£429 Cheap Flights from London (LHR) to Udon Thani (UTH)

View £429 flight on Wed, 16 Sept 2026Opens in a new window

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Popular airlines from Heathrow Airport (LHR) to Udon Thani (UTH-Udon Thani Intl.)

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Cheap Flights from London (LHR) to Udon Thani (UTH)

Prices were available within the past 7 days and start at £429 for one-way flights and £685 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Qatar Airways
Tue, 9 Jun - Mon, 15 Jun
LHR
London
UTH
Udon Thani
£685 Return, found 2 days ago
£685
Return
found 2 days ago
Select Qatar Airways flight, departing Tue, 9 Jun from London to Udon Thani, returning Mon, 15 Jun, priced at £685 found 2 days ago
Qatar Airways
Wed, 16 Sept - Mon, 28 Sept
LHR
London
UTH
Udon Thani
£694 Return, just found
£694
Return
just found
Select Qatar Airways flight, departing Wed, 16 Sept from London to Udon Thani, returning Mon, 28 Sept, priced at £694 just found
Qatar Airways
Fri, 5 Jun - Mon, 15 Jun
LHR
London
UTH
Udon Thani
£696 Return, found 2 days ago
£696
Return
found 2 days ago
Select Qatar Airways flight, departing Fri, 5 Jun from London to Udon Thani, returning Mon, 15 Jun, priced at £696 found 2 days ago
Qatar Airways
Tue, 9 Jun - Sat, 20 Jun
LHR
London
UTH
Udon Thani
£705 Return, found 2 days ago
£705
Return
found 2 days ago
Select Qatar Airways flight, departing Tue, 9 Jun from London to Udon Thani, returning Sat, 20 Jun, priced at £705 found 2 days ago
Qatar Airways
Sun, 10 May - Sun, 17 May
LHR
London
UTH
Udon Thani
£708 Return, found 3 days ago
£708
Return
found 3 days ago
Select Qatar Airways flight, departing Sun, 10 May from London to Udon Thani, returning Sun, 17 May, priced at £708 found 3 days ago
Qatar Airways
Fri, 5 Jun - Sun, 14 Jun
LHR
London
UTH
Udon Thani
£708 Return, found 2 days ago
£708
Return
found 2 days ago
Select Qatar Airways flight, departing Fri, 5 Jun from London to Udon Thani, returning Sun, 14 Jun, priced at £708 found 2 days ago
Gulf Air
Sun, 7 Jun - Wed, 17 Jun
LHR
London
UTH
Udon Thani
£717 Return, found 2 days ago
£717
Return
found 2 days ago
Select Gulf Air flight, departing Sun, 7 Jun from London to Udon Thani, returning Wed, 17 Jun, priced at £717 found 2 days ago
Etihad Airways
Mon, 8 Jun - Wed, 17 Jun
LHR
London
UTH
Udon Thani
£745 Return, found 2 days ago
£745
Return
found 2 days ago
Select Etihad Airways flight, departing Mon, 8 Jun from London to Udon Thani, returning Wed, 17 Jun, priced at £745 found 2 days ago
Turkish Airlines
Mon, 8 Jun - Wed, 17 Jun
LHR
London
UTH
Udon Thani
£967 Return, found 2 days ago
£967
Return
found 2 days ago
Select Turkish Airlines flight, departing Mon, 8 Jun from London to Udon Thani, returning Wed, 17 Jun, priced at £967 found 2 days ago
Thai Airways International
Mon, 8 Jun - Wed, 17 Jun
LHR
London
UTH
Udon Thani
£1,136 Return, found 2 days ago
£1,136
Return
found 2 days ago
Select Thai Airways International flight, departing Mon, 8 Jun from London to Udon Thani, returning Wed, 17 Jun, priced at £1,136 found 2 days ago

