Cheap flights from London to Chiang Mai from £271

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 15/10. Fares are subject to change and may not be available on all flights or dates of travel.
LON — CNX
12 Oct — 19 Oct1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from London to Chiang Mai are usually found in March or September, booked 71 days in advance, depart on a Thursday or Tuesday and return on a Monday

Cheap flight deals from London to Chiang Mai

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) 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 12 September 2025.

Round-trip from

£486

One-way from

£271

Popular in

August

Cheapest in

March

Average price

£550
China Eastern
  • China Eastern
  • 9/1-19/1
  • 5 total stops
  • 68h 10m total
  • London to Chiang Mai
Air China
  • Air China
  • 15/10
  • 1 total stop
  • 27h 15m total
  • London to Chiang Mai
Highest demand for flights based on searches. 15% potential increase in price (£95 potential increase over avg. return price).
Cheapest flight prices on average. 4% potential price decrease (£20 potential savings vs. average return price).
Average for round-trip flights in September 2025

Find flight deals from London to Chiang Mai

Cheapest flights from London to Chiang Mai
Explore the most affordable flight options available from London to Chiang Mai. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 September 2025.

Sun 2/1117:00LGW - CNX
3 stops33h 05mChina Eastern
Mon 17/1110:05CNX - LGW
3 stops27h 25mChina Eastern
Deal found 12/9£486
Wed 24/920:25LHR - CNX
1 stop19h 25mAir China
Sat 29/1123:05CNX - LHR
1 stop25h 45mAir China
Deal found 12/9£486
Sat 15/1120:25LHR - CNX
1 stop18h 25mAir China
Sun 30/1123:05CNX - LHR
1 stop25h 45mAir China
Deal found 11/9£490
Tue 4/1120:25LHR - CNX
1 stop37h 30mAir China
Wed 26/1123:05CNX - LHR
1 stop25h 45mAir China
Deal found 10/9£491
Mon 15/911:35LGW - CNX
3 stops39h 30mChina Eastern
Mon 29/910:05CNX - LGW
3 stops34h 55mChina Eastern
Deal found 10/9£492
Tue 4/1121:30LHR - CNX
2 stops61h 20mChina Southern
Tue 2/1218:50CNX - LHR
1 stop30h 45mChina Southern
Deal found 12/9£495
Tue 4/1121:30LHR - CNX
2 stops61h 20mChina Southern
Wed 3/1218:50CNX - LHR
1 stop30h 45mChina Southern
Deal found 10/9£496
Fri 24/1022:40LHR - CNX
1 stop17h 10mAir China
Fri 14/1123:05CNX - LHR
1 stop25h 45mAir China
Deal found 10/9£498
Tue 4/1120:25LHR - CNX
1 stop37h 30mAir China
Fri 28/1123:05CNX - LHR
2 stops27h 35mAir China
Deal found 10/9£500
Sun 2/1117:15LHR - CNX
2 stops41h 35mChina Southern
Tue 2/1218:50CNX - LHR
1 stop30h 45mChina Southern
Deal found 12/9£501
Sun 14/922:40LHR - CNX
1 stop17h 10mMultiple Airlines
Tue 9/1206:50CNX - LHR
2 stops33h 05mMultiple Airlines
Deal found 10/9£505
Mon 15/922:40LHR - CNX
1 stop17h 10mMultiple Airlines
Tue 9/1206:50CNX - LHR
2 stops33h 05mMultiple Airlines
Deal found 10/9£506

Cheapflights Fare Finder

 
Customise your flight search to find flights from London 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 12 September 2025.
Use the filters below to find and compare flights from London to Chiang Mai that are best for you.

