LHR - DMK

£305 Find Cheap Flights from London Heathrow Airport to Bangkok Don Mueang Intl

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Heathrow to Don Mueang Intl departing on 16/3. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Bangkok Don Mueang Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Bangkok, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Bangkok, as well as popular online travel agencies
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Everything you should know

Cheapest return fare
£520
Overall average: £647
Multiple Airlines
Mon 9/3Mon 23/3
LHR - DMK • 2 stops
Cheapest one-way flight
£299
Multiple Airlines
Mon 16/3
LHR - DMK • 2 stops
When to travel
November
Cheapest • 33% price drop
March
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Don Mueang Intl!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Heathrow to Don Mueang Intl (LHR-DMK)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Heathrow to Don Mueang Intl that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Heathrow to Don Mueang Intl

Mon, 9 Mar - Mon, 23 Mar
Multiple Airlines Logo
08:45 - 13:00
LHR
-
DMK
21h 15m2 stops
Multiple Airlines Logo
17:25 - 11:30
DMK
-
LHR
25h 05m2 stops
£520Multiple Airlines
Tue, 3 Mar - Sun, 22 Mar
Multiple Airlines Logo
13:00 - 00:35
LHR
-
DMK
28h 35m2 stops
Multiple Airlines Logo
22:15 - 20:30
DMK
-
LHR
29h 15m2 stops
£536Multiple Airlines
Wed, 25 Mar - Mon, 6 Apr
Multiple Airlines Logo
08:40 - 13:10
LHR
-
DMK
21h 30m3 stops
Multiple Airlines Logo
00:30 - 18:20
DMK
-
LHR
23h 50m2 stops
£557Multiple Airlines
Tue, 3 Mar - Tue, 10 Mar
Multiple Airlines Logo
21:05 - 06:35
LHR
-
DMK
26h 30m2 stops
Multiple Airlines Logo
20:55 - 11:05
DMK
-
LHR
21h 10m1 stop
£560Multiple Airlines
Mon, 9 Mar - Mon, 23 Mar
Multiple Airlines Logo
08:45 - 13:00
LHR
-
DMK
21h 15m2 stops
Multiple Airlines Logo
17:25 - 11:30
DMK
-
LHR
25h 05m2 stops
£565Multiple Airlines
Mon, 23 Feb - Sun, 15 Mar
Multiple Airlines Logo
21:05 - 06:35
LHR
-
DMK
26h 30m2 stops
Multiple Airlines Logo
20:55 - 11:05
DMK
-
LHR
21h 10m1 stop
£567Multiple Airlines
Wed, 18 Feb - Mon, 9 Mar
Multiple Airlines Logo
21:05 - 06:35
LHR
-
DMK
26h 30m2 stops
Multiple Airlines Logo
20:55 - 11:05
DMK
-
LHR
21h 10m1 stop
£567Multiple Airlines
Mon, 2 Mar - Tue, 17 Mar
Multiple Airlines Logo
21:05 - 06:35
LHR
-
DMK
26h 30m2 stops
Multiple Airlines Logo
20:55 - 11:05
DMK
-
LHR
21h 10m1 stop
£568Multiple Airlines
Mon, 23 Feb - Wed, 11 Mar
Multiple Airlines Logo
21:05 - 06:35
LHR
-
DMK
26h 30m2 stops
Multiple Airlines Logo
20:55 - 11:05
DMK
-
LHR
21h 10m1 stop
£570Multiple Airlines
Sun, 18 Jan - Sat, 31 Jan
Multiple Airlines Logo
21:10 - 01:50
LHR
-
DMK
21h 40m1 stop
Multiple Airlines Logo
21:35 - 18:10
DMK
-
LHR
27h 35m2 stops
£571Multiple Airlines
Booking Insights

KAYAK's insights & trends for Heathrow to Don Mueang Intl flights

Get data-powered insights and trends into flights from Heathrow to Don Mueang Intl to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from London Heathrow Airport to Bangkok Don Mueang Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London Heathrow Airport to Bangkok Don Mueang Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from London Heathrow Airport to Bangkok Don Mueang Intl Airport is November, where tickets cost £538 (return) on average. On the other hand, the most expensive months are July and April, where the average cost of round-trip tickets is £1,353 and £1,006 respectively.

