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

Thai Airways 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 October 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.

£338 Cheap Flights from London Heathrow Airport to Udon Thani in 2026/27

Find the cheapest flights from London Heathrow Airport to Udon Thani

Return

One-way

Cheap return flights

Enter your travel dates to find the best prices.

08:45 - 18:00LHR London Heathrow-UTH Udon Thani

26h 15m2 stops New Delhi Indira Gandhi Intl Bangkok Suvarnabhumi

10:15 - 10:15UTH Udon Thani-LHR London Heathrow

30h 00m2 stops Bangkok Suvarnabhumi Mumbai Chhatrapati Shivaji Intl

£655Multiple Airlines

Sun, 14 Mar - Sun, 28 Mar

09:30 - 13:40LHR London Heathrow-UTH Udon Thani

21h 10m2 stops Manama Bahrain Intl Bangkok Suvarnabhumi

14:10 - 14:45UTH Udon Thani-LHR London Heathrow

31h 35m2 stops Bangkok Suvarnabhumi Manama Bahrain Intl

£720Gulf Air

Fri, 13 Nov - Tue, 17 Nov

10:30 - 13:40LHR London Heathrow-UTH Udon Thani

20h 10m2 stops Rome Fiumicino Bangkok Suvarnabhumi

20:00 - 09:40UTH Udon Thani-LHR London Heathrow

44h 40m2 stops Bangkok Suvarnabhumi Rome Fiumicino

£733Multiple Airlines

Sun, 29 Nov - Sun, 6 Dec

21:20 - 13:40LHR London Heathrow-UTH Udon Thani

33h 20m1 stop Bangkok Suvarnabhumi

20:00 - 19:05UTH Udon Thani-LHR London Heathrow

30h 05m1 stop Bangkok Suvarnabhumi

£756Multiple Airlines

Sun, 29 Nov - Sun, 6 Dec

21:10 - 09:40LHR London Heathrow-UTH Udon Thani

29h 30m2 stops Shenzhen Bangkok Suvarnabhumi

18:30 - 06:40UTH Udon Thani-LHR London Heathrow

19h 10m1 stop Bangkok Suvarnabhumi

£763Multiple Airlines

Sun, 15 Nov - Sun, 29 Nov

06:00 - 11:25LHR London Heathrow-UTH Udon Thani

22h 25m3 stops Zurich Abu Dhabi Zayed Intl Bangkok Suvarnabhumi

18:30 - 14:30UTH Udon Thani-LHR London Heathrow

27h 00m2 stops Bangkok Suvarnabhumi Abu Dhabi Zayed Intl

£778Multiple Airlines

Sun, 29 Nov - Sun, 6 Dec

12:30 - 08:55LHR London Heathrow-UTH Udon Thani

37h 25m2 stops Xiamen Gaoqi Intl Bangkok Suvarnabhumi

07:35 - 19:35UTH Udon Thani-LHR London Heathrow

19h 00m1 stop Bangkok Don Mueang Intl

£784Multiple Airlines

Fri, 13 Nov - Tue, 17 Nov

16:00 - 08:00LHR London Heathrow-UTH Udon Thani

33h 00m2 stops Doha Hamad Intl Bangkok Suvarnabhumi

14:10 - 11:05UTH Udon Thani-LHR London Heathrow

27h 55m2 stops Bangkok Suvarnabhumi Mumbai Chhatrapati Shivaji Intl

£791Multiple Airlines

Sun, 15 Nov - Sun, 29 Nov

21:35 - 19:30LHR London Heathrow-UTH Udon Thani

14h 55m1 stop Bangkok Suvarnabhumi

08:30 - 19:35UTH Udon Thani-LHR London Heathrow

18h 05m1 stop Bangkok Suvarnabhumi

£869Thai Airways

Fri, 13 Nov - Tue, 17 Nov

11:50 - 19:30LHR London Heathrow-UTH Udon Thani

24h 40m1 stop Bangkok Suvarnabhumi

14:10 - 06:40UTH Udon Thani-LHR London Heathrow

23h 30m1 stop Bangkok Suvarnabhumi

£887Thai Airways

Sun, 15 Nov - Sun, 29 Nov

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

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

13 Nov

LHR09:30London Heathrow

21h 10m

2 stops

UTH13:40Udon Thani

17 Nov

UTH14:10Udon Thani

31h 35m

2 stops

LHR14:45London Heathrow

£720

Gulf Air

8 Dec

LHR09:30London Heathrow

21h 10m

2 stops

UTH13:40Udon Thani

18 Jan

UTH14:10Udon Thani

23h 25m

2 stops

LHR06:35London Heathrow

£793

Gulf Air

30 Dec

LHR21:40London Heathrow

33h 00m

2 stops

UTH13:40Udon Thani

12 Feb

UTH14:10Udon Thani

23h 25m

2 stops

LHR06:35London Heathrow

£816

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

13 Nov

LHR21:35London Heathrow

14h 55m

1 stop

UTH19:30Udon Thani

17 Nov

UTH08:30Udon Thani

18h 05m

1 stop

LHR19:35London Heathrow

£869

Thai Airways

15 Nov

LHR11:50London Heathrow

