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Cheap flights from Chiang Rai to London Heathrow Airport from £651

This is the cheapest retur 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.
CEI — LHR
23 Nov — 30 Nov1
1 adult
1 adult, Economy, 0 bags

Find flight deals from Chiang Rai to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from Chiang Rai to Heathrow
Explore the most affordable flight options available from Chiang Rai to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 24 October 2025.

Thu 6/1118:45CEI - LHR
2 stops26h 45mMultiple Airlines
Wed 19/1106:40LHR - CEI
3 stops25h 35mMultiple Airlines
Deal found 22/10£651
Thu 6/1109:50CEI - LHR
1 stop27h 50mThai Airways
Wed 19/1111:50LHR - CEI
1 stop14h 50mThai Airways
Deal found 22/10£859

Cheap flight deals from Chiang Rai to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Chiang Rai (CEI) 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 24 October 2025.

Round-trip from

£651
6/11-19/11
  • 6/11-19/11
  • 5 total stops
  • 52h 20m total
  • Chiang Rai to London
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Cheapflights Fare Finder

 
Customise your flight search to find flights from Chiang Rai 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 24 October 2025.
Use the filters below to find and compare flights from Chiang Rai to London Heathrow Airport that are best for you.

Fly from

Chiang Rai

Fly to

Heathrow

Route

Depart

Return

Price

Chiang RaiLondon

CEI - LHR

CEILHR

Chiang Rai

Thu 6/11

18:55-12:05

2 stops24h 10m

London Heathrow

Wed 19/11

15:30-18:20

2 stops19h 50m

£709

Chiang RaiLondon

CEI - LHR

CEILHR

Chiang Rai

Thu 6/11

09:50-06:40

1 stop27h 50m

London Heathrow

Wed 19/11

11:50-09:40

1 stop14h 50m

£859

Chiang RaiLondon

CEI - LHR

CEILHR

Chiang Rai

Thu 5/3

18:55-15:50

2 stops27h 55m

London Heathrow

Sat 7/3

20:15-18:20

2 stops39h 05m

£919

Chiang RaiLondon

CEI - LHR

CEILHR

Chiang Rai

Thu 5/3

18:55-06:40

1 stop18h 45m

London Heathrow

Sat 7/3

11:50-18:20

1 stop23h 30m

£967

Flights are sorted by cheapest return flights first.

Deals found on 22/10

Best time to book a flight from Chiang Rai to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Chiang Rai 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.

Related info for your journey

Find useful and relevant information for your journey from Chiang Rai 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 Rai to London Heathrow?

    If you book a flight to London Heathrow from Chiang Rai, you will be flying from Chiang Rai, which is the city’s only airport. Chiang Rai (CEI) is located 4.5 mi from the center of Chiang Rai. There are 0 flights from Chiang Rai to London Heathrow per day from 0 different airlines.

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

    A quick flight from Chiang Rai to London Heathrow Airport can take about 27h 55m. Lufthansa provides one of the quickest options available for as low as £919. The distance between Chiang Rai and London Heathrow Airport is about 5571 mi.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Chiang Rai 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

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

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