Good to know - Cheap tickets from London Heathrow Airport to Bangkok Don Mueang Intl

Low seasonJuly
Cheapest flight£299
Best time to beat the crowds but there is an average 69% increase in price.
Most popular time to fly and prices are also 19% lower on average.
Flight from London Heathrow Airport to Bangkok Don Mueang Intl

When to book flights from Heathrow to Don Mueang Intl

Are your dates flexible? Find out the best times to travel from Heathrow to Don Mueang Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking London Heathrow Airport to Bangkok Don Mueang Intl flights

  • What is the cheapest flight from London Heathrow Airport to Bangkok Don Mueang Intl Airport?

    In the last 3 days, the lowest price for a flight from London Heathrow Airport to Bangkok Don Mueang Intl Airport was £299 for a one-way ticket and £520 for a return.

  • Which aircraft models fly most regularly from London Heathrow Airport to Bangkok Don Mueang Intl?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from London Heathrow Airport to Bangkok Don Mueang Intl?

    oneworld, and Star Alliance are the airline alliances operating flights between London Heathrow Airport and Bangkok Don Mueang Intl, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from London to Bangkok, Thai Airways or Cathay Pacific?

    The two airlines most popular with KAYAK users for flights from London to Bangkok are Thai Airways and Cathay Pacific. With an average price for the route of £670 and an overall rating of 7.8, Thai Airways is the most popular choice. Cathay Pacific is also a great choice for the route, with an average price of £795 and an overall rating of 7.6.

  • How does KAYAK find such low prices on flights from London Heathrow Airport to Bangkok Don Mueang Intl?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London Heathrow Airport to Bangkok Don Mueang Intl.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London Heathrow Airport to Bangkok Don Mueang Intl?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Bangkok Don Mueang Intl from London Heathrow Airport is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from London Heathrow Airport to Bangkok Don Mueang Intl?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Bangkok Don Mueang Intl with an airline and back to London Heathrow Airport with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London Heathrow Airport to Bangkok Don Mueang Intl?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Bangkok Don Mueang Intl from London Heathrow Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines flying from Heathrow to Don Mueang Intl

 
See real verified KAYAK customer reviews for airlines flying from London to Bangkok. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Heathrow to Don Mueang Intl? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.8
Thai AirwaysOverall score based on 366 reviews
7.5Comfort
8.3Crew
7.9Boarding
7.3Food
6.9Entertainment
Airline reviews

Good experience although the boarding gate is at the terminal extension hence need to leave lounge to head over earlier.

8.0 ExcellentWee Keng, Dec 2025
BKK - SIN
Read more Thai Airways reviews

Good experience although the boarding gate is at the terminal extension hence need to leave lounge to head over earlier.

Thai Royal First is very good. Easy check in , Private room in the first class lounge and escort from ticketing to the plane. Once on board crew was very polite, food was outstanding, and the ride was smooth as silk. Restrooms were especially clean. Great Experience

I'm not interested in improving the airline. Therefore, I won't explain this in more detail. Next time I'll try a different one.

The flight (boarding) was delayed by 40-50 minutes and there was very crowed. They need to improve on the timeliness & boarding process. (They asked passenger to board in groups, but the 2nd group was standing there waiting for 20 minutes!). However, services from the crew was very good, also the food was good as well. I also found the legroom was quite comfortable.

Need to improve on punctuality. My flight was delayed by 1 hour.

Seats were uncomfortable and the vegetarian meal was awful. Some of the entertainment didn't work.

Except that our flight was cancelled, by mail, and later moved to 12 hours prior, then the experience was good. In Bangkok we were offered a hotel, it was fine, but would have been nice to know in advance😉

The flight was mostly fine, but I really wished that seats had an outlet to charge devices considering the length of the flight (15 hours there and 14 hours back).

