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Cheap flights from London Heathrow Airport to Chiang Mai from £295

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Chiang Mai departing on 29/11. 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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Find the cheapest flights from London Heathrow Airport to Chiang Mai (LHR-CNX)

Cheap return flights

China Eastern Logo
21:00 - 09:05LHR-CNX
29h 05m2 stops
China Eastern Logo
16:25 - 17:30CNX-LHR
32h 05m2 stops
£518China Eastern
Find Deal
Fri, 7 Nov - Tue, 18 Nov
Air China Logo
20:25 - 21:50LHR-CNX
19h 25m1 stop
Air China Logo
23:05 - 19:40CNX-LHR
51h 35m2 stops
£520Air China
Find Deal
Sun, 19 Oct - Tue, 4 Nov
Etihad Airways Logo
08:50 - 06:05LHR-CNX
14h 15m1 stop
Etihad Airways Logo
08:50 - 18:10CNX-LHR
16h 20m1 stop
£521Etihad Airways
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Fri, 7 Nov - Tue, 18 Nov
Air China Logo
22:00 - 21:50LHR-CNX
41h 50m2 stops
Air China Logo
23:05 - 17:50CNX-LHR
25h 45m1 stop
£526Air China
Find Deal
Tue, 21 Oct - Tue, 4 Nov
China Southern Logo
17:15 - 17:50LHR-CNX
41h 35m2 stops
China Southern Logo
18:50 - 18:15CNX-LHR
30h 25m1 stop
£532China Southern
Find Deal
Sun, 2 Nov - Wed, 3 Dec
Logo
14:40 - 20:25LHR-CNX
23h 45m2 stops
Logo
08:05 - 07:30CNX-LHR
30h 25m2 stops
£532
Find Deal
Sun, 5 Oct - Thu, 13 Nov
China Southern Logo
22:00 - 17:50LHR-CNX
36h 50m1 stop
China Southern Logo
18:50 - 17:55CNX-LHR
30h 05m2 stops
£537China Southern
Find Deal
Tue, 18 Nov - Fri, 28 Nov
China Eastern Logo
21:00 - 09:05LHR-CNX
29h 05m3 stops
China Eastern Logo
15:35 - 17:30CNX-LHR
32h 55m1 stop
£544China Eastern
Find Deal
Fri, 9 Jan - Mon, 19 Jan
Etihad Airways Logo
08:50 - 06:05LHR-CNX
14h 15m1 stop
Etihad Airways Logo
08:50 - 18:10CNX-LHR
16h 20m1 stop
£557Etihad Airways
Find Deal
Fri, 14 Nov - Sat, 22 Nov
Austrian Airlines Logo
14:50 - 19:00LHR-CNX
21h 10m2 stops
Austrian Airlines Logo
10:10 - 08:20CNX-LHR
29h 10m2 stops
£578Austrian Airlines
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Sat, 22 Nov - Sat, 6 Dec

China Eastern flights from London Heathrow Airport to Chiang Mai

Our best China Eastern deals on London Heathrow Airport to Chiang Mai flight tickets
China Eastern
7 Nov
LHR21:00London Heathrow
29h 05m
2 stops
CNX09:05Chiang Mai
18 Nov
CNX16:25Chiang Mai
32h 05m
2 stops
LHR17:30London Heathrow
£518
Find similar
China Eastern
9 Jan
LHR21:00London Heathrow
29h 05m
3 stops
CNX09:05Chiang Mai
19 Jan
CNX15:35Chiang Mai
32h 55m
1 stop
LHR17:30London Heathrow
£544
Find similar
China Eastern
2 Nov
LHR21:00London Heathrow
29h 05m
2 stops
CNX09:05Chiang Mai
18 Nov
CNX16:25Chiang Mai
32h 05m
2 stops
LHR17:30London Heathrow
£545
Find similar

Etihad Airways flights from London Heathrow Airport to Chiang Mai

Our best Etihad Airways deals on London Heathrow Airport to Chiang Mai flight tickets
Etihad Airways
7 Nov
LHR08:50London Heathrow
14h 15m
1 stop
CNX06:05Chiang Mai
18 Nov
CNX08:50Chiang Mai
16h 20m
1 stop
LHR18:10London Heathrow
£521
Find similar
Etihad Airways
14 Nov
LHR08:50London Heathrow
14h 15m
1 stop
CNX06:05Chiang Mai
22 Nov
CNX08:50Chiang Mai
16h 20m
1 stop
LHR18:10London Heathrow
£557
Find similar
Etihad Airways
14 Nov
LHR08:50London Heathrow
14h 15m
1 stop
CNX06:05Chiang Mai
22 Nov
CNX08:50Chiang Mai
34h 15m
1 stop
LHR12:05London Heathrow
£558
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from London Heathrow Airport to Chiang Mai 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 28 August 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Chiang Mai that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Fri 7/11

