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Cheap flights from London to Udon Thani from £359

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 3/11. Fares are subject to change and may not be available on all flights or dates of travel.
LON — UTH
16 Nov — 23 Nov1
1 adult
1 adult, Economy

Cheap flight deals from London to Udon Thani

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) to Udon Thani (UTH). 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 17 October 2025.

Round-trip from

£614

One-way from

£359

Popular in

January

Cheapest in

May

Average price

£806
12/2-22/2
  • 12/2-22/2
  • 4 total stops
  • 72h 40m total
  • London to Udon Thani
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3/11
  • 3/11
  • 3 total stops
  • 52h 10m total
  • London to Udon Thani
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£127 potential increase over avg. return price).
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Cheapest flight prices on average. 6% potential price decrease (£39 potential savings vs. average return price).
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Average for round-trip flights in October 2025
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Find flight deals from London to Udon Thani

Enter your travel dates to find the best prices.

Cheapest flights from London to Udon Thani
Explore the most affordable flight options available from London to Udon Thani. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 October 2025.

Sat 25/1012:30LHR - UTH
1 stop19h 10mThai Airways
Sat 15/1108:30UTH - LHR
1 stop18h 05mThai Airways
Deal found 16/10£938
Sat 25/1021:25LHR - UTH
1 stop17h 00mMultiple Airlines
Sat 15/1109:40UTH - LHR
2 stops39h 15mMultiple Airlines
Deal found 15/10£942
Fri 19/1209:00LHR - UTH
2 stops22h 25mMultiple Airlines
Fri 23/115:00UTH - LHR
2 stops23h 15mMultiple Airlines
Deal found 16/10£1,027
Thu 25/1211:50LHR - UTH
1 stop18h 50mThai Airways
Sat 17/120:50UTH - LHR
1 stop29h 45mThai Airways
Deal found 15/10£1,034
Thu 25/1211:50LHR - UTH
1 stop18h 50mMultiple Airlines
Sat 17/120:50UTH - LHR
2 stops20h 05mMultiple Airlines
Deal found 15/10£1,157

Cheapflights Fare Finder

 
Customise your flight search to find flights from London to Udon Thani 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 17 October 2025.
Use the filters below to find and compare flights from London to Udon Thani that are best for you.

Fly from

London

Fly to

Udon Thani

Route

Depart

Return

Price

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Thu 12/2

14:15-19:30

2 stops22h 15m

Udon Thani

Sun 22/2

20:00-15:25

2 stops50h 25m

£614

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Sun 15/3

21:50-13:40

2 stops32h 50m

Udon Thani

Thu 19/3

14:10-14:45

2 stops31h 35m

£701

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Thu 12/2

11:50-13:40

1 stop18h 50m

Udon Thani

Sun 22/2

20:50-06:40

1 stop16h 50m

£864

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Mon 1/12

11:50-13:40

1 stop18h 50m

Udon Thani

Sat 31/1

08:30-06:40

1 stop29h 10m

£899

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Fri 19/12

09:00-14:25

2 stops22h 25m

Udon Thani

Fri 23/1

15:00-07:15

2 stops23h 15m

£1,027

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Thu 25/12

11:50-13:40

1 stop18h 50m

Udon Thani

Sat 17/1

20:50-19:35

1 stop29h 45m

£1,034

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Mon 3/11

21:00-08:10

3 stops52h 10m

£359

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Mon 3/11

21:35-20:25

1 stop15h 50m

£523

Flights are sorted by cheapest return flights first.

Deals found on 16/10

Best time to book a flight from London to Udon Thani

Have a flexible travel schedule? Discover the best time to fly to Udon Thani 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 Udon Thani

What is the cheapest month to book a flight from London to Udon Thani?

Currently, May is the cheapest month in which you can book a flight from London to Udon Thani (average of £386). Flying from London to Udon Thani in January is currently the most expensive (average of £866). 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 Udon Thani

Get insights into the airlines that provide service to Udon Thani. 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 Udon Thani. Reviews last updated 17 October 2025.
Read through reviews of airlines operating flights from London to Udon Thani, such as Thai Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Thai Airways
7.8
Good
358 reviews
Check prices

Comfort

7.5

Crew

8.3

Overall

7.8

Boarding

7.9

Entertainment

6.9

Food

7.3

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
358 reviews
Thai Airways
7.8
Good
358 reviews
Check prices

Comfort

7.5

Crew

8.3

Overall

7.8

Boarding

7.9

Entertainment

6.9

Food

7.3

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 Udon Thani. 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 Udon Thani from London?

    If you book a flight to Udon Thani from London, you will be flying to Udon Thani, which is the city’s only airport. Udon Thani (UTH) is located 2.0 mi from the center of Udon Thani. There are 0 flights from London to Udon Thani per day from 1 airline.

  • How long is the flight from London to Udon Thani?

    For as low as £701, Gulf Air can have you in Udon Thani from London in 32h 50m. The distance from London to Udon Thani is about 5827 mi.

  • What is the cheapest airline to fly from London to Udon Thani round-trip?

    Flying on Thai Airways is currently your cheapest option to Udon Thani, with prices starting at £681. You may be able to fly from London to Udon Thani for 21% less than the average price by searching for this airline.

  • Can I find deals for flights from London to Udon Thani that include hotel bookings?

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

  • How can I find direct flights from London to Udon Thani?

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

  • Can I find deals for business class flights from London to Udon Thani?

    Yes. Cheapflights offers flight deals from London to Udon Thani 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 Udon Thani?

    Currently, May is the cheapest month in which you can book a flight from London to Udon Thani (average of £386). Flying from London to Udon Thani in January is currently the most expensive (average of £866). 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 Udon Thani

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 Udon Thani

Discover the top airline that operate flights from London to Udon Thani. 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 17 October 2025.
AirlineCheapestAverageFlexibilityOn-time
Thai AirwaysCheapest£681Average£770FlexibilityNo cancel feeOn-time77%
Search Thai Airways flights

Fly with Cheapflights

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How does Cheapflights help users find flights from London to Udon Thani?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from London to Udon Thani. 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 London to Udon Thani?

Cheapflights simply makes it quick and affordable to book flights from London to Udon Thani 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 Udon Thani with no change fees?

Need flexible booking options for your flight to Udon Thani from London? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from London to Udon Thani become cheaper?

Not ready to book yet? You can track prices for flights from London to Udon Thani on Cheapflights with our Price Alert feature and get notified when better prices are available.

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