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Cheap flights from London Heathrow Airport to Udon Thani from £340

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Udon Thani departing on 7/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
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Find the cheapest flights from London Heathrow Airport to Udon Thani

Cheap return flights

Enter your travel dates to find the best prices.
Gulf Air Logo
22:05 - 13:25
LHR
-
UTH
33h 20m2 stops
Gulf Air Logo
13:55 - 15:20
UTH
-
LHR
31h 25m2 stops
£1,007Gulf Air
Sun, 7 Jun - Wed, 10 Jun
Gulf Air Logo
10:00 - 13:25
LHR
-
UTH
21h 25m2 stops
Gulf Air Logo
13:55 - 06:55
UTH
-
LHR
23h 00m2 stops
£1,007Gulf Air
Sun, 7 Jun - Wed, 10 Jun
Multiple Airlines Logo
13:30 - 19:30
LHR
-
UTH
23h 00m2 stops
Multiple Airlines Logo
20:00 - 22:40
UTH
-
LHR
33h 40m2 stops
£1,140Multiple Airlines
Mon, 5 Jan - Sat, 10 Jan
Multiple Airlines Logo
11:50 - 13:40
LHR
-
UTH
18h 50m1 stop
Multiple Airlines Logo
20:50 - 18:55
UTH
-
LHR
53h 05m2 stops
£1,170Multiple Airlines
Mon, 5 Jan - Sat, 10 Jan
Thai Airways Logo
21:35 - 20:25
LHR
-
UTH
15h 50m1 stop
Thai Airways Logo
20:50 - 19:35
UTH
-
LHR
29h 45m1 stop
£1,268Thai Airways
Thu, 25 Dec - Sat, 17 Jan
Multiple Airlines Logo
11:50 - 20:25
LHR
-
UTH
25h 35m1 stop
Multiple Airlines Logo
20:50 - 09:55
UTH
-
LHR
20h 05m2 stops
£1,410Multiple Airlines
Thu, 25 Dec - Sat, 17 Jan
Multiple Airlines Logo
11:50 - 13:40
LHR
-
UTH
18h 50m1 stop
Multiple Airlines Logo
20:50 - 19:05
UTH
-
LHR
29h 15m1 stop
£1,432Multiple Airlines
Mon, 5 Jan - Sat, 10 Jan
Multiple Airlines Logo
14:55 - 20:25
LHR
-
UTH
22h 30m2 stops
Multiple Airlines Logo
20:50 - 12:15
UTH
-
LHR
22h 25m2 stops
£1,882Multiple Airlines
Sat, 27 Dec - Sun, 4 Jan
Multiple Airlines Logo
19:25 - 20:25
LHR
-
UTH
18h 00m2 stops
Multiple Airlines Logo
08:30 - 21:40
UTH
-
LHR
20h 10m2 stops
£2,144Multiple Airlines
Thu, 25 Dec - Sat, 17 Jan
Multiple Airlines Logo
13:50 - 20:25
LHR
-
UTH
23h 35m2 stops
Multiple Airlines Logo
20:50 - 17:25
UTH
-
LHR
27h 35m2 stops
£2,255Multiple Airlines
Sat, 27 Dec - Sun, 4 Jan

Gulf Air flights from London Heathrow Airport to Udon Thani

Our best Gulf Air deals on London Heathrow Airport to Udon Thani flight tickets
Gulf Air
7 Jun
LHR10:00London Heathrow
21h 25m
2 stops
UTH13:25Udon Thani
10 Jun
UTH13:55Udon Thani
31h 25m
2 stops
LHR15:20London Heathrow
£767
Find similar
Gulf Air
7 Jun
LHR22:05London Heathrow
33h 20m
2 stops
UTH13:25Udon Thani
10 Jun
UTH13:55Udon Thani
31h 25m
2 stops
LHR15:20London Heathrow
£1,007
Find similar
Gulf Air
7 Jun
LHR22:05London Heathrow
33h 20m
2 stops
UTH13:25Udon Thani
10 Jun
UTH13:55Udon Thani
23h 00m
2 stops
LHR06:55London Heathrow
£1,007
Find similar

Thai Airways flights from London Heathrow Airport to Udon Thani

Our best Thai Airways deals on London Heathrow Airport to Udon Thani flight tickets
Thai Airways
25 Dec
LHR11:50London Heathrow
18h 50m
1 stop
UTH13:40Udon Thani
17 Jan
UTH20:50Udon Thani
29h 45m
1 stop
LHR19:35London Heathrow
£2,416
Find similar
Thai Airways
27 Dec
LHR11:50London Heathrow
25h 35m
1 stop
UTH20:25Udon Thani
4 Jan
UTH08:30Udon Thani
18h 05m
1 stop
LHR19:35London Heathrow
£2,452
Find similar
Thai Airways
25 Dec
LHR21:35London Heathrow
15h 50m
1 stop
UTH20:25Udon Thani
17 Jan
UTH14:10Udon Thani
36h 25m
1 stop
LHR19:35London Heathrow
£3,053
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from London Heathrow Airport 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, momondo users made 279,928 searches. Data last updated 12 December 2025.
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

