Cheap flights from London Heathrow Airport to Bangkok from £244

LHR — BKK
25 Sep — 2 Oct1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London Heathrow to Bangkok are usually found in May or September, booked 85 days in advance, depart on a Monday or Tuesday and return on a Sunday

Cheap flight deals from Heathrow to Bangkok

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Bangkok

Fri 6/1121:10 -
1 stop21h 10m
Thu 26/1102:20 -
1 stop23h 50m
Deal found 26/8£429
Thu 24/922:00 -
1 stop37h 05m
Tue 13/1001:30 -
1 stop22h 10m
Deal found 26/8£430
Sat 5/922:00 -
1 stop37h 05m
Mon 14/919:35 -
1 stop30h 50m
Deal found 25/8£431
Thu 5/1122:00 -
1 stop20h 05m
Sat 21/1111:25 -
1 stop38h 10m
Deal found 26/8£432
Mon 12/1022:10 -
1 stop21h 20m
Mon 26/1016:20 -
1 stop33h 15m
Deal found 26/8£433
Thu 1/1022:00 -
1 stop22h 15m
Wed 14/1003:15 -
1 stop22h 35m
Deal found 25/8£434
Fri 13/1121:00 -
1 stop18h 25m
Mon 23/1116:50 -
1 stop31h 40m
Deal found 26/8£435
Tue 20/1020:25 -
1 stop35h 10m
Wed 4/1101:30 -
1 stop21h 25m
Deal found 22/8£435
Thu 1/1021:20 -
1 stop21h 20m
Wed 28/1005:05 -
1 stop19h 25m
Deal found 25/8£436
Mon 2/1117:40 -
1 stop37h 00m
Mon 23/1113:50 -
1 stop36h 50m
Deal found 25/8£437
Sun 30/822:10 -
1 stop31h 30m
Sun 6/919:00 -
1 stop30h 20m
Deal found 23/8£438
Tue 10/1117:40 -
2 stops23h 55m
Tue 24/1119:55 -
2 stops28h 55m
Deal found 24/8£480

Find flight deals from Heathrow to Bangkok

Round-trip from

£429

One-way from

£244

Popular in

December

Cheapest in

May

Average price

£791
Shenzhen Airlines
  • Shenzhen Airlines
  • 20/11-26/11
  • 2 total stops
  • 45h 00m total
  • London to Bangkok
7/9
  • 7/9
  • 2 total stops
  • 33h 40m total
  • London to Bangkok
Highest demand for flights based on searches. 6% potential increase in price (£34 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (£15 potential savings vs. average return price).
Average for round-trip flights in August 2026

Cheapflights Fare Finder

 
Use the filters below to find and compare flights from London Heathrow Airport to Bangkok that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonBangkok

