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Cheap flights from Chiang Mai to London Heathrow Airport from £180

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 19/1. Fares are subject to change and may not be available on all flights or dates of travel.
CNX — LHR
17 Jan — 24 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Chiang Mai to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from Chiang Mai to Heathrow
Explore the most affordable flight options available from Chiang Mai to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 December 2025.

Fri 19/1221:35CNX - LHR
2 stops27h 15mMultiple Airlines
Tue 30/1219:20LHR - CNX
3 stops36h 00mMultiple Airlines
Deal found 14/12£757
Sat 20/1208:50CNX - LHR
1 stop28h 50mEtihad Airways
Sat 3/108:50LHR - CNX
1 stop14h 15mEtihad Airways
Deal found 15/12£805
Thu 18/1215:35CNX - LHR
1 stop32h 55mChina Eastern
Thu 25/1221:00LHR - CNX
1 stop34h 20mChina Eastern
Deal found 17/12£850
Thu 18/1221:35CNX - LHR
2 stops27h 20mMultiple Airlines
Thu 25/1218:55LHR - CNX
2 stops20h 00mMultiple Airlines
Deal found 17/12£979

Find flight deals from Chiang Mai to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Chiang Mai (CNX) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 18 December 2025.

Round-trip from

£470

One-way from

£180

Popular in

October

Cheapest in

December

Average price

£571
China Eastern
  • China Eastern
  • 29/1-5/2
  • 2 total stops
  • 47h 10m total
  • Chiang Mai to London
Search Deals
19/1
  • 19/1
  • 2 total stops
  • 26h 20m total
  • Chiang Mai to London
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (£29 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£19 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Chiang Mai to Heathrow 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, Cheapflights users made 858,174 searches. Data last updated 18 December 2025.
Use the filters below to find and compare flights from Chiang Mai to London Heathrow Airport that are best for you.

Fly from

Chiang Mai

Fly to

Heathrow

Route

Depart

Return

Price

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Tue 20/1

08:50-18:10

1 stop16h 20m

London Heathrow

Tue 27/1

21:00-09:05

2 stops29h 05m

£481

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Thu 29/1

21:15-17:30

2 stops27h 15m

London Heathrow

Thu 5/2

21:00-22:20

1 stop18h 20m

£574

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Sat 31/1

08:50-06:40

1 stop28h 50m

London Heathrow

Sat 7/2

10:00-22:20

2 stops29h 20m

£585

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Tue 3/3

08:50-06:40

1 stop28h 50m

London Heathrow

Fri 13/3

20:55-06:05

1 stop26h 10m

£597

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Thu 14/5

23:05-17:40

1 stop24h 35m

London Heathrow

Mon 18/5

20:25-21:50

1 stop19h 25m

£636

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Sat 28/3

14:50-15:35

1 stop31h 45m

London Heathrow

Sat 18/4

21:35-11:40

1 stop32h 05m

£665

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Wed 10/6

12:35-05:55

1 stop23h 20m

London Heathrow

Sat 20/6

21:35-11:40

1 stop32h 05m

£678

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Thu 7/5

14:40-16:35

1 stop31h 55m

London Heathrow

Thu 21/5

11:00-11:40

1 stop18h 40m

£680

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Mon 19/1

22:50-18:10

2 stops26h 20m

£180

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Mon 22/12

16:25-17:30

2 stops32h 05m

£182

Flights are sorted by cheapest return flights first.

Deals found on 15/12

Showing 1-10 of 17 results
1
2

Best time to book a flight from Chiang Mai to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Chiang Mai with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Chiang Mai to London Heathrow Airport

What’s the top stopover airport for flights from Chiang Mai to London Heathrow Airport?

Share of one-stop return flights from Chiang Mai to London Heathrow Airport chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Bangkok (BKK) – chosen by Cheapflights users on 50% of one-stop itineraries from Chiang Mai to London Heathrow Airport on Cheapflights.

