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Cheap flights from London Heathrow Airport to Udon Thani from £371

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 21/10. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — UTH
30 Jul — 6 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to Udon Thani

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Udon Thani
Explore the most affordable flight options available from Heathrow to Udon Thani. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 June 2026.

Wed 21/1010:50
LHR
-
UTH
2 stops20h 35m
Multiple Airlines
Wed 4/1114:10
UTH
-
LHR
2 stops30h 50m
Multiple Airlines
Deal found 26/6£680
Tue 13/1015:05
LHR
-
UTH
2 stops23h 50m
Multiple Airlines
Tue 17/1120:55
UTH
-
LHR
2 stops27h 30m
Multiple Airlines
Deal found 26/6£683
Fri 13/1121:50
LHR
-
UTH
2 stops32h 50m
Gulf Air
Tue 17/1114:10
UTH
-
LHR
2 stops23h 25m
Gulf Air
Deal found 29/6£762
Thu 13/808:25
LHR
-
UTH
2 stops30h 30m
Multiple Airlines
Thu 20/813:55
UTH
-
LHR
2 stops30h 10m
Multiple Airlines
Deal found 29/6£765
Thu 2/722:05
LHR
-
UTH
2 stops33h 20m
Gulf Air
Tue 7/713:55
UTH
-
LHR
2 stops31h 25m
Gulf Air
Deal found 30/6£786
Sat 19/919:30
LHR
-
UTH
2 stops30h 40m
Multiple Airlines
Sat 31/1020:55
UTH
-
LHR
2 stops31h 45m
Multiple Airlines
Deal found 30/6£797

Find flight deals from Heathrow to Udon Thani

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) 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 30 June 2026.

Round-trip from

£680

One-way from

£371

Popular in

March

Cheapest in

August
21/10-4/11
  • 21/10-4/11
  • 4 total stops
  • 51h 25m total
  • London to Udon Thani
Search Deals
21/10
  • 21/10
  • 2 total stops
  • 24h 15m total
  • London to Udon Thani
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£65 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£37 potential savings vs. average return price).
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow 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 30 June 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Udon Thani that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Fri 13/11

21:50-13:40

2 stops32h 50m

Udon Thani

Tue 17/11

14:10-06:35

2 stops23h 25m

£762

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Thu 13/8

08:25-20:55

2 stops30h 30m

Udon Thani

Thu 20/8

13:55-14:05

2 stops30h 10m

£765

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Wed 21/10

08:40-20:55

2 stops30h 15m

Udon Thani

Wed 4/11

08:30-08:15

3 stops30h 45m

£847
Fastest return journey

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Tue 13/10

21:35-20:55

1 stop17h 20m

Udon Thani

Tue 17/11

08:30-19:05

1 stop17h 35m

£902

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Fri 31/7

21:25-08:10

1 stop28h 45m

Udon Thani

Fri 21/8

08:40-19:15

1 stop16h 35m

£993

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Fri 13/11

06:25-08:00

2 stops18h 35m

Udon Thani

Tue 17/11

20:55-14:55

2 stops49h 00m

£1,001

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Sat 19/9

21:35-20:55

1 stop17h 20m

Udon Thani

Sat 31/10

08:30-19:05

1 stop17h 35m

£1,070

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Fri 31/7

08:25-13:25

2 stops23h 00m

Udon Thani

Fri 21/8

21:25-14:05

2 stops22h 40m

£1,090
Cheapest one-way

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Tue 20/10

07:05-16:10

3 stops27h 05m

£432
Fastest single journey

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Tue 20/10

12:30-13:25

1 stop18h 55m

£564

Flights are sorted by cheapest return flights first.

Deals found on 26/6

Sorted by cheapest first

Best time to book a flight from Heathrow to Udon Thani

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

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 30 June 2026.
Read reviews from past customers who have flown with Thai Airways from London Heathrow Airport to Udon Thani. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Thai Airways
7.9
Good
407 reviews
Check prices

Comfort

7.7

Crew

8.4

Overall

7.9

Boarding

8.0

Entertainment

6.9

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
7.9
Good
407 reviews
Thai Airways
7.9
Good
407 reviews
Check prices

Comfort

7.7

Crew

8.4

Overall

7.9

Boarding

8.0

Entertainment

6.9

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 Heathrow 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 Heathrow?

    Udon Thani (UTH) is the airport you will fly into if you book a flight from London Heathrow to Udon Thani. You should not have trouble finding flights to Udon Thani from London Heathrow; the airport handles an average of 0 inbound flights from London Heathrow per day. You should also have plenty of airline options to choose from since 1 airline has flights to the Udon Thani airport from London Heathrow. It is only a 2.0 mi journey from Udon Thani (UTH) to Udon Thani’s city center.

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

    For as low as £762, Gulf Air can have you in Udon Thani from London Heathrow Airport in 32h 50m. There are 5827 mi between London Heathrow Airport and Udon Thani.

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

    Our cheapest airline available from London Heathrow Airport to Udon Thani is Thai Airways. Our recent data shows that you can find tickets from as low as £752 on this airline. Users have found that Thai Airways is 22% cheaper than the other options available to this destination.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Heathrow 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

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Heathrow to Udon Thani

Discover the top airline that operate flights from Heathrow 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 30 June 2026.
AirlineCheapestAverageFlexibilityOn-time
Thai AirwaysCheapest£752Average£878FlexibilityNo 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 Heathrow to Udon Thani?

Cheapflights helps you search for flights from Heathrow to Udon Thani 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 Heathrow to Udon Thani?

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from Heathrow to Udon Thani, users can toggle the no change fees filter when performing a flight search.

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

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

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