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Cheap flights from Chiang Mai to London Heathrow Airport from ฿9,740

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 13/5. Fares are subject to change and may not be available on all flights or dates of travel.
CNX — LHR
22 Mar — 29 Mar1
1 adult

Cheap flight deals from Chiang Mai to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Chiang Mai (CNX) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 17 March 2025.

Round-trip from

฿25,222

One-way from

฿9,740

Popular in

July

Cheapest in

December

Average price

฿37,581
China Eastern
  • China Eastern
  • 1/4-8/4
  • 2 total stops
  • 67h 50m total
  • Chiang Mai to London
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13/5
  • 13/5
  • 2 total stops
  • 33h 40m total
  • Chiang Mai to London
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Highest demand for flights based on searches. 5% potential increase in price (฿62,111 potential increase over avg. return price).
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Cheapest flight prices on average. 4% potential price decrease (฿53,924 potential savings vs. average return price).
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Average for round-trip flights in March 2025
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Find flight deals from Chiang Mai to Heathrow

Cheapest flights from Chiang Mai to Heathrow
Explore the most affordable flight options available from Chiang Mai to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 March 2025.

Tue 1/414:55CNX - LHR
1 stop33h 45mChina Eastern
Tue 8/421:20LHR - CNX
1 stop34h 05mChina Eastern
Deal found 17/3฿25,222
Wed 16/418:50CNX - LHR
2 stops29h 15mChina Southern
Wed 23/422:10LHR - CNX
1 stop30h 15mChina Southern
Deal found 17/3฿27,640
Wed 16/423:05CNX - LHR
1 stop27h 25mAir China
Wed 23/422:40LHR - CNX
1 stop17h 10mAir China
Deal found 17/3฿29,017
Fri 30/514:10CNX - LHR
2 stops35h 40mMultiple Airlines
Tue 26/814:45LHR - CNX
2 stops36h 35mMultiple Airlines
Deal found 17/3฿30,293
Sat 20/914:40CNX - LHR
1 stop21h 15mMalaysia Airlines
Sat 27/911:00LHR - CNX
1 stop18h 40mMalaysia Airlines
Deal found 17/3฿31,032
Sat 20/920:00CNX - LHR
2 stops26h 10mEmirates
Sat 27/909:05LHR - CNX
2 stops20h 10mEmirates
Deal found 17/3฿36,036
Thu 29/500:45CNX - LHR
1 stop24h 05mAsiana Airlines
Tue 26/820:40LHR - CNX
1 stop21h 00mAsiana Airlines
Deal found 17/3฿36,943
Mon 1/917:40CNX - LHR
1 stop28h 05mSingapore Airlines
Sat 4/1022:05LHR - CNX
1 stop36h 35mSingapore Airlines
Deal found 16/3฿39,462
Wed 30/411:55CNX - LHR
2 stops37h 15mโอมานแอร์
Tue 13/520:50LHR - CNX
2 stops32h 25mโอมานแอร์
Deal found 17/3฿40,402
Wed 30/421:10CNX - LHR
2 stops30h 30mออสเตรียนแอร์ไลน์
Tue 13/519:30LHR - CNX
2 stops19h 00mออสเตรียนแอร์ไลน์
Deal found 16/3฿47,422

Find flights from Chiang Mai to Heathrow within your budget

Customise your flight search to find flights from Chiang Mai to Heathrow that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 17,341 searches. Data last updated 17 March 2025.

Fly from

Chiang Mai

Fly to

Heathrow

Route

Depart

Return

Price

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Tue 1/4

14:55-18:40

1 stop33h 45m

London Heathrow

Tue 8/4

21:20-13:25

1 stop34h 05m

฿25,222

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Wed 16/4

18:50-18:05

2 stops29h 15m

London Heathrow

Wed 23/4

22:10-10:25

1 stop30h 15m

฿27,640

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Wed 16/4

23:05-20:30

1 stop27h 25m

London Heathrow

Wed 23/4

22:40-21:50

1 stop17h 10m

฿29,017

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Fri 30/5

14:10-19:50

2 stops35h 40m

London Heathrow

Tue 26/8

14:45-09:20

2 stops36h 35m

฿30,293

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Thu 29/5

00:45-18:50

1 stop24h 05m

London Heathrow

Tue 26/8

20:40-23:40

1 stop21h 00m

฿36,943

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Mon 1/9

17:40-15:45

1 stop28h 05m

London Heathrow

Sat 4/10

22:05-16:40

1 stop36h 35m

฿39,462

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Wed 30/4

11:55-19:10

2 stops37h 15m

London Heathrow

Tue 13/5

20:50-11:15

2 stops32h 25m

฿40,402

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Wed 30/4

21:10-21:40

2 stops30h 30m

London Heathrow

Tue 13/5

19:30-20:30

2 stops19h 00m

฿47,422

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Wed 30/4

20:00-14:25

2 stops24h 25m

London Heathrow

Tue 13/5

09:05-13:45

2 stops22h 40m

฿47,992

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Tue 13/5

15:30-19:10

2 stops33h 40m

฿9,740

Flights are sorted by cheapest return flights first.

Deals found on 16/3

Showing 1-10 of 18 results
1
2

Best time to book a flight from Chiang Mai to Heathrow

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

Travel insights for flights from Chiang Mai to Heathrow

Get recent, data-driven insights about flights from Chiang Mai to Heathrow including ideal travel times, pricing trends, and more.

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

Find hourly flight availability from Chiang Mai to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 17 March 2025.

