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Cheap flights from London to Chiang Rai from £299

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 12/11. Fares are subject to change and may not be available on all flights or dates of travel.
LON — CEI
20 Nov — 27 Nov1
1 adult
1 adult, Economy

Cheap flight deals from London to Chiang Rai

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) to Chiang Rai (CEI). 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 21 October 2025.

Round-trip from

£542

One-way from

£299
3/12-10/12
  • 3/12-10/12
  • 2 total stops
  • 33h 45m total
  • London to Chiang Rai
Search Deals
12/11
  • 12/11
  • 3 total stops
  • 29h 15m total
  • London to Chiang Rai
Search Deals

Find flight deals from London to Chiang Rai

Enter your travel dates to find the best prices.

Cheapest flights from London to Chiang Rai
Explore the most affordable flight options available from London to Chiang Rai. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 October 2025.

Wed 3/1216:00LGW - CEI
1 stop16h 55mMultiple Airlines
Wed 10/1208:40CEI - LGW
1 stop16h 50mMultiple Airlines
Deal found 19/10£542
Mon 1/1217:00LGW - CEI
2 stops33h 35mMultiple Airlines
Wed 17/1208:40CEI - LGW
1 stop16h 50mMultiple Airlines
Deal found 20/10£545
Mon 1/1207:25STN - CEI
3 stops25h 30mMultiple Airlines
Wed 17/1218:55CEI - STN
3 stops25h 05mMultiple Airlines
Deal found 20/10£568
Wed 3/1208:45LHR - CEI
3 stops27h 00mMultiple Airlines
Wed 10/1216:05CEI - LHR
3 stops35h 25mMultiple Airlines
Deal found 19/10£589
Sun 30/1114:15LHR - CEI
2 stops22h 10mMultiple Airlines
Sat 28/208:30CEI - LHR
2 stops30h 00mMultiple Airlines
Deal found 19/10£637
Mon 1/1208:25LHR - CEI
2 stops24h 30mMultiple Airlines
Wed 17/1208:40CEI - LHR
2 stops40h 45mMultiple Airlines
Deal found 20/10£641
Sun 30/1106:25LGW - CEI
3 stops26h 30mMultiple Airlines
Sat 28/220:00CEI - LGW
3 stops34h 40mMultiple Airlines
Deal found 19/10£641
Mon 1/1211:50LHR - CEI
1 stop19h 05mThai Airways
Wed 17/1210:15CEI - LHR
1 stop27h 25mThai Airways
Deal found 20/10£800
Wed 3/1211:50LHR - CEI
1 stop14h 50mThai Airways
Wed 10/1210:15CEI - LHR
1 stop27h 25mThai Airways
Deal found 19/10£808
Sun 30/1120:15STN - CEI
2 stops34h 40mMultiple Airlines
Sat 28/214:25CEI - STN
2 stops28h 40mMultiple Airlines
Deal found 19/10£1,291

Cheapflights Fare Finder

 
Customise your flight search to find flights from London to Chiang Rai 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 21 October 2025.
Use the filters below to find and compare flights from London to Chiang Rai that are best for you.

