How long is the flight from London Heathrow Airport to Udon Thani?

For as low as £726, Gulf Air can have you in Udon Thani from London Heathrow Airport in 21h 10m. There are 5827 mi between London Heathrow Airport and Udon Thani.

What is the cheapest airline to fly from London Heathrow Airport to Udon Thani round-trip?

Our cheapest airline available from London Heathrow Airport to Udon Thani is Thai Airways. Our recent data shows that you can find tickets from as low as £679 on this airline. Users have found that Thai Airways is 25% cheaper than the other options available to this destination.

What is the cheapest day to fly from London Heathrow Airport to Udon Thani?

Travellers seeking maximum savings on their London Heathrow Airport to Udon Thani flight should consider departing on Thursday evenings when fares are most often at their lowest. Tuesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in Udon Thani ranges from 0.0 - 250.0 inches per month. August is typically the wettest month, when rainfall can reach 250.0 mm. January is typically the driest time to visit Udon Thani when rainfall is around 0.0 mm.

If weather is an important factor for your trip to Udon Thani, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 30.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 22.0 C).

What is the cheapest time of day to fly from LHR to UTH?

It’s optimal to fly from London Heathrow Airport to Udon Thani at midday. By choosing this option you can save up to 1% on the cost of your flight, compared to a flight in the morning.

What airport do you fly into for flights to Udon Thani from London Heathrow?

Udon Thani (UTH) is the airport you will fly into if you book a flight from London Heathrow to Udon Thani. You should not have trouble finding flights to Udon Thani from London Heathrow; the airport handles an average of 0 inbound flights from London Heathrow per day. You should also have plenty of airline options to choose from since 1 airline has flights to the Udon Thani airport from London Heathrow. It is only a 2.0 mi journey from Udon Thani (UTH) to Udon Thani’s city center.

Can I find deals for flights from Heathrow to Udon Thani that include hotel bookings?

Yes. In addition to deals on Heathrow to Udon Thani flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Heathrow to Udon Thani?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Udon Thani.

Can I find deals for business class flights from Heathrow to Udon Thani?

Yes. Cheapflights offers flight deals from Heathrow to Udon Thani by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£657+ Flights from London Heathrow Airport to Udon Thani

Cheap flight deals from Heathrow to Udon Thani

Round-trip from	£657
Popular in	December
Cheapest in	October
Average price	£703

15/11-29/11
4 total stops
42h 45m total
London to Udon Thani

Search Deals

Highest demand for flights based on searches. 29% potential increase in price (£275 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 13% potential price decrease (£82 potential savings vs. average return price).

Search Deals

Average for round-trip flights in October 2025

Search Deals

Find flight deals from Heathrow to Udon Thani

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Udon Thani
Explore the most affordable flight options available from Heathrow to Udon Thani. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 2 October 2025.

Sat 15/1114:50LHR - UTH

2 stops22h 35mMultiple Airlines

Sat 29/1108:30UTH - LHR

2 stops20h 10mMultiple Airlines

Deal found 1/10£657

Sun 16/1121:20LHR - UTH

1 stop15h 10mMultiple Airlines

Sat 29/1120:00UTH - LHR

2 stops28h 55mMultiple Airlines

Deal found 1/10£787

Sun 16/1121:35LHR - UTH

1 stop27h 25mThai Airways

Sat 29/1108:30UTH - LHR

1 stop18h 05mThai Airways

Deal found 1/10£816

Sat 15/1121:35LHR - UTH

1 stop15h 50mThai Airways

Sat 29/1108:30UTH - LHR

1 stop29h 10mThai Airways

Deal found 1/10£843

Thu 25/1221:35LHR - UTH

1 stop27h 25mThai Airways

Sat 17/114:10UTH - LHR

1 stop36h 25mThai Airways

Deal found 29/9£950

Thu 25/1221:35LHR - UTH

1 stop27h 25mMultiple Airlines

Sat 17/120:50UTH - LHR

2 stops20h 05mMultiple Airlines

Deal found 29/9£1,035

Best flights from Heathrow to Udon Thani
Discover carefully curated flight deals from Heathrow to Udon Thani that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 2 October 2025.

