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Cheap flights from London to Chiang Rai from £301

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 3/9. Fares are subject to change and may not be available on all flights or dates of travel.
LON — CEI
21 Apr — 28 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap 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 22 March 2026.

Mon 11/516:15
LHR
-
CEI
2 stops21h 10m
Multiple Airlines
Sat 27/608:25
CEI
-
LHR
2 stops29h 05m
Multiple Airlines
Deal found 19/3£502
Sun 3/514:40
LHR
-
CEI
2 stops22h 45m
Multiple Airlines
Sun 10/508:25
CEI
-
LHR
2 stops29h 05m
Multiple Airlines
Deal found 19/3£507
Mon 11/511:35
LGW
-
CEI
2 stops25h 50m
Multiple Airlines
Sat 27/610:35
CEI
-
LGW
3 stops26h 50m
Multiple Airlines
Deal found 19/3£618
Sun 3/509:00
LGW
-
CEI
2 stops23h 55m
Multiple Airlines
Sun 10/508:25
CEI
-
LGW
2 stops28h 15m
Multiple Airlines
Deal found 19/3£695
Sun 3/509:00
LHR
-
CEI
2 stops27h 20m
Multiple Airlines
Thu 11/610:10
CEI
-
LHR
2 stops26h 15m
Multiple Airlines
Deal found 20/3£727
Sun 3/509:25
LHR
-
CEI
1 stop27h 20m
Singapore Airlines
Thu 11/615:45
CEI
-
LHR
1 stop30h 00m
Singapore Airlines
Deal found 21/3£1,118
Sun 3/521:25
LHR
-
CEI
1 stop14h 55m
Thai Airways
Thu 11/610:10
CEI
-
LHR
1 stop15h 05m
Thai Airways
Deal found 18/3£1,120
Fri 12/610:10
LGW
-
CEI
1 stop26h 25m
Singapore Airlines
Mon 15/619:30
CEI
-
LGW
1 stop20h 00m
Singapore Airlines
Deal found 20/3£1,479
Sun 3/506:55
STN
-
CEI
2 stops20h 45m
Multiple Airlines
Sun 10/518:55
CEI
-
STN
2 stops21h 00m
Multiple Airlines
Deal found 19/3£1,567

Find 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 22 March 2026.

Round-trip from

£502

One-way from

£301
11/5-27/6
  • 11/5-27/6
  • 4 total stops
  • 50h 15m total
  • London to Chiang Rai
Search Deals
3/9
  • 3/9
  • 2 total stops
  • 39h 55m total
  • London to Chiang Rai
Search Deals

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 22 March 2026.
Use the filters below to find and compare flights from London to Chiang Rai that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonChiang Rai

LGW - CEI

LGWCEI

London Gatwick

Mon 11/5

11:35-19:25

2 stops25h 50m

Chiang Rai

Sat 27/6

10:35-07:25

3 stops26h 50m

£618

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Sun 3/5

09:00-13:10

2 stops22h 10m

Chiang Rai

Thu 11/6

13:40-06:25

2 stops22h 45m

£727

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Mon 11/5

16:15-19:25

2 stops21h 10m

Chiang Rai

Sat 27/6

14:40-18:10

3 stops33h 30m

£730

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Sun 3/5

09:25-18:45

1 stop27h 20m

Chiang Rai

Sun 10/5

16:25-17:45

2 stops31h 20m

£893

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Sun 3/5

09:25-18:45

1 stop27h 20m

Chiang Rai

Thu 11/6

15:45-15:45

1 stop30h 00m

£1,118
Fastest return journey

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Sun 3/5

21:25-18:20

1 stop14h 55m

Chiang Rai

Thu 11/6

10:10-19:15

1 stop15h 05m

£1,120

LondonChiang Rai

LGW - CEI

LGWCEI

London Gatwick

Fri 12/6

10:10-18:35

1 stop26h 25m

Chiang Rai

Mon 15/6

19:30-09:30

1 stop20h 00m

£1,479

LondonChiang Rai

STN - CEI

STNCEI

London Stansted

Sun 3/5

06:55-09:40

2 stops20h 45m

Chiang Rai

Sun 10/5

18:55-09:55

2 stops21h 00m

£1,567
Cheapest one-way

LondonChiang Rai

LHR - CEI

LHRCEI

London Heathrow

Thu 3/9

21:20-15:55

2 stops36h 35m

£329

LondonChiang Rai

LGW - CEI

LGWCEI

London Gatwick

Tue 1/9

18:00-10:05

2 stops34h 05m

£333

Flights are sorted by cheapest return flights first.

Deals found on 22/3

Showing 1-10 of 17 resultsSorted by cheapest first
1
2

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, January is the cheapest month in which you can book a flight from London to Chiang Rai (average of £364). Flying from London to Chiang Rai in July is currently the most expensive (average of £642). 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 22 March 2026.
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
394 reviews
Check prices

Overall

7.8

Boarding

7.9

Entertainment

6.9

Crew

8.4

Comfort

7.6

Food

7.4

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
7.8
Good
394 reviews
Thai Airways
7.8
Good
394 reviews
Check prices

Overall

7.8

Boarding

7.9

Entertainment

6.9

Crew

8.4

Comfort

7.6

Food

7.4

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

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.

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

    Singapore Airlines can get you from London to Chiang Rai in just under 26h 25m. Your travel time can differ by up to . Airlines will cover a distance of 5567 mi.

  • 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 £754.

  • 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, January is the cheapest month in which you can book a flight from London to Chiang Rai (average of £364). Flying from London to Chiang Rai in July is currently the most expensive (average of £642). 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

Browse thousands of different options on Cheapflights for your next trip

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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 22 March 2026.
AirlineCheapestAverageFlexibilityOn-time
Thai AirwaysCheapest£754Average£918FlexibilityNo 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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