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Cheap flights from London Heathrow Airport to Chiang Rai from £361

LHR — CEI
17 Oct — 24 Oct1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to Chiang Rai

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Chiang Rai

Thu 8/1009:45 -
2 stops27h 40m
Sat 17/1020:00 -
2 stops29h 00m
Deal found 14/9£637
Wed 30/910:00 -
2 stops26h 20m
Wed 14/1010:10 -
2 stops35h 10m
Deal found 17/9£643
Sat 31/1008:25 -
2 stops23h 25m
Sat 7/1116:40 -
3 stops32h 30m
Deal found 16/9£653
Wed 30/922:05 -
2 stops34h 50m
Wed 14/1018:55 -
1 stop18h 20m
Deal found 17/9£759

Find flight deals from Heathrow to Chiang Rai

Round-trip from

£637

One-way from

£361
8/10-17/10
  • 8/10-17/10
  • 4 total stops
  • 56h 40m total
  • London to Chiang Rai
Search Deals
28/11-31/12
  • 28/11-31/12
  • 2 total stops
  • 29h 50m total
  • London to Chiang Rai
Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonChiang Rai

LHR London Heathrow - CEI Chiang Rai

LHRCEI

London Heathrow

Sat 28/11

21:30-10:20

2 stops29h 50m

Chiang Rai

Wed 31/12

00:00-18:00

Nonstop0h 00m

£361

LondonChiang Rai

LHR London Heathrow - CEI Chiang Rai

LHRCEI

London Heathrow

Sun 24/1

22:00-07:55

2 stops26h 55m

Chiang Rai

Wed 31/12

00:00-18:00

Nonstop0h 00m

£374
Fastest return journey

LondonChiang Rai

LHR London Heathrow - CEI Chiang Rai

LHRCEI

London Heathrow

Sat 28/11

11:50-13:55

1 stop19h 05m

Chiang Rai

Wed 31/12

00:00-18:00

Nonstop0h 00m

£593

LondonChiang Rai

LHR London Heathrow - CEI Chiang Rai

LHRCEI

London Heathrow

Sat 31/10

08:25-14:50

2 stops23h 25m

Chiang Rai

Sat 7/11

16:40-18:10

3 stops32h 30m

£653

LondonChiang Rai

LHR London Heathrow - CEI Chiang Rai

LHRCEI

London Heathrow

Wed 30/9

10:00-18:20

2 stops26h 20m

Chiang Rai

Wed 14/10

13:40-15:20

2 stops31h 40m

£655

LondonChiang Rai

LHR London Heathrow - CEI Chiang Rai

LHRCEI

London Heathrow

Thu 8/10

13:50-19:25

2 stops23h 35m

Chiang Rai

Sat 17/10

10:20-06:30

3 stops26h 10m

£745

LondonChiang Rai

LHR London Heathrow - CEI Chiang Rai

LHRCEI

London Heathrow

Wed 30/9

22:05-14:55

2 stops34h 50m

Chiang Rai

Wed 14/10

18:55-07:15

1 stop18h 20m

£759

LondonChiang Rai

LHR London Heathrow - CEI Chiang Rai

LHRCEI

London Heathrow

Wed 30/9

21:35-09:40

1 stop30h 05m

Chiang Rai

Wed 14/10

13:40-19:20

1 stop35h 40m

£880

Flights are sorted by cheapest return flights first.

Deals found on 12/9

Sorted by cheapest first

Best time to book a flight from Heathrow to Chiang Rai

Have a flexible travel schedule? Discover the best time to fly to Chiang Rai from Heathrow with our price prediction graph.
Estimated return price

Reviews of airlines servicing Chiang Rai

Check out reviews from past customers who have flown with Thai Airways from London Heathrow Airport to Chiang Rai to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Thai Airways
7.9
Good
419 reviews
Check prices

Crew

8.5

Comfort

7.7

Overall

7.9

Food

7.5

Entertainment

6.9

Boarding

8.0

Reviews

1 / 20
10.0
Excellent

Virendra,Jan 2026

DEL - BKK

Having required wheel chair assistance, I received amazing service from the ground and cabin staff. Everything was a breeze. Flight was comfortable but the entertainment system was quite dated. The chicken noodles served was amazing
Thai Airways
7.9
Good
419 reviews
Thai Airways
7.9
Good
419 reviews
Check prices

Crew

8.5

Comfort

7.7

Overall

7.9

Food

7.5

Entertainment

6.9

Boarding

8.0

Reviews

1 / 20
10.0
Excellent

Virendra,Jan 2026

DEL - BKK

Having required wheel chair assistance, I received amazing service from the ground and cabin staff. Everything was a breeze. Flight was comfortable but the entertainment system was quite dated. The chicken noodles served was amazing

Related info for your journey

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

    Chiang Rai (CEI), located 4.5 mi from the city center, is the airport you fly into when you book flights from London Heathrow to Chiang Rai. 1 airline have flights to Chiang Rai from London Heathrow on a regular basis. Booking flights from London Heathrow to Chiang Rai should not be difficult; the airport handles an average of 0 inbound flights from London Heathrow per day.

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

    There are many flights that can get you from London Heathrow Airport to Chiang Rai in 26h 20m. Fly via Gulf Air to get the fastest option. The distance from London Heathrow Airport to Chiang Rai is about 5571 mi.

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

    Currently priced at £909, Thai Airways will fly you from London Heathrow Airport to Chiang Rai and back. In addition to Thai Airways, many other airlines offer competitively priced options for your trip.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Heathrow to Chiang Rai 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

Browse thousands of different options on Cheapflights for your next trip

Top airline flying from Heathrow to Chiang Rai

AirlineCheapestAverageFlexibilityOn-time
Thai AirwaysCheapest£909Average£1,209FlexibilityNo cancel feeOn-time77%
Search Thai Airways flights

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Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Heathrow to Chiang Rai. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

Millions of users choose and trust Cheapflights to book the best flight deals from Heathrow to Chiang Rai for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Certainly. Search results for flights to Chiang Rai from Heathrow shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes! Start tracking prices for Heathrow to Chiang Rai flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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