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Cheap flights from London Heathrow Airport to Chiang Mai from £342

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 19/3. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — CNX
26 Feb — 5 Mar1
1 adult

The best prices from London Heathrow to Chiang Mai are usually found in February or June, booked 41 days in advance, depart on a Sunday or Monday and return on a Monday

Cheap flight deals from Heathrow to Chiang Mai

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Chiang Mai (CNX). 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 21 February 2025.

Round-trip from

£505

One-way from

£342

Popular in

July

Cheapest in

February

Average price

£751
China Eastern
  • China Eastern
  • 6/3-27/3
  • 6 total stops
  • 67h 05m total
  • London to Chiang Mai
Search Deals
China Eastern
  • China Eastern
  • 19/3
  • 1 total stop
  • 34h 20m total
  • London to Chiang Mai
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£63 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£22 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2025
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Find flight deals from Heathrow to Chiang Mai

Cheapest flights from Heathrow to Chiang Mai
Explore the most affordable flight options available from Heathrow to Chiang Mai. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 February 2025.

Thu 6/317:50LHR - CNX
3 stops32h 15mChina Eastern
Thu 27/310:05CNX - LHR
3 stops34h 50mChina Eastern
Deal found 20/2£505
Wed 12/322:00LHR - CNX
1 stop36h 50mChina Southern
Thu 1/511:30CNX - LHR
2 stops36h 35mChina Southern
Deal found 19/2£510
Fri 14/317:40LHR - CNX
1 stop21h 10mAir China
Fri 21/323:05CNX - LHR
2 stops27h 35mAir China
Deal found 20/2£512
Sun 18/520:50LHR - CNX
2 stops30h 30mMultiple Airlines
Wed 28/520:00CNX - LHR
2 stops29h 10mMultiple Airlines
Deal found 20/2£514
Sat 22/220:05LHR - CNX
2 stops32h 15mOman Air
Sat 22/312:10CNX - LHR
2 stops37h 15mOman Air
Deal found 20/2£612
Wed 21/508:40LHR - CNX
2 stops23h 05mKLM
Tue 1/720:00CNX - LHR
2 stops30h 55mKLM
Deal found 19/2£651
Sun 2/1113:55LHR - CNX
1 stop33h 00mEtihad Airways
Mon 17/1108:45CNX - LHR
1 stop34h 20mEtihad Airways
Deal found 20/2£671
Sat 8/1110:25LHR - CNX
1 stop18h 00mMalaysia Airlines
Fri 21/1112:25CNX - LHR
1 stop34h 00mMalaysia Airlines
Deal found 20/2£681
Sat 22/222:05LHR - CNX
1 stop37h 45mCathay Pacific
Sat 22/310:35CNX - LHR
1 stop35h 25mCathay Pacific
Deal found 20/2£684
Wed 21/512:30LHR - CNX
1 stop21h 45mThai Airways
Tue 1/709:25CNX - LHR
1 stop15h 45mThai Airways
Deal found 19/2£739
Mon 23/621:10LHR - CNX
1 stop31h 10mChina Airlines
Sun 10/811:20CNX - LHR
1 stop35h 10mChina Airlines
Deal found 20/2£741
Sun 30/1122:00LHR - CNX
2 stops30h 20mEmirates
Mon 12/119:45CNX - LHR
2 stops27h 25mEmirates
Deal found 21/2£896

Find flights from Heathrow to Chiang Mai within your budget

Customise your flight search to find flights from Heathrow to Chiang Mai 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 21 February 2025.

