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

Thai Airways is the most popular carrier operating from London to Udon Thani

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

Prices for flights from London to Udon Thani Airport are updated daily.

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

As of October 2025, there is 1 operator available to choose from for flights from London to Udon Thani Airport.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London to Udon Thani Airport.

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

The travel and health documents you'll need for your trip to Udon Thani Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Udon Thani Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

£592 Cheap Flights from London to Udon Thani in 2025/26

1 adult

0 bags

Voted winner of Europe's Best Travel App 2023

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

Find the cheapest flights from London to Udon Thani

Round-trip

One-way

Cheap return flights

Enter your travel dates to find the best prices.

08:45 - 19:10LHR-UTH

27h 25m3 stops

16:15 - 19:20UTH-LHR

34h 05m3 stops

£592Multiple Airlines

Find Deal

Wed, 12 Nov - Thu, 20 Nov

08:45 - 17:15LHR-UTH

25h 30m2 stops

18:30 - 19:20UTH-LHR

31h 50m3 stops

£598Multiple Airlines

Find Deal

Wed, 12 Nov - Thu, 20 Nov

10:25 - 19:30LHR-UTH

26h 05m2 stops

08:40 - 15:25UTH-LHR

37h 45m2 stops

£609Multiple Airlines

Find Deal

Mon, 1 Dec - Sat, 31 Jan

21:50 - 13:40LHR-UTH

32h 50m2 stops

14:10 - 14:45UTH-LHR

31h 35m2 stops

£792Gulf Air

Find Deal

Mon, 1 Dec - Sat, 31 Jan

21:50 - 13:40LHR-UTH

32h 50m2 stops

14:10 - 06:35UTH-LHR

23h 25m2 stops

£852Gulf Air

Find Deal

Sun, 15 Mar - Thu, 19 Mar

21:50 - 13:40LHR-UTH

32h 50m2 stops

14:10 - 06:35UTH-LHR

23h 25m2 stops

£858Gulf Air

Find Deal

Sun, 15 Mar - Thu, 19 Mar

11:50 - 13:40LHR-UTH

18h 50m1 stop

14:10 - 06:40UTH-LHR

23h 30m1 stop

£921Thai Airways

Find Deal

Mon, 1 Dec - Sat, 31 Jan

11:50 - 20:25LHR-UTH

25h 35m1 stop

14:10 - 19:35UTH-LHR

36h 25m1 stop

£1,100Thai Airways

Find Deal

Thu, 25 Dec - Sat, 17 Jan

11:50 - 20:25LHR-UTH

25h 35m1 stop

14:10 - 19:35UTH-LHR

36h 25m1 stop

£1,100Thai Airways

Find Deal

Thu, 25 Dec - Sat, 17 Jan

21:35 - 08:00LHR-UTH

27h 25m1 stop

20:50 - 19:35UTH-LHR

29h 45m1 stop

£1,198Thai Airways

Find Deal

Sun, 15 Mar - Thu, 19 Mar

Gulf Air flights from London to Udon Thani

Our best Gulf Air deals on London to Udon Thani flight tickets

Gulf Air

1 Dec

LHR21:50London Heathrow

32h 50m

2 stops

UTH13:40Udon Thani

31 Jan

UTH14:10Udon Thani

31h 35m

2 stops

LHR14:45London Heathrow

£792

Find similar

Gulf Air

15 Mar

LHR21:50London Heathrow

32h 50m

2 stops

UTH13:40Udon Thani

19 Mar

UTH14:10Udon Thani

23h 25m

2 stops

LHR06:35London Heathrow

£852

Find similar

Gulf Air

15 Mar

LHR21:50London Heathrow

32h 50m

2 stops

UTH13:40Udon Thani

19 Mar

UTH14:10Udon Thani

23h 25m

2 stops

LHR06:35London Heathrow

£858

Find similar

Thai Airways flights from London to Udon Thani

Our best Thai Airways deals on London to Udon Thani flight tickets

Thai Airways

1 Dec

LHR11:50London Heathrow

18h 50m

1 stop

UTH13:40Udon Thani

31 Jan

UTH14:10Udon Thani

23h 30m

1 stop

LHR06:40London Heathrow

£921

Find similar

Thai Airways

25 Dec

LHR11:50London Heathrow

25h 35m

1 stop

UTH20:25Udon Thani

17 Jan

UTH14:10Udon Thani

36h 25m

1 stop

LHR19:35London Heathrow

£1,100

Find similar

Thai Airways

25 Dec

LHR11:50London Heathrow

25h 35m

1 stop

UTH20:25Udon Thani

17 Jan

UTH14:10Udon Thani

36h 25m

1 stop

LHR19:35London Heathrow

£1,100

Find similar

Fly from

Fly to

Route

Depart

Return

Price

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Wed 12/11

08:45-19:10

3 stops27h 25m

Udon Thani

Thu 20/11

16:15-19:20

3 stops34h 05m

£592

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Wed 12/11

08:45-17:15

2 stops25h 30m

Udon Thani

Thu 20/11

18:30-19:20

3 stops31h 50m

£598

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Mon 1/12

10:25-19:30

2 stops26h 05m

Udon Thani

Sat 31/1

08:40-15:25

2 stops37h 45m

£609

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Mon 1/12

