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Cheap flights from Chiang Mai to London Heathrow Airport 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 2/7. Fares are subject to change and may not be available on all flights or dates of travel.
CNX — LHR
2 May — 9 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Chiang Mai to Heathrow

Enter your travel dates to find the best prices.

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 2 April 2026.

Fri 15/517:45
CNX
-
LHR
2 stops27h 20m
Multiple Airlines
Fri 29/520:45
LHR
-
CNX
2 stops19h 05m
Multiple Airlines
Deal found 1/4£478
Sat 16/511:50
CNX
-
LHR
2 stops25h 10m
Multiple Airlines
Sat 23/509:30
LHR
-
CNX
2 stops31h 20m
Multiple Airlines
Deal found 1/4£493
Thu 4/623:05
CNX
-
LHR
1 stop24h 35m
Air China
Mon 8/622:40
LHR
-
CNX
1 stop17h 10m
Air China
Deal found 29/3£654
Wed 13/510:05
CNX
-
LHR
3 stops62h 35m
China Eastern
Wed 20/514:45
LHR
-
CNX
2 stops40h 40m
China Eastern
Deal found 29/3£675
Mon 4/510:10
CNX
-
LHR
2 stops26h 45m
Multiple Airlines
Mon 25/522:40
LHR
-
CNX
1 stop17h 10m
Multiple Airlines
Deal found 28/3£693
Thu 14/516:10
CNX
-
LHR
2 stops32h 30m
Multiple Airlines
Thu 21/509:00
LHR
-
CNX
2 stops28h 10m
Multiple Airlines
Deal found 30/3£720
Thu 30/408:25
CNX
-
LHR
2 stops29h 10m
Multiple Airlines
Thu 7/509:30
LHR
-
CNX
2 stops24h 25m
Multiple Airlines
Deal found 2/4£730
Sat 25/421:05
CNX
-
LHR
2 stops46h 25m
Multiple Airlines
Sat 2/514:45
LHR
-
CNX
2 stops26h 05m
Multiple Airlines
Deal found 28/3£736

Find 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 2 April 2026.

Round-trip from

£478

One-way from

£271

Popular in

April

Cheapest in

October

Average price

£1,179
15/5-29/5
  • 15/5-29/5
  • 4 total stops
  • 46h 25m total
  • Chiang Mai to London
Search Deals
2/7
  • 2/7
  • 3 total stops
  • 41h 15m total
  • Chiang Mai to London
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£114 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (£36 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

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 2 April 2026.
Use the filters below to find and compare flights from Chiang Mai to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Thu 4/6

10:10-07:05

2 stops26h 55m

London Heathrow

Mon 8/6

09:05-19:10

2 stops28h 05m

£814
Fastest return journey

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Thu 7/5

20:00-12:25

2 stops22h 25m

London Heathrow

Thu 21/5

16:50-19:10

2 stops20h 20m

£852

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Tue 14/4

10:10-19:10

2 stops39h 00m

London Heathrow

Fri 24/4

08:25-11:15

2 stops20h 50m

£862

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Tue 14/4

10:10-19:10

2 stops39h 00m

London Heathrow

Sat 25/4

08:25-13:45

2 stops23h 20m

£862

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Thu 23/7

23:05-17:40

1 stop24h 35m

London Heathrow

Mon 27/7

20:25-21:50

1 stop19h 25m

£868

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Thu 30/4

20:00-16:10

2 stops26h 10m

London Heathrow

Wed 14/10

16:50-19:10

2 stops20h 20m

£880

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Thu 30/4

11:55-19:10

2 stops37h 15m

London Heathrow

Wed 14/10

20:50-19:10

2 stops40h 20m

£889

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Fri 15/5

14:55-18:40

1 stop33h 45m

London Heathrow

Sun 31/5

21:20-13:25

1 stop34h 05m

£890

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Thu 23/7

20:00-14:25

2 stops24h 25m

London Heathrow

Mon 27/7

20:40-11:15

2 stops32h 35m

£951
Cheapest one-way

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Thu 9/7

14:40-16:35

1 stop31h 55m

£339

Flights are sorted by cheapest return flights first.

Deals found on 30/3

Showing 1-10 of 15 resultsSorted by cheapest first
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

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

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

Bangkok (BKK) – chosen by Cheapflights users on 52% of one-stop itineraries from Chiang Mai to London Heathrow Airport on Cheapflights.

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

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

Kuala Lumpur (KUL) is the most affordable one-stop option, with an average return flight price of £623.

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

Shortest average travel time for one-stop one-way flights from Chiang Mai to London Heathrow Airport, 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: 16h 18m.

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

Average stopover duration for one-stop one-way flights from Chiang Mai to London Heathrow Airport, 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 2h 03m.

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 2 April 2026.
See what other customers who have flown with Etihad Airways and Air China from Chiang Mai to London Heathrow Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Etihad Airways
7.3
Good
1,432 reviews
Check prices

Boarding

7.6

Food

7.2

Overall

7.3

Entertainment

7.2

Crew

7.8

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Gwendolyn,Mar 2026

AUH - ATL

Flight was very cold. Everyone was using blankets. New plane did not allow passenger ability to shut off AC at their seat. Special assistance was wonderful.
Etihad Airways
7.3
Good
1,432 reviews
Etihad Airways
7.3
Good
1,432 reviews
Check prices

Boarding

7.6

Food

7.2

Overall

7.3

Entertainment

7.2

Crew

7.8

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Gwendolyn,Mar 2026

AUH - ATL

Flight was very cold. Everyone was using blankets. New plane did not allow passenger ability to shut off AC at their seat. Special assistance was wonderful.
Air China
7.3
Good
145 reviews
Etihad Airways
7.3
Good
1,432 reviews
Check prices

Boarding

7.6

Food

7.2

Overall

7.3

Entertainment

7.2

Crew

7.8

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Gwendolyn,Mar 2026

AUH - ATL

Flight was very cold. Everyone was using blankets. New plane did not allow passenger ability to shut off AC at their seat. Special assistance was wonderful.

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 2 different airlines.

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

    Emirates and Oman Air can get you from Chiang Mai to London Heathrow Airport in just under 26h 55m. Your travel time can differ by up to 12h 05m. The distance from Chiang Mai to London Heathrow Airport is about 5598 mi. Both multi-stop and direct flights can be found to your destination and back.

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

    Currently priced at £517, Air China will fly you from Chiang Mai to London Heathrow Airport and back. In addition to Air China, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on Etihad Airways for as low as £572.

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

    The cheapest airline one-way is Etihad Airways, with whom users have recently found tickets for as low as £192. However, be on the lookout for offers from Air China and Thai Airways, 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.

See more FAQs

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Wembley
Croydon
Northampton
Hounslow
Gatwick
Slough
Ilford
Luton
Hayes
Brentford
Colchester
Guildford
Watford
Kingston upon Thames
Romford
Eastbourne
Swindon
Bedford
Chelmsford

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 2 airlines flying from Chiang Mai to Heathrow

Discover the top 2 airlines 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 2 April 2026.
AirlineCheapestAverageFlexibilityOn-time
Air ChinaCheapest£517Average£555FlexibilityNo cancel feeOn-time67%
Search Air China flights
Etihad AirwaysCheapest£572Average£669FlexibilityNo cancel feeOn-time75%
Search Etihad 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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