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Cheap flights from Chiang Mai to London from £181

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 8/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap return flights

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Multiple Airlines Logo
08:50 - 18:10CNX-LHR
16h 20m1 stop
Multiple Airlines Logo
06:40 - 20:45LHR-CNX
31h 05m2 stops
£536Multiple Airlines
Find Deal
jeu., 5 mars - ven., 20 mars
Multiple Airlines Logo
08:50 - 18:10CNX-LHR
16h 20m1 stop
Multiple Airlines Logo
10:35 - 16:05LHR-CNX
22h 30m2 stops
£537Multiple Airlines
Find Deal
jeu., 5 mars - jeu., 19 mars
Multiple Airlines Logo
08:50 - 18:10CNX-LHR
16h 20m1 stop
Multiple Airlines Logo
07:05 - 21:35LHR-CNX
31h 30m2 stops
£540Multiple Airlines
Find Deal
jeu., 5 mars - lun., 16 mars
Multiple Airlines Logo
23:05 - 15:55CNX-LHR
23h 50m1 stop
Multiple Airlines Logo
10:35 - 14:00LHR-CNX
20h 25m2 stops
£567Multiple Airlines
Find Deal
mar., 3 mars - jeu., 19 mars
Multiple Airlines Logo
08:50 - 18:10CNX-LHR
16h 20m1 stop
Multiple Airlines Logo
09:55 - 16:50LHR-CNX
23h 55m2 stops
£575Multiple Airlines
Find Deal
jeu., 5 mars - dim., 22 mars
Multiple Airlines Logo
22:50 - 19:00CNX-LHR
51h 10m2 stops
Multiple Airlines Logo
13:55 - 06:05LHR-CNX
33h 10m1 stop
£578Multiple Airlines
Find Deal
lun., 2 mars - jeu., 19 mars
Etihad Airways Logo
08:50 - 18:10CNX-LHR
16h 20m1 stop
Etihad Airways Logo
20:55 - 06:05LHR-CNX
26h 10m1 stop
£589Etihad Airways
Find Deal
jeu., 5 mars - jeu., 19 mars
Etihad Airways Logo
08:50 - 14:30CNX-LHR
36h 40m1 stop
Etihad Airways Logo
21:45 - 05:55LHR-CNX
26h 10m1 stop
£591Etihad Airways
Find Deal
sam., 14 mars - jeu., 25 juin
Etihad Airways Logo
08:50 - 18:10CNX-LHR
16h 20m1 stop
Etihad Airways Logo
13:55 - 06:05LHR-CNX
33h 10m1 stop
£594Etihad Airways
Find Deal
jeu., 5 mars - ven., 20 mars
Etihad Airways Logo
08:50 - 18:10CNX-LHR
16h 20m1 stop
Etihad Airways Logo
09:30 - 05:55LHR-CNX
14h 25m1 stop
£598Etihad Airways
Find Deal
sam., 14 mars - mer., 24 juin

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
5 Mar
CNX08:50Chiang Mai
16h 20m
1 stop
LHR18:10London Heathrow
19 Mar
LHR20:55London Heathrow
26h 10m
1 stop
CNX06:05Chiang Mai
£589
Find similar
Etihad Airways
5 Mar
CNX08:50Chiang Mai
16h 20m
1 stop
LHR18:10London Heathrow
20 Mar
LHR13:55London Heathrow
33h 10m
1 stop
CNX06:05Chiang Mai
£594
Find similar

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 Dec
CNX16:25Chiang Mai
32h 05m
2 stops
LHR17:30London Heathrow
7 Jan
LHR21:00London Heathrow
29h 05m
2 stops
CNX09:05Chiang Mai
£437
Find similar
China Eastern
11 Dec
CNX16:25Chiang Mai
32h 05m
2 stops
LHR17:30London Heathrow
7 Jan
LHR21:00London Heathrow
34h 20m
1 stop
CNX14:20Chiang Mai
£494
Find similar
China Eastern
11 Dec
CNX15:35Chiang Mai
32h 55m
1 stop
LHR17:30London Heathrow
7 Jan
LHR21:00London Heathrow
34h 20m
1 stop
CNX14:20Chiang Mai
£597
Find similar

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 4 décembre 2025.
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

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

jeu. 5/3

08:50-18:10

1 stop16h 20m

London Heathrow

ven. 20/3

06:40-20:45

2 stops31h 05m

£536

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

jeu. 5/3

08:50-18:10

1 stop16h 20m

London Heathrow

jeu. 19/3

10:35-16:05

2 stops22h 30m

£537

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

jeu. 5/3

08:50-18:10

1 stop16h 20m

London Heathrow

lun. 16/3

07:05-21:35

2 stops31h 30m

£540

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

mar. 3/3

23:05-15:55

1 stop23h 50m

London Heathrow

jeu. 19/3

10:35-14:00

2 stops20h 25m

£567

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

jeu. 5/3

08:50-18:10

1 stop16h 20m

London Heathrow

dim. 22/3

09:55-16:50

2 stops23h 55m

£575

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

lun. 2/3

22:50-19:00

2 stops51h 10m

London Heathrow

jeu. 19/3

13:55-06:05

1 stop33h 10m

£578

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

jeu. 5/3

08:50-18:10

1 stop16h 20m

London Heathrow

jeu. 19/3

20:55-06:05

1 stop26h 10m

£589

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

sam. 14/3

08:50-14:30

1 stop36h 40m

London Heathrow

jeu. 25/6

21:45-05:55

1 stop26h 10m

£591

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

jeu. 5/3

08:50-18:10

1 stop16h 20m

London Heathrow

ven. 20/3

13:55-06:05

1 stop33h 10m

£594

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

sam. 14/3

08:50-18:10

1 stop16h 20m

London Heathrow

mer. 24/6

09:30-05:55

1 stop14h 25m

£598

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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

What is the cheapest day to depart on your flight to London Heathrow Airport?

On average, the least expensive day to fly to London Heathrow Airport from Chiang Mai is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as £538. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Sunday is £1,055.

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the evening. momondo users have found flights departing from Chiang Mai to London Heathrow Airport in the evening for as low as £807. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are £846 on average. Flights to London Heathrow Airport from Chiang Mai in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

You could potentially save up to 19% 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?

As of December 2025, prices for Chiang Mai to London Heathrow Airport flights are approximately 64% cheaper when compared to flights at the same time last year.

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

21h 15m

Direct flights

None
The fastest flight from Chiang Mai to London Heathrow Airport takes 21h 15m
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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  • 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 16h 20m.

  • 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 £517Free CancellationRating
7.2
127 reviews
Search Air China flights
Thai AirwaysPriceFrom £890Free CancellationRating
7.8
363 reviews
Search Thai 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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