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Cheap flights from Chiang Mai to London Heathrow Airport from ฿11,588

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 10/5. Fares are subject to change and may not be available on all flights or dates of travel.
CNX — LHR
30 Apr — 7 May1
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 25 April 2025.

Round-trip from

฿22,573

One-way from

฿11,588

Popular in

July

Cheapest in

December

Average price

฿37,946
China Southern
  • China Southern
  • 9/6-16/6
  • 3 total stops
  • 68h 55m total
  • Chiang Mai to London
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10/5
  • 10/5
  • 2 total stops
  • 50h 20m total
  • Chiang Mai to London
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Highest demand for flights based on searches. 11% potential increase in price (฿161,742 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (฿48,383 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 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 25 April 2025.

Mon 9/611:30CNX - LHR
1 stop37h 30mChina Southern
Mon 16/621:00LHR - CNX
2 stops31h 25mChina Southern
Deal found 25/4฿22,573
Fri 23/514:55CNX - LHR
1 stop33h 45mChina Eastern
Fri 30/521:20LHR - CNX
1 stop34h 05mChina Eastern
Deal found 25/4฿25,956
Thu 4/917:40CNX - LHR
1 stop28h 05mSingapore Airlines
Tue 16/922:05LHR - CNX
1 stop36h 35mSingapore Airlines
Deal found 25/4฿36,238
Thu 4/920:00CNX - LHR
1 stop29h 20mEVA Air
Wed 17/921:35LHR - CNX
1 stop15h 35mEVA Air
Deal found 25/4฿36,439
Fri 26/1223:05CNX - LHR
1 stop25h 45mAir China
Thu 15/120:25LHR - CNX
1 stop18h 25mAir China
Deal found 25/4฿36,740
Thu 4/920:00CNX - LHR
2 stops18h 20mออสเตรียนแอร์ไลน์
Wed 17/919:30LHR - CNX
2 stops17h 40mออสเตรียนแอร์ไลน์
Deal found 25/4฿36,807
Sat 28/611:55CNX - LHR
2 stops28h 20mMultiple Airlines
Thu 10/709:45LHR - CNX
2 stops19h 30mMultiple Airlines
Deal found 25/4฿37,309
Sun 8/600:45CNX - LHR
1 stop24h 05mAsiana Airlines
Mon 16/620:40LHR - CNX
1 stop21h 00mAsiana Airlines
Deal found 25/4฿38,214
Sun 29/616:55CNX - LHR
1 stop32h 15mThai Airways
Thu 10/721:25LHR - CNX
1 stop17h 05mThai Airways
Deal found 25/4฿39,620
Thu 4/920:00CNX - LHR
2 stops41h 55mสวิส อินเตอร์เนชั่นแนล แอร์ไลน์
Wed 17/917:10LHR - CNX
2 stops38h 35mสวิส อินเตอร์เนชั่นแนล แอร์ไลน์
Deal found 25/4฿40,156
Tue 1/711:55CNX - LHR
2 stops36h 20mCathay Pacific
Tue 15/718:20LHR - CNX
1 stop18h 20mCathay Pacific
Deal found 25/4฿44,611
Thu 25/1200:15CNX - LHR
1 stop23h 15mKorean Air
Thu 15/118:50LHR - CNX
1 stop21h 15mKorean Air
Deal found 25/4฿55,227

Cheapflights Fare Finder

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 25 April 2025.
Use the filters below to find and compare flights from Chiang Mai to London Heathrow Airport that are best for you.

Fly from

Chiang Mai

Fly to

Heathrow

Route

Depart

Return

Price

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Mon 9/6

11:30-19:00

1 stop37h 30m

London Heathrow

Mon 16/6

21:00-10:25

2 stops31h 25m

฿22,573

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Fri 23/5

14:55-18:40

1 stop33h 45m

London Heathrow

Fri 30/5

21:20-13:25

1 stop34h 05m

฿25,956

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Thu 4/9

17:40-15:45

1 stop28h 05m

London Heathrow

Wed 17/9

09:25-16:40

1 stop25h 15m

฿36,238

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Thu 4/9

20:00-19:20

1 stop29h 20m

London Heathrow

Wed 17/9

21:35-19:10

1 stop15h 35m

฿36,439

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Thu 4/9

20:00-08:20

2 stops18h 20m

London Heathrow

Wed 17/9

19:30-19:10

2 stops17h 40m

฿36,807

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Sat 28/6

11:55-10:15

2 stops28h 20m

London Heathrow

Thu 10/7

09:45-11:15

2 stops19h 30m

฿37,309

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Sun 8/6

00:45-18:50

1 stop24h 05m

London Heathrow

Mon 16/6

20:40-23:40

1 stop21h 00m

฿38,214

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Sun 29/6

16:55-19:10

1 stop32h 15m

London Heathrow

Thu 10/7

21:25-20:30

1 stop17h 05m

฿39,620

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Thu 4/9

20:00-07:55

2 stops41h 55m

London Heathrow

Wed 17/9

17:10-13:45

2 stops38h 35m

฿40,156

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Tue 1/7

11:55-18:15

2 stops36h 20m

London Heathrow

Tue 15/7

18:20-18:40

1 stop18h 20m

฿44,611

Flights are sorted by cheapest return flights first.

Deals found on 25/4

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.

Cheapflights Insights

Everything you need to know about your flight from Chiang Mai to London Heathrow Airport

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 25 April 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 25 April 2025.
EVA Air
8.4
Very Good
1,180 reviews
Check prices

Food

8.1

Boarding

8.4

Crew

8.6

Entertainment

8.0

Overall

8.4

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Gary,Apr 2025

DPS - TPE

The staff was excellent. Kind, courteous, and overall just hospitable. Definitely recommend
EVA Air
8.4
Very Good
1,180 reviews
EVA Air
8.4
Very Good
1,180 reviews
Check prices

Food

8.1

Boarding

8.4

Crew

8.6

Entertainment

8.0

Overall

8.4

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Gary,Apr 2025

DPS - TPE

The staff was excellent. Kind, courteous, and overall just hospitable. Definitely recommend
China Airlines
8.3
Very Good
729 reviews
EVA Air
8.4
Very Good
1,180 reviews
Check prices

Food

8.1

Boarding

8.4

Crew

8.6

Entertainment

8.0

Overall

8.4

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Gary,Apr 2025

DPS - TPE

The staff was excellent. Kind, courteous, and overall just hospitable. Definitely recommend
Asiana Airlines
8.2
Very Good
443 reviews
EVA Air
8.4
Very Good
1,180 reviews
Check prices

Food

8.1

Boarding

8.4

Crew

8.6

Entertainment

8.0

Overall

8.4

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Gary,Apr 2025

DPS - TPE

The staff was excellent. Kind, courteous, and overall just hospitable. Definitely recommend
Singapore Airlines
8.1
Very Good
1,290 reviews
EVA Air
8.4
Very Good
1,180 reviews
Check prices

Food

8.1

Boarding

8.4

Crew

8.6

Entertainment

8.0

Overall

8.4

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Gary,Apr 2025

DPS - TPE

The staff was excellent. Kind, courteous, and overall just hospitable. Definitely recommend

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. 0 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 ฿22,573, China Southern will fly you from Chiang Mai to London Heathrow Airport and back. In addition to China Southern, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from China Eastern and Singapore Airlines - these airlines can fly you to your destination from ฿25,956 and ฿36,204, respectively. China Southern is currently priced 37% 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 Air China. According to our data, you can fly for as low as ฿12,057. Users have also found prices from ฿12,325 and ฿14,770 on China Eastern and Thai Airways, 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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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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