Sun 16/1113:55LHR - UTH

2 stops23h 30mMultiple Airlines

Sat 29/1108:30UTH - LHR

2 stops20h 10mMultiple Airlines

Deal found 1/10£657

Sun 15/309:30LHR - UTH

2 stops21h 10mGulf Air

Thu 19/314:10UTH - LHR

2 stops31h 35mGulf Air

Deal found 30/9£726

Sat 15/1121:35LHR - UTH

1 stop15h 50mThai Airways

Sat 29/1108:30UTH - LHR

1 stop29h 10mThai Airways

Deal found 1/10£843

Sat 15/1114:50LHR - UTH

2 stops22h 35mMultiple Airlines

Sat 29/1108:30UTH - LHR

2 stops20h 10mMultiple Airlines

Deal found 1/10£657

Thu 25/1221:35LHR - UTH

1 stop27h 25mThai Airways

Sat 17/114:10UTH - LHR

1 stop36h 25mThai Airways

Deal found 29/9£950

Thu 25/1221:35LHR - UTH

1 stop27h 25mMultiple Airlines

Sat 17/120:50UTH - LHR

2 stops20h 05mMultiple Airlines

Deal found 29/9£1,035

Last-minute flights from Heathrow to Udon Thani
Discover last-minute flight deals from Heathrow to Udon Thani. Data last updated 2 October 2025 and is based on user searches.

Sat 15/1114:50LHR - UTH

2 stops22h 35mMultiple Airlines

Sat 29/1108:30UTH - LHR

2 stops20h 10mMultiple Airlines

Deal found 1/10£657

Sat 15/1121:35LHR - UTH

1 stop15h 50mThai Airways

Sat 29/1108:30UTH - LHR

1 stop29h 10mThai Airways

Deal found 1/10£843

Sun 16/1121:20LHR - UTH

1 stop15h 10mMultiple Airlines

Sat 29/1120:00UTH - LHR

2 stops28h 55mMultiple Airlines

Deal found 1/10£787

Sun 16/1121:35LHR - UTH

1 stop27h 25mThai Airways

Sat 29/1108:30UTH - LHR

1 stop18h 05mThai Airways

Deal found 1/10£816

Cheapflights Fare Finder

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

Sun 16/11

13:55-20:25

2 stops23h 30m

Udon Thani

Sat 29/11

08:30-21:40

2 stops20h 10m

£657

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Sat 15/11

14:50-20:25

2 stops22h 35m

Udon Thani

Sat 29/11

08:30-21:40

2 stops20h 10m

£657

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Sun 15/3

09:30-13:40

2 stops21h 10m

Udon Thani

Thu 19/3

14:10-14:45

2 stops31h 35m

£726

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Sat 15/11

21:35-20:25

1 stop15h 50m

Udon Thani

Sat 29/11

08:30-06:40

1 stop29h 10m

£843

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Thu 25/12

21:35-08:00

1 stop27h 25m

Udon Thani

Sat 17/1

14:10-19:35

1 stop36h 25m

£950

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Thu 25/12

21:35-08:00

1 stop27h 25m

Udon Thani

Sat 17/1

20:50-09:55

2 stops20h 05m

£1,035

Flights are sorted by cheapest return flights first.

Deals found on 1/10

Best time to book a flight from Heathrow to Udon Thani

Have a flexible travel schedule? Discover the best time to fly to Udon Thani from Heathrow with our price prediction graph.

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Reviews of airlines servicing Udon Thani

Read reviews from past customers who have flown with Thai Airways from London Heathrow Airport to Udon Thani. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Thai Airways

7.8

Good

354 reviews

Check prices

Reviews

1 / 18

10.0

Excellent

Joe,Jun 2025

BKK - TPE

The flight was very comfortable, and I really appreciated that each seat had an electric outlet to charge devices. The staff was great.