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Sun 7/6

22:05-13:25

2 stops33h 20m

Udon Thani

Wed 10/6

13:55-15:20

2 stops31h 25m

£1,007

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Sun 7/6

10:00-13:25

2 stops21h 25m

Udon Thani

Wed 10/6

13:55-06:55

2 stops23h 00m

£1,007

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Mon 5/1

13:30-19:30

2 stops23h 00m

Udon Thani

Sat 10/1

20:00-22:40

2 stops33h 40m

£1,140

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Mon 5/1

11:50-13:40

1 stop18h 50m

Udon Thani

Sat 10/1

20:50-18:55

2 stops53h 05m

£1,170

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Thu 25/12

21:35-20:25

1 stop15h 50m

Udon Thani

Sat 17/1

20:50-19:35

1 stop29h 45m

£1,268

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Thu 25/12

11:50-20:25

1 stop25h 35m

Udon Thani

Sat 17/1

20:50-09:55

2 stops20h 05m

£1,410

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Mon 5/1

11:50-13:40

1 stop18h 50m

Udon Thani

Sat 10/1

20:50-19:05

1 stop29h 15m

£1,432

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Sat 27/12

14:55-20:25

2 stops22h 30m

Udon Thani

Sun 4/1

20:50-12:15

2 stops22h 25m

£1,882

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Thu 25/12

19:25-20:25

2 stops18h 00m

Udon Thani

Sat 17/1

08:30-21:40

2 stops20h 10m

£2,144

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Sat 27/12

13:50-20:25

2 stops23h 35m

Udon Thani

Sun 4/1

20:50-17:25

2 stops27h 35m

£2,255

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Udon Thani from

How to get the cheapest flight ticket from London Heathrow Airport to Udon Thani

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Udon Thani?

The cheapest month to fly to Udon Thani from London Heathrow Airport is in October. Flight prices, which tend to average around £724, are often lower during this time because this is during the off-season. If you don’t want to visit Udon Thani in October, then you should wait until April to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of £762.

What is the cheapest day to depart on your flight to Udon Thani?

The cheapest day to depart from London Heathrow Airport to Udon Thani is on a Friday. Travellers who choose to depart for Udon Thani on a Friday will often find tickets for as low as £786. On the other hand, Tuesday is the most expensive day to depart from London Heathrow Airport because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £933.

What is the cheapest time of day to depart on your flight to Udon Thani?

According to our data, the cheapest time of day to fly to Udon Thani is in the evening. momondo users have found flights departing from London Heathrow Airport to Udon Thani in the evening for as low as £835. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Udon Thani are more costly in the morning, with an average ticket price of £839. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

When to book flights from London Heathrow Airport to Udon Thani

Are you open to changing your travel dates? Check out the ideal times to fly from London Heathrow Airport to Udon Thani according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap London Heathrow Airport to Udon Thani (LHR to UTH) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Udon Thani

Fastest flight time

21h 25m

Direct flights

None
The fastest flight from London Heathrow Airport to Udon Thani takes 21h 25m
There are no direct flights from London Heathrow Airport to Udon Thani. There are no popular flight routes from London Heathrow Airport to Udon Thani.
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  • How far is London Heathrow to Udon Thani by plane?

    There are 5825.8 mi between London Heathrow and Udon Thani. 21h 25m is a normal flight duration for this route.

  • When did momondo last update prices for flights from London Heathrow Airport to Udon Thani Airport?

    Prices for flights from London Heathrow Airport to Udon Thani Airport were last updated today.

  • How many operators does momondo search for flights from London Heathrow Airport to Udon Thani Airport?

  • How old do you have to be to fly from London Heathrow Airport to Udon Thani Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London Heathrow Airport to Udon Thani Airport.

  • What documentation or ID do you need to fly to Udon Thani Airport?

    The required travel and health documents for your Udon Thani Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Udon Thani Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from London Heathrow Airport to Udon Thani?

Best airlines flying from London Heathrow Airport to Udon Thani

Compare and see reviews for airlines that fly from London Heathrow Airport to Udon Thani with momondo
Airline
Rating
Free Cancellation
Price
Thai AirwaysPriceFrom £683Free CancellationRating
7.8
366 reviews
Search Thai Airways flights

Why use momondo?

Why should I use momondo to find a flight deal from London to Udon Thani?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Udon Thani from London.

Can I find flights from London to Udon Thani with flexible booking policies on momondo?

momondo does allow users to show only those flights to Udon Thani from London which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from London to Udon Thani?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from London to Udon Thani.

I’m not ready to book a flight from London to Udon Thani right now. Can momondo alert me if prices change?

If you are not ready to book a flight from London to Udon Thani now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Udon Thani and let you know when they change.

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