21:50-13:40

2 stops32h 50m

Udon Thani

Sat 31/1

14:10-14:45

2 stops31h 35m

£792

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Sun 15/3

21:50-13:40

2 stops32h 50m

Udon Thani

Thu 19/3

14:10-06:35

2 stops23h 25m

£852

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Sun 15/3

21:50-13:40

2 stops32h 50m

Udon Thani

Thu 19/3

14:10-06:35

2 stops23h 25m

£858

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Mon 1/12

11:50-13:40

1 stop18h 50m

Udon Thani

Sat 31/1

14:10-06:40

1 stop23h 30m

£921

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Thu 25/12

11:50-20:25

1 stop25h 35m

Udon Thani

Sat 17/1

14:10-19:35

1 stop36h 25m

£1,100

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Thu 25/12

11:50-20:25

1 stop25h 35m

Udon Thani

Sat 17/1

14:10-19:35

1 stop36h 25m

£1,100

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Sun 15/3

21:35-08:00

1 stop27h 25m

Udon Thani

Thu 19/3

20:50-19:35

1 stop29h 45m

£1,198

Flights are sorted by cheapest return flights first.

Showing 1-10 of 13 resultsSorted by cheapest first

How to get the cheapest flight ticket from London 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 cheapest month to fly to Udon Thani?

The cheapest month to fly to Udon Thani from London is in May. Flight prices, which tend to average around £718, are often lower during this time because this is during the off-season. If you don’t want to visit Udon Thani in May, then you should wait until February to fly from London, when ticket prices are also cheap, with an average price of £760.

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

The cheapest day to depart from London 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 £799. On the other hand, Tuesday is the most expensive day to depart from London because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £948.

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 to Udon Thani in the evening for as low as £848. 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 £852. 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 to Udon Thani

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

Estimated return price

Cheap London to Udon Thani (LON to UTH) flight deals and tips

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

Direct flights	None

There are no direct flights from London to Udon Thani. There are no popular flight routes from London to Udon Thani.

Search flight deals

How far is London to Udon Thani by plane?
A flight from London to Udon Thani will travel around 5811.8 mi. In terms of flight time, this usually takes a little over 15h 10m.
When did momondo last update prices for flights from London to Udon Thani Airport?
Prices for flights from London to Udon Thani Airport are updated daily.
How many operators does momondo search for flights from London to Udon Thani Airport?
As of October 2025, there is 1 operator available to choose from for flights from London to Udon Thani Airport.
How old do you have to be to fly from London to Udon Thani Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London to Udon Thani Airport.
What documentation or ID do you need to fly to Udon Thani Airport?
The travel and health documents you'll need for your trip to Udon Thani Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Udon Thani Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from London to Udon Thani?
Based on momondo bookings for flights between London and Udon Thani, the leading airline is Thai Airways, making up 100% of the total bookings.

Best airlines flying from London to Udon Thani

Compare and see reviews for airlines that fly from London to Udon Thani with momondo

Airline	Rating	Free Cancellation	Price
Thai Airways	PriceFrom £694	Free Cancellation	Rating 7.8 361 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?

Yes. All flights to Udon Thani from London on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo provides multiple filters to help you find the best flight to Udon Thani from London. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes momondo offers price alerts on flights to Udon Thani from London. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.