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Cheap flights from Chiang Mai to London from £255

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 16/5. 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
0 bags

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Find the cheapest flights from Chiang Mai to London

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
13:10 - 18:45
CNX
-
LHR
35h 35m
3 stops
Multiple Airlines Logo
16:15 - 17:15
LHR
-
CNX
19h 00m
2 stops
£638Multiple Airlines
Mon, 1 Jun - Mon, 8 Jun
Multiple Airlines Logo
11:55 - 15:20
CNX
-
LHR
33h 25m
2 stops
Multiple Airlines Logo
22:40 - 21:50
LHR
-
CNX
17h 10m
1 stop
£659Multiple Airlines
Tue, 8 Sep - Mon, 21 Sep
Multiple Airlines Logo
13:40 - 19:30
CNX
-
LHR
35h 50m
2 stops
Multiple Airlines Logo
10:00 - 23:25
LHR
-
CNX
31h 25m
2 stops
£694Multiple Airlines
Sun, 10 May - Sat, 13 Jun
Multiple Airlines Logo
06:35 - 18:45
CNX
-
LHR
18h 10m
2 stops
Multiple Airlines Logo
16:15 - 17:15
LHR
-
CNX
19h 00m
2 stops
£694Multiple Airlines
Mon, 1 Jun - Mon, 8 Jun
Multiple Airlines Logo
23:05 - 17:40
CNX
-
LHR
24h 35m
1 stop
Multiple Airlines Logo
16:00 - 16:15
LHR
-
CNX
18h 15m
2 stops
£737Multiple Airlines
Tue, 12 May - Tue, 19 May
Multiple Airlines Logo
13:40 - 19:30
CNX
-
LHR
35h 50m
2 stops
Multiple Airlines Logo
19:55 - 12:30
LHR
-
CNX
34h 35m
3 stops
£738Multiple Airlines
Sun, 10 May - Sat, 13 Jun
Multiple Airlines Logo
07:00 - 18:45
CNX
-
LHR
17h 45m
2 stops
Multiple Airlines Logo
21:45 - 22:00
LHR
-
CNX
18h 15m
2 stops
£745Multiple Airlines
Thu, 4 Jun - Thu, 4 Jun
Multiple Airlines Logo
16:55 - 08:00
CNX
-
LHR
21h 05m
2 stops
Multiple Airlines Logo
09:30 - 11:15
LHR
-
CNX
19h 45m
2 stops
£757Multiple Airlines
Tue, 12 May - Tue, 19 May
Multiple Airlines Logo
23:05 - 20:25
CNX
-
LHR
27h 20m
1 stop
Multiple Airlines Logo
21:20 - 13:25
LHR
-
CNX
34h 05m
1 stop
£763Multiple Airlines
Tue, 12 May - Tue, 19 May
Multiple Airlines Logo
14:40 - 05:55
CNX
-
LHR
21h 15m
1 stop
Multiple Airlines Logo
22:40 - 21:50
LHR
-
CNX
17h 10m
1 stop
£773Multiple Airlines
Tue, 8 Sep - Wed, 23 Sep

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Oman Air flights from Chiang Mai to London Heathrow Airport

Our best Oman Air deals on Chiang Mai to London Heathrow Airport flight tickets
Oman Air
7 Sept
CNX12:35Chiang Mai
36h 35m
2 stops
LHR19:10London Heathrow
20 Sept
LHR08:25London Heathrow
21h 15m
2 stops
CNX11:40Chiang Mai
£777
Oman Air
15 May
CNX12:35Chiang Mai
23h 55m
2 stops
LHR06:30London Heathrow
31 May
LHR08:25London Heathrow
21h 15m
2 stops
CNX11:40Chiang Mai
£794
Oman Air
15 May
CNX12:35Chiang Mai
23h 55m
2 stops
LHR06:30London Heathrow
31 May
LHR08:25London Heathrow
21h 15m
2 stops
CNX11:40Chiang Mai
£796

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
12 May
CNX16:10Chiang Mai
56h 30m
3 stops
LHR18:40London Heathrow
19 May
LHR21:20London Heathrow
29h 55m
2 stops
CNX09:15Chiang Mai
£817
China Eastern
10 May
CNX16:10Chiang Mai
56h 30m
2 stops
LHR18:40London Heathrow
17 May
LHR21:20London Heathrow
34h 05m
1 stop
CNX13:25Chiang Mai
£856
China Eastern
10 May
CNX16:10Chiang Mai
56h 30m
2 stops
LHR18:40London Heathrow
17 May
LHR21:20London Heathrow
29h 55m
3 stops
CNX09:15Chiang Mai
£861

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 19 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

Mon 1/6

13:10-18:45

3 stops35h 35m

London Heathrow

Mon 8/6

16:15-17:15

2 stops19h 00m

£638

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Tue 8/9

11:55-15:20

2 stops33h 25m

London Heathrow

Mon 21/9

22:40-21:50

1 stop17h 10m

£659

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Sun 10/5

13:40-19:30

2 stops35h 50m

London Heathrow

Sat 13/6

10:00-23:25

2 stops31h 25m

£694

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Mon 1/6

06:35-18:45

2 stops18h 10m

London Heathrow

Mon 8/6

16:15-17:15

2 stops19h 00m

£694

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Tue 12/5

23:05-17:40

1 stop24h 35m

London Heathrow

Tue 19/5

16:00-16:15

2 stops18h 15m

£737

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Sun 10/5

13:40-19:30

2 stops35h 50m

London Heathrow

Sat 13/6

19:55-12:30

3 stops34h 35m

£738
Fastest return journey

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Thu 4/6

07:00-18:45

2 stops17h 45m

London Heathrow

Thu 4/6

21:45-22:00

2 stops18h 15m

£745

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Tue 12/5

16:55-08:00

2 stops21h 05m

London Heathrow

Tue 19/5

09:30-11:15

2 stops19h 45m

£757

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Tue 12/5

23:05-20:25

1 stop27h 20m

London Heathrow

Tue 19/5

21:20-13:25

1 stop34h 05m

£763

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Tue 8/9

14:40-05:55

1 stop21h 15m

London Heathrow

Wed 23/9

22:40-21:50

1 stop17h 10m

£773

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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 12% 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

22h 25m

Direct flights

None
The fastest flight from Chiang Mai to London Heathrow Airport takes 22h 25m
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 22h 25m.

  • 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 £508Free CancellationRating
7.3
146 reviews
Search Air China flights
Etihad AirwaysPriceFrom £562Free CancellationRating
7.3
1,431 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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