LHR London Heathrow - BKK Bangkok Suvarnabhumi

LHRBKK

London Heathrow

Sun 25/10

21:10-01:20

1 stop21h 10m

Bangkok Suvarnabhumi

Tue 10/11

02:20-19:10

1 stop23h 50m

£467

LondonBangkok

LHR London Heathrow - BKK Bangkok Suvarnabhumi

LHRBKK

London Heathrow

Fri 11/9

08:40-09:15

2 stops18h 35m

Bangkok Suvarnabhumi

Wed 30/9

12:05-07:55

2 stops25h 50m

£637

LondonBangkok

LHR London Heathrow - BKK Bangkok Suvarnabhumi

LHRBKK

London Heathrow

Fri 11/9

08:40-09:15

2 stops18h 35m

Bangkok Suvarnabhumi

Wed 30/9

11:25-09:00

2 stops27h 35m

£638

LondonBangkok

LHR London Heathrow - BKK Bangkok Suvarnabhumi

LHRBKK

London Heathrow

Tue 12/1

21:05-10:35

2 stops30h 30m

Bangkok Suvarnabhumi

Thu 28/1

12:35-09:20

1 stop27h 45m

£684

LondonBangkok

LHR London Heathrow - DMK Bangkok Don Mueang Intl

LHRDMK

London Heathrow

Wed 20/1

22:00-20:10

1 stop15h 10m

Bangkok Don Mueang Intl

Wed 3/3

23:00-13:50

1 stop21h 50m

£723

LondonBangkok

LHR London Heathrow - DMK Bangkok Don Mueang Intl

LHRDMK

London Heathrow

Thu 21/1

22:00-20:10

1 stop15h 10m

Bangkok Don Mueang Intl

Wed 3/2

08:55-20:00

1 stop18h 05m

£724

LondonBangkok

LHR London Heathrow - DMK Bangkok Don Mueang Intl

LHRDMK

London Heathrow

Tue 3/11

22:00-20:10

1 stop15h 10m

Bangkok Don Mueang Intl

Tue 24/11

23:00-11:40

1 stop19h 40m

£725

LondonBangkok

LHR London Heathrow - DMK Bangkok Don Mueang Intl

LHRDMK

London Heathrow

Thu 5/11

19:00-20:10

1 stop18h 10m

Bangkok Don Mueang Intl

Wed 11/11

23:00-11:40

1 stop19h 40m

£725

LondonBangkok

LHR London Heathrow - BKK Bangkok Suvarnabhumi

LHRBKK

London Heathrow

Thu 11/2

10:20-10:35

1 stop17h 15m

Bangkok Suvarnabhumi

Sun 21/2

12:35-14:35

2 stops33h 00m

£739

LondonBangkok

LHR London Heathrow - BKK Bangkok Suvarnabhumi

LHRBKK

London Heathrow

Sun 17/1

19:50-10:35

2 stops31h 45m

Bangkok Suvarnabhumi

Sun 21/2

12:35-09:20

1 stop27h 45m

£742

Flights are sorted by cheapest return flights first.

Deals found on 21/8

Showing 1-10 of 43 resultsSorted by cheapest first
1
2
3
...
5

Best time to book a flight from Heathrow to Bangkok

Have a flexible travel schedule? Discover the best time to fly to Bangkok from Heathrow with our price prediction graph.
Estimated return price

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Bangkok

What is the cheapest month to book a flight from London Heathrow Airport to Bangkok?

Currently, May is the cheapest month in which you can book a flight from London Heathrow Airport to Bangkok (average of £582). Flying from London Heathrow Airport to Bangkok in December is currently the most expensive (average of £914). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from LHR to BKK?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London Heathrow Airport to Bangkok as you normally would.

Weekly flight availability from London Heathrow Airport to Bangkok

The most flights from LHR to TH1 are scheduled on a Monday (9 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (9 on average).

How much does it cost for a return flight from London Heathrow Airport to Bangkok?

Airfare is below average for this route at the moment.
London Heathrow Airport to Bangkok flights typically cost between £594 and £807 in November.
The cheapest return price found within the last 5 days was £429 on Shenzhen Airlines (20 Nov–26 Nov).

How often are flights from London to Bangkok delayed?

About 11% of weekly flights between London and Bangkok have experienced delays in the past year, with the average delay time being 88 minutes.

What is the most punctual flight time for London to Bangkok flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Tuesday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on London to Bangkok flights?

Over the past year, EVA Air have had the lowest number of delays on this route, with just 5% of flights being delayed.

How far ahead should I book a flight from London Heathrow Airport to Bangkok?

The price you pay for your flight from London Heathrow Airport to Bangkok may vary depending on when you book. For the best chance of a lower fare, look to book 84 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Reviews of airlines servicing Bangkok

Read through reviews of airlines operating flights from London Heathrow Airport to Bangkok, such as EVA Air,Oman Air, andThai Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Comfort

8.3

Food

8.1

Boarding

8.5

Crew

8.7

Entertainment

8.0

Overall

8.5

Reviews

1 / 20
8.0
Excellent

Jack,Feb 2026

TPE - SFO

Premium Economy for a.long-haul flight was worth it for the extra room. It is a 2-5-2 layout, so unless you have a family, get a seat in the 2-seat section. Nice slippers and goody bag. Food was tasty, although it seemed a bit repetitive (i.e., each meal used the same ingredients slightly re-configured). Staff were excellent.

