LHR - DMK

£304 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 18/1. 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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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

mer, 12 nov - mer, 26 nov
Multiple Airlines Logo
21:30 - 23:50LHR-DMK
43h 20m2 stops
Multiple Airlines Logo
10:10 - 17:55DMK-LHR
38h 45m2 stops
£483Multiple Airlines
Find Deal
mer, 12 nov - mer, 26 nov
Multiple Airlines Logo
21:30 - 19:50LHR-DMK
39h 20m2 stops
Multiple Airlines Logo
06:45 - 17:55DMK-LHR
42h 10m2 stops
£485Multiple Airlines
Find Deal
mar, 6 gen - dom, 25 gen
Multiple Airlines Logo
21:05 - 04:25LHR-DMK
24h 20m2 stops
Multiple Airlines Logo
21:25 - 07:10DMK-LHR
40h 45m3 stops
£497Multiple Airlines
Find Deal
dom, 4 gen - lun, 26 gen
Multiple Airlines Logo
21:05 - 04:25LHR-DMK
24h 20m2 stops
Multiple Airlines Logo
09:15 - 07:10DMK-LHR
28h 55m2 stops
£502Multiple Airlines
Find Deal
mar, 11 nov - mer, 12 nov
Multiple Airlines Logo
08:45 - 18:15LHR-DMK
26h 30m2 stops
Multiple Airlines Logo
21:15 - 19:20DMK-LHR
29h 05m2 stops
£522Multiple Airlines
Find Deal
lun, 1 dic - mer, 10 dic
Multiple Airlines Logo
21:05 - 23:20LHR-DMK
19h 15m2 stops
Multiple Airlines Logo
20:40 - 19:20DMK-LHR
29h 40m2 stops
£524Multiple Airlines
Find Deal
lun, 10 nov - mer, 19 nov
Multiple Airlines Logo
08:45 - 23:20LHR-DMK
31h 35m2 stops
Multiple Airlines Logo
21:15 - 19:20DMK-LHR
29h 05m2 stops
£527Multiple Airlines
Find Deal
mar, 11 nov - lun, 17 nov
Multiple Airlines Logo
08:45 - 23:20LHR-DMK
31h 35m2 stops
Multiple Airlines Logo
15:05 - 06:35DMK-LHR
22h 30m2 stops
£534Multiple Airlines
Find Deal
mar, 11 nov - mer, 12 nov
Multiple Airlines Logo
08:45 - 18:50LHR-DMK
27h 05m2 stops
Multiple Airlines Logo
21:15 - 20:30DMK-LHR
30h 15m2 stops
£537Multiple Airlines
Find Deal
mar, 2 dic - mer, 17 dic
Multiple Airlines Logo
21:05 - 23:20LHR-DMK
19h 15m2 stops
Multiple Airlines Logo
17:25 - 06:35DMK-LHR
20h 10m2 stops
£538Multiple Airlines
Find Deal

Everything you should know

When to travel
November
Cheapest • 29% price drop
March
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest return fare
£483
Overall average: £609
Multiple Airlines
mer 12/11mer 26/11
LHR - DMK • 2 stops
Cheapest one-way flight
£306
Multiple Airlines
dom 18/1
LHR - DMK • 3 stops
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Don Mueang Intl!
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 £609 (return) on average. On the other hand, the most expensive months are July and December, where the average cost of round-trip tickets is £1,374 and £1,068 respectively.

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

Low seasonJuly
Cheapest flight£306
Best time to beat the crowds but there is an average 61% increase in price.
Most popular time to fly and prices are also 23% 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 £306 for a one-way ticket and £483 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?

    Star Alliance, and oneworld are the airline alliances operating flights between London Heathrow Airport and Bangkok Don Mueang Intl, with Star Alliance 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 £680 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 £900 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 361 reviews
8.3Crew
7.8Boarding
7.6Comfort
6.9Entertainment
7.3Food
Airline reviews

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.

6.0 GoodPeerapat, Oct 2025KIX - BKK
Read more Thai Airways reviews

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.

They used Thai Smile plane, which is a smaller model and used to service only domestic flights; hence, the plane is small and quite compact. No entertainment on the flight. While boarding was delayed, it was done in a quick manner.

I give EVA 5 stars in every category. I enjoy this airline and it's great team of employees. I always highly recommend EVA to friends and family and everyone.

The flight was delayed going out of the gate at BKK that made it a difficult challenge to get through immigration transfer at tapei and make it to my departure on time. This appears to be a recurring issue. The flight crew and cabin crew were excellent. The food was very nice.

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.

They downgraded me from premium economy to regular economy and me had 2 major lay over and had to have an emergency landing due to engine failure mid flight Don’t use them worst experience I have ever had still dealing with the trauma

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.

they are deley vancouver to hankong 3 hour after honkong 20 hour stay there honkong not visa approved and they cant help to visa so we are stay in airport 20 hour even honkong staf very bad person they cant do for us 6 hour we arround they said you there you go there waste time next time i dont want to go cathay stay in honkong

I was only given 2 meals, and my screen showed that there were 3 meals. Second meal was 1-2 hours late according to the screen.

Cabin crew is very helpful and nice, it is another level of service compared to Air Canada

Will never book any flight from Kayak and will never travel ithad airline

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

Same problem place in the middle so small Im 1,85 m so not good 👍

I am a larger than average person and in my opinion i don't think it's fair to allocate a window seat to anyone who is my size or larger, i was seated between 2 large passengers on a full aircraft. The guy in the window seat also occupied a portion of the middle seat (my seat) which made my experience of flying with etihad very cramped and uncomfortable, i was flying from Abu Dhabi to Bangkok. Had this been a airbus 380 it would have been better as the seats are larger but unfortunately it wasn't so i had to endure the 6+hrs unable to get any rest

Stewardess was attentive and was actively roamin to check the passengers on the biz class

Boarding was excellent except they did last call 30 minutes earlier .

It was worst flight ever of 26h. Poor service and seating. Flight from Abu Dhabi to Islamabad service and seating was worst ever. No tv extra.

It was OK as the seat which we paid for doesn’t have any window. We paid $120 for 3 seats but it’s for nothing. Crew could not help. None of the ports worked so all our phones went dry

Certainly! Here’s a more concise and refined version of your report, maintaining a polished and professional tone: --- Crew Check-In – Kolkata (CCU) The crew handling check-in in Kolkata was outstanding—efficient, courteous, and highly organized. Flight Segment – CCU to Abu Dhabi (AUH) A standard flight overall. Notably, only one in-flight meal option—a vegetarian curry—was available, which seemed unsuitable for a red-eye journey. The crew offered no alternatives, which was unexpected. Flight Segment – Abu Dhabi to Rome (AUH-FCO) Comfort improved on this leg, but service quality was average, falling short of Etihad’s premium standards. Crew attention was heavily absorbed by a difficult couple in Row 15 (port side), resulting in disproportionate focus. It was concerning that a steward had to personally return to apologize, a task better suited for supervisory staff. This highlights a development opportunity for supervisors Anna and Quashim in managing guest escalation professionally.

Flight was delayed due to slow boarding process by etihad. Update food options and movies as well.

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