Frequently asked questions

How much does a flight from London (LHR-Heathrow) to Udon Thani (UTH-Udon Thani Intl.) cost?
One-way flights typically cost between £899 and £3,648 and return flights often range between £899 and £3,648. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Anaa (AAA) to Toronto, ON (YYZ-Pearson Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
How do I find cheap flights from London (LHR-Heathrow) to Udon Thani (UTH-Udon Thani Intl.)?
To find a cheap flight from London (LHR-Heathrow) to Udon Thani (UTH-Udon Thani Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from London (LHR-Heathrow) to Udon Thani (UTH-Udon Thani Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from London (LHR-Heathrow) to Udon Thani (UTH-Udon Thani Intl.)?
There are approximately 34 connecting flights per day from London (LHR-Heathrow) to Udon Thani (UTH-Udon Thani Intl.). Some common connection points include Istanbul Airport (IST), Hamad Intl. (DOH), and Abu Dhabi Intl. (AUH).
What is the earliest flight from London (LHR-Heathrow) to Udon Thani (UTH-Udon Thani Intl.)?
The earliest flight from London Heathrow (LHR) to Udon Thani (UTH) typically departs at approximately 6:00 AM local time. This service is operated by BT, LX, and TG and is seasonal, active only in April. An early departure like this can help you maximise your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from London (LHR-Heathrow) to Udon Thani (UTH-Udon Thani Intl.)?
You'll typically find the most flights from London Heathrow (LHR) to Udon Thani (UTH) on a Saturday, with around 44 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include Lufthansa, British Airways, and SWISS.
What are the most popular departure times for flights from London (LHR-Heathrow) to Udon Thani (UTH-Udon Thani Intl.)?
The most popular departure times for flights from London Heathrow (LHR) to Udon Thani (UTH) are between 12pm and 3pm. About 27% of passengers prefer this time. Many major carriers, including Thai Airways, Etihad Airways and Air Baltic, offer flights during this window. This timing works well because it allows for a midday departure, giving you time in the morning before your flight and an evening arrival at your destination.
How long does it take to fly from London (LHR-Heathrow) to Udon Thani (UTH-Udon Thani Intl.)?
Flying from LHR to UTH with a connection usually takes about 17 hours 20 minutes, traveling roughly 5,832 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from London (LHR-Heathrow) to Udon Thani (UTH-Udon Thani Intl.)?
Select the "Business class" and "First class" filters when looking for LHR to UTH flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a London (LHR-Heathrow) to Udon Thani (UTH-Udon Thani Intl.) flight with Expedia?
It's easy to earn miles on a London (LHR-Heathrow) to Udon Thani (UTH-Udon Thani Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Udon Thani from Heathrow (LHR)?
From Heathrow (LHR), you can fly into Udon Thani Intl. (UTH) to reach Udon Thani. Some flights may connect through major hubs like Hamad Intl. (DOH), Abu Dhabi Intl. (AUH), Franz Josef Strauss Intl. (MUC) before reaching Udon Thani. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from London (LHR-Heathrow) to Udon Thani (UTH-Udon Thani Intl.) at the last minute?
Typically, booking a last minute flight from London (LHR-Heathrow) to Udon Thani (UTH-Udon Thani Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a London (LHR-Heathrow) to Udon Thani (UTH-Udon Thani Intl.) flight and hotel package?
Securing a London (LHR-Heathrow) to Udon Thani (UTH-Udon Thani Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from London (LHR-Heathrow) to Udon Thani (UTH-Udon Thani Intl.)?
If you booked your London (LHR-Heathrow) to Udon Thani (UTH-Udon Thani Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Heathrow
Destination airport
Udon Thani Intl.
Airlines serving
Thai Airways International, Turkish Airlines
Return price
£685
Distance
9329 km

Book with confidence

Compare flights from London to Udon Thani easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from London to Udon Thani. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Udon Thani Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Heathrow to Udon Thani Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Heathrow (LHR) to Udon Thani Intl. (UTH)

The easiest way to view the best deals on flights from London to Udon Thani today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Heathrow to Udon Thani Intl. start at just £685 and range up to £1,136.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near London and Udon Thani
  • booking your flight during June, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your London to Udon Thani flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Heathrow to Udon Thani Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from London to Udon Thani easily and book with confidence

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