It’s typically best to fly out from Chiang Mai to London Heathrow Airport at midday. Doing so could potentially save you 27% on the flight price compared to flying in the morning, which is usually more expensive.

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

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.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

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).

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated 17 March 2025.
China Airlines
8.2
Very Good
725 reviews
Check prices

Overall

8.2

Crew

8.5

Food

7.8

Boarding

8.3

Comfort

8.0

Entertainment

8.0

Reviews

1 / 20

10.0
Excellent

Sopharith,Feb 2025

TPE - PNH

All are excellence, but we had to pay 150$ extra charge each person with our names in passports and tickets. It was just swiping between first names and last names. It might be our mistake when we bought the tickets, but I thought it was expensive just to swipe the names. Anyway, thanks a lot. All excellence

China Airlines
8.2
Very Good
725 reviews
China Airlines
8.2
Very Good
725 reviews
Check prices

Overall

8.2

Crew

8.5

Food

7.8

Boarding

8.3

Comfort

8.0

Entertainment

8.0

Reviews

1 / 20

10.0
Excellent

Sopharith,Feb 2025

TPE - PNH

All are excellence, but we had to pay 150$ extra charge each person with our names in passports and tickets. It was just swiping between first names and last names. It might be our mistake when we bought the tickets, but I thought it was expensive just to swipe the names. Anyway, thanks a lot. All excellence

Asiana Airlines
8.2
Very Good
441 reviews
China Airlines
8.2
Very Good
725 reviews
Check prices

Overall

8.2

Crew

8.5

Food

7.8

Boarding

8.3

Comfort

8.0

Entertainment

8.0

Reviews

1 / 20

10.0
Excellent

Sopharith,Feb 2025

TPE - PNH

All are excellence, but we had to pay 150$ extra charge each person with our names in passports and tickets. It was just swiping between first names and last names. It might be our mistake when we bought the tickets, but I thought it was expensive just to swipe the names. Anyway, thanks a lot. All excellence

Singapore Airlines
8.1
Very Good
1,281 reviews
China Airlines
8.2
Very Good
725 reviews
Check prices

Overall

8.2

Crew

8.5

Food

7.8

Boarding

8.3

Comfort

8.0

Entertainment

8.0

Reviews

1 / 20

10.0
Excellent

Sopharith,Feb 2025

TPE - PNH

All are excellence, but we had to pay 150$ extra charge each person with our names in passports and tickets. It was just swiping between first names and last names. It might be our mistake when we bought the tickets, but I thought it was expensive just to swipe the names. Anyway, thanks a lot. All excellence

Emirates
8.0
Very Good
3,197 reviews
China Airlines
8.2
Very Good
725 reviews
Check prices

Overall

8.2

Crew

8.5

Food

7.8

Boarding

8.3

Comfort

8.0

Entertainment

8.0

Reviews

1 / 20

10.0
Excellent

Sopharith,Feb 2025

TPE - PNH

All are excellence, but we had to pay 150$ extra charge each person with our names in passports and tickets. It was just swiping between first names and last names. It might be our mistake when we bought the tickets, but I thought it was expensive just to swipe the names. Anyway, thanks a lot. All excellence

Related info for your journey

Find useful and relevant information for your journey from Chiang Mai to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Chiang Mai to London Heathrow?

    For a flight from Chiang Mai to London Heathrow, you will be flying from Chiang Mai. Chiang Mai (CNX) is just 3.1 km from the centre of the city. Chiang Mai is the only Chiang Mai airport and it handles 0 outbound flights to London Heathrow per day. 2 airlines have flights to London Heathrow from Chiang Mai on a regular basis.

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

    Currently priced at ฿25,222, China Eastern will fly you from Chiang Mai to London Heathrow Airport and back. In addition to China Eastern, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from China Southern and Air China - these airlines can fly you to your destination from ฿27,640 and ฿29,017, respectively. China Eastern is currently priced 27% below the average price you’ll pay for this route.

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

    For one-way options, check prices for China Eastern. According to our data, you can fly for as low as ฿12,191. Users have also found prices from ฿12,695 and ฿14,576 on Malaysia Airlines and Air China, respectively.

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

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

  • How can I find direct flights from Chiang Mai to Heathrow?

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

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

    Yes. Cheapflights offers flight deals from Chiang Mai 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.

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

    Currently, December is the cheapest month in which you can book a flight from Chiang Mai to London Heathrow Airport (average of ฿810). Flying from Chiang Mai to London Heathrow Airport in July is currently the most expensive (average of ฿1,025). 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.

See more FAQs

Travelling to a place near Chiang Mai?

Book flights to Chiang Mai if you plan to visit one of these locations
Brentford
Waterlooville

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Top 2 airlines flying from Chiang Mai to Heathrow

Discover the top 2 airlines that operate flights from Chiang Mai to Heathrow. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 17,341 searches. Data last updated 17 March 2025.
AirlineCheapestAverageFlexibilityOn-time
Air ChinaCheapest฿22,553Average฿27,068FlexibilityNo cancel feeOn-time67%
Search Air China flights
Malaysia AirlinesCheapest฿23,287Average฿24,984FlexibilityNo cancel feeOn-time67%
Search Malaysia Airlines flights

Fly with Cheapflights

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

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

Need flexible booking options for your flight to Heathrow from Chiang Mai? 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 Chiang Mai to Heathrow become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Heathrow from Chiang Mai today and book when prices fit your budget.

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