A traditional Thai temple with ornate golden roofs and a flag.

£561 Cheap Flights from London (LHR) to Bangkok (DMK)

View £561 flight on Sun, 27 Sept 2026Opens in a new window

Popular airlines from Heathrow Airport (LHR) to Don Mueang Intl. Airport (DMK)

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 25% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from London (LHR) to Bangkok (DMK)

Prices were available within the past 7 days and start at £561 for one-way flights and £703 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Emirates
Mon, 21 Sept - Thu, 1 Oct
LHR
London
DMK
Bangkok
£703 Return, just found
£703
Return
just found
Select Emirates flight, departing Mon, 21 Sept from London to Bangkok, returning Thu, 1 Oct, priced at £703 just found
Emirates
Wed, 9 Jun - Wed, 23 Jun
LHR
London
DMK
Bangkok
£707 Return, found 2 hours ago
£707
Return
found 2 hours ago
Select Emirates flight, departing Wed, 9 Jun from London to Bangkok, returning Wed, 23 Jun, priced at £707 found 2 hours ago
Emirates
Wed, 30 Sept - Wed, 14 Oct
LHR
London
DMK
Bangkok
£721 Return, just found
£721
Return
just found
Select Emirates flight, departing Wed, 30 Sept from London to Bangkok, returning Wed, 14 Oct, priced at £721 just found
Emirates
Sun, 6 Sept - Mon, 21 Sept
LHR
London
DMK
Bangkok
£722 Return, just found
£722
Return
just found
Select Emirates flight, departing Sun, 6 Sept from London to Bangkok, returning Mon, 21 Sept, priced at £722 just found
Emirates
Mon, 31 Aug - Mon, 21 Sept
LHR
London
DMK
Bangkok
£723 Return, just found
£723
Return
just found
Select Emirates flight, departing Mon, 31 Aug from London to Bangkok, returning Mon, 21 Sept, priced at £723 just found
Emirates
Thu, 10 Sept - Tue, 13 Oct
LHR
London
DMK
Bangkok
£724 Return, found 8 hours ago
£724
Return
found 8 hours ago
Select Emirates flight, departing Thu, 10 Sept from London to Bangkok, returning Tue, 13 Oct, priced at £724 found 8 hours ago
Emirates
Tue, 29 Sept - Tue, 6 Oct
LHR
London
DMK
Bangkok
£725 Return, found 8 hours ago
£725
Return
found 8 hours ago
Select Emirates flight, departing Tue, 29 Sept from London to Bangkok, returning Tue, 6 Oct, priced at £725 found 8 hours ago
Emirates
Tue, 8 Sept - Tue, 29 Sept
LHR
London
DMK
Bangkok
£726 Return, found 1 day ago
£726
Return
found 1 day ago
Select Emirates flight, departing Tue, 8 Sept from London to Bangkok, returning Tue, 29 Sept, priced at £726 found 1 day ago
Emirates
Sat, 24 Apr - Mon, 3 May
LHR
London
DMK
Bangkok
£727 Return, found 1 day ago
£727
Return
found 1 day ago
Select Emirates flight, departing Sat, 24 Apr from London to Bangkok, returning Mon, 3 May, priced at £727 found 1 day ago
Emirates
Sun, 18 Apr - Wed, 5 May
LHR
London
DMK
Bangkok
£728 Return, found 2 days ago
£728
Return
found 2 days ago
Select Emirates flight, departing Sun, 18 Apr from London to Bangkok, returning Wed, 5 May, priced at £728 found 2 days ago

Alternative airports near Bangkok

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Suvarnabhumi Intl. BKK. Cheapest option available. Average driving time to city centre is 23 minutes. Flights from £697
BKK
Suvarnabhumi Intl.
Cheapest
Average driving time to city centre23 min
Flights from £697

Frequently asked questions

How much does a flight from London (LHR-Heathrow) to Bangkok (DMK-Don Mueang Intl.) cost?
You can find one-way and return flights from LHR to DMK with Expedia. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see our cheapest fares first, and use the Price Tracking tool to receive alerts when LHR to DMK ticket fares go up or down.
What is the cheapest month to fly from London (LHR-Heathrow) to Bangkok (DMK-Don Mueang Intl.)?
The cheapest months to fly from LHR to DMK are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from London (LHR-Heathrow) to Bangkok (DMK-Don Mueang Intl.)?
Enter LHR to DMK and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from London (LHR-Heathrow) to Bangkok (DMK-Don Mueang Intl.)?
To find a cheap flight from London (LHR-Heathrow) to Bangkok (DMK-Don Mueang Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from London (LHR-Heathrow) to Bangkok (DMK-Don Mueang Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from London (LHR-Heathrow) to Bangkok (DMK-Don Mueang Intl.)?
There are around 11 connecting flights per day from London Heathrow (LHR) to Bangkok Don Mueang Intl. (DMK). Some common connection points include Dubai Intl. (DXB), Abu Dhabi Intl. (AUH), and Dublin (DUB).
What is the earliest flight from London (LHR-Heathrow) to Bangkok (DMK-Don Mueang Intl.)?
Sort flights by "Departure (earliest)" on Expedia to find the earliest flight from LHR to DMK. To compare more early flights, use the "Early Morning" and "Morning" filters in your search.
How long does it take to fly from London (LHR-Heathrow) to Bangkok (DMK-Don Mueang Intl.)?
There are no nonstop flights from London (LHR-Heathrow) to Bangkok (DMK-Don Mueang Intl.). The journey covers a distance of approximately 9,547 kilometers. Flights with one stop typically take around 20 hours 18 minutes. If your journey involves two or more stops, you can expect the travel time to be a bit longer, usually around 21 hours 30 minutes. Keep in mind that actual flight times can vary due to factors like routing, weather, and wind patterns.
Can you fly business or first class from London (LHR-Heathrow) to Bangkok (DMK-Don Mueang Intl.)?
Select the "Business class" and "First class" filters when looking for LHR to DMK flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a London (LHR-Heathrow) to Bangkok (DMK-Don Mueang Intl.) flight with Expedia?
It's easy to earn miles on a London (LHR-Heathrow) to Bangkok (DMK-Don Mueang Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
Is it cheaper to buy a plane ticket from London (LHR-Heathrow) to Bangkok (DMK-Don Mueang Intl.) at the last minute?
Typically, booking a last minute flight from London (LHR-Heathrow) to Bangkok (DMK-Don Mueang Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a London (LHR-Heathrow) to Bangkok (DMK-Don Mueang Intl.) flight and hotel package?
Securing a London (LHR-Heathrow) to Bangkok (DMK-Don Mueang Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from London (LHR-Heathrow) to Bangkok (DMK-Don Mueang Intl.)?
If you booked your London (LHR-Heathrow) to Bangkok (DMK-Don Mueang Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Heathrow
Destination airport
Don Mueang Intl.
Airlines serving
Emirates
Return price
£703
Distance
9490 km

Book with confidence

Compare flights from London to Bangkok easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from London to Bangkok. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Don Mueang Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Heathrow to Don Mueang Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Heathrow (LHR) to Don Mueang Intl. (DMK)

The easiest way to view the best deals on flights from London to Bangkok today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Heathrow to Don Mueang Intl. start at just £703 and range up to £728.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near London and Bangkok
  • booking your flight during September, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your London to Bangkok flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Heathrow to Don Mueang Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from London to Bangkok easily and book with confidence

Explore a world of travel with Expedia

*Available to Expedia members.