Fly from

London

Fly to

Chiang Rai

Route

Depart

Return

Price

LondonChiang Rai

LGW - CEI

LGWCEI

London Gatwick

Wed 3/12

16:00-15:55

1 stop16h 55m

Chiang Rai

Wed 10/12

08:40-18:30

1 stop16h 50m

£542

LondonChiang Rai

LGW - CEI

LGWCEI

London Gatwick

Mon 1/12

17:00-09:35

2 stops33h 35m

Chiang Rai

Wed 17/12

08:40-18:30

1 stop16h 50m

£545

LondonChiang Rai

STN - CEI

STNCEI

London Stansted

Mon 1/12

07:25-15:55

3 stops25h 30m

Chiang Rai

Wed 17/12

18:55-13:00

3 stops25h 05m

£568

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Wed 3/12

08:45-18:45

3 stops27h 00m

Chiang Rai

Wed 10/12

16:05-20:30

3 stops35h 25m

£590

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Sun 30/11

14:15-19:25

2 stops22h 10m

Chiang Rai

Sat 28/2

08:30-07:30

2 stops30h 00m

£637

LondonChiang Rai

LGW - CEI

LGWCEI

London Gatwick

Tue 17/3

08:40-14:50

2 stops23h 10m

Chiang Rai

Wed 29/4

19:55-06:40

2 stops40h 45m

£645

LondonChiang Rai

LGW - CEI

LGWCEI

London Gatwick

Fri 10/4

09:00-09:55

2 stops18h 55m

Chiang Rai

Tue 28/4

13:40-06:40

2 stops23h 00m

£737

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Mon 1/12

11:50-13:55

1 stop19h 05m

Chiang Rai

Wed 17/12

10:15-06:40

1 stop27h 25m

£800

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Wed 3/12

11:50-09:40

1 stop14h 50m

Chiang Rai

Wed 10/12

10:15-06:40

1 stop27h 25m

£808

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Wed 11/2

15:30-18:20

2 stops19h 50m

Chiang Rai

Wed 11/3

14:25-06:25

2 stops23h 00m

£814

Flights are sorted by cheapest return flights first.

Deals found on 18/10

Showing 1-10 of 21 results
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Best time to book a flight from London to Chiang Rai

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

What is the cheapest month to book a flight from London to Chiang Rai?

Currently, October is the cheapest month in which you can book a flight from London to Chiang Rai (average of £425). Flying from London to Chiang Rai in July is currently the most expensive (average of £649). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Chiang Rai

Get insights into the airlines that provide service to Chiang Rai. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Chiang Rai. Reviews last updated 21 October 2025.
Get a feel of what it's like to fly with Thai Airways from London to Chiang Rai by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Thai Airways
7.8
Good
359 reviews
Check prices

Boarding

7.9

Comfort

7.5

Crew

8.3

Entertainment

6.9

Food

7.3

Overall

7.8

Reviews

1 / 18
10.0
Excellent

Joe,Jun 2025

BKK - TPE

The flight was very comfortable, and I really appreciated that each seat had an electric outlet to charge devices. The staff was great.
Thai Airways
7.8
Good
359 reviews
Thai Airways
7.8
Good
359 reviews
Check prices

Boarding

7.9

Comfort

7.5

Crew

8.3

Entertainment

6.9

Food

7.3

Overall

7.8

Reviews

1 / 18
10.0
Excellent

Joe,Jun 2025

BKK - TPE

The flight was very comfortable, and I really appreciated that each seat had an electric outlet to charge devices. The staff was great.

Related info for your journey

Find useful and relevant information for your journey from London to Chiang Rai. 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 into for flights to Chiang Rai from London?

    Located just 4.5 mi from the city center, Chiang Rai is the airport most travelers will use when flying to Chiang Rai from London. Booking flights from London to Chiang Rai (CEI) should be relatively easy as there are 0 daily inbound flights from London from 1 airline.

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

    Flying on Thai Airways is currently your cheapest option to Chiang Rai, with prices starting at £736.

  • What are the most popular routes from London to Chiang Rai?

    Most travelers choose London Heathrow - Chiang Rai, London Gatwick - Chiang Rai or London Stansted - Chiang Rai when deciding on the best route from London to Chiang Rai.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from London 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.

  • What is the cheapest month to book a flight from London to Chiang Rai?

    Currently, October is the cheapest month in which you can book a flight from London to Chiang Rai (average of £425). Flying from London to Chiang Rai in July is currently the most expensive (average of £649). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for London to Chiang Rai

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from London to Chiang Rai

Discover the top airline that operate flights from London to Chiang Rai. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 21 October 2025.
AirlineCheapestAverageFlexibilityOn-time
Thai AirwaysCheapest£736Average£794FlexibilityNo cancel feeOn-time77%
Search Thai Airways flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from London to Chiang Rai?

Cheapflights helps you search for flights from London to Chiang Rai via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

Cheapflights simply makes it quick and affordable to book flights from London to Chiang Rai by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

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

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

Yes, Cheapflights offers price alerts on London to Chiang Rai 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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