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Cheap flights from Chiang Mai to London Heathrow Airport from £202

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 16/3. Fares are subject to change and may not be available on all flights or dates of travel.
CNX — LHR
18 Feb — 25 Feb1
1 adult
1 adult, Economy, 0 bags

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 19 January 2026.

Round-trip from

£510

One-way from

£202

Popular in

August

Cheapest in

October

Average price

£840
China Eastern
  • China Eastern
  • 4/3-11/3
  • 4 total stops
  • 61h 10m total
  • Chiang Mai to London
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16/3
  • 16/3
  • 2 total stops
  • 48h 30m total
  • Chiang Mai to London
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Highest demand for flights based on searches. 8% potential increase in price (£48 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£17 potential savings vs. average return price).
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Average for round-trip flights in January 2026
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Find 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 19 January 2026.

Wed 4/316:25
CNX
-
LHR
2 stops32h 05m
China Eastern
Wed 11/321:00
LHR
-
CNX
2 stops29h 05m
China Eastern
Deal found 18/1£510
Thu 5/316:25
CNX
-
LHR
2 stops32h 05m
Multiple Airlines
Thu 12/317:40
LHR
-
CNX
1 stop21h 10m
Multiple Airlines
Deal found 19/1£534
Thu 2/414:55
CNX
-
LHR
1 stop33h 45m
China Eastern
Sun 19/421:20
LHR
-
CNX
1 stop34h 05m
China Eastern
Deal found 18/1£578
Thu 5/216:25
CNX
-
LHR
2 stops32h 05m
China Eastern
Fri 20/206:20
LHR
-
CNX
2 stops33h 00m
China Eastern
Deal found 18/1£598
Wed 1/416:20
CNX
-
LHR
2 stops32h 20m
Multiple Airlines
Thu 30/414:45
LHR
-
CNX
1 stop33h 40m
Multiple Airlines
Deal found 18/1£602
Fri 3/414:55
CNX
-
LHR
1 stop33h 45m
Multiple Airlines
Sun 19/420:25
LHR
-
CNX
1 stop19h 25m
Multiple Airlines
Deal found 18/1£604
Thu 2/422:30
CNX
-
LHR
2 stops25h 50m
Multiple Airlines
Sun 19/411:00
LHR
-
CNX
1 stop18h 40m
Multiple Airlines
Deal found 18/1£614

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 19 January 2026.
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

Wed 4/3

16:25-17:30

2 stops32h 05m

London Heathrow

Wed 11/3

21:00-09:05

2 stops29h 05m

£510

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Thu 5/3

16:25-17:30

2 stops32h 05m

London Heathrow

Thu 12/3

17:40-21:50

1 stop21h 10m

£534

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Thu 2/4

14:55-18:40

1 stop33h 45m

London Heathrow

Sun 19/4

21:20-13:25

1 stop34h 05m

£578

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Thu 5/2

16:25-17:30

2 stops32h 05m

London Heathrow

Fri 20/2

06:20-22:20

2 stops33h 00m

£598

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Fri 3/4

14:55-18:40

1 stop33h 45m

London Heathrow

Sun 19/4

20:25-21:50

1 stop19h 25m

£604

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Thu 2/4

23:05-17:40

1 stop24h 35m

London Heathrow

Sun 19/4

20:25-21:50

1 stop19h 25m

£626

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Thu 5/2

16:25-17:30

2 stops32h 05m

London Heathrow

Fri 20/2

08:50-06:10

1 stop14h 20m

£633

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Wed 1/4

14:55-18:40

1 stop33h 45m

London Heathrow

Thu 30/4

14:45-06:25

1 stop33h 40m

£645

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Mon 16/3

22:50-16:20

2 stops48h 30m

£202

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Thu 5/2

06:50-17:35

3 stops41h 45m

£218

Flights are sorted by cheapest return flights first.

Deals found on 17/1

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

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 45% 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.

Guangzhou (CAN) is the most affordable one-stop option, with an average return flight price of £489.

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 Bangkok (BKK) have the shortest average one-way travel time for one-stop routes: 16h 16m.

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 Abu Dhabi (AUH) offer the fastest connection on this route, with an average stopover time of 2h 05m.

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 19 January 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
1,373 reviews
Check prices

Overall

7.3

Comfort

7.3

Crew

7.8

Boarding

7.6

Entertainment

7.2

Food

7.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jan 2026

AMD - AUH

My experience with etihad was extremely worst. I was going to fly on december 25 2025, but as I had severe surgery few days back before my travel date so I wasn’t been able to get on my flight. I even contact customer care for extension date request or money back so that I could book another flight by providing doctors certificate mentioning my condition, but nobody helped me in either of the request. I didn’t expect this type of service from etihad at all.
Etihad Airways
7.3
Good
1,373 reviews
Etihad Airways
7.3
Good
1,373 reviews
Check prices

Overall

7.3

Comfort

7.3

Crew

7.8

Boarding

7.6

Entertainment

7.2

Food

7.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jan 2026

AMD - AUH

My experience with etihad was extremely worst. I was going to fly on december 25 2025, but as I had severe surgery few days back before my travel date so I wasn’t been able to get on my flight. I even contact customer care for extension date request or money back so that I could book another flight by providing doctors certificate mentioning my condition, but nobody helped me in either of the request. I didn’t expect this type of service from etihad at all.
Air China
7.2
Good
138 reviews
Etihad Airways
7.3
Good
1,373 reviews
Check prices

Overall

7.3

Comfort

7.3

Crew

7.8

Boarding

7.6

Entertainment

7.2

Food

7.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jan 2026

AMD - AUH

My experience with etihad was extremely worst. I was going to fly on december 25 2025, but as I had severe surgery few days back before my travel date so I wasn’t been able to get on my flight. I even contact customer care for extension date request or money back so that I could book another flight by providing doctors certificate mentioning my condition, but nobody helped me in either of the request. I didn’t expect this type of service from etihad at all.

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?

    China Eastern can get you from Chiang Mai to London Heathrow Airport in just under 32h 05m. Your travel time can differ by up to . The distance from Chiang Mai to London Heathrow Airport is about 5598 mi.

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

    Currently priced at £513, 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 £568.

  • 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
Luton
Croydon
Northampton
Wembley
Gatwick
Slough
Hounslow
Ilford
Brentford
Hayes
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Watford
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Bedford
Kingston upon Thames
Chelmsford
Eastbourne
Romford

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 19 January 2026.
AirlineCheapestAverageFlexibilityOn-time
Air ChinaCheapest£513Average£551FlexibilityNo cancel feeOn-time67%
Search Air China flights
Etihad AirwaysCheapest£568Average£666FlexibilityNo 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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