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

For as low as £705, Gulf Air can have you in Udon Thani from London Heathrow Airport in 33h. 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 £801 on this airline. Users have found that Thai Airways is 18% cheaper than the other options available to this destination.

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?

When flying from London Heathrow Airport to Udon Thani, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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.

£604+ Cheap Flights from London Heathrow Airport to Udon Thani

Cheap flight deals from Heathrow to Udon Thani

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

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 8 October 2026.

Fri 30/1021:00 -

3 stops33h 40m

Sun 22/1114:10 -

3 stops35h 05m

Deal found 5/10£604

Tue 24/1109:30 -

2 stops21h 10m

Thu 21/114:10 -

2 stops31h 35m

Deal found 5/10£684

Mon 12/1021:10 -

2 stops29h 00m

Fri 13/1120:00 -

2 stops23h 15m

Deal found 5/10£720

Mon 23/1121:40 -

2 stops33h 00m

Thu 26/1114:10 -

2 stops31h 35m

Deal found 3/10£748

Fri 20/1116:00 -

2 stops33h 00m

Fri 27/1114:10 -

2 stops23h 15m

Deal found 6/10£754

Tue 24/1122:30 -

2 stops39h 30m

Thu 21/107:35 -

1 stop19h 00m

Deal found 5/10£791

Find flight deals from Heathrow to Udon Thani

Round-trip from	£604
Popular in	March
Cheapest in	May
Average price	£903

30/10-22/11
6 total stops
68h 45m total
London to Udon Thani

Search Deals

Highest demand for flights based on searches. 9% potential increase in price (£75 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease (£32 potential savings vs. average return price).

Search Deals

Average for round-trip flights in October 2026

Search Deals

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

Cheapest return flight

LondonUdon Thani

LHR London Heathrow - UTH Udon Thani

LHRUTH

London Heathrow

Sun 14/3

21:40-13:40

2 stops33h 00m

Udon Thani

Tue 23/3

14:10-14:45

2 stops31h 35m

£705

LondonUdon Thani

LHR London Heathrow - UTH Udon Thani

LHRUTH

London Heathrow

Thu 28/1

09:30-13:40

2 stops21h 10m

Udon Thani

Tue 23/2

14:10-14:45

2 stops31h 35m

£723

LondonUdon Thani

LHR London Heathrow - UTH Udon Thani

LHRUTH

London Heathrow

Mon 23/11

21:40-13:40

2 stops33h 00m

Udon Thani

Thu 26/11

14:10-14:45

2 stops31h 35m

£748

LondonUdon Thani

LHR London Heathrow - UTH Udon Thani

LHRUTH

London Heathrow

Sun 14/3

21:40-13:40

2 stops33h 00m

Udon Thani

Wed 17/3

14:10-06:35

2 stops23h 25m

£751

LondonUdon Thani

LHR London Heathrow - UTH Udon Thani

LHRUTH

London Heathrow

Fri 20/11

16:00-08:00

2 stops33h 00m

Udon Thani

Fri 27/11

14:10-06:25

2 stops23h 15m

£754

Fastest return journey

LondonUdon Thani

LHR London Heathrow - UTH Udon Thani

LHRUTH

London Heathrow

Sun 28/2

09:30-13:40

2 stops21h 10m

Udon Thani

Tue 9/3

14:10-06:35

2 stops23h 25m

£782

LondonUdon Thani

LHR London Heathrow - UTH Udon Thani

LHRUTH

London Heathrow

Thu 28/1

22:00-09:40

2 stops28h 40m

Udon Thani

Tue 23/2

18:30-06:40

1 stop19h 10m

£786

LondonUdon Thani

LHR London Heathrow - UTH Udon Thani

LHRUTH

London Heathrow

Tue 24/11

22:30-21:00

2 stops39h 30m

Udon Thani

Thu 21/1

07:35-19:35

1 stop19h 00m

£791

Flights are sorted by cheapest return flights first.

Deals found on 7/10

Sorted by cheapest first

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.

LHR-UTH

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

7.9

Good

427 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Thayawat,Sept 2026

SIN - BKK

Entertainment system was improved. I could not get my preferred Isle seat this time.

Thai Airways

7.9

Good

427 reviews

Thai Airways

7.9

Good

427 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Thayawat,Sept 2026

SIN - BKK

Entertainment system was improved. I could not get my preferred Isle seat this time.

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 £705, Gulf Air can have you in Udon Thani from London Heathrow Airport in 33h. 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 £801 on this airline. Users have found that Thai Airways is 18% 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

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Top airline flying from Heathrow to Udon Thani

Airline	Cheapest	Average	Flexibility	On-time
Thai Airways	Cheapest£801	Average£933	FlexibilityNo cancel fee	On-time77%	Search Thai Airways flights

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

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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.

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Cheap flights from London Heathrow Airport to Udon Thani from £604

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 30/10. 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

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 8 October 2026.

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 8 October 2026.

Best flights from Heathrow to Udon ThaniDiscover 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 8 October 2026.

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 8 October 2026.

Last-minute flights from Heathrow to Udon ThaniDiscover last-minute flight deals from Heathrow to Udon Thani. Data last updated 8 October 2026 and is based on user searches.

Discover last-minute flight deals from Heathrow to Udon Thani. Data last updated 8 October 2026 and is based on user searches.

Find flight deals from Heathrow to Udon Thani

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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

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

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Alternative routes for Heathrow to Udon Thani

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

Complete your trip

Complete your trip to Udon Thani by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to Thailand

Book a non-stop flight to one of these other cities located in Thailand.

Search flights from Heathrow to Udon Thani by cabin class

Find flights from Heathrow to Udon Thani, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Heathrow and Udon Thani flights

Browse other Heathrow and Udon Thani flight options. Last updated on 8 October 2026.

Other flights from Heathrow

Browse through other flights departing from Heathrow. Flights are based on user searches made on Cheapflights and were last updated on 8 October 2026.

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Other flights to Udon Thani

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Top airline flying from Heathrow to Udon Thani

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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 8 October 2026.

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 8 October 2026.

Last-minute flights from Heathrow to Udon Thani
Discover last-minute flight deals from Heