LHR - CNX

£259 Find Cheap Flights from London Heathrow Airport to Chiang Mai – Compare and Save

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Everything you should know

Cheapest return flight
£381
Typical prices: £591-£911
Air China
Sat 29/9Fri 12/10
LHR - CNX • 1 stop
Cheapest one-way flight
£259
Typical prices: £351-£579
Multiple Airlines
Thu 27/9
LHR - CNX • 2 stops
Direct flights
Not available
There are currently no direct flights between London Heathrow Airport and Chiang Mai. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to book
15 weeks
in advance
Our data shows that travellers who book at least 15 weeks in advance save around 11% compared to booking last minute.
Insights
Insights
When to travel
May
Cheapest • 21% price drop
December
Most popular
Good to know
+1
Good to know
+1
Top stopover airports
Shanghai Pu Dong (PVG)
Cheapest • Avg £506 (return)
Bangkok Suvarnabhumi (BKK)
Shortest trip • 16h 04m (one-way)
Insights
Insights
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We hope you enjoy your trip to Chiang Mai!
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Flight Deals

Cheap Flights from Heathrow to Chiang Mai (LHR-CNX)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Heathrow to Chiang Mai

Tue, 29 Sep - Mon, 12 Oct
Air China Logo
22:40 - 21:50LHR  London Heathrow-CNX Chiang Mai
17h 10m1 stop Beijing Capital
Air China Logo
23:05 - 20:25CNX  Chiang Mai-LHR London Heathrow
27h 20m1 stop Beijing Capital
£381Air China
Tue, 29 Sep - Wed, 9 Dec
Air China Logo
22:40 - 21:50LHR  London Heathrow-CNX Chiang Mai
17h 10m1 stop Beijing Capital
Air China Logo
23:05 - 15:55CNX  Chiang Mai-LHR London Heathrow
23h 50m1 stop Beijing Capital
£381Air China
Mon, 7 Dec - Sun, 27 Dec
China Eastern Logo
21:00 - 14:20LHR  London Heathrow-CNX Chiang Mai
34h 20m1 stop Shanghai Pu Dong
China Eastern Logo
15:35 - 17:30CNX  Chiang Mai-LHR London Heathrow
32h 55m1 stop Shanghai Pu Dong
£437China Eastern
Mon, 9 Nov - Wed, 18 Nov
China Eastern Logo
21:00 - 14:20LHR  London Heathrow-CNX Chiang Mai
34h 20m1 stop Shanghai Pu Dong
China Eastern Logo
15:35 - 17:30CNX  Chiang Mai-LHR London Heathrow
32h 55m1 stop Shanghai Pu Dong
£437China Eastern
Sun, 25 Oct - Sat, 7 Nov
Multiple Airlines Logo
21:00 - 14:20LHR  London Heathrow-CNX Chiang Mai
34h 20m1 stop Shanghai Pu Dong
Multiple Airlines Logo
09:10 - 12:05CNX  Chiang Mai-LHR London Heathrow
33h 55m1 stop Abu Dhabi Zayed Intl
£487Multiple Airlines
Wed, 28 Oct - Wed, 4 Nov
Multiple Airlines Logo
21:00 - 14:20LHR  London Heathrow-CNX Chiang Mai
34h 20m1 stop Shanghai Pu Dong
Multiple Airlines Logo
09:10 - 12:05CNX  Chiang Mai-LHR London Heathrow
33h 55m1 stop Abu Dhabi Zayed Intl
£490Multiple Airlines
Mon, 12 Oct - Tue, 27 Oct
Etihad Airways Logo
21:45 - 09:20LHR  London Heathrow-CNX Chiang Mai
29h 35m2 stops Abu Dhabi Zayed Intl Bangkok Suvarnabhumi
Etihad Airways Logo
09:10 - 06:40CNX  Chiang Mai-LHR London Heathrow
28h 30m1 stop Abu Dhabi Zayed Intl
£548Etihad Airways
Sun, 11 Oct - Tue, 27 Oct
Etihad Airways Logo
21:45 - 09:20LHR  London Heathrow-CNX Chiang Mai
29h 35m2 stops Abu Dhabi Zayed Intl Bangkok Suvarnabhumi
Etihad Airways Logo
09:10 - 06:40CNX  Chiang Mai-LHR London Heathrow
28h 30m1 stop Abu Dhabi Zayed Intl
£549Etihad Airways
Wed, 3 Feb - Mon, 15 Feb
Austrian Airlines Logo
14:50 - 19:00LHR  London Heathrow-CNX Chiang Mai
21h 10m2 stops Vienna Intl Bangkok Suvarnabhumi
Austrian Airlines Logo
10:10 - 21:40CNX  Chiang Mai-LHR London Heathrow
18h 30m2 stops Bangkok Suvarnabhumi Vienna Intl
£653Austrian Airlines
Mon, 1 Feb - Mon, 15 Feb
Austrian Airlines Logo
19:25 - 19:00LHR  London Heathrow-CNX Chiang Mai
16h 35m2 stops Vienna Intl Bangkok Suvarnabhumi
Austrian Airlines Logo
10:10 - 21:40CNX  Chiang Mai-LHR London Heathrow
18h 30m2 stops Bangkok Suvarnabhumi Vienna Intl
£653Austrian Airlines
Booking Insights

Price, demand, and travel trends for London Heathrow Airport to Chiang Mai flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights from London Heathrow Airport to Chiang Mai with more confidence.

How much is a return flight from London Heathrow Airport to Chiang Mai?

