CNX - LHR

£601 Find Cheap Flights from Chiang Mai to London Heathrow Airport

This is the cheapest return flight price found by a KAYAK user in the last 72 hours by searching for a flight from Chiang Mai to Heathrow departing on 11/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to London Heathrow Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chiang Mai to London, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chiang Mai to London, as well as popular online travel agencies
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Cheap Flights from Chiang Mai to Heathrow (CNX-LHR)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Chiang Mai to Heathrow that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Chiang Mai to Heathrow

Thu, 11 Sep - Tue, 23 Sep
Logo
08:00 - 07:30CNX-LHR
29h 30m2 stops
Logo
14:40 - 21:55LHR-CNX
25h 15m2 stops
£601
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Thu, 4 Sep - Tue, 16 Sep
Malaysia Airlines Logo
14:40 - 16:35CNX-LHR
31h 55m1 stop
Malaysia Airlines Logo
11:00 - 11:40LHR-CNX
18h 40m1 stop
£644Malaysia Airlines
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Wed, 3 Sep - Sun, 14 Sep
Logo
22:20 - 16:00CNX-LHR
47h 40m2 stops
Logo
14:40 - 17:55LHR-CNX
21h 15m2 stops
£649
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Tue, 24 Jun - Thu, 4 Dec
China Southern Logo
18:50 - 19:00CNX-LHR
30h 10m1 stop
China Southern Logo
21:30 - 17:50LHR-CNX
37h 20m2 stops
£666China Southern
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Tue, 24 Jun - Fri, 28 Nov
China Southern Logo
18:50 - 19:00CNX-LHR
30h 10m1 stop
China Southern Logo
21:30 - 17:50LHR-CNX
61h 20m2 stops
£667China Southern
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Tue, 8 Jul - Tue, 15 Jul
China Eastern Logo
14:55 - 18:40CNX-LHR
33h 45m1 stop
China Eastern Logo
21:20 - 09:05LHR-CNX
29h 45m3 stops
£701China Eastern
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Tue, 8 Jul - Tue, 15 Jul
China Eastern Logo
16:20 - 18:40CNX-LHR
32h 20m2 stops
China Eastern Logo
21:20 - 09:05LHR-CNX
29h 45m3 stops
£706China Eastern
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Wed, 25 Jun - Sun, 30 Nov
Austrian Airlines Logo
20:00 - 08:45CNX-LHR
18h 45m2 stops
Austrian Airlines Logo
06:00 - 18:55LHR-CNX
29h 55m2 stops
£742Austrian Airlines
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Wed, 25 Jun - Fri, 28 Nov
Austrian Airlines Logo
20:00 - 08:45CNX-LHR
18h 45m2 stops
Austrian Airlines Logo
14:50 - 18:55LHR-CNX
21h 05m2 stops
£804Austrian Airlines
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Thu, 4 Sep - Thu, 18 Sep
Thai Airways Logo
15:30 - 07:15CNX-LHR
21h 45m1 stop
Thai Airways Logo
12:30 - 08:45LHR-CNX
14h 15m1 stop
£849Thai Airways
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KAYAK's insights & trends for Chiang Mai to Heathrow flights

Get data-powered insights and trends into flights from Chiang Mai to Heathrow to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Chiang Mai to London Heathrow Airport?

The average price of all round-trip flights from Chiang Mai to London Heathrow Airport clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Chiang Mai to London Heathrow Airport, look for departures on Wednesdays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from London Heathrow Airport, Sunday is the cheapest day to fly and Tuesday is the most expensive.

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Good to know - Cheap tickets from Chiang Mai to London Heathrow Airport

Cheapest flight£218
Flight from Chiang Mai to London Heathrow Airport

When to book flights from Chiang Mai to Heathrow

Are your dates flexible? Find out the best times to travel from Chiang Mai to Heathrow based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Chiang Mai to London Heathrow Airport flights

  • Where do flights with one stopover between Chiang Mai to Heathrow usually stop?

    Thai Airways flights usually stop in Bangkok. Korean Air flights generally stop in Seoul at Incheon Airport (ICN) and EVA Air flights also stop in Bangkok. You can also find flights with Singapore Airlines that stop at Singapore Changi Aiport (SIN). Some China Eastern flights have a single stopover in Shanghai (PVG) while most Cathay Pacific flights have two stops, although some include a single stopover in Hong Kong (HKG).

  • How much checked luggage can I bring on flights to Chiang Mai?

    Korean Air allows you to bring 23 kg on an Economy ticket. Qatar Airways allows 20 kg, 25 kg, 30 kg or 35 kg, depending on the type of Economy fare you choose. Thai Airways lets you bring 20 kg of checked luggage on their Standard Economy fare. Singapore Airlines lets you bring 25 kg on their Value and Lite fares and 30 kg on their Flexi and Standard fares.

  • How much carry-on luggage can I bring on flights to London?

    Korean Air allows you to bring 10 kg of carry on luggage spread across your suitcase and personal bag. Most other airlines let passengers bring up to 7 kg of carry on luggage, plus a small personal item. This item usually isn't weighed, but it generally can't be larger than 40 x 30 x 10 cm.

  • Which lounges can I use at Chiang Mai Airport (CNX)?