What’s the cheapest stopover airport for flights from Chiang Mai to London Heathrow Airport?

Average return fare for one-stop flights from Chiang Mai to London Heathrow Airport, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Guangzhou (CAN) is the most affordable one-stop option, with an average return flight price of £489.

What’s the fastest stopover option from Chiang Mai to London Heathrow Airport?

Shortest average travel time for one-stop one-way flights from Chiang Mai to London Heathrow Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via Abu Dhabi (AUH) have the shortest average one-way travel time for one-stop routes: 16h 21m.

Which airport typically offers the quickest stopover for flights from Chiang Mai to London Heathrow Airport?

Average stopover duration for one-stop one-way flights from Chiang Mai to London Heathrow Airport, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Abu Dhabi (AUH) offer the fastest connection on this route, with an average stopover time of 1h 21m.

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated 18 December 2025.
See what other customers who have flown with Air China from Chiang Mai to London Heathrow Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air China
7.1
Good
129 reviews
Check prices

Crew

7.8

Boarding

7.6

Food

7.0

Overall

7.1

Entertainment

6.4

Comfort

7.0

Reviews

1 / 4
8.0
Excellent

jin oh,Nov 2025

HGH - HKG

Kind attention. Food was ok and the entertainment not remarkable
Air China
7.1
Good
129 reviews
Air China
7.1
Good
129 reviews
Check prices

Crew

7.8

Boarding

7.6

Food

7.0

Overall

7.1

Entertainment

6.4

Comfort

7.0

Reviews

1 / 4
8.0
Excellent

jin oh,Nov 2025

HGH - HKG

Kind attention. Food was ok and the entertainment not remarkable

Related info for your journey

Find useful and relevant information for your journey from Chiang Mai to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Chiang Mai to London Heathrow?

    If you book a flight to London Heathrow from Chiang Mai, you will be flying from Chiang Mai, which is the city’s only airport. Chiang Mai (CNX) is located 1.9 mi from the center of Chiang Mai. There are 0 flights from Chiang Mai to London Heathrow per day from 1 airline.

  • How long is the flight from Chiang Mai to London Heathrow Airport?

    Etihad Airways can get you from Chiang Mai to London Heathrow Airport in just under 28h 50m. Your travel time can differ by up to . The distance from Chiang Mai to London Heathrow Airport is about 5598 mi.

  • What is the cheapest airline to fly from Chiang Mai to London Heathrow Airport round-trip?

    Currently priced at £514, Air China will fly you from Chiang Mai to London Heathrow Airport and back. In addition to Air China, many other airlines offer competitively priced options for your trip. Users have found that Air China is 39% cheaper than the other options available to this destination.

  • Can I find deals for flights from Chiang Mai to Heathrow that include hotel bookings?

    Yes. In addition to deals on Chiang Mai to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Chiang Mai to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chiang Mai to Heathrow.

  • Can I find deals for business class flights from Chiang Mai to Heathrow?

    Yes. Cheapflights offers flight deals from Chiang Mai to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Croydon
Slough
Hounslow
Northampton
Luton
Gatwick
Wembley
Ilford
Brentford
Colchester
Hayes
Watford
Crawley
Swindon
Winchester
Bedford
Romford
Chichester
Eastbourne

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Chiang Mai to Heathrow

Discover the top airline that operate flights from Chiang Mai to Heathrow. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 18 December 2025.
AirlineCheapestAverageFlexibilityOn-time
Air ChinaCheapest£514Average£551FlexibilityNo cancel feeOn-time67%
Search Air China flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Chiang Mai to Heathrow?

Cheapflights makes it easy to find Chiang Mai to Heathrow flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Chiang Mai to Heathrow?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Chiang Mai to Heathrow.

Can Cheapflights find flights from Chiang Mai to Heathrow with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Chiang Mai to Heathrow, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Chiang Mai to Heathrow become cheaper?

Yes, Cheapflights offers price alerts on Chiang Mai to Heathrow flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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