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Cheap flights from Chiang Mai to London Heathrow Airport from £139

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 6/11. Fares are subject to change and may not be available on all flights or dates of travel.
CNX — LHR
16 Nov — 23 Nov1
1 adult
1 adult, Economy

Cheap 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 17 October 2025.

Round-trip from

£485

One-way from

£139

Popular in

June

Cheapest in

December

Average price

£606
Air China
  • Air China
  • 1/12-8/12
  • 2 total stops
  • 52h 40m total
  • Chiang Mai to London
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Etihad Airways
  • Etihad Airways
  • 6/11
  • 1 total stop
  • 34h 15m total
  • Chiang Mai to London
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£78 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£18 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Find 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 17 October 2025.

Mon 1/1208:50CNX - LHR
1 stop34h 15mMultiple Airlines
Mon 8/1220:25LHR - CNX
1 stop18h 25mMultiple Airlines
Deal found 17/10£485
Tue 16/1216:25CNX - LHR
2 stops32h 05mChina Eastern
Tue 10/321:00LHR - CNX
2 stops29h 05mChina Eastern
Deal found 16/10£512
Wed 17/1221:35CNX - LHR
2 stops26h 55mMultiple Airlines
Thu 1/117:40LHR - CNX
1 stop21h 10mMultiple Airlines
Deal found 16/10£546
Tue 16/1216:25CNX - LHR
2 stops32h 05mMultiple Airlines
Tue 10/320:25LHR - CNX
1 stop18h 25mMultiple Airlines
Deal found 16/10£552
Wed 17/1223:05CNX - LHR
1 stop23h 50mAir China
Thu 1/117:40LHR - CNX
1 stop21h 10mAir China
Deal found 15/10£583
Tue 16/1223:05CNX - LHR
1 stop23h 50mAir China
Tue 10/320:25LHR - CNX
1 stop18h 25mAir China
Deal found 16/10£584
Mon 1/1216:25CNX - LHR
2 stops32h 05mChina Eastern
Mon 8/1221:00LHR - CNX
2 stops29h 05mChina Eastern
Deal found 17/10£666

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 17 October 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

Mon 1/12

08:50-12:05

1 stop34h 15m

London Heathrow

Mon 8/12

20:25-21:50

1 stop18h 25m

£485

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Tue 16/12

16:25-17:30

2 stops32h 05m

London Heathrow

Tue 10/3

21:00-09:05

2 stops29h 05m

£512

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Tue 3/3

14:50-15:25

1 stop31h 35m

London Heathrow

Fri 13/3

21:25-11:25

1 stop31h 00m

£521

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Thu 26/2

14:50-15:25

1 stop31h 35m

London Heathrow

Thu 12/3

21:25-13:50

1 stop33h 25m

£521

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Thu 5/3

14:50-15:25

1 stop31h 35m

London Heathrow

Sat 7/3

21:25-11:25

1 stop31h 00m

£535

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Wed 17/12

21:35-17:30

2 stops26h 55m

London Heathrow

Thu 1/1

17:40-21:50

1 stop21h 10m

£546

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Tue 16/12

23:05-15:55

1 stop23h 50m

London Heathrow

Tue 10/3

20:25-21:50

1 stop18h 25m

£584

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Wed 17/12

23:05-15:55

1 stop23h 50m

London Heathrow

Thu 1/1

20:25-21:50

1 stop18h 25m

£585

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Thu 6/11

08:50-12:05

1 stop34h 15m

£139

Chiang MaiLondon

CNX - LHR

CNXLHR

Chiang Mai

Mon 16/2

12:25-15:25

1 stop34h 00m

£224

Flights are sorted by cheapest return flights first.

Deals found on 16/10

Showing 1-10 of 18 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 63% of one-stop itineraries from Chiang Mai to London Heathrow Airport on Cheapflights.

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 Bangkok (BKK) have the shortest average one-way travel time for one-stop routes: 16h 35m.

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 Bangkok (BKK) have the shortest average one-way travel time for one-stop routes: 16h 35m.

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 23m.

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 0 different airlines.

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

    China Eastern and Malaysia Airlines can get you from Chiang Mai to London Heathrow Airport in just under 31h 35m. Your travel time can differ by up to 30m. The distance from Chiang Mai to London Heathrow Airport is about 5598 mi. Both multi-stop and direct flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Chiang Mai to London Heathrow Airport one-way?

    The cheapest airline one-way is Etihad Airways, with whom users have recently found tickets for as low as £139. However, be on the lookout for offers from Malaysia Airlines and China Eastern, as they are both options that can get you from Chiang Mai to London Heathrow Airport for a low price.

  • 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
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Gatwick
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Wembley
Deal
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Crawley
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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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