    Chiang Mai Airport has a number of lounges available. Bangkok Airways has two lounges in the Domestic Terminal. Thai Airways has lounges in the domestic and international terminals. You can also spend time at the Coral Executive Lounge. There's one in each terminal and they're open to all passengers for an additional fee.

  • What is the cheapest flight from Chiang Mai to London Heathrow Airport?

    In the last 3 days, the lowest price for a flight from Chiang Mai to London Heathrow Airport was £296 for a one-way ticket and £816 for a return.

  • Which airports will I be using when flying from Chiang Mai to London Heathrow Airport?

    When flying out of Chiang Mai you will be using Chiang Mai. You will be landing at London Heathrow Airport, also known as London Heathrow.

  • Which aircraft models fly most regularly from Chiang Mai to London Heathrow Airport?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Chiang Mai to London Heathrow Airport?

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between Chiang Mai and London Heathrow Airport, with Star Alliance being the most commonly used for this route.

  • How does KAYAK find such low prices on flights from Chiang Mai to London Heathrow Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Chiang Mai to London Heathrow Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Chiang Mai to London Heathrow Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London Heathrow Airport from Chiang Mai is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Chiang Mai to London Heathrow Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to London Heathrow Airport with an airline and back to Chiang Mai with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Chiang Mai to London Heathrow Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London Heathrow Airport from Chiang Mai up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Chiang Mai to London Heathrow Airport

  • If you need special assistance on this route, make sure to contact your airline at least 48 hours in advance. As there are some self-transfer routes with multiple airlines, check to see if you need to contact both airlines.
  • While there are many flights from Chiang Mai to London Heathrow Airport (LHR) with a single stopover, you can also find flights with two stopovers that are cheaper. Most stop in Bangkok (BKK) first. Oman Air flights then stop in Muscat and Etihad Airways flights stop in Abu Dhabi (AUH). Bangkok Airways and Austrian Airlines partner for a route that stops in Bangkok and Vienna (VIE)
  • After landing at London Heathrow Airport, you can head into Central London on the Heathrow Express. It takes around 15 minutes to arrive at London Paddington Station. Alternatively, you can take the Elizabeth Line train which takes slightly longer but is also cheaper.
  • If you fly with Emirates or Qatar Airways, you can use their stopover services on your second stopover in Dubai (DXB) or Doha (DOH). This service includes a stay at a luxury hotel and optional tours. If you have to book a long stopover with Emirates, you may be able to access this service for free.
  • If you have a stopover in Bangkok, make sure you check your ticket carefully. Some of these flights may depart from the Domestic Terminal in Chiang Mai, instead of the international one. This may also mean you'll need to go through a security check when you enter the International Terminal in Bangkok.

Top airline flying from Chiang Mai to Heathrow

 
See real verified KAYAK customer reviews for airlines flying from Chiang Mai to London. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Chiang Mai to Heathrow? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.7
Thai AirwaysOverall score based on 335 reviews
8.3Crew
7.3Food
7.5Comfort
6.8Entertainment
7.8Boarding
Airline reviews

Although booked meal of fruit only The crew had not received this special meal The same happened on my flight Bangkok / CAN The films are so old that best is to use own computer to watch downloads . Serve nuts but they do not warm up . Service is attentive , WC clean

8.0 ExcellentAntonio, Jun 2025HKT - BKK
Read more Thai Airways reviews

Although booked meal of fruit only The crew had not received this special meal The same happened on my flight Bangkok / CAN The films are so old that best is to use own computer to watch downloads . Serve nuts but they do not warm up . Service is attentive , WC clean

Terrible. It’s like they are stuck in the dark ages. I brought a standard carry on suitcase and a back pack - I was told I could only carry on 7kg per bag - in business class, I was forced to remove articles from the suitcase and put them into my backpack! That’s the most ridiculous thing I’ve ever encountered in all my years of flying. The two bags weighed the same amount but one could not be more than 7kg. Holy cow.

They used Thai Smile plane, which is a smaller model and used to service only domestic flights; hence, the plane is small and quite compact. No entertainment on the flight. While boarding was delayed, it was done in a quick manner.

I give EVA 5 stars in every category. I enjoy this airline and it's great team of employees. I always highly recommend EVA to friends and family and everyone.

The flight was delayed going out of the gate at BKK that made it a difficult challenge to get through immigration transfer at tapei and make it to my departure on time. This appears to be a recurring issue. The flight crew and cabin crew were excellent. The food was very nice.

The boarding efficiency was good. A couple of the flight attendants did not seem in the best of moods. Overall it was a good experience.

The setting configuration of the aircraft stinks. Nobody should pay business class fares and be so uncomfortable. The design of facing fellow passengers is a brilliant nincompoop.

Entertainment is limited with a relatively old catalogue. Wi-Fi never works and the cabin and lavatory had evidence of a lot of scuff marks and temporary repairs. Nothing unsafe, but a bit tatty in places.

Delayed flight in Singapore caused the transfer at Bangkok to be very stressful. Fortunately, no elderly were in this trip, else it will not be possible to catch the connecting flight. There were also several occasions throughout the flight journey where some of the passengers were not wearing their seat belts despite several remainders from the stewardess.

USB charging port was not working at my seat 48K.

Everything you need to know for your flight from Chiang Mai to Heathrow

Information on your arrival and departure airports

Chiang Mai (CNX)
Heathrow (LHR)

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