How long is the flight from Bangkok Don Mueang Intl Airport to London Heathrow Airport?

For as low as £711, Emirates can have you in London Heathrow Airport from Bangkok Don Mueang Intl Airport in 19h 40m. Bangkok Don Mueang Intl Airport and London Heathrow Airport are separated by a distance of 5929 mi.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

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

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

Can I find deals for flights from Don Mueang Intl to Heathrow that include hotel bookings?

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

How can I find direct flights from Don Mueang Intl to Heathrow?

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

Can I find deals for business class flights from Don Mueang Intl to Heathrow?

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

£249+ Cheap Flights from Bangkok Don Mueang Intl Airport to London Heathrow Airport

Cheap flight deals from Don Mueang Intl to Heathrow

Enter your travel dates to find the best prices.

Cheapest

Best

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One-way

Cheapest flights from Don Mueang Intl to Heathrow
Explore the most affordable flight options available from Don Mueang Intl to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 August 2026.

Thu 8/1018:25 -

2 stops31h 35m

Fri 23/1012:35 -

2 stops28h 05m

Deal found 17/8£619

Thu 29/1018:30 -

2 stops28h 25m

Thu 12/1121:35 -

1 stop17h 55m

Deal found 21/8£630

Sat 24/1019:25 -

2 stops25h 35m

Sat 31/1021:35 -

1 stop17h 55m

Deal found 18/8£635

Sun 20/922:45 -

2 stops25h 00m

Sat 3/1022:10 -

1 stop21h 45m

Deal found 17/8£655

Tue 15/906:30 -

2 stops18h 15m

Sun 20/921:45 -

2 stops18h 20m

Deal found 16/8£687

Mon 23/1123:00 -

1 stop28h 00m

Mon 7/1209:10 -

1 stop15h 45m

Deal found 21/8£695

Mon 14/922:45 -

2 stops25h 25m

Sun 27/922:10 -

1 stop24h 30m

Deal found 20/8£696

Tue 29/923:50 -

1 stop18h 35m

Tue 13/1020:40 -

1 stop18h 05m

Deal found 20/8£703

Fri 25/921:50 -

2 stops20h 55m

Sun 27/914:45 -

2 stops19h 05m

Deal found 20/8£704

Tue 17/1121:35 -

2 stops21h 30m

Sat 21/1121:35 -

1 stop17h 55m

Deal found 19/8£710

Wed 11/1123:00 -

1 stop19h 40m

Sun 15/1122:00 -

1 stop15h 10m

Deal found 20/8£711

Mon 21/923:50 -

1 stop20h 35m

Fri 4/1220:20 -

1 stop16h 50m

Deal found 19/8£712

Find flight deals from Don Mueang Intl to Heathrow

Round-trip from	£619
One-way from	£249
Popular in	July
Cheapest in	November
Average price	£746

8/10-23/10
4 total stops
59h 40m total
Bangkok to London

Search Deals

27/9
2 total stops
55h 25m total
Bangkok to London

Search Deals

Highest demand for flights based on searches. 6% potential increase in price (£35 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease (£8 potential savings vs. average return price).

Search Deals

Average for round-trip flights in August 2026

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Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BangkokLondon

