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Cheap flights from Chiang Mai to London from £274

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chiang Mai to London departing on 5/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Chiang Mai to London

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
09:10 - 18:10
CNX
-
LHR
16h 00m
1 stop
Multiple Airlines Logo
21:00 - 14:20
LHR
-
CNX
34h 20m
1 stop
£601Multiple Airlines
Sel, 3 Nov - Sel, 17 Nov
Multiple Airlines Logo
09:10 - 18:10
CNX
-
LHR
16h 00m
1 stop
Multiple Airlines Logo
21:00 - 09:05
LHR
-
CNX
29h 05m
2 stops
£606Multiple Airlines
Sel, 3 Nov - Sel, 17 Nov
Multiple Airlines Logo
19:35 - 19:20
CNX
-
LHR
29h 45m
2 stops
Multiple Airlines Logo
20:50 - 13:25
LHR
-
CNX
34h 35m
2 stops
£609Multiple Airlines
Rab, 19 Ags - Rab, 26 Ags
Multiple Airlines Logo
13:55 - 17:45
CNX
-
LHR
33h 50m
2 stops
Multiple Airlines Logo
22:40 - 21:50
LHR
-
CNX
17h 10m
1 stop
£612Multiple Airlines
Rab, 12 Ags - Sen, 7 Sep
Multiple Airlines Logo
13:55 - 17:45
CNX
-
LHR
33h 50m
2 stops
Multiple Airlines Logo
22:40 - 21:50
LHR
-
CNX
17h 10m
1 stop
£613Multiple Airlines
Rab, 12 Ags - Sen, 7 Sep
Multiple Airlines Logo
13:55 - 17:45
CNX
-
LHR
33h 50m
2 stops
Multiple Airlines Logo
22:40 - 21:50
LHR
-
CNX
17h 10m
1 stop
£619Multiple Airlines
Rab, 12 Ags - Sen, 7 Sep
Multiple Airlines Logo
20:00 - 15:05
CNX
-
LHR
25h 05m
2 stops
Multiple Airlines Logo
21:20 - 13:25
LHR
-
CNX
34h 05m
1 stop
£626Multiple Airlines
Min, 20 Sep - Kam, 24 Sep
Multiple Airlines Logo
18:50 - 19:20
CNX
-
LHR
30h 30m
1 stop
Multiple Airlines Logo
20:25 - 21:50
LHR
-
CNX
19h 25m
1 stop
£629Multiple Airlines
Rab, 12 Ags - Sen, 7 Sep
Multiple Airlines Logo
19:35 - 19:20
CNX
-
LHR
29h 45m
2 stops
Multiple Airlines Logo
22:40 - 21:50
LHR
-
CNX
17h 10m
1 stop
£640Multiple Airlines
Rab, 19 Ags - Rab, 26 Ags
Multiple Airlines Logo
13:15 - 18:40
CNX
-
LHR
35h 25m
2 stops
Multiple Airlines Logo
22:40 - 21:50
LHR
-
CNX
17h 10m
1 stop
£641Multiple Airlines
Sen, 10 Ags - Sen, 7 Sep

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Etihad Airways flights from Chiang Mai to London Heathrow Airport

Our best Etihad Airways deals on Chiang Mai to London Heathrow Airport flight tickets
Etihad Airways
20 Sept
CNX20:00Chiang Mai
25h 05m
2 stops
LHR15:05London Heathrow
24 Sept
LHR21:45London Heathrow
31h 30m
2 stops
CNX11:15Chiang Mai
£656
Etihad Airways
6 Sept
CNX11:55Chiang Mai
30h 50m
2 stops
LHR12:45London Heathrow
28 Sept
LHR09:30London Heathrow
27h 40m
2 stops
CNX19:10Chiang Mai
£728
Etihad Airways
14 Sept
CNX11:55Chiang Mai
25h 05m
2 stops
LHR07:00London Heathrow
16 Sept
LHR14:45London Heathrow
22h 25m
2 stops
CNX19:10Chiang Mai
£733

China Eastern flights from Chiang Mai to London Heathrow Airport

Our best China Eastern deals on Chiang Mai to London Heathrow Airport flight tickets
China Eastern
11 Aug
CNX00:30Chiang Mai
24h 10m
1 stop
LHR18:40London Heathrow
5 Sept
LHR21:20London Heathrow
34h 05m
1 stop
CNX13:25Chiang Mai
£735
China Eastern
12 Aug
CNX10:05Chiang Mai
38h 35m
3 stops
LHR18:40London Heathrow
5 Sept
LHR21:20London Heathrow
53h 55m
2 stops
CNX09:15Chiang Mai
£816
China Eastern
12 Aug
CNX10:05Chiang Mai
38h 35m
3 stops
LHR18:40London Heathrow
7 Sept
LHR21:20London Heathrow
52h 50m
3 stops
CNX08:10Chiang Mai
£817

momondo Fare Finder

 
Customise your flight search to find flights from Chiang Mai to London Heathrow Airport 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, momondo users made 279,928 searches. Data last updated 24 Juli 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

