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Cheap flights from Chiang Rai to London Heathrow Airport from £358

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 15/5. Fares are subject to change and may not be available on all flights or dates of travel.
CEI — LHR
6 Jun — 13 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap 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 7 May 2026.

Thu 18/608:25
CEI
-
LHR
2 stops29h 05m
Multiple Airlines
Thu 12/1114:15
LHR
-
CEI
2 stops22h 10m
Multiple Airlines
Deal found 7/5£761
Fri 19/618:55
CEI
-
LHR
2 stops24h 20m
Multiple Airlines
Fri 26/608:25
LHR
-
CEI
2 stops19h 15m
Multiple Airlines
Deal found 4/5£765
Thu 18/613:40
CEI
-
LHR
2 stops22h 45m
Multiple Airlines
Wed 11/1108:40
LHR
-
CEI
2 stops18h 00m
Multiple Airlines
Deal found 7/5£978
Wed 17/610:10
CEI
-
LHR
1 stop15h 05m
Multiple Airlines
Wed 11/1108:40
LHR
-
CEI
2 stops18h 00m
Multiple Airlines
Deal found 7/5£1,086
Wed 17/618:55
CEI
-
LHR
1 stop18h 20m
Thai Airways
Wed 11/1111:50
LHR
-
CEI
1 stop14h 50m
Thai Airways
Deal found 7/5£1,242
Fri 19/610:10
CEI
-
LHR
1 stop15h 05m
Multiple Airlines
Mon 9/1121:35
LHR
-
CEI
1 stop14h 50m
Multiple Airlines
Deal found 7/5£1,315
Fri 19/610:10
CEI
-
LHR
1 stop15h 05m
Multiple Airlines
Wed 11/1121:20
LHR
-
CEI
1 stop15h 05m
Multiple Airlines
Deal found 7/5£2,240

Find 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 7 May 2026.

Round-trip from

£761

One-way from

£358
18/6-12/11
  • 18/6-12/11
  • 4 total stops
  • 51h 15m total
  • Chiang Rai to London
Search Deals
15/5
  • 15/5
  • 2 total stops
  • 29h 10m total
  • Chiang Rai to London
Search Deals

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 7 May 2026.
Use the filters below to find and compare flights from Chiang Rai to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Chiang RaiLondon

CEI - LHR

CEILHR

Chiang Rai

Fri 19/6

18:55-13:15

2 stops24h 20m

London Heathrow

Fri 26/6

08:25-09:40

2 stops19h 15m

£765

Chiang RaiLondon

CEI - LHR

CEILHR

Chiang Rai

Thu 18/6

08:25-19:20

1 stop16h 55m

London Heathrow

Thu 12/11

21:00-15:55

2 stops35h 55m

£894

Chiang RaiLondon

CEI - LHR

CEILHR

Chiang Rai

Thu 18/6

13:40-06:25

2 stops22h 45m

London Heathrow

Wed 11/11

08:40-09:40

2 stops18h 00m

£978

Chiang RaiLondon

CEI - LHR

CEILHR

Chiang Rai

Wed 17/6

18:55-07:15

1 stop18h 20m

London Heathrow

Wed 11/11

11:50-09:40

1 stop14h 50m

£1,242

Chiang RaiLondon

CEI - LHR

CEILHR

Chiang Rai

Thu 18/6

13:40-07:15

1 stop23h 35m

London Heathrow

Wed 11/11

11:50-09:40

1 stop14h 50m

£1,242
Fastest return journey

Chiang RaiLondon

CEI - LHR

CEILHR

Chiang Rai

Fri 19/6

10:10-19:15

1 stop15h 05m

London Heathrow

Mon 9/11

21:35-19:25

1 stop14h 50m

£1,315
Cheapest one-way
Fastest single journey

Chiang RaiLondon

CEI - LHR

CEILHR

Chiang Rai

Fri 15/5

20:35-18:45

3 stops52h 10m

£532

Flights are sorted by cheapest return flights first.

Deals found on 4/5

Sorted by cheapest first

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.

  • 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

Travelling to a place near London Heathrow Airport?

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Wembley
Croydon
Northampton
Hounslow
Luton
Gatwick
Ilford
Slough
Hayes
Brentford
Colchester
Romford
Watford
Kingston upon Thames
Eastbourne
Swindon
Ipswich
Southend-on-Sea
Guildford

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from Chiang Rai to Heathrow flexibly with Cheapflights today.

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