DMK Bangkok Don Mueang Intl - LHR London Heathrow

DMKLHR

Bangkok Don Mueang Intl

Wed 11/11

23:00-11:40

1 stop19h 40m

London Heathrow

Sun 15/11

22:00-20:10

1 stop15h 10m

£711

BangkokLondon

DMK Bangkok Don Mueang Intl - LHR London Heathrow

DMKLHR

Bangkok Don Mueang Intl

Thu 26/11

23:00-13:50

1 stop21h 50m

London Heathrow

Mon 7/12

09:10-07:55

1 stop15h 45m

£713

BangkokLondon

DMK Bangkok Don Mueang Intl - LHR London Heathrow

DMKLHR

Bangkok Don Mueang Intl

Tue 22/9

23:50-14:25

1 stop20h 35m

London Heathrow

Tue 6/10

19:50-20:45

1 stop18h 55m

£718

BangkokLondon

DMK Bangkok Don Mueang Intl - LHR London Heathrow

DMKLHR

Bangkok Don Mueang Intl

Tue 3/11

23:00-13:50

1 stop21h 50m

London Heathrow

Tue 17/11

22:00-20:10

1 stop15h 10m

£718

BangkokLondon

DMK Bangkok Don Mueang Intl - LHR London Heathrow

DMKLHR

Bangkok Don Mueang Intl

Fri 27/11

23:00-20:00

1 stop28h 00m

London Heathrow

Mon 7/12

09:10-07:55

1 stop15h 45m

£727

BangkokLondon

DMK Bangkok Don Mueang Intl - LHR London Heathrow

DMKLHR

Bangkok Don Mueang Intl

Mon 2/11

23:00-07:10

1 stop39h 10m

London Heathrow

Sat 14/11

13:40-20:10

1 stop23h 30m

£727

BangkokLondon

DMK Bangkok Don Mueang Intl - LHR London Heathrow

DMKLHR

Bangkok Don Mueang Intl

Sat 28/11

23:00-13:50

1 stop21h 50m

London Heathrow

Mon 7/12

09:10-07:55

1 stop15h 45m

£727

BangkokLondon

DMK Bangkok Don Mueang Intl - LHR London Heathrow

DMKLHR

Bangkok Don Mueang Intl

Sat 28/11

23:00-13:50

1 stop21h 50m

London Heathrow

Fri 4/12

20:20-20:10

1 stop16h 50m

£727

Fastest return journey

BangkokLondon

DMK Bangkok Don Mueang Intl - LHR London Heathrow

DMKLHR

Bangkok Don Mueang Intl

Fri 18/12

08:55-20:00

1 stop18h 05m

London Heathrow

Tue 5/1

09:10-07:55

1 stop15h 45m

£751

BangkokLondon

DMK Bangkok Don Mueang Intl - LHR London Heathrow

DMKLHR

Bangkok Don Mueang Intl

Fri 18/12

08:55-20:00

1 stop18h 05m

London Heathrow

Wed 6/1

20:20-20:10

1 stop16h 50m

£751

Flights are sorted by cheapest return flights first.

Deals found on 19/8

Showing 1-10 of 20 resultsSorted by cheapest first

Best time to book a flight from Don Mueang Intl to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Don Mueang Intl with our price prediction graph.

DMK-LHR

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

How long is the flight from Bangkok Don Mueang Intl Airport to London Heathrow Airport?
For as low as £711, Emirates can have you in London Heathrow Airport from Bangkok Don Mueang Intl Airport in 19h 40m. Bangkok Don Mueang Intl Airport and London Heathrow Airport are separated by a distance of 5929 mi.
Can I find deals for flights from Don Mueang Intl to Heathrow that include hotel bookings?
Yes. In addition to deals on Don Mueang Intl to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Don Mueang Intl to Heathrow?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Don Mueang Intl to Heathrow.
Can I find deals for business class flights from Don Mueang Intl to Heathrow?
Yes. Cheapflights offers flight deals from Don Mueang Intl to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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Can Cheapflights find flights from Don Mueang Intl to Heathrow with no change fees?

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Cheap flights from Bangkok Don Mueang Intl Airport to London Heathrow Airport from £249

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 27/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Don Mueang Intl to Heathrow

Cheapest flights from Don Mueang Intl to HeathrowExplore the most affordable flight options available from Don Mueang Intl to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 August 2026.

Explore the most affordable flight options available from Don Mueang Intl to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 August 2026.

Best flights from Don Mueang Intl to HeathrowDiscover carefully curated flight deals from Don Mueang Intl to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 August 2026.

Discover carefully curated flight deals from Don Mueang Intl to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 August 2026.

Last-minute flights from Don Mueang Intl to HeathrowDiscover last-minute flight deals from Don Mueang Intl to Heathrow. Data last updated 21 August 2026 and is based on user searches.

Discover last-minute flight deals from Don Mueang Intl to Heathrow. Data last updated 21 August 2026 and is based on user searches.

One-way flights from Don Mueang Intl to HeathrowSearch for one-way flight options from Don Mueang Intl to Heathrow. Find affordable one-way fares based on user searches. Data last updated 21 August 2026.

Search for one-way flight options from Don Mueang Intl to Heathrow. Find affordable one-way fares based on user searches. Data last updated 21 August 2026.

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

Best time to book a flight from Don Mueang Intl to Heathrow

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Related info for your journey

How long is the flight from Bangkok Don Mueang Intl Airport to London Heathrow Airport?

Can I find deals for flights from Don Mueang Intl to Heathrow that include hotel bookings?

How can I find direct flights from Don Mueang Intl to Heathrow?

Can I find deals for business class flights from Don Mueang Intl to Heathrow?

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Can Cheapflights find flights from Don Mueang Intl to Heathrow with no change fees?

Can Cheapflights notify me if prices for flights from Don Mueang Intl to Heathrow become cheaper?

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Cheapest flights from Don Mueang Intl to Heathrow
Explore the most affordable flight options available from Don Mueang Intl to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 August 2026.

Best flights from Don Mueang Intl to Heathrow
Discover carefully curated flight deals from Don Mueang Intl to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 August 2026.

Last-minute flights from Don Mueang Intl to Heathrow
Discover last-minute flight deals from Don Mueang Intl to Heathrow. Data last updated 21 August 2026 and is based on user searches.

One-way flights from Don Mueang Intl to Heathrow
Search for one-way flight options from Don Mueang Intl to Heathrow. Find affordable one-way fares based on user searches. Data last updated 21 August 2026.