Fly from

London

Fly to

Chiang Mai

Route

Depart

Return

Price

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Tue 24/2

20:55-06:05

1 stop26h 10m

Chiang Mai

Tue 3/3

08:50-18:10

1 stop16h 20m

£518

LondonChiang Mai

LGW - CNX

LGWCNX

London Gatwick

Sat 22/11

10:30-09:05

3 stops39h 35m

Chiang Mai

Sat 6/12

10:05-06:30

2 stops51h 25m

£542

LondonChiang Mai

LGW - CNX

LGWCNX

London Gatwick

Mon 3/11

17:00-09:05

2 stops33h 05m

Chiang Mai

Mon 15/12

15:35-06:30

1 stop21h 55m

£542

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Wed 11/2

14:50-21:00

2 stops23h 10m

Chiang Mai

Tue 12/5

20:00-14:20

2 stops24h 20m

£567

LondonChiang Mai

LGW - CNX

LGWCNX

London Gatwick

Fri 14/11

10:30-14:20

1 stop20h 50m

Chiang Mai

Fri 21/11

16:25-06:30

3 stops45h 05m

£567

LondonChiang Mai

STN - CNX

STNCNX

London Stansted

Wed 22/10

07:25-17:00

3 stops27h 35m

Chiang Mai

Sun 22/3

12:00-16:50

2 stops35h 50m

£571

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Fri 13/2

08:50-06:05

1 stop14h 15m

Chiang Mai

Tue 12/5

08:45-15:15

1 stop36h 30m

£598

LondonChiang Mai

LGW - CNX

LGWCNX

London Gatwick

Thu 23/10

11:35-15:20

2 stops21h 45m

Chiang Mai

Thu 26/3

15:35-06:30

1 stop21h 55m

£607

LondonChiang Mai

LGW - CNX

LGWCNX

London Gatwick

Fri 26/9

12:35-21:50

1 stop27h 15m

Chiang Mai

Fri 10/10

23:05-06:35

1 stop37h 30m

£611

LondonChiang Mai

LGW - CNX

LGWCNX

London Gatwick

Sun 8/2

11:35-21:50

1 stop27h 15m

Chiang Mai

Thu 14/5

23:05-06:35

1 stop37h 30m

£630

Flights are sorted by cheapest return flights first.

Deals found on 10/9

Showing 1-10 of 60 results
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Best time to book a flight from London to Chiang Mai

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

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

Use this chart to determine the optimal time to book a return flight from London to Chiang Mai. Price data was last updated on 29 August 2025.

To ensure you get the cheapest price possible for a flight from London to Chiang Mai, you should look to book at least 71 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, April is the cheapest month in which you can book a flight from London to Chiang Mai (average of £776). Flying from London to Chiang Mai in July is currently the most expensive (average of £1,338). 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 LON to CNX?

Find hourly flight availability from London 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 12 September 2025.

It’s optimal to fly from London to Chiang Mai in the afternoon. By choosing this option you can save up to 41% on the cost of your flight, compared to a flight at midday.

How much does it cost for a return flight from London to Chiang Mai?

What’s the top stopover airport for flights from London to Chiang Mai?

Share of one-stop return flights from London to Chiang Mai chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Bangkok (BKK) – chosen by Cheapflights users on 43% of one-stop itineraries from London to Chiang Mai on Cheapflights.

What’s the cheapest stopover airport for flights from London to Chiang Mai?

Average return fare for one-stop flights from London to Chiang Mai, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Guangzhou (CAN) is the most affordable one-stop option, with an average return flight price of £498.

What’s the fastest stopover option from London to Chiang Mai?

Shortest average travel time for one-stop one-way flights from London to Chiang Mai, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via Abu Dhabi (AUH) have the shortest average one-way travel time for one-stop routes: 14h 36m.

Which airport typically offers the quickest stopover for flights from London to Chiang Mai?

Average stopover duration for one-stop one-way flights from London to Chiang Mai, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Bangkok (BKK) offer the fastest connection on this route, with an average stopover time of 1h 48m.

