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Cheap flights from Chiang Mai to London Heathrow Airport from £244

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 18/5. Fares are subject to change and may not be available on all flights or dates of travel.
CNX — LHR
20 Apr — 27 Apr1
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 15 April 2025.

Round-trip from

£563

One-way from

£244

Popular in

July

Cheapest in

December

Average price

£857
China Eastern
  • China Eastern
  • 15/5-22/5
  • 5 total stops
  • 62h 05m total
  • Chiang Mai to London
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18/5
  • 18/5
  • 3 total stops
  • 34h 45m total
  • Chiang Mai to London
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£82 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£25 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

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 15 April 2025.

Thu 15/516:20CNX - LHR
2 stops32h 20mChina Eastern
Thu 22/521:20LHR - CNX
3 stops29h 45mChina Eastern
Deal found 14/4£563
Thu 15/518:50CNX - LHR
1 stop30h 10mChina Southern
Thu 22/522:10LHR - CNX
1 stop30h 15mChina Southern
Deal found 14/4£664
Thu 4/921:10CNX - LHR
2 stops17h 10mAustrian Airlines
Tue 16/919:30LHR - CNX
2 stops17h 40mAustrian Airlines
Deal found 15/4£775
Thu 4/917:40CNX - LHR
1 stop31h 50mSingapore Airlines
Tue 16/920:35LHR - CNX
1 stop38h 05mSingapore Airlines
Deal found 15/4£821
Sat 28/600:45CNX - LHR
1 stop24h 05mAsiana Airlines
Thu 10/720:40LHR - CNX
1 stop21h 00mAsiana Airlines
Deal found 15/4£837
Tue 1/709:25CNX - LHR
1 stop15h 55mMultiple Airlines
Tue 15/721:35LHR - CNX
1 stop15h 35mMultiple Airlines
Deal found 15/4£900
Sat 28/616:55CNX - LHR
1 stop32h 15mThai Airways
Thu 10/721:25LHR - CNX
1 stop17h 05mThai Airways
Deal found 15/4£921
Wed 30/420:00CNX - LHR
2 stops26h 10mEmirates
Tue 13/509:05LHR - CNX
2 stops28h 05mEmirates
Deal found 15/4£1,142

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 858,174 searches. Data last updated 15 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

Thu 15/5

16:20-18:40

2 stops32h 20m

London Heathrow

Thu 22/5

21:20-09:05

2 stops29h 45m

£563

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Thu 15/5

18:50-19:00

1 stop30h 10m

London Heathrow

Thu 22/5

22:10-10:25

1 stop30h 15m

£664

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Thu 4/9

21:10-08:20

2 stops17h 10m

London Heathrow

Tue 16/9

19:30-19:10

2 stops17h 40m

£775

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Thu 4/9

17:40-19:30

1 stop31h 50m

London Heathrow

Tue 16/9

20:35-16:40

1 stop38h 05m

£821

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Sat 28/6

00:45-18:50

1 stop24h 05m

London Heathrow

Thu 10/7

20:40-23:40

1 stop21h 00m

£837

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Tue 1/7

09:25-19:20

1 stop15h 55m

London Heathrow

Tue 15/7

21:35-19:10

1 stop15h 35m

£900

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Sat 28/6

16:55-19:10

1 stop32h 15m

London Heathrow

Thu 10/7

21:25-20:30

1 stop17h 05m

£921

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Wed 30/4

20:00-16:10

2 stops26h 10m

London Heathrow

Tue 13/5

09:05-19:10

2 stops28h 05m

£1,142

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Sun 18/5

13:55-18:40

3 stops34h 45m

£244

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Thu 8/5

16:20-18:40

2 stops32h 20m

£272

Flights are sorted by cheapest return flights first.

Deals found on 15/4

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

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 15 April 2025.
China Airlines
8.2
Very Good
729 reviews
Check prices

Entertainment

8.0

Crew

8.5

Boarding

8.3

Comfort

8.0

Overall

8.2

Food

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver
China Airlines
8.2
Very Good
729 reviews
China Airlines
8.2
Very Good
729 reviews
Check prices

Entertainment

8.0

Crew

8.5

Boarding

8.3

Comfort

8.0

Overall

8.2

Food

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver
Asiana Airlines
8.2
Very Good
438 reviews
China Airlines
8.2
Very Good
729 reviews
Check prices

Entertainment

8.0

Crew

8.5

Boarding

8.3

Comfort

8.0

Overall

8.2

Food

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver
Singapore Airlines
8.1
Very Good
1,288 reviews
China Airlines
8.2
Very Good
729 reviews
Check prices

Entertainment

8.0

Crew

8.5

Boarding

8.3

Comfort

8.0

Overall

8.2

Food

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver
Emirates
8.0
Very Good
3,196 reviews
China Airlines
8.2
Very Good
729 reviews
Check prices

Entertainment

8.0

Crew

8.5

Boarding

8.3

Comfort

8.0

Overall

8.2

Food

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver
Thai Airways
7.7
Good
323 reviews
China Airlines
8.2
Very Good
729 reviews
Check prices

Entertainment

8.0

Crew

8.5

Boarding

8.3

Comfort

8.0

Overall

8.2

Food

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver

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?

    If you book a flight to London Heathrow from Chiang Mai, you will be flying from Chiang Mai, which is the city’s only airport. Chiang Mai (CNX) is located 1.9 mi from the center of Chiang Mai. There are 0 flights from Chiang Mai to London Heathrow per day from 1 airline.

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

    Currently priced at £563, 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 Austrian Airlines - these airlines can fly you to your destination from £664 and £775, respectively. Users have found that China Eastern is 30% cheaper than the other options available to this destination.

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

    The cheapest airline one-way is China Eastern, with whom users have recently found tickets for as low as £272. However, be on the lookout for offers from China Southern and Air China, as they are both options that can get you from Chiang Mai to London Heathrow Airport for a low price.

  • 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, January is the cheapest month in which you can book a flight from Chiang Mai to London Heathrow Airport (average of £112). Flying from Chiang Mai to London Heathrow Airport in August is currently the most expensive (average of £164). 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
Hounslow
Deal
Milton Keynes
Gatwick
Luton
Slough
Croydon
Eastbourne
Wembley
Northampton
Hayes
Crawley
Southend-on-Sea
Maidstone
Swindon
Ipswich
Southall
Ilford
Winchester
Folkestone

Browse thousands of different options on Cheapflights for your next trip

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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 858,174 searches. Data last updated 15 April 2025.
AirlineCheapestAverageFlexibilityOn-time
Thai AirwaysCheapest£787Average£977FlexibilityNo cancel feeOn-time77%
Search Thai Airways flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Cheapflights makes it easy to find Chiang Mai to Heathrow flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Chiang Mai to Heathrow.

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from Chiang Mai to Heathrow, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Chiang Mai to Heathrow become cheaper?

Yes, Cheapflights offers price alerts on Chiang Mai to Heathrow flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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