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Cheap flights from London Heathrow Airport to Chiang Mai from £331

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 24/1. 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

Cheap return flights

Enter your travel dates to find the best prices.
China Eastern Logo
21:00 - 09:05
LHR
-
CNX
29h 05m2 stops
China Eastern Logo
15:35 - 17:30
CNX
-
LHR
32h 55m1 stop
£393China Eastern
Tue, 3 Feb - Tue, 10 Feb
China Eastern Logo
21:00 - 14:20
LHR
-
CNX
34h 20m1 stop
China Eastern Logo
15:35 - 17:30
CNX
-
LHR
32h 55m1 stop
£394China Eastern
Tue, 13 Jan - Mon, 26 Jan
China Eastern Logo
21:00 - 09:05
LHR
-
CNX
29h 05m2 stops
China Eastern Logo
16:25 - 17:30
CNX
-
LHR
32h 05m2 stops
£396China Eastern
Thu, 15 Jan - Tue, 27 Jan
China Eastern Logo
21:00 - 09:05
LHR
-
CNX
29h 05m2 stops
China Eastern Logo
23:20 - 17:30
CNX
-
LHR
25h 10m1 stop
£399China Eastern
Sun, 25 Jan - Sun, 8 Feb
China Eastern Logo
21:00 - 14:20
LHR
-
CNX
34h 20m1 stop
China Eastern Logo
10:05 - 17:30
CNX
-
LHR
38h 25m2 stops
£399China Eastern
Tue, 13 Jan - Mon, 26 Jan
China Eastern Logo
21:00 - 09:05
LHR
-
CNX
29h 05m2 stops
China Eastern Logo
15:35 - 17:30
CNX
-
LHR
32h 55m1 stop
£400China Eastern
Tue, 3 Mar - Tue, 17 Mar
China Eastern Logo
21:00 - 09:05
LHR
-
CNX
29h 05m2 stops
China Eastern Logo
16:25 - 17:30
CNX
-
LHR
32h 05m2 stops
£402China Eastern
Tue, 27 Jan - Tue, 3 Feb
China Eastern Logo
21:00 - 09:05
LHR
-
CNX
29h 05m2 stops
China Eastern Logo
16:25 - 17:30
CNX
-
LHR
32h 05m2 stops
£402China Eastern
Wed, 28 Jan - Wed, 4 Feb
China Eastern Logo
21:00 - 09:05
LHR
-
CNX
29h 05m2 stops
China Eastern Logo
10:05 - 17:30
CNX
-
LHR
38h 25m2 stops
£405China Eastern
Tue, 13 Jan - Mon, 26 Jan
China Eastern Logo
21:00 - 14:20
LHR
-
CNX
34h 20m1 stop
China Eastern Logo
15:35 - 17:30
CNX
-
LHR
32h 55m1 stop
£413China Eastern
Wed, 14 Jan - Wed, 21 Jan

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
3 Feb
LHR21:00London Heathrow
29h 05m
2 stops
CNX09:05Chiang Mai
10 Feb
CNX15:35Chiang Mai
32h 55m
1 stop
LHR17:30London Heathrow
£393
Find similar
China Eastern
13 Jan
LHR21:00London Heathrow
34h 20m
1 stop
CNX14:20Chiang Mai
26 Jan
CNX15:35Chiang Mai
32h 55m
1 stop
LHR17:30London Heathrow
£394
Find similar
China Eastern
15 Jan
LHR21:00London Heathrow
29h 05m
2 stops
CNX09:05Chiang Mai
27 Jan
CNX16:25Chiang Mai
32h 05m
2 stops
LHR17:30London Heathrow
£396
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
9 Apr
LHR14:45London Heathrow
33h 10m
1 stop
CNX05:55Chiang Mai
23 Apr
CNX08:45Chiang Mai
28h 15m
1 stop
LHR07:00London Heathrow
£532
Find similar
Etihad Airways
25 Dec
LHR13:55London Heathrow
33h 10m
1 stop
CNX06:05Chiang Mai
17 Jan
CNX08:50Chiang Mai
36h 40m
1 stop
LHR14:30London Heathrow
£1,231
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 16 December 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

Tue 3/2

21:00-09:05

2 stops29h 05m

Chiang Mai

Tue 10/2

15:35-17:30

1 stop32h 55m

£393

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Tue 13/1

21:00-14:20

1 stop34h 20m

Chiang Mai

Mon 26/1

15:35-17:30

1 stop32h 55m

£394

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Thu 15/1

21:00-09:05

2 stops29h 05m

Chiang Mai

Tue 27/1

16:25-17:30

2 stops32h 05m

£396

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Sun 25/1

21:00-09:05

2 stops29h 05m

Chiang Mai

Sun 8/2

23:20-17:30

1 stop25h 10m

£399

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Tue 13/1

21:00-14:20

1 stop34h 20m

Chiang Mai

Mon 26/1

10:05-17:30

2 stops38h 25m

£399

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Tue 3/3

21:00-09:05

2 stops29h 05m

Chiang Mai

Tue 17/3

15:35-17:30

1 stop32h 55m

£400

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Tue 27/1

21:00-09:05

2 stops29h 05m

Chiang Mai

Tue 3/2

16:25-17:30

2 stops32h 05m

£402

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Wed 28/1

21:00-09:05

2 stops29h 05m

Chiang Mai

Wed 4/2

16:25-17:30

2 stops32h 05m

£402

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Tue 13/1

21:00-09:05

2 stops29h 05m

Chiang Mai

Mon 26/1

10:05-17:30

2 stops38h 25m

£404

LondonChiang Mai

LHR - CNX

LHRCNX

London Heathrow

Wed 14/1

21:00-14:20

1 stop34h 20m

Chiang Mai

Wed 21/1

15:35-17:30

1 stop32h 55m

£413

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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 June is, on average, the cheapest month to fly to Chiang Mai from London Heathrow Airport, with most prices found around £648. If you aren’t able to travel during the month of June, then book flights to Chiang Mai from London Heathrow Airport during November instead. Flights to Chiang Mai in November, while not as cheap as those in June, still average around £695.

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 £654. 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 £777.

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 £570. If you have a flexible travel schedule, then try to avoid flying at midday when prices are £952 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 £760 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 £627 on momondo.

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

You could potentially save up to 23% 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 December 2025, prices for London Heathrow Airport to Chiang Mai flights are approximately 44% cheaper 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

Fastest flight time

19h 00m

Direct flights

None
The fastest flight from London Heathrow Airport to Chiang Mai takes 19h 00m
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 19h 00m.

  • 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 EasternPriceFrom £394Free CancellationRating
7.2
178 reviews
Search China Eastern flights
China SouthernPriceFrom £421Free CancellationRating
7.5
122 reviews
Search China Southern flights
Air ChinaPriceFrom £427Free CancellationRating
7.2
127 reviews
Search Air China flights
Etihad AirwaysPriceFrom £539Free CancellationRating
7.4
1,332 reviews
Search Etihad Airways flights
Malaysia AirlinesPriceFrom £554Free CancellationRating
7.3
282 reviews
Search Malaysia Airlines flights
Austrian AirlinesPriceFrom £560Free CancellationRating
7.6
879 reviews
Search Austrian Airlines flights
EVA AirPriceFrom £605Free CancellationRating
8.5
1,297 reviews
Search EVA Air flights
Cathay PacificPriceFrom £683Free CancellationRating
7.6
1,095 reviews
Search Cathay Pacific flights
Thai AirwaysPriceFrom £706Free CancellationRating
7.8
366 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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