Return flights from London Heathrow Airport to Chiang Mai start at £381. Prices are below average for this route right now, with typical return fares ranging from £591 to £911. The lowest price found in the past 5 days was £381 on Air China.

What's the cheapest day of the week to fly from London Heathrow Airport to Chiang Mai?

Wednesday is the cheapest day of the week to fly from London Heathrow Airport to Chiang Mai and is 11% cheaper than the average day. Sunday is the most expensive day with flight prices 3% higher than average. Based on deals found by KAYAK users in the last 12 months.

What is the cheapest month to fly from London Heathrow Airport to Chiang Mai?

  • May is the cheapest month to fly from London Heathrow Airport to Chiang Mai at £591 return.
  • December (£985) and July (£978) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 66% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are prices from London Heathrow Airport to Chiang Mai the cheapest?

Flights from London Heathrow Airport to Chiang Mai are cheapest 15 weeks before departure. Booking in this window typically costs about 11% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

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Key details for London Heathrow Airport to Chiang Mai flights

Low season

August

Cheapest flight

£259
Best time to beat the crowds but there is an average 20% increase in price.
Most popular time to fly (32% more expensive on average)
Flights from London Heathrow Airport to Chiang Mai

When to book flights from Heathrow to Chiang Mai

Are your dates flexible? Find out the best times to travel from Heathrow to Chiang Mai based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

Your London Heathrow Airport to Chiang Mai flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines, and booking questions.

  • Which airports can I use when flying from London Heathrow Airport to Chiang Mai?

    Flights from London Heathrow Airport to Chiang Mai usually depart from London Heathrow (LHR) and arrive at Chiang Mai (CNX).

  • Which cabin classes can I book on flights from London Heathrow Airport to Chiang Mai?

    Three cabin classes are available on flights from London Heathrow Airport to Chiang Mai:

    • Economy class
    • Premium Economy Class
    • Business Class

  • Which airports do connecting flights from London Heathrow Airport to Chiang Mai pass through?

    One-stop flights from London Heathrow Airport to Chiang Mai most commonly connect through:

    • Bangkok Suvarnabhumi (BKK) – 44% of one-stop connections
    • Abu Dhabi Zayed Intl (AUH) – 27% of one-stop connections
    • Beijing Capital (PEK) – 20% of one-stop connections
    • Kuala Lumpur Intl (KUL) – 3% of one-stop connections

    Bangkok Suvarnabhumi (BKK) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from London Heathrow Airport to Chiang Mai?

    Yes. Being flexible with your travel dates can save you up to 14% on the London Heathrow Airport to Chiang Mai route. Wednesday is the cheapest departure day at £665 return on average, while Sunday is the most expensive at £773, a difference of £107. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What popular places can I visit in Chiang Mai?

    Some of the most popular sights in Chiang Mai are Chiang Mai Night Bazaar, Suan Dok Gate, and Sunday Walking Street Market. These are among the most viewed places in Chiang Mai on KAYAK.

  • How expensive are last-minute London Heathrow Airport to Chiang Mai flights?

    Last-minute fares on this route (booked within 2 weeks of departure) run 4% above the route average of £745. Book 15 weeks before departure for the lowest fares.

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

    A direct flight from London Heathrow Airport to Chiang Mai takes 0h 00m, covering 5,598 miles.

  • Do I need a passport to fly from London Heathrow Airport to Chiang Mai?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How are flight prices from London Heathrow Airport to Chiang Mai looking right now?

    One-way fares from London Heathrow Airport to Chiang Mai are currently lower than usual. Average one-way flight prices are about £388, which is 17% below the typical average for this route.

  • How much time can I save by choosing a different stopover airport from London Heathrow Airport to Chiang Mai?

    Flying via Bangkok Suvarnabhumi (BKK) gives the shortest average 1-stop total travel time of 16h 04m, compared to 16h 11m via Abu Dhabi Zayed Intl (AUH) and 20h 32m via Hong Kong Intl (HKG).

  • What is the time difference between London Heathrow Airport and Chiang Mai?

    Chiang Mai is 6 hours ahead of London Heathrow Airport (Indochina Time vs British Time). Plan for the time shift when scheduling connections or first-day activities.

  • Which car hire options are available at Chiang Mai Airport (CNX)?

    Chiang Mai Airport (CNX) hosts 5 major car hire companies, with daily rates starting from around £9 for economy cars. Top options include:
    • Drive Car Rental
    • Alamo
    • Sixt
    • Hertz
    • Yesaway

  • How much should I expect to pay for a London Heathrow Airport to Chiang Mai flight?

    Return flights from London Heathrow Airport to Chiang Mai range from £591 to £911, with an average of £745 over the past 12 months. Anything below £591 counts as a good deal.

Your guide to booking London Heathrow Airport to Chiang Mai flights

Get tips on when to book, when to fly, and what to know before your trip.
  • If your dates are flexible, aim for a Wednesday departure instead of Sunday. On this route, Wednesday flights average £665 – about £107 less than Sunday (14% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 15 weeks before you fly. On this route, that window historically saves about 11% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your London Heathrow Airport to Chiang Mai trip for May. Fares historically average £591 return in that month – typically £393 less than the most expensive month, which is December (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Chiang Mai Airport.
    - Le Naview @Prasingh
    - Bodhi Serene, Chiang Mai
    - 99 The Gallery Hotel

More options for your flight from Heathrow to Chiang Mai

Complete your trip to Chiang Mai with a hotel stay or car hire

Car hire in Chiang Mai
Hotels in Chiang Mai
Holidays in Chiang Mai