Thai Airways

7.8

Good

354 reviews

Thai Airways

7.8

Good

354 reviews

Check prices

Reviews

1 / 18

10.0

Excellent

Joe,Jun 2025

BKK - TPE

The flight was very comfortable, and I really appreciated that each seat had an electric outlet to charge devices. The staff was great.

Related info for your journey

What airport do you fly into for flights to Udon Thani from London Heathrow?
Udon Thani (UTH) is the airport you will fly into if you book a flight from London Heathrow to Udon Thani. You should not have trouble finding flights to Udon Thani from London Heathrow; the airport handles an average of 0 inbound flights from London Heathrow per day. You should also have plenty of airline options to choose from since 1 airline has flights to the Udon Thani airport from London Heathrow. It is only a 2.0 mi journey from Udon Thani (UTH) to Udon Thani’s city center.
How long is the flight from London Heathrow Airport to Udon Thani?
For as low as £726, Gulf Air can have you in Udon Thani from London Heathrow Airport in 21h 10m. There are 5827 mi between London Heathrow Airport and Udon Thani.
What is the cheapest airline to fly from London Heathrow Airport to Udon Thani round-trip?
Our cheapest airline available from London Heathrow Airport to Udon Thani is Thai Airways. Our recent data shows that you can find tickets from as low as £679 on this airline. Users have found that Thai Airways is 25% cheaper than the other options available to this destination.
Can I find deals for flights from Heathrow to Udon Thani that include hotel bookings?
Yes. In addition to deals on Heathrow to Udon Thani flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Heathrow to Udon Thani?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Udon Thani.
Can I find deals for business class flights from Heathrow to Udon Thani?
Yes. Cheapflights offers flight deals from Heathrow to Udon Thani by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Heathrow to Udon Thani

Airline	Cheapest	Average	Flexibility	On-time
Thai Airways	Cheapest£679	Average£768	FlexibilityNo cancel fee	On-time77%	Search Thai Airways flights

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How does Cheapflights help users find flights from Heathrow to Udon Thani?

Cheapflights helps you search for flights from Heathrow to Udon Thani via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Udon Thani?

Cheapflights simply makes it quick and affordable to book flights from Heathrow to Udon Thani by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Heathrow to Udon Thani with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Heathrow to Udon Thani, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Heathrow to Udon Thani become cheaper?

Not ready to book yet? You can track prices for flights from Heathrow to Udon Thani on Cheapflights with our Price Alert feature and get notified when better prices are available.

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Cheap flights from London Heathrow Airport to Udon Thani from £657

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 15/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Heathrow to Udon Thani

Round-trip from

Popular in

Cheapest in

Average price

Find flight deals from Heathrow to Udon Thani

Cheapest flights from Heathrow to Udon ThaniExplore the most affordable flight options available from Heathrow to Udon Thani. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 2 October 2025.

Explore the most affordable flight options available from Heathrow to Udon Thani. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 2 October 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from London Heathrow Airport to Udon Thani that are best for you.

Best time to book a flight from Heathrow to Udon Thani

Have a flexible travel schedule? Discover the best time to fly to Udon Thani from Heathrow with our price prediction graph.

Reviews of airlines servicing Udon Thani

Read reviews from past customers who have flown with Thai Airways from London Heathrow Airport to Udon Thani. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Udon Thani. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to Udon Thani from London Heathrow?

How long is the flight from London Heathrow Airport to Udon Thani?

What is the cheapest airline to fly from London Heathrow Airport to Udon Thani round-trip?

Can I find deals for flights from Heathrow to Udon Thani that include hotel bookings?

How can I find direct flights from Heathrow to Udon Thani?

Can I find deals for business class flights from Heathrow to Udon Thani?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Heathrow to Udon Thani

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Heathrow to Udon Thani

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Heathrow to Udon Thani?

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Udon Thani?

Can Cheapflights find flights from Heathrow to Udon Thani with no change fees?

Can Cheapflights notify me if prices for flights from Heathrow to Udon Thani become cheaper?

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Cheapest flights from Heathrow to Udon Thani
Explore the most affordable flight options available from Heathrow to Udon Thani. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 2 October 2025.