Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from London to Udon Thani from £486

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from London to Udon Thani departing on 19/9. 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
Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

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

Trusted and free

Trusted and free

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

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from London to Udon Thani

Cheap return flights

Logo
10:00 - 19:50LHR-UTH
27h 50m2 stops
Logo
08:40 - 07:30UTH-LHR
29h 50m2 stops
£486
Find Deal
Fri, 19 Sep - Sun, 16 Nov
Logo
09:30 - 19:50LHR-UTH
28h 20m2 stops
Logo
08:40 - 14:30UTH-LHR
36h 50m2 stops
£583
Find Deal
Sun, 21 Sep - Sun, 16 Nov
Logo
14:45 - 08:10LHR-UTH
35h 25m2 stops
Logo
21:25 - 15:15UTH-LHR
23h 50m2 stops
£702
Find Deal
Fri, 5 Sep - Sun, 14 Sep
Logo
14:45 - 13:25LHR-UTH
40h 40m2 stops
Logo
21:25 - 15:15UTH-LHR
23h 50m2 stops
£703
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
£730
Find Deal
Fri, 5 Sep - Sun, 14 Sep
Logo
22:05 - 09:45LHR-UTH
29h 40m2 stops
Logo
08:40 - 19:05UTH-LHR
17h 25m1 stop
£757
Find Deal
Fri, 19 Sep - Sun, 16 Nov
Logo
21:35 - 20:55LHR-UTH
17h 20m1 stop
Logo
08:30 - 19:05UTH-LHR
17h 35m1 stop
£784
Find Deal
Fri, 19 Sep - Sun, 16 Nov
Logo
20:50 - 09:45LHR-UTH
30h 55m2 stops
Logo
08:40 - 19:05UTH-LHR
17h 25m1 stop
£822
Find Deal
Thu, 25 Sep - Sun, 16 Nov
Logo
21:35 - 20:55LHR-UTH
17h 20m1 stop
Logo
13:55 - 19:20UTH-LHR
35h 25m1 stop
£889
Find Deal
Fri, 5 Sep - Sun, 14 Sep
Thai Airways Logo
21:25 - 20:55LHR-UTH
17h 30m1 stop
Thai Airways Logo
21:25 - 19:15UTH-LHR
27h 50m1 stop
£891Thai Airways
Find Deal
Fri, 5 Sep - Sun, 14 Sep

momondo Fare Finder

 
Customise your flight search to find flights from London 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 21 August 2025.
Use the filters below to find and compare flights from London to Udon Thani that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Fri 19/9

10:00-19:50

2 stops27h 50m

Udon Thani

Sun 16/11

08:40-07:30

2 stops29h 50m

£486

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Sun 21/9

09:30-19:50

2 stops28h 20m

Udon Thani

Sun 16/11

08:40-14:30

2 stops36h 50m

£583

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Fri 5/9

14:45-08:10

2 stops35h 25m

Udon Thani

Sun 14/9

21:25-15:15

2 stops23h 50m

£702

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Fri 5/9

14:45-13:25

2 stops40h 40m

Udon Thani

Sun 14/9

21:25-15:15

2 stops23h 50m

£703

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

£730

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Fri 19/9

22:05-09:45

2 stops29h 40m

Udon Thani

Sun 16/11

08:40-19:05

1 stop17h 25m

£757

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Fri 19/9

21:35-20:55

1 stop17h 20m

Udon Thani

Sun 16/11

08:30-19:05

1 stop17h 35m

£784

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Thu 25/9

20:50-09:45

2 stops30h 55m

Udon Thani

Sun 16/11

08:40-19:05

1 stop17h 25m

£822

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Fri 5/9

21:35-20:55

1 stop17h 20m

Udon Thani

Sun 14/9

13:55-19:20

1 stop35h 25m

£889

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Fri 5/9

21:25-20:55

1 stop17h 30m

Udon Thani

Sun 14/9

21:25-19:15

1 stop27h 50m

£890

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 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 is in May. Flight prices, which tend to average around £702, 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 £743.

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 £781. 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 £927.

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 £830. 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 £834. 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 16h 00m.

  • 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?

  • 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?

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 AirwaysPriceFrom £680Free CancellationRating
7.8
344 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.

An easier way to manage your Udon Thani trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Tue 26/8
Tue 2/9
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Thailand