Although booked meal of fruit only The crew had not received this special meal The same happened on my flight Bangkok / CAN The films are so old that best is to use own computer to watch downloads . Serve nuts but they do not warm up . Service is attentive , WC clean

Terrible. It’s like they are stuck in the dark ages. I brought a standard carry on suitcase and a back pack - I was told I could only carry on 7kg per bag - in business class, I was forced to remove articles from the suitcase and put them into my backpack! That’s the most ridiculous thing I’ve ever encountered in all my years of flying. The two bags weighed the same amount but one could not be more than 7kg. Holy cow.

one hour transit not good. cathay pacific is not helpful at all

Overall, not good. Super late boarding in Hong Kong because some last minute issue with a plane. The boarding process is chaotic. Kathy Pacific should seek to do better with punctual departure time. Caused a lot of trouble with missed connecting flight.

Crew on this flight dedicate their business class service to their high priority members. They would get priority service even the seats are behind me, and meals priority service and orders. I get the left over choices. I refused to eat because I felt discriminated, never booking this airline.

First time tying out business class with this airline, hat a disappointment, never returning. We didn’t get the meal as requested from Singapore to HKG flight. While meals served connecting flight, crew takes meal order based off passenger membership status by giving the. Priority selection of meals. It was a battle, plain disappointment, not worth the hype, price, class as categorized/ advertised

If my return flight was not so much better, I would have given an excellent review.

A lot of things Never flying with this airline again Had an emergency landing

Chicken pieces were too big with pasta. Need to be smaller.

My connecting flight was canceled or never existed. My stopover went from 1 hour and a half to 10 hours. It was a long day that I wasn't prepared for and it would have been nice to know that ahead of time. Cathay is great though. Great staff, entertainment and food.

The only problem was my connecting flight to Chiang Mai on Hong Kong express that I booked through Cathay Pacific was canceled and I was never told about it. I was rescheduled on a flight 10 hours later. Very long day at rgr airport in Hing Kong after a 13 hour flight but that's OK, I understand things change but I think I should have been told. I would have prepared myself for a long wait. Great flights all around though. Thank you

Overall pretty good experience. It would be nice to have caught the attendants even they were flying down the aisle with snacks, and if they could cater to multiple dietary restrictions (bland and no lactose. The customer service chat is a bad experience), but otherwise no complaints.

Seat space was tight and uncomfortable. There was hardly any cushioning giving me a terrible tail bone ache. Getting and out was extremely cramped. We paid for seat choices and felt totally ripped off. Food was mediocre. By the time the servers served 2 or 3 rows they ran out of this or that option as we saw on the inbound trip also. This is infuriating. Entertainment choices were extremely limited for such a long haul. The screen froze on occasion and did not switch off when the on off button was pressed. When it did it came back on its own in 5 seconds. The airlines has gone downhill since last year.

I paid 44 $ for seat upgrade (22D) and my seat was stack in high position for all the 6 hours of flight. I don't recommend the upgrade. I am looking to get my upgrade payment back

1 hour flight. No complaints. Some drinks would have been nice.

Crew was amazing as usual. Very comfortable for a 13hour flight. Check in at ATL was terrible. Ticket counter charged me $200 for a small bag. Apparently Kayak sold me a zero luggage ticket. No carry on no checked. So the check in desk charged me a bullshit $200 dollar fee for a small gym bag weighing less than 20lbs. In true 3rd party ticket buying. This will turn into a finger pointing process between Kayak and Etihad. Now I'm going to have to ship my bag back in the mail a day ahead of my return flight.

Poor boarding with incorrect gate numbers. Poor service they told me to throw away brand new water bottles. Poor immigration officers most likely American who hates Muslims. Poor service in the plane with no Urdu language sign posted anywhere. Horrible seats with no comfort at all they think people traveling in economy are animals. Slow food and water services. Slow baggage arrival.

My baggage was not boarded and is still missing. I was only carring one piece of luggage and that is misplaced now I am stuck at mumbai without luggage. I had an onward journey from here

We booked a business class ticket via Underpricer. Somehow they screwed up our ticket from Abu Dhabi to Ahmedabad. We will be hesitant to book again with them.

One of your male flight attendant was pushy and a bit of a martinette. Completely unnecessary.

Etihad charged me for 2 check in bags. On Kayak search results price was showing 2 check in bags were included. Kayak need to reimburse me for these additional charges and metal agony and distress. Thanks.

In Colombo when I-drop my baggage Sri Lanka air line crew not polite way talk very rude

Everything you need to know for your flight from Heathrow to Don Mueang Intl

Information on your arrival and departure airports