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Cheap flights from London to Udon Thani from £338

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 20/10. Fares are subject to change and may not be available on all flights or dates of travel.
LON — UTH
11 Sep — 18 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap 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 12 August 2026.

Sat 12/914:45 -
2 stops20h 30m
Sun 27/914:55 -
2 stops33h 50m
Deal found 10/8£623
Fri 25/910:00 -
2 stops21h 25m
Fri 2/1013:55 -
2 stops31h 25m
Deal found 11/8£674
Tue 3/1109:30 -
2 stops21h 10m
Tue 10/1114:10 -
2 stops31h 35m
Deal found 9/8£676
Thu 10/922:05 -
2 stops33h 20m
Mon 14/913:55 -
2 stops23h 00m
Deal found 11/8£691
Thu 3/910:00 -
2 stops21h 25m
Mon 7/913:55 -
2 stops31h 25m
Deal found 10/8£737
Tue 3/1122:00 -
2 stops40h 05m
Tue 10/1118:30 -
1 stop19h 10m
Deal found 9/8£738
Tue 13/1022:00 -
2 stops29h 45m
Fri 30/1010:10 -
1 stop16h 25m
Deal found 11/8£768
Fri 25/922:05 -
2 stops33h 20m
Fri 2/1021:25 -
1 stop15h 50m
Deal found 11/8£828

Find 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 12 August 2026.

Round-trip from

£623

One-way from

£338
12/9-27/9
  • 12/9-27/9
  • 4 total stops
  • 54h 20m total
  • London to Udon Thani
Search Deals
20/10
  • 20/10
  • 2 total stops
  • 35h 50m total
  • London to Udon Thani
Search Deals

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 12 August 2026.
Use the filters below to find and compare flights from London to Udon Thani that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonUdon Thani

LHR London Heathrow - UTH Udon Thani

LHRUTH

London Heathrow

Sat 12/9

09:30-17:15

2 stops25h 45m

Udon Thani

Sun 27/9

14:55-12:45

2 stops27h 50m

£623

LondonUdon Thani

LHR London Heathrow - UTH Udon Thani

LHRUTH

London Heathrow

Thu 10/9

22:05-13:25

2 stops33h 20m

Udon Thani

Mon 14/9

13:55-06:55

2 stops23h 00m

£691

LondonUdon Thani

LHR London Heathrow - UTH Udon Thani

LHRUTH

London Heathrow

Thu 3/9

10:00-13:25

2 stops21h 25m

Udon Thani

Mon 7/9

13:55-15:20

2 stops31h 25m

£737

LondonUdon Thani

LHR London Heathrow - UTH Udon Thani

LHRUTH

London Heathrow

Thu 3/9

18:30-08:10

2 stops31h 40m

Udon Thani

Mon 7/9

21:25-16:40

2 stops25h 15m

£1,095

LondonUdon Thani

LHR London Heathrow - UTH Udon Thani

LHRUTH

London Heathrow

Mon 21/12

21:40-13:40

2 stops33h 00m

Udon Thani

Tue 19/1

14:10-14:45

2 stops31h 35m

£1,162
Fastest return journey

LondonUdon Thani

LHR London Heathrow - UTH Udon Thani

LHRUTH

London Heathrow

Tue 22/12

08:50-13:40

2 stops21h 50m

Udon Thani

Sun 17/1

08:30-06:40

2 stops29h 10m

£1,334

LondonUdon Thani

LHR London Heathrow - UTH Udon Thani

LHRUTH

London Heathrow

Mon 21/12

06:25-13:40

2 stops48h 15m

Udon Thani

Sat 16/1

20:55-14:55

2 stops25h 00m

£1,365

LondonUdon Thani

LHR London Heathrow - UTH Udon Thani

LHRUTH

London Heathrow

Tue 22/12

06:25-13:40

2 stops48h 15m

Udon Thani

Tue 19/1

20:55-21:05

2 stops31h 10m

£1,442
Cheapest one-way

LondonUdon Thani

LHR London Heathrow - UTH Udon Thani

LHRUTH

London Heathrow

Tue 29/9

10:00-14:25

2 stops22h 25m

£365

LondonUdon Thani

LHR London Heathrow - UTH Udon Thani

LHRUTH

London Heathrow

Tue 29/9

10:00-13:25

2 stops21h 25m

£396

Flights are sorted by cheapest return flights first.

Deals found on 10/8

Showing 1-10 of 13 resultsSorted by cheapest first
1
2

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

No data available for this route at this time. Please check back soon.

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 12 August 2026.
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
7.9
Good
414 reviews
Check prices

Crew

8.4

Food

7.5

Entertainment

6.9

Boarding

8.0

Overall

7.9

Comfort

7.7

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
414 reviews
Thai Airways
7.9
Good
414 reviews
Check prices

Crew

8.4

Food

7.5

Entertainment

6.9

Boarding

8.0

Overall

7.9

Comfort

7.7

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 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 £691, Gulf Air can have you in Udon Thani from London in 33h 20m. 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 £739.

  • 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.
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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 12 August 2026.
AirlineCheapestAverageFlexibilityOn-time
Thai AirwaysCheapest£739Average£880FlexibilityNo 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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