Fly from

Heathrow

Fly to

Chiang Mai

Route

Depart

Return

Price

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Thu 6/3

17:50-09:05

3 stops32h 15m

Chiang Mai

Thu 27/3

10:05-13:55

3 stops34h 50m

£505

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Wed 12/3

22:00-17:50

1 stop36h 50m

Chiang Mai

Thu 1/5

11:30-18:05

2 stops36h 35m

£510

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Fri 14/3

17:40-21:50

1 stop21h 10m

Chiang Mai

Fri 21/3

23:05-19:40

2 stops27h 35m

£512

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Sun 18/5

20:50-09:20

2 stops30h 30m

Chiang Mai

Wed 28/5

20:00-19:10

2 stops29h 10m

£514

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Wed 21/5

08:40-13:45

2 stops23h 05m

Chiang Mai

Tue 1/7

20:00-20:55

2 stops30h 55m

£651

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Thu 6/3

16:50-18:50

1 stop19h 00m

Chiang Mai

Thu 27/3

19:40-15:00

1 stop26h 20m

£690

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Fri 28/3

13:55-11:15

2 stops38h 20m

Chiang Mai

Sun 6/4

10:10-18:45

2 stops38h 35m

£709

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Wed 21/5

12:30-16:15

1 stop21h 45m

Chiang Mai

Tue 1/7

09:25-19:10

1 stop15h 45m

£739

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Mon 23/6

21:10-10:20

1 stop31h 10m

Chiang Mai

Sun 10/8

11:20-16:30

1 stop35h 10m

£741

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Thu 1/5

11:00-11:40

1 stop18h 40m

Chiang Mai

Sat 31/5

11:55-16:35

2 stops34h 40m

£845

Flights are sorted by cheapest return flights first.

Deals found on 20/2

Showing 1-10 of 24 results
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2
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Best time to book a flight from Heathrow to Chiang Mai

Have a flexible travel schedule? Discover the best time to fly to Chiang Mai from Heathrow 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 Heathrow to Chiang Mai

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

How far ahead should I book a flight from London Heathrow Airport to Chiang Mai?

Use this chart to determine the optimal time to book a return flight from Heathrow to Chiang Mai. Price data was last updated on 14 February 2025.

The price you pay for your flight from London Heathrow Airport to Chiang Mai may vary depending on when you book. For the best chance of a lower fare, look to book 41 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, April is the cheapest month in which you can book a flight from London Heathrow Airport to Chiang Mai (average of £776). Flying from London Heathrow Airport to Chiang Mai in July is currently the most expensive (average of £1,403). 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.

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

Find hourly flight availability from Heathrow to Chiang Mai. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 21 February 2025.

It’s typically best to fly out from London Heathrow Airport to Chiang Mai 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 Chiang Mai by month

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

In terms of precipitation, rainfall in Chiang Mai ranges from 0.0 - 250.0 inches per month. September is typically the wettest month, when rainfall can reach 250.0 mm. January is typically the driest time to visit Chiang Mai when rainfall is around 0.0 mm.

Temperature in Chiang Mai by month

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

If weather is an important factor for your trip to Chiang Mai, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 29.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 21.0 C).

Reviews of airlines servicing Chiang Mai

Get insights into the airlines that provide service to Chiang Mai. 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 Chiang Mai. Reviews last updated 21 February 2025.
Asiana Airlines
8.3
Very Good
445 reviews
Check prices

Comfort

8.1

Entertainment

7.8

Boarding

8.4

Food

8.1

Overall

8.3

Crew

8.5

Reviews

1 / 20

6.0
Good

Sofia,Feb 2025

MNL - ICN

I paid for seat selections but was not able to select my seats by going on the Asiana website. The whole process was cumbersome and gave up on it.

Asiana Airlines
8.3
Very Good
445 reviews
Asiana Airlines
8.3
Very Good
445 reviews
Check prices

Comfort

8.1

Entertainment

7.8

Boarding

8.4

Food

8.1

Overall

8.3

Crew

8.5

Reviews

1 / 20

6.0
Good

Sofia,Feb 2025

MNL - ICN

I paid for seat selections but was not able to select my seats by going on the Asiana website. The whole process was cumbersome and gave up on it.

China Airlines
8.2
Very Good
727 reviews
Asiana Airlines
8.3
Very Good
445 reviews
Check prices

Comfort

8.1

Entertainment

7.8

Boarding

8.4

Food

8.1

Overall

8.3

Crew

8.5

Reviews

1 / 20

6.0
Good

Sofia,Feb 2025

MNL - ICN

I paid for seat selections but was not able to select my seats by going on the Asiana website. The whole process was cumbersome and gave up on it.