Comfort

8.3

Food

8.1

Boarding

8.5

Crew

8.7

Entertainment

8.0

Overall

8.5

Reviews

1 / 20
8.0
Excellent

Jack,Feb 2026

TPE - SFO

Premium Economy for a.long-haul flight was worth it for the extra room. It is a 2-5-2 layout, so unless you have a family, get a seat in the 2-seat section. Nice slippers and goody bag. Food was tasty, although it seemed a bit repetitive (i.e., each meal used the same ingredients slightly re-configured). Staff were excellent.

Comfort

8.3

Food

8.1

Boarding

8.5

Crew

8.7

Entertainment

8.0

Overall

8.5

Reviews

1 / 20
8.0
Excellent

Jack,Feb 2026

TPE - SFO

Premium Economy for a.long-haul flight was worth it for the extra room. It is a 2-5-2 layout, so unless you have a family, get a seat in the 2-seat section. Nice slippers and goody bag. Food was tasty, although it seemed a bit repetitive (i.e., each meal used the same ingredients slightly re-configured). Staff were excellent.

Comfort

8.3

Food

8.1

Boarding

8.5

Crew

8.7

Entertainment

8.0

Overall

8.5

Reviews

1 / 20
8.0
Excellent

Jack,Feb 2026

TPE - SFO

Premium Economy for a.long-haul flight was worth it for the extra room. It is a 2-5-2 layout, so unless you have a family, get a seat in the 2-seat section. Nice slippers and goody bag. Food was tasty, although it seemed a bit repetitive (i.e., each meal used the same ingredients slightly re-configured). Staff were excellent.

Comfort

8.3

Food

8.1

Boarding

8.5

Crew

8.7

Entertainment

8.0

Overall

8.5

Reviews

1 / 20
8.0
Excellent

Jack,Feb 2026

TPE - SFO

Premium Economy for a.long-haul flight was worth it for the extra room. It is a 2-5-2 layout, so unless you have a family, get a seat in the 2-seat section. Nice slippers and goody bag. Food was tasty, although it seemed a bit repetitive (i.e., each meal used the same ingredients slightly re-configured). Staff were excellent.

Comfort

8.3

Food

8.1

Boarding

8.5

Crew

8.7

Entertainment

8.0

Overall

8.5

Reviews

1 / 20
8.0
Excellent

Jack,Feb 2026

TPE - SFO

Premium Economy for a.long-haul flight was worth it for the extra room. It is a 2-5-2 layout, so unless you have a family, get a seat in the 2-seat section. Nice slippers and goody bag. Food was tasty, although it seemed a bit repetitive (i.e., each meal used the same ingredients slightly re-configured). Staff were excellent.

Related info for your journey

  • How long is the flight from London Heathrow Airport to Bangkok?

    For as low as £638, Shenzhen Airlines can have you in Bangkok from London Heathrow Airport in 18h 35m. Airlines will cover a distance of 5947 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the cheapest airlines flying from London Heathrow Airport to Bangkok round-trip?

    Flying on Scandinavian Airlines is currently your cheapest option to Bangkok, with prices starting at £279. Additional return tickets that might be worth considering are offered by Norse Atlantic UK and Vietnam Airlines, with the lowest prices starting at £285 and £318, respectively. Users have found that Scandinavian Airlines is 59% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from London Heathrow Airport to Bangkok one-way?

    One-way options have recently been found by users for as low as £240 on Shenzhen Airlines. Other airlines that offer cheap prices include Singapore Airlines from £242 and Hainan Airlines from £251 one-way.

  • What are the most reliable airlines from London Heathrow Airport to Bangkok?

    Before booking your flight to Bangkok from London Heathrow Airport, check out the most reliable airlines to get you to your destination on time: EVA Air (85%), Thai Airways (85%), Air Canada( 80%).

  • What are the cheapest flights from London Heathrow Airport to Bangkok?

    On average you can expect to pay £1,624 for a flight from London Heathrow Airport to Bangkok. The cheapest flight overall is £480 while the most popular route, (London Heathrow - Bangkok Suvarnabhumi) is currently priced at £413.

  • Where are the most common stopover locations when flying from London Heathrow Airport to Bangkok?

  • What are some popular things to do or see while on a stopover in Abu Dhabi?

