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Cheap flights from Chiang Mai to London Heathrow Airport from £231

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 1/4. Fares are subject to change and may not be available on all flights or dates of travel.
CNX — LHR
29 Mar — 5 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 24 March 2025.

Round-trip from

£581

One-way from

£231

Popular in

July

Cheapest in

December

Average price

£866
13/5-23/5
  • 13/5-23/5
  • 5 total stops
  • 63h 00m total
  • Chiang Mai to London
Search Deals
1/4
  • 1/4
  • 3 total stops
  • 35h 40m total
  • Chiang Mai to London
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (£32 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£29 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 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 24 March 2025.

Tue 13/521:20CNX - LHR
2 stops28h 40mMultiple Airlines
Fri 23/507:05LHR - CNX
3 stops34h 20mMultiple Airlines
Deal found 23/3£581
Wed 2/416:20CNX - LHR
2 stops32h 20mChina Eastern
Wed 9/421:20LHR - CNX
2 stops29h 45mChina Eastern
Deal found 23/3£594
Tue 13/523:05CNX - LHR
1 stop27h 25mAir China
Fri 23/522:40LHR - CNX
1 stop17h 10mAir China
Deal found 23/3£655
Tue 13/518:50CNX - LHR
2 stops29h 15mChina Southern
Fri 23/522:10LHR - CNX
1 stop30h 15mChina Southern
Deal found 23/3£666
Mon 12/500:45CNX - LHR
1 stop24h 05mAsiana Airlines
Fri 23/520:40LHR - CNX
1 stop21h 00mAsiana Airlines
Deal found 23/3£796
Wed 30/420:00CNX - LHR
2 stops26h 10mEmirates
Tue 13/509:05LHR - CNX
2 stops28h 05mEmirates
Deal found 23/3£895
Wed 30/419:25CNX - LHR
1 stop25h 50mCathay Pacific
Tue 13/517:00LHR - CNX
1 stop19h 40mCathay Pacific
Deal found 24/3£931
Sun 22/612:35CNX - LHR
1 stop34h 00mMalaysia Airlines
Sun 20/711:00LHR - CNX
1 stop18h 40mMalaysia Airlines
Deal found 23/3£971
Sun 22/614:35CNX - LHR
1 stop34h 45mEVA Air
Sun 20/721:35LHR - CNX
1 stop15h 35mEVA Air
Deal found 24/3£988

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 24 March 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

Tue 13/5

21:20-20:00

2 stops28h 40m

London Heathrow

Fri 23/5

07:05-23:25

3 stops34h 20m

£581

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Sat 10/5

14:40-16:35

1 stop31h 55m

London Heathrow

Sat 17/5

11:00-11:40

1 stop18h 40m

£613

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Sat 10/5

16:20-18:40

2 stops32h 20m

London Heathrow

Sat 17/5

21:20-09:05

2 stops29h 45m

£631

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Tue 13/5

23:05-20:30

1 stop27h 25m

London Heathrow

Fri 23/5

22:40-21:50

1 stop17h 10m

£655

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Tue 13/5

18:50-18:05

2 stops29h 15m

London Heathrow

Fri 23/5

22:10-10:25

1 stop30h 15m

£666

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Mon 12/5

00:45-18:50

1 stop24h 05m

London Heathrow

Fri 23/5

20:40-23:40

1 stop21h 00m

£796

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

£895

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Wed 30/4

19:25-15:15

1 stop25h 50m

London Heathrow

Tue 13/5

17:00-18:40

1 stop19h 40m

£931

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Sun 22/6

14:35-19:20

1 stop34h 45m

London Heathrow

Sun 20/7

21:35-19:10

1 stop15h 35m

£988

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Tue 1/4

13:30-19:10

3 stops35h 40m

£231

Flights are sorted by cheapest return flights first.

Deals found on 24/3

Showing 1-10 of 16 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 24 March 2025.
Get a feel of what it's like to fly with EVA Air, Asiana Airlines and Emirates from Chiang Mai to London by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very Good
1,170 reviews
Check prices

Entertainment

8.0

Food

8.0

Boarding

8.4

Crew

8.6

Overall

8.4

Comfort

8.3

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
EVA Air
8.4
Very Good
1,170 reviews
EVA Air
8.4
Very Good
1,170 reviews
Check prices

Entertainment

8.0

Food

8.0

Boarding

8.4

Crew

8.6

Overall

8.4

Comfort

8.3

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
Asiana Airlines
8.2
Very Good
442 reviews
EVA Air
8.4
Very Good
1,170 reviews
Check prices

Entertainment

8.0

Food

8.0

Boarding

8.4

Crew

8.6

Overall

8.4

Comfort

8.3

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
Emirates
8.0
Very Good
3,189 reviews
EVA Air
8.4
Very Good
1,170 reviews
Check prices

Entertainment

8.0

Food

8.0

Boarding

8.4

Crew

8.6

Overall

8.4

Comfort

8.3

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
Thai Airways
7.8
Good
316 reviews
EVA Air
8.4
Very Good
1,170 reviews
Check prices

Entertainment

8.0

Food

8.0

Boarding

8.4

Crew

8.6

Overall

8.4

Comfort

8.3

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
Cathay Pacific
7.5
Good
832 reviews
EVA Air
8.4
Very Good
1,170 reviews
Check prices

Entertainment

8.0

Food

8.0

Boarding

8.4

Crew

8.6

Overall

8.4

Comfort

8.3

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

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 £613, Malaysia Airlines will fly you from Chiang Mai to London Heathrow Airport and back. In addition to Malaysia Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from China Eastern and Air China - these airlines can fly you to your destination from £631 and £655, respectively. Users have found that Malaysia Airlines is 23% 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 £279. However, be on the lookout for offers from Malaysia Airlines 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
Croydon
Slough
Luton
Eastbourne
Northampton
Ilford
Swindon
Hayes
Crawley
Southend-on-Sea
Wembley
Maidstone
Winchester
Ipswich
Watford
Southall

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 24 March 2025.
AirlineCheapestAverageFlexibilityOn-time
Thai AirwaysCheapest£806Average£1,000FlexibilityNo 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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