21:00-09:05

2 stops29h 05m

Chiang Mai

Tue 18/11

16:25-17:30

2 stops32h 05m

£518

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Sun 19/10

20:25-21:50

1 stop19h 25m

Chiang Mai

Tue 4/11

23:05-19:40

2 stops51h 35m

£520

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Fri 7/11

08:50-06:05

1 stop14h 15m

Chiang Mai

Tue 18/11

08:50-18:10

1 stop16h 20m

£521

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Tue 21/10

22:00-21:50

2 stops41h 50m

Chiang Mai

Tue 4/11

23:05-17:50

1 stop25h 45m

£526

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Sun 2/11

17:15-17:50

2 stops41h 35m

Chiang Mai

Wed 3/12

18:50-18:15

1 stop30h 25m

£532

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Sun 5/10

14:40-20:25

2 stops23h 45m

Chiang Mai

Thu 13/11

08:05-07:30

2 stops30h 25m

£532

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Tue 18/11

22:00-17:50

1 stop36h 50m

Chiang Mai

Fri 28/11

18:50-17:55

2 stops30h 05m

£537

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Fri 9/1

21:00-09:05

3 stops29h 05m

Chiang Mai

Mon 19/1

15:35-17:30

1 stop32h 55m

£544

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Fri 14/11

08:50-06:05

1 stop14h 15m

Chiang Mai

Sat 22/11

08:50-18:10

1 stop16h 20m

£557

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Sat 22/11

14:50-19:00

2 stops21h 10m

Chiang Mai

Sat 6/12

10:10-08:20

2 stops29h 10m

£578

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 Chiang Mai from

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

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 month to fly to Chiang Mai?

The month of October is, on average, the cheapest month to fly to Chiang Mai from London Heathrow Airport, with most prices found around £697. If you aren’t able to travel during the month of October, then book flights to Chiang Mai from London Heathrow Airport during February instead. Flights to Chiang Mai in February, while not as cheap as those in October, still average around £704.

What is the cheapest day to depart on your flight to Chiang Mai?

The cheapest day to depart on your flight to Chiang Mai is on a Thursday when prices can be found for as low as £649. This is often the case because there is less demand to fly during this day of the week. On the other hand, Saturday is the most expensive day to depart from London Heathrow Airport because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £772.

What is the cheapest time of day to depart on your flight to Chiang Mai?

The cheapest time of day to fly to Chiang Mai is in the afternoon when flights can be purchased for as low as £566. If you have a flexible travel schedule, then try to avoid flying at midday when prices are £946 on average. Flights to Chiang Mai from London Heathrow Airport at midday are generally more expensive because this time of day is more convenient for travellers’ schedules.

How far in advance should I book a flight to Chiang Mai?

You are more likely to see cheaper flights to Chiang Mai from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Chiang Mai for around £774 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chiang Mai from London Heathrow Airport for as low as £581 on momondo.

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

You could potentially save up to 13% on your flight if you consider stops on a London Heathrow Airport to Chiang Mai flight.

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

As of August 2025, prices for London Heathrow Airport to Chiang Mai flights are approximately 23% more expensive when compared to flights at the same time last year.

When to book flights from London Heathrow Airport to Chiang Mai

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

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

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

Direct flights

None
There are no direct flights from London Heathrow Airport to Chiang Mai. There are no popular flight routes from London Heathrow Airport to Chiang Mai.
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  • How far is London Heathrow to Chiang Mai by plane?

    A flight from London Heathrow to Chiang Mai will travel around 5597.7 mi. In terms of flight time, this usually takes a little over 14h 15m.

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

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

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Heathrow Airport to Chiang Mai Airport.

  • What documentation or ID do you need to fly to Chiang Mai Airport?

    The necessary travel and health documents for your Chiang Mai Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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

Best airlines flying from London Heathrow Airport to Chiang Mai

Compare and see reviews for airlines that fly from London Heathrow Airport to Chiang Mai with momondo
Airline
Rating
Free Cancellation
Price
China SouthernPriceFrom £418Free CancellationRating
7.5
109 reviews
Search China Southern flights
China EasternPriceFrom £454Free CancellationRating
7.2
164 reviews
Search China Eastern flights
Air ChinaPriceFrom £463Free CancellationRating
7.3
95 reviews
Search Air China flights
Etihad AirwaysPriceFrom £537Free CancellationRating
7.4
1,241 reviews
Search Etihad Airways flights
Malaysia AirlinesPriceFrom £551Free CancellationRating
7.3
278 reviews
Search Malaysia Airlines flights
Cathay PacificPriceFrom £678Free CancellationRating
7.6
977 reviews
Search Cathay Pacific flights
EVA AirPriceFrom £690Free CancellationRating
8.4
1,235 reviews
Search EVA Air flights
Thai AirwaysPriceFrom £696Free CancellationRating
7.8
345 reviews
Search Thai Airways flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Chiang Mai for you.

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

Flights from London to Chiang Mai with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Chiang Mai from London.

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

If you are not ready to book a flight from London to Chiang Mai now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Chiang Mai and let you know when they change.

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