Cheap flights from London to Udon Thani from £348

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 4/10. Fares are subject to change and may not be available on all flights or dates of travel.
LON — UTH
10 Sep — 17 Sep1
1 adult

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 5 September 2025.

Round-trip from

£633

One-way from

£348

Popular in

January

Cheapest in

May

Average price

£755
3/10-10/10
  • 3/10-10/10
  • 4 total stops
  • 68h 05m total
  • London to Udon Thani
4/10
  • 4/10
  • 2 total stops
  • 39h 50m total
  • London to Udon Thani
Highest demand for flights based on searches. 16% potential increase in price (£123 potential increase over avg. return price).
Cheapest flight prices on average. 6% potential price decrease (£39 potential savings vs. average return price).
Average for round-trip flights in September 2025

Find flight deals from London to Udon Thani

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 5 September 2025.

Fri 3/1009:30LHR - UTH
2 stops28h 20mMultiple Airlines
Fri 10/1009:00UTH - LHR
2 stops39h 45mMultiple Airlines
Deal found 3/9£633
Fri 3/1021:25LHR - UTH
1 stop17h 30mThai Airways
Fri 10/1021:25UTH - LHR
1 stop27h 50mThai Airways
Deal found 3/9£776
Sun 21/1221:35LHR - UTH
1 stop33h 05mThai Airways
Tue 20/114:10UTH - LHR
1 stop36h 25mThai Airways
Deal found 4/9£806
Fri 5/917:00LHR - UTH
2 stops21h 55mMultiple Airlines
Sun 14/921:25UTH - LHR
2 stops22h 45mMultiple Airlines
Deal found 3/9£876
Sun 21/1211:50LHR - UTH
1 stop18h 50mMultiple Airlines
Tue 20/120:50UTH - LHR
2 stops22h 20mMultiple Airlines
Deal found 4/9£911
Fri 5/912:30LHR - UTH
1 stop26h 25mThai Airways
Sun 14/921:25UTH - LHR
1 stop27h 50mThai Airways
Deal found 3/9£930
Thu 25/1221:35LHR - UTH
1 stop15h 45mThai Airways
Sat 17/114:10UTH - LHR
1 stop36h 25mThai Airways
Deal found 4/9£1,045

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 5 September 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

Fri 3/10

09:30-19:50

2 stops28h 20m

Udon Thani

Fri 10/10

09:00-18:45

2 stops39h 45m

£633

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Fri 3/10

21:25-20:55

1 stop17h 30m

Udon Thani

Fri 10/10

21:25-19:15

1 stop27h 50m

£776

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Sun 21/12

21:35-13:40

1 stop33h 05m

Udon Thani

Tue 20/1

14:10-19:35

1 stop36h 25m

£806

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Sun 21/12

11:50-13:40

1 stop18h 50m

Udon Thani

Tue 20/1

20:50-12:10

2 stops22h 20m

£911

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Thu 25/12

21:35-20:20

1 stop15h 45m

Udon Thani

Sat 17/1

14:10-19:35

1 stop36h 25m

£1,045

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Thu 25/12

21:35-20:20

1 stop15h 45m

Udon Thani

Sat 17/1

20:50-09:55

2 stops20h 05m

£1,129

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Sat 4/10

22:00-19:50

2 stops39h 50m

£348

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Sat 4/10

21:25-08:10

1 stop28h 45m

£559

Flights are sorted by cheapest return flights first.

Deals found on 3/9

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

How much does it cost for a return flight from London to Udon Thani?

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 5 September 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.

Crew

8.3

Boarding

7.9

Entertainment

6.9

Overall

7.8

Food

7.3

Comfort

7.5

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.

Crew

8.3

Boarding

7.9

Entertainment

6.9

Overall

7.8

Food

7.3

Comfort

7.5

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 £776, Thai Airways can have you in Udon Thani from London in 17h 30m. 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 £682. 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.

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.

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 5 September 2025.
AirlineCheapestAverageFlexibilityOn-time
Thai AirwaysCheapest£682Average£782FlexibilityNo cancel feeOn-time77%
Search Thai Airways flights

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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.

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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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