Sel 3/11

09:10-18:10

1 stop16h 00m

London Heathrow

Sel 17/11

21:00-14:20

1 stop34h 20m

£601
Fastest return journey

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Sel 3/11

09:10-18:10

1 stop16h 00m

London Heathrow

Sel 17/11

21:00-09:05

2 stops29h 05m

£606

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Rab 19/8

19:35-19:20

2 stops29h 45m

London Heathrow

Rab 26/8

20:50-13:25

2 stops34h 35m

£609

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Rab 12/8

13:55-17:45

2 stops33h 50m

London Heathrow

Sen 7/9

22:40-21:50

1 stop17h 10m

£612

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Rab 12/8

13:55-17:45

2 stops33h 50m

London Heathrow

Sen 7/9

22:40-21:50

1 stop17h 10m

£613

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Rab 12/8

13:55-17:45

2 stops33h 50m

London Heathrow

Sen 7/9

22:40-21:50

1 stop17h 10m

£619

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Min 20/9

20:00-15:05

2 stops25h 05m

London Heathrow

Kam 24/9

21:20-13:25

1 stop34h 05m

£626

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Rab 12/8

18:50-19:20

1 stop30h 30m

London Heathrow

Sen 7/9

20:25-21:50

1 stop19h 25m

£629

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Rab 19/8

19:35-19:20

2 stops29h 45m

London Heathrow

Rab 26/8

22:40-21:50

1 stop17h 10m

£640

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Sen 10/8

13:15-18:40

2 stops35h 25m

London Heathrow

Sen 7/9

22:40-21:50

1 stop17h 10m

£641

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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2

See travel insights to London from

How to get the cheapest flight ticket from Chiang Mai to London Heathrow Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Can stopping save me money on Chiang Mai to London Heathrow Airport flights?

You could potentially save up to 4% on your flight if you consider stops on a Chiang Mai to London Heathrow Airport flight.

How have Chiang Mai to London Heathrow Airport flight prices changed over time?

When to book flights from Chiang Mai to London Heathrow Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Chiang Mai to London Heathrow Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Chiang Mai to London Heathrow Airport (CNX to LHR) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chiang Mai to London Heathrow Airport

Fastest flight time

25h 05m

Direct flights

None
The fastest flight from Chiang Mai to London Heathrow Airport takes 25h 05m
There are no direct flights from Chiang Mai to London Heathrow Airport. There are no popular flight routes from Chiang Mai to London Heathrow Airport.
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Frequently asked questions about flying from Chiang Mai to London Heathrow Airport

  • How far is Chiang Mai to London Heathrow by plane?

    Chiang Mai and London Heathrow are 5597.7 mi apart from one another. In terms of flight time, this usually takes a little over 25h 05m.

  • When did momondo last update prices for flights from Chiang Mai Airport to London Heathrow Airport?

    Prices for flights from Chiang Mai Airport to London Heathrow Airport are updated daily.

  • How many operators does momondo search for flights from Chiang Mai Airport to London Heathrow Airport?

  • How old do you have to be to fly from Chiang Mai Airport to London Heathrow Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chiang Mai Airport to London Heathrow Airport.

  • What documentation or ID do you need to fly to London Heathrow Airport?

    The travel and health documents you'll need for your trip to London Heathrow Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Heathrow Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Chiang Mai to London Heathrow Airport?

Best airlines flying from Chiang Mai to London Heathrow Airport

Compare and see reviews for airlines that fly from Chiang Mai to London Heathrow Airport with momondo
Airline
Rating
Free Cancellation
Price
Air ChinaPriceFrom £514Free CancellationRating
7.4
156 reviews
Search Air China flights
Etihad AirwaysPriceFrom £569Free CancellationRating
7.3
1,486 reviews
Search Etihad Airways flights

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Why use momondo?

Why should I use momondo to find a flight deal from Chiang Mai to London?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Chiang Mai to London. momondo saves you time and could save you money on your trip.

Can I find flights from Chiang Mai to London with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to London from Chiang Mai with this policy.

How can momondo help me find flights from Chiang Mai to London?

Once you have performed a search for Chiang Mai to London flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Chiang Mai to London right now. Can momondo alert me if prices change?

Price alerts on flights to London from Chiang Mai are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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