Singapore Airlines
8.1
Very Good
1,299 reviews
Asiana Airlines
8.3
Very Good
445 reviews
Check prices

Comfort

8.1

Entertainment

7.8

Boarding

8.4

Food

8.1

Overall

8.3

Crew

8.5

Reviews

1 / 20

6.0
Good

Sofia,Feb 2025

MNL - ICN

I paid for seat selections but was not able to select my seats by going on the Asiana website. The whole process was cumbersome and gave up on it.

KLM
7.8
Good
1,333 reviews
Asiana Airlines
8.3
Very Good
445 reviews
Check prices

Comfort

8.1

Entertainment

7.8

Boarding

8.4

Food

8.1

Overall

8.3

Crew

8.5

Reviews

1 / 20

6.0
Good

Sofia,Feb 2025

MNL - ICN

I paid for seat selections but was not able to select my seats by going on the Asiana website. The whole process was cumbersome and gave up on it.

Thai Airways
7.8
Good
317 reviews
Asiana Airlines
8.3
Very Good
445 reviews
Check prices

Comfort

8.1

Entertainment

7.8

Boarding

8.4

Food

8.1

Overall

8.3

Crew

8.5

Reviews

1 / 20

6.0
Good

Sofia,Feb 2025

MNL - ICN

I paid for seat selections but was not able to select my seats by going on the Asiana website. The whole process was cumbersome and gave up on it.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Chiang Mai. 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 into for flights to Chiang Mai from London Heathrow?

    For a flight from London Heathrow to Chiang Mai, you will be flying into Chiang Mai. Chiang Mai (CNX) is just 1.9 mi from the center of the city. Chiang Mai is the only Chiang Mai airport and it handles 0 inbound flights from London Heathrow per day. 7 airlines have flights to Chiang Mai from London Heathrow on a regular basis.

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

    Flying on China Eastern is currently your cheapest option to Chiang Mai, with prices starting at £505. Additional return tickets that might be worth considering are offered by China Southern and Air China, with the lowest prices starting at £510 and £512, respectively. Users have found that China Eastern is 40% cheaper than the other options available to this destination.

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

    £342 is the cheapest one-way deal found within the past few days, from China Eastern. You may also be able to find cheap deals on China Southern and Etihad Airways, with prices starting from £376 and £415, respectively.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Heathrow to Chiang Mai 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 London Heathrow Airport to Chiang Mai?

    Currently, April is the cheapest month in which you can book a flight from London Heathrow Airport to Chiang Mai (average of £776). Flying from London Heathrow Airport to Chiang Mai in July is currently the most expensive (average of £1,403). 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

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Alternative routes for Heathrow to Chiang Mai

See prices for flight routes from nearby airports that may be better suited for you.
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Top 7 airlines flying from Heathrow to Chiang Mai

Discover the top 7 airlines that operate flights from Heathrow to Chiang Mai. 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 21 February 2025.
AirlineCheapestAverageFlexibilityOn-time
China SouthernCheapest£446Average£497FlexibilityNo cancel feeOn-time69%
Search China Southern flights
China EasternCheapest£455Average£554FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
Air ChinaCheapest£496Average£625FlexibilityNo cancel feeOn-time67%
Search Air China flights
Etihad AirwaysCheapest£634Average£698FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
Malaysia AirlinesCheapest£654Average£825FlexibilityNo cancel feeOn-time67%
Search Malaysia Airlines flights
EVA AirCheapest£720Average£796FlexibilityNo cancel feeOn-time74%
Search EVA Air flights
Thai AirwaysCheapest£747Average£887FlexibilityNo cancel feeOn-time77%
Search Thai Airways flights

Fly with Cheapflights

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

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

Cheapflights helps you find that perfect flight to Chiang Mai from Heathrow by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

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

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

Yes, Cheapflights offers price alerts on Heathrow to Chiang Mai 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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