$565 Cheap Flights from London (LHR) to Udon Thani (UTH)

View $565 flight on Mon, Sep 1, 2025Opens in a new window

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

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

Prices were available within the past 7 days and start at $565 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Flights from London (LHR) to Udon Thani (UTH)
Origin airport
Heathrow
Destination airport
Udon Thani Intl.
Distance
5831 mi

London to Udon Thani Flights

The cheapest times to fly from London to Udon Thani

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from London to Udon Thani are during the month of . You can find some of the cheapest flights from London to Udon Thani with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from London to Udon Thani

Sunday is one of the best days to book for cheap flights from London to Udon Thani: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from London to Udon Thani

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from London to Udon Thani in 2025. You can also book with separate airlines for your outbound and return journeys, from $565 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap London to Udon Thani flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your London to Udon Thani airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Heathrow Airport (LHR) to Udon Thani Intl. Airport (UTH) cost?
Secure a cheap one-way flight from $565 or cheap return flight from Heathrow Airport (LHR) to Udon Thani Intl. Airport (UTH) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Heathrow Airport (LHR) to Udon Thani Intl. Airport (UTH)?
Traveling in is a good way to save, as it's the cheapest month for flights between LHR and UTH. You'll typically find the lowest prices during off-peak months.
What is the cheapest airline that flies from Heathrow Airport (LHR) to Udon Thani Intl. Airport (UTH)?
Use the filter tool on Expedia to compare different airlines and find the most affordable carrier that'll fly you from LHR to UTH. Then, sort your results by "Price (lowest to highest)" to pick up the best deal available.
How many flights per day from Heathrow Airport (LHR) to Udon Thani Intl. Airport (UTH)?
You'll have to take a flight with a layover if you're traveling from Heathrow Airport (LHR) to Udon Thani Intl. Airport (UTH). Direct flights don't operate daily on this route. However, simply filter your search to include one or more stops to find an option that works for you.
What day of the week has the most flights from LHR to UTH?
Usually you'll find the most flight options available on a Friday. Tuesdays are often the quietest.* But this can change depending on the airline, time of year and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Heathrow Airport (LHR) to Udon Thani Intl. Airport (UTH)?
To arrive at Udon Thani Intl. Airport (UTH) on schedule, opt for a flight that takes off from Heathrow Airport (LHR) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Heathrow Airport (LHR) to Udon Thani Intl. Airport (UTH) last-minute?
Booking your plane ticket from LHR to UTH right before your journey is generally more expensive. But if there's some wiggle room with your departure dates and times, you could land a cheap last-minute fare.
Is it cheaper to book a LHR to UTH flight and hotel package?
Compared with arranging hotels and flights separately, booking a LHR to UTH flight and hotel package with Expedia could result in significant savings. Better still, having it all in one place will take the stress out of planning your trip. Simply secure your flights and choose from our wide range of stays, then tailor your trip with other add-ons like tours and car rentals.
Can I cancel or change the date of my flight from Heathrow Airport (LHR) to Udon Thani Intl. Airport (UTH)?
If you booked your LHR to UTH flight in the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the type of fare you have, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal if you'd like more information.

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*Available to One Key members.