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Cheap flights from London Heathrow Airport to Udon Thani from £690

This is the cheapest return 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 4/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from London Heathrow Airport to Udon Thani

Cheap return flights

Logo
13:50 - 20:20LHR-UTH
23h 30m2 stops
Logo
14:10 - 05:55UTH-LHR
22h 45m2 stops
£690
Find Deal
Tue, 4 Nov - Tue, 2 Dec
Logo
21:45 - 08:10LHR-UTH
28h 25m2 stops
Logo
21:25 - 15:15UTH-LHR
23h 50m2 stops
£713
Find Deal
Fri, 5 Sep - Sun, 14 Sep
Logo
17:00 - 20:55LHR-UTH
21h 55m2 stops
Logo
21:25 - 14:05UTH-LHR
22h 40m2 stops
£727
Find Deal
Fri, 5 Sep - Sun, 14 Sep
Thai Airways Logo
11:50 - 20:20LHR-UTH
25h 30m1 stop
Thai Airways Logo
14:10 - 06:40UTH-LHR
23h 30m1 stop
£797Thai Airways
Find Deal
Tue, 4 Nov - Tue, 2 Dec
Logo
06:40 - 13:40LHR-UTH
24h 00m2 stops
Logo
20:50 - 06:40UTH-LHR
16h 50m1 stop
£853
Find Deal
Tue, 4 Nov - Tue, 2 Dec
Logo
21:35 - 13:25LHR-UTH
33h 50m1 stop
Logo
13:55 - 19:20UTH-LHR
35h 25m1 stop
£853
Find Deal
Fri, 5 Sep - Sun, 14 Sep
Logo
06:00 - 13:25LHR-UTH
25h 25m2 stops
Logo
21:25 - 19:20UTH-LHR
27h 55m1 stop
£923
Find Deal
Fri, 5 Sep - Sun, 14 Sep
Logo
19:25 - 20:20LHR-UTH
17h 55m2 stops
Logo
20:50 - 08:20UTH-LHR
18h 30m2 stops
£1,238
Find Deal
Thu, 25 Dec - Sat, 17 Jan
Logo
21:20 - 20:20LHR-UTH
16h 00m1 stop
Logo
14:10 - 19:05UTH-LHR
35h 55m1 stop
£1,646
Find Deal
Thu, 25 Dec - Sat, 17 Jan
Logo
21:35 - 20:55LHR-UTH
17h 20m1 stop
Logo
13:55 - 05:55UTH-LHR
22h 00m2 stops
£2,635
Find Deal
Fri, 5 Sep - Sun, 14 Sep

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 17 August 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

Tue 4/11

13:50-20:20

2 stops23h 30m

Udon Thani

Tue 2/12

14:10-05:55

2 stops22h 45m

£690

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Fri 5/9

21:45-08:10

2 stops28h 25m

Udon Thani

Sun 14/9

21:25-15:15

2 stops23h 50m

£713

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Fri 5/9

17:00-20:55

2 stops21h 55m

Udon Thani

Sun 14/9

21:25-14:05

2 stops22h 40m

£727

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Tue 4/11

11:50-20:20

1 stop25h 30m

Udon Thani

Tue 2/12

14:10-06:40

1 stop23h 30m

£797

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Tue 4/11

06:40-13:40

2 stops24h 00m

Udon Thani

Tue 2/12

20:50-06:40

1 stop16h 50m

£853

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Fri 5/9

21:35-13:25

1 stop33h 50m

Udon Thani

Sun 14/9

13:55-19:20

1 stop35h 25m

£853

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Fri 5/9

06:00-13:25

2 stops25h 25m

Udon Thani

Sun 14/9

21:25-19:20

1 stop27h 55m

£923

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Thu 25/12

19:25-20:20

2 stops17h 55m

Udon Thani

Sat 17/1

20:50-08:20

2 stops18h 30m

£1,238

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Thu 25/12

21:20-20:20

1 stop16h 00m

Udon Thani

Sat 17/1

14:10-19:05

1 stop35h 55m

£1,646

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Fri 5/9

21:35-20:55

1 stop17h 20m

Udon Thani

Sun 14/9

13:55-05:55

2 stops22h 00m

£2,635

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

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 £698, 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 February to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of £739.

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 £777. 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 £921.

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 £825. 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 £828. 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

Best price found

£690

Fastest flight time

16h 00m

Direct flights

None

Airports in Udon Thani

1 airport
The best flight deal from London Heathrow Airport to Udon Thani found on momondo in the last 72 hours is £690
The fastest flight from London Heathrow Airport to Udon Thani takes 16h 00m
There are no direct flights from London Heathrow Airport to Udon Thani. Popular non-direct route for this connection is London Heathrow Airport - Udon Thani Airport.
There is 1 airport near Udon Thani: Udon Thani (UTH)
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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. 16h 00m 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 £676Free CancellationRating
7.8
343 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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