24h 40m

1 stop

UTH19:30Udon Thani

29 Nov

UTH14:10Udon Thani

23h 30m

1 stop

LHR06:40London Heathrow

£887

Thai Airways

13 Dec

LHR21:35London Heathrow

14h 55m

1 stop

UTH19:30Udon Thani

20 Dec

UTH08:30Udon Thani

18h 05m

1 stop

LHR19:35London Heathrow

£905

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 London Heathrow - UTH Udon Thani

LHRUTH

London Heathrow

Sun 14/3

08:45-18:00

2 stops26h 15m

Udon Thani

Sun 28/3

10:15-10:15

2 stops30h 00m

£654

LondonUdon Thani

LHR London Heathrow - UTH Udon Thani

LHRUTH

London Heathrow

Fri 13/11

09:30-13:40

2 stops21h 10m

Udon Thani

Tue 17/11

14:10-14:45

2 stops31h 35m

£720

LondonUdon Thani

LHR London Heathrow - UTH Udon Thani

LHRUTH

London Heathrow

Sun 29/11

10:30-13:40

2 stops20h 10m

Udon Thani

Sun 6/12

20:00-09:40

2 stops44h 40m

£733

LondonUdon Thani

LHR London Heathrow - UTH Udon Thani

LHRUTH

London Heathrow

Sun 29/11

21:20-13:40

1 stop33h 20m

Udon Thani

Sun 6/12

20:00-19:05

1 stop30h 05m

£756

LondonUdon Thani

LHR London Heathrow - UTH Udon Thani

LHRUTH

London Heathrow

Sun 15/11

21:10-09:40

2 stops29h 30m

Udon Thani

Sun 29/11

18:30-06:40

1 stop19h 10m

£763

LondonUdon Thani

LHR London Heathrow - UTH Udon Thani

LHRUTH

London Heathrow

Sun 29/11

06:00-11:25

3 stops22h 25m

Udon Thani

Sun 6/12

18:30-14:30

2 stops27h 00m

£778

LondonUdon Thani

LHR London Heathrow - UTH Udon Thani

LHRUTH

London Heathrow

Fri 13/11

12:30-08:55

2 stops37h 25m

Udon Thani

Tue 17/11

07:35-19:35

1 stop19h 00m

£784

LondonUdon Thani

LHR London Heathrow - UTH Udon Thani

LHRUTH

London Heathrow

Sun 15/11

16:00-08:00

2 stops33h 00m

Udon Thani

Sun 29/11

14:10-11:05

2 stops27h 55m

£791

Fastest return journey

LondonUdon Thani

LHR London Heathrow - UTH Udon Thani

LHRUTH

London Heathrow

Fri 13/11

21:35-19:30

1 stop14h 55m

Udon Thani

Tue 17/11

08:30-19:35

1 stop18h 05m

£869

LondonUdon Thani

LHR London Heathrow - UTH Udon Thani

LHRUTH

London Heathrow

Sun 15/11

11:50-19:30

1 stop24h 40m

Udon Thani

Sun 29/11

14:10-06:40

1 stop23h 30m

£887

Flights are sorted by cheapest return flights first.

Showing 1-10 of 16 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?

Prices are currently low for flights on this route.

Typical prices usually range from £903 to £946.
The lowest price recently found on this route was £654.

What is the cheapest month to fly to Udon Thani?

The cheapest month to fly to Udon Thani from London Heathrow Airport is in August. Flight prices, which tend to average around £0, are often lower during this time because this is during the off-season. If you don’t want to visit Udon Thani in August, then you should wait until May to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of £855.

Can stopping save me money on London Heathrow Airport to Udon Thani flights?

You could potentially save up to 29% on your flight if you consider stops on a London Heathrow Airport to Udon Thani flight.

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

Best price found	£338
Fastest flight time	21h 10m
Direct flights	None

The best one-way flight to Udon Thani from London Heathrow Airport in the past 72 hours is £338. The best return flight deal from London Heathrow Airport to Udon Thani found on momondo in the last 72 hours is £654.

The fastest flight from London Heathrow Airport to Udon Thani takes 21h 10m

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. 21h 10m 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 October 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 £844	Free Cancellation	Rating 7.9 433 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.