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 12 September 2025.
See what other customers who have flown with EVA Air, Thai Airways, andEtihad Airways from London to Chiang Mai have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Food

8.1

Boarding

8.4

Overall

8.4

Entertainment

8.0

Crew

8.6

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

Food

8.1

Boarding

8.4

Overall

8.4

Entertainment

8.0

Crew

8.6

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

Food

8.1

Boarding

8.4

Overall

8.4

Entertainment

8.0

Crew

8.6

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

Food

8.1

Boarding

8.4

Overall

8.4

Entertainment

8.0

Crew

8.6

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

Food

8.1

Boarding

8.4

Overall

8.4

Entertainment

8.0

Crew

8.6

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

Food

8.1

Boarding

8.4

Overall

8.4

Entertainment

8.0

Crew

8.6

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

Related info for your journey

Find useful and relevant information for your journey from London 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?

    Most people fly into Chiang Mai (CNX) if they book a flight to Chiang Mai from London. On average, Chiang Mai has 0 inbound flights from London per day from 10 airlines. Chiang Mai is conveniently located just 1.9 mi from Chiang Mai’s city center.

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

    Airlines like Etihad Airways, China Eastern, and Austrian Airlines fly from London to Chiang Mai in about 23h 10m. The time it takes to get you to your destination can typically vary by up to 16h 25m. London and Chiang Mai are separated by a distance of 5598 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    China Southern, at £416, was found to be the cheapest airline from London to Chiang Mai.Alternate airlines flying return to your destination include China Eastern and Air China. China Southern is priced at 39% lower than the current average price of a flight leaving 3 months from now.

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

    To fly one-way, consider booking your trip with Air China, which is currently one of the cheapest options available, starting at £295. China Southern flights start at £299 while deals on SWISS start at £506 one-way.

  • What are the most popular routes from London to Chiang Mai?

  • Where are the most common stopover locations when flying from London to Chiang Mai?

  • What are some popular things to do or see while on a stopover in Bangkok?

    Most Bangkok visitors opt to spend their time experiencing Siam Square, Pratunam, and Thailand Cultural Center. Travelers on a layover in Bangkok can visit Siam Square, Pratunam, and Thailand Cultural Center, by traveling 15.1 mi, 14.8 mi, and 13.1 mi, respectively after landing at Bangkok Suvarnabhumi. Those on a stopover in Bangkok in need of a car hire can book one at Bangkok Suvarnabhumi for about £16.

  • Where are the least popular stopover locations for London to Chiang Mai flights?

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

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

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

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

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

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

    Currently, April is the cheapest month in which you can book a flight from London to Chiang Mai (average of £776). Flying from London to Chiang Mai in July is currently the most expensive (average of £1,338). 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 London to Chiang Mai

See prices for flight routes from nearby airports that may be better suited for you.

Top 10 airlines flying from London to Chiang Mai

Discover the top 10 airlines that operate flights from London 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 12 September 2025.
AirlineCheapestAverageFlexibilityOn-time
China SouthernCheapest£416Average£464FlexibilityNo cancel feeOn-time69%
Search China Southern flights
China EasternCheapest£450Average£534FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
Air ChinaCheapest£461Average£543FlexibilityNo cancel feeOn-time67%
Search Air China flights
Etihad AirwaysCheapest£534Average£659FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
Malaysia AirlinesCheapest£548Average£790FlexibilityNo cancel feeOn-time67%
Search Malaysia Airlines flights
Austrian AirlinesCheapest£606Average£766FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
Cathay PacificCheapest£675Average£889FlexibilityNo cancel feeOn-time72%
Search Cathay Pacific flights
EVA AirCheapest£686Average£746FlexibilityNo cancel feeOn-time74%
Search EVA Air flights
Thai AirwaysCheapest£692Average£836FlexibilityNo cancel feeOn-time77%
Search Thai Airways flights
Singapore AirlinesCheapest£717Average£914FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights

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

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

Yes, we can. To see specific flights from London to Chiang Mai with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

Of course! You can now track prices for flights from London to Chiang Mai and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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