What is the cheapest airline that flies from London Heathrow to Udon Thani?

Gulf Air is the most popular carrier operating from London Heathrow to Udon Thani

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?

As of May 2026, there is 1 operator available to choose from 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.

£327 Cheap Flights from London Heathrow Airport to Udon Thani in 2026

Q: What is the typical price of a round-trip flight between London Heathrow Airport and Udon Thani?

Prices are currently low for flights on this route. Typical prices usually range from £872 to £856. The lowest price recently found on this route was £645.

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Find the cheapest flights from London Heathrow Airport to Udon Thani

Round-trip

One-way

Cheap return flights

Enter your travel dates to find the best prices.

14:40 - 20:55

LHR

UTH

24h 15m

2 stops

21:25 - 12:40

UTH

LHR

45h 15m

2 stops

£645Multiple Airlines

Sun, 6 Sep - Sun, 20 Sep

10:00 - 14:25

LHR

UTH

22h 25m

2 stops

14:55 - 06:55

UTH

LHR

22h 00m

2 stops

£646Multiple Airlines

Thu, 11 Jun - Tue, 16 Jun

10:00 - 13:25

LHR

UTH

21h 25m

2 stops

13:55 - 15:20

UTH

LHR

31h 25m

2 stops

£654Gulf Air

Wed, 10 Jun - Wed, 17 Jun

10:00 - 13:25

LHR

UTH

21h 25m

2 stops

13:55 - 15:20

UTH

LHR

31h 25m

2 stops

£712Gulf Air

Thu, 2 Jul - Thu, 9 Jul

10:00 - 13:25

LHR

UTH

21h 25m

2 stops

13:55 - 06:55

UTH

LHR

23h 00m

2 stops

£741Gulf Air

Tue, 16 Jun - Sat, 20 Jun

22:05 - 13:25

LHR

UTH

33h 20m

2 stops

13:55 - 06:55

UTH

LHR

23h 00m

2 stops

£750Gulf Air

Tue, 16 Jun - Sat, 20 Jun

22:05 - 13:25

LHR

UTH

33h 20m

2 stops

13:55 - 06:55

UTH

LHR

23h 00m

2 stops

£752Gulf Air

Tue, 16 Jun - Sat, 20 Jun

22:05 - 13:25

LHR

UTH

33h 20m

2 stops

13:55 - 06:55

UTH

LHR

23h 00m

2 stops

£770Gulf Air

Tue, 16 Jun - Sat, 20 Jun

21:20 - 09:45

LHR

UTH

30h 25m

2 stops

17:50 - 19:20

UTH

LHR

31h 30m

1 stop

£870Multiple Airlines

Sun, 6 Sep - Sun, 20 Sep

21:20 - 08:10

LHR

UTH

28h 50m

2 stops

08:40 - 19:20

UTH

LHR

16h 40m

1 stop

£874Multiple Airlines

Thu, 11 Jun - Tue, 16 Jun

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

11 Jun

LHR12:30London Heathrow

18h 55m

1 stop

UTH13:25Udon Thani

16 Jun

UTH21:25Udon Thani

15h 50m

1 stop

LHR07:15London Heathrow

£1,087

Thai Airways

10 Jun

LHR21:25London Heathrow

17h 30m

1 stop

UTH20:55Udon Thani

17 Jun

UTH08:40Udon Thani

16h 35m

1 stop

LHR19:15London Heathrow

£1,097

Thai Airways

11 Jun

LHR12:30London Heathrow

18h 55m

1 stop

UTH13:25Udon Thani

16 Jun

UTH08:40Udon Thani

16h 35m

1 stop

LHR19:15London Heathrow

£1,106

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

10 Jun

LHR10:00London Heathrow

21h 25m

2 stops

UTH13:25Udon Thani

17 Jun

UTH13:55Udon Thani

31h 25m

2 stops

LHR15:20London Heathrow

£654

Gulf Air

2 Jul

LHR10:00London Heathrow

21h 25m

2 stops

UTH13:25Udon Thani

9 Jul

UTH13:55Udon Thani

31h 25m

2 stops

LHR15:20London Heathrow

£712

Gulf Air

16 Jun

LHR10:00London Heathrow

21h 25m

2 stops

UTH13:25Udon Thani

20 Jun

UTH13:55Udon Thani

23h 00m

2 stops

LHR06:55London Heathrow

£741

momondo Fare Finder

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

Sun 6/9

14:40-20:55

2 stops24h 15m

Udon Thani

Sun 20/9

21:25-12:40

2 stops45h 15m

£645

Fastest return journey

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Thu 11/6

10:00-14:25

2 stops22h 25m

Udon Thani

Tue 16/6

14:55-06:55

2 stops22h 00m

£646

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Wed 10/6

10:00-13:25

2 stops21h 25m

Udon Thani

Wed 17/6

13:55-15:20

2 stops31h 25m

£654

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Thu 2/7

10:00-13:25

2 stops21h 25m

Udon Thani

Thu 9/7

13:55-15:20

2 stops31h 25m

£712

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Tue 16/6

10:00-13:25

2 stops21h 25m

Udon Thani

Sat 20/6

13:55-06:55

2 stops23h 00m

£741

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Tue 16/6

22:05-13:25

2 stops33h 20m

Udon Thani

Sat 20/6

13:55-06:55

2 stops23h 00m

£750

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Tue 16/6

22:05-13:25

2 stops33h 20m

Udon Thani

Sat 20/6

13:55-06:55

2 stops23h 00m

£752

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Tue 16/6

22:05-13:25

2 stops33h 20m

Udon Thani

Sat 20/6

13:55-06:55

2 stops23h 00m

£770

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Sun 6/9

21:20-09:45

2 stops30h 25m

Udon Thani

Sun 20/9

17:50-19:20

1 stop31h 30m

£870

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Thu 11/6

21:20-08:10

2 stops28h 50m

Udon Thani

Tue 16/6

08:40-19:20

1 stop16h 40m

£874

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

What is the typical price of a round-trip flight between London Heathrow Airport and Udon Thani?

What is the cheapest month to fly to Udon Thani?

The cheapest month to fly to Udon Thani from London Heathrow Airport is in September. Flight prices, which tend to average around £771, are often lower during this time because this is during the off-season. If you don’t want to visit Udon Thani in September, then you should wait until April to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of £778.

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	18h 05m
Direct flights	None

The fastest flight from London Heathrow Airport to Udon Thani takes 18h 05m

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.

Search flight deals

Frequently asked questions about flying from London Heathrow Airport to Udon Thani

How far is London Heathrow to Udon Thani by plane?
There are 5825.8 mi between London Heathrow and Udon Thani. 18h 05m 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?
As of May 2026, there is 1 operator available to choose from 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?
Based on momondo bookings for flights between London Heathrow Airport and Udon Thani, the leading airline is Thai Airways, making up 100% of the total bookings.

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 Airways	PriceFrom £742	Free Cancellation	Rating 7.9 401 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.