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Cheap flights from Chiang Mai to London Heathrow Airport from ฿7,878

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 10/12. Fares are subject to change and may not be available on all flights or dates of travel.
CNX — LHR
3 Jan — 10 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Chiang Mai to Heathrow

Enter your travel dates to find the best prices.

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 4 December 2025.

Thu 11/1216:25CNX - LHR
2 stops32h 05mChina Eastern
Wed 7/121:00LHR - CNX
2 stops29h 05mChina Eastern
Deal found 2/12฿18,532
Sat 20/1221:40CNX - LHR
2 stops28h 40mMultiple Airlines
Sat 3/108:45LHR - CNX
2 stops19h 35mMultiple Airlines
Deal found 1/12฿37,989
Sat 20/1210:10CNX - LHR
2 stops40h 05mสวิส อินเตอร์เนชั่นแนล แอร์ไลน์
Sat 3/119:25LHR - CNX
2 stops18h 35mสวิส อินเตอร์เนชั่นแนล แอร์ไลน์
Deal found 2/12฿41,657
Sun 14/1218:50CNX - LHR
1 stop30h 45mChina Southern
Sat 27/1221:30LHR - CNX
2 stops37h 20mChina Southern
Deal found 4/12฿42,326
Sat 20/1223:05CNX - LHR
1 stop23h 50mAir China
Sat 3/120:25LHR - CNX
1 stop18h 25mAir China
Deal found 1/12฿42,518
Sun 14/1223:05CNX - LHR
1 stop25h 45mAir China
Sat 27/1217:40LHR - CNX
1 stop21h 10mAir China
Deal found 2/12฿43,220

Find 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 4 December 2025.

Round-trip from

฿22,742

One-way from

฿7,878

Popular in

October

Cheapest in

December

Average price

฿24,337
5/3-20/3
  • 5/3-20/3
  • 3 total stops
  • 47h 25m total
  • Chiang Mai to London
Search Deals
China Eastern
  • China Eastern
  • 10/12
  • 2 total stops
  • 32h 05m total
  • Chiang Mai to London
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (฿54,498 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (฿34,014 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 4 December 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

Thu 5/3

23:20-17:30

1 stop25h 10m

London Heathrow

Mon 9/3

21:00-09:05

2 stops29h 05m

฿25,772

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Tue 3/3

14:50-15:25

1 stop31h 35m

London Heathrow

Fri 13/3

10:25-13:50

1 stop20h 25m

฿27,335

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Sat 14/3

22:50-17:55

3 stops50h 05m

London Heathrow

Thu 2/7

14:45-05:55

1 stop33h 10m

฿27,654

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Wed 4/3

12:25-15:25

1 stop34h 00m

London Heathrow

Tue 17/3

10:25-11:25

1 stop18h 00m

฿27,846

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Sun 15/3

23:05-15:55

1 stop23h 50m

London Heathrow

Thu 25/6

11:00-11:40

1 stop18h 40m

฿28,069

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Mon 2/3

19:40-15:00

1 stop26h 20m

London Heathrow

Mon 16/3

20:15-09:50

1 stop30h 35m

฿28,739

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Thu 5/3

19:40-15:00

1 stop26h 20m

London Heathrow

Mon 9/3

20:15-18:50

1 stop39h 35m

฿28,898

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Sat 28/2

08:50-14:30

1 stop36h 40m

London Heathrow

Fri 20/3

13:55-06:05

1 stop33h 10m

฿30,142

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Fri 12/12

14:30-17:30

3 stops34h 00m

฿9,505

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Fri 12/12

10:05-17:30

2 stops38h 25m

฿9,505

Flights are sorted by cheapest return flights first.

Deals found on 3/12

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 4 December 2025.

It’s typically best to fly out from Chiang Mai to London Heathrow Airport at midday. Doing so could potentially save you 26% on the flight price compared to flying in the morning, which is usually more expensive.

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 4 December 2025.
Read reviews from past customers who have flown with เอทิฮัดแอร์เวย์ from Chiang Mai to London Heathrow Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
เอทิฮัดแอร์เวย์
7.4
Good
1,326 reviews
Check prices

Comfort

7.3

Food

7.2

Crew

7.8

Boarding

7.6

Overall

7.4

Entertainment

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Nov 2025

AMD - AUH

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.
เอทิฮัดแอร์เวย์
7.4
Good
1,326 reviews
เอทิฮัดแอร์เวย์
7.4
Good
1,326 reviews
Check prices

Comfort

7.3

Food

7.2

Crew

7.8

Boarding

7.6

Overall

7.4

Entertainment

7.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Nov 2025

AMD - AUH

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.

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. 1 airline has flights to London Heathrow from Chiang Mai on a regular basis.

  • How long is the flight from Chiang Mai to London Heathrow Airport?

    Airlines like China Eastern and Malaysia Airlines fly from Chiang Mai to London Heathrow Airport in about 25h 10m. The time it takes to get you to your destination can typically vary by up to 6h 25m. The distance from Chiang Mai to London Heathrow Airport is about 9009 km. Both multi-stop and direct flights can be found to your destination and back.

  • What is the cheapest airline to fly from Chiang Mai to London Heathrow Airport round-trip?

    Currently priced at ฿23,048, เอทิฮัดแอร์เวย์ will fly you from Chiang Mai to London Heathrow Airport and back. In addition to เอทิฮัดแอร์เวย์, many other airlines offer competitively priced options for your trip. เอทิฮัดแอร์เวย์ is currently priced 36% below the average price you’ll pay for this route.

  • 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.

See more FAQs

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Brentford
Waterlooville

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Top airline flying from Chiang Mai to Heathrow

Discover the top airline 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 4 December 2025.
AirlineCheapestAverageFlexibilityOn-time
เอทิฮัดแอร์เวย์Cheapest฿23,048Average฿30,990FlexibilityNo cancel feeOn-time75%
Search เอทิฮัดแอร์เวย์ flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Chiang Mai to Heathrow?

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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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