    Emirates Palace Mandarin Oriental, Yas Waterworld, and Ferrari World Abu Dhabi are currently the most popular points of interest in Abu Dhabi at the moment. Emirates Palace Mandarin Oriental, Yas Waterworld, and Ferrari World Abu Dhabi can be accessed by travelling approximately 21.1 mi, 5.0 mi, and 4.5 mi, respectively from Abu Dhabi Zayed Intl. Travellers in need of a car in Abu Dhabi can hire one for about £17 per day.

  • Where are the least popular stopover locations for London Heathrow Airport to Bangkok flights?

  • Can I find deals for flights from Heathrow to Bangkok that include hotel bookings?

    Yes. In addition to deals on Heathrow to Bangkok flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Bangkok?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Bangkok.

  • Can I find deals for business class flights from Heathrow to Bangkok?

    Yes. Cheapflights offers flight deals from Heathrow to Bangkok by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from London Heathrow Airport to Bangkok?

    Currently, May is the cheapest month in which you can book a flight from London Heathrow Airport to Bangkok (average of £582). Flying from London Heathrow Airport to Bangkok in December is currently the most expensive (average of £914). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

  • What are the most eco-friendly airlines from Heathrow to Bangkok?

    There are a couple of options for flights from Heathrow to Bangkok for sustainable travel. Some great options to travel with are KLM, Finnair, Etihad, and Qatar Airways. If you fly with KLM, you will be flying with one of the most eco-friendly airlines in the world. KLM has a carbon emission reduction programme that has been helping the environment by reducing fuel, replacing fossil fuels, and offsetting Carbon Dioxide Emissions. Finnair is another great choice for eco-friendly travel. This airline has been making aircraft that are more fuel-efficient and use more bio-fuel in their planes. Qatar Airways allow passengers to contribute to the Carbon Offset Programme they have created. If you fly with Etihad, you will be flying with an airline that is in the process of making environmentally-friendly fuel so that they have zero carbon emissions by the year 2050.

  • How to fly more sustainably from Heathrow to Bangkok?

    There are many ways you can travel more sustainably when you fly. One of the best ways is to travel in Economy Class. The seats in this class take up less space, creating more room for more seats. The fewer trips a plane has to make, the better it is for the environment. Taking a direct flight or a flight with only one stopover is another great option, as it saves a ton of fuel. Packing a light bag makes the plane lighter. So if you have the option, don’t overpack to save fuel. Flying with an environmental airline is always recommended. So fly with KLM, Finnair, Etihad or Qatar Airways.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Top 10 airlines flying from Heathrow to Bangkok

AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest£279Average£630FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
Norse Atlantic UKCheapest£285Average£578FlexibilityNo cancel feeOn-timeN/A
Search Norse Atlantic UK flights
Vietnam AirlinesCheapest£318Average£641FlexibilityNo cancel feeOn-time81%
Search Vietnam Airlines flights
Hainan AirlinesCheapest£363Average£416FlexibilityNo cancel feeOn-time61%
Search Hainan Airlines flights
Turkish AirlinesCheapest£370Average£689FlexibilityNo cancel feeOn-time77%
Search Turkish Airlines flights
Royal JordanianCheapest£402Average£673FlexibilityNo cancel feeOn-time61%
Search Royal Jordanian flights
CondorCheapest£443Average£608FlexibilityNo cancel feeOn-time76%
Search Condor flights
LufthansaCheapest£453Average£659FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Kuwait AirwaysCheapest£461Average£564FlexibilityNo cancel feeOn-time64%
Search Kuwait Airways flights
ITA AirwaysCheapest£466Average£539FlexibilityNo cancel feeOn-time81%
Search ITA Airways flights

Fly with Cheapflights

How does Cheapflights help users find flights from Heathrow to Bangkok?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Heathrow to Bangkok. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Bangkok?

Cheapflights helps you find that perfect flight to Bangkok from Heathrow by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Heathrow to Bangkok with no change fees?

Need flexible booking options for your flight to Bangkok from Heathrow? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Heathrow to Bangkok become cheaper?

Yes, Cheapflights offers price alerts on Heathrow to Bangkok flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.