compare the price of both, and leave enough time between flights if they are on separate tickets.

Using Bangkok as a hub for the rest of Asia

Bangkok is one of the best-connected cities in South East Asia, and many travellers use it as a base for exploring the region. From Suvarnabhumi and Don Mueang, there are frequent flights to Vietnam, Cambodia, Laos, Malaysia, Singapore, Indonesia and beyond, as well as to Thailand’s islands and northern cities.

Low-cost airlines such as Thai AirAsia and Nok Air operate mainly from Don Mueang, while Thai Airways, Bangkok Airways and many international airlines use Suvarnabhumi. If you are booking an onward flight, check which airport it leaves from – it can make a big difference to your plans.

For island hopping, Bangkok Airways flies to Koh Samui, while Phuket, Krabi and other destinations are served by several airlines from both Bangkok airports. Domestic flights can be very good value, but they get busy around Songkran, Christmas and New Year.

• Check which Bangkok airport your onward flight uses before booking.
• Leave plenty of time between flights on separate tickets.
• Compare flying with overnight trains or buses for some domestic routes.

Suvarnabhumi vs Don Mueang

Suvarnabhumi (BKK) is Bangkok’s main international airport, east of the city centre. The Airport Rail Link connects it to central Bangkok, and taxis are available from the official taxi rank. Depending on traffic, a taxi to the centre can take 30 minutes to over an hour.

Don Mueang (DMK) is north of the city and is the main base for low-cost airlines. It is connected to central Bangkok by the SRT Red Line and by road. If you are transferring between Suvarnabhumi and Don Mueang, allow plenty of time – the journey by road can take an hour or more in traffic, and you will need to clear immigration and collect your bags first if you have arrived on an international flight.

If you are connecting between the two airports on separate tickets, a gap of several hours is sensible, or consider an overnight stay in Bangkok. Missing an onward flight because of a delayed arrival or traffic is a common problem.

Getting into Bangkok from Suvarnabhumi

The Airport Rail Link is the quickest way to reach central Bangkok in heavy traffic, running from the airport to Phaya Thai, where you can change to the BTS Skytrain. It is a good option if you are travelling light.

Taxis are available from the official taxi rank on the arrivals level. Make sure the driver uses the meter, and expect to pay a small airport surcharge and any expressway tolls. Ride-hailing apps such as Grab also operate in Bangkok.

If you arrive late at night or with a lot of luggage, a pre-booked transfer can be less stressful. Many hotels also offer airport pick-ups.

Baggage on flights to Bangkok

On flights to Bangkok, baggage allowances depend on the airline and fare type. Full-service airlines often include checked baggage in economy, but the cheapest fares may include less or none. Check the allowance for your specific fare before you book.

Some airlines use a weight concept (a total weight across your bags) and others a piece concept (a set number of bags, each with a weight limit). Know which applies to avoid excess fees.

If you are taking onward flights with low-cost airlines, their baggage allowances may be much smaller than on your international flight. Buy extra baggage online in advance, as it is usually much cheaper than paying at the airport.

If your onward flight is on a separate ticket, you will usually need to collect your bags and check them in again. Allow plenty of time, particularly if you are transferring between Suvarnabhumi and Don Mueang.

Visas and entry requirements

Entry rules can change at short notice and depend on your nationality and passport. Before you book, check the official GOV.UK foreign travel advice for Thailand for the latest entry requirements, passport validity rules and safety advice. If your journey connects through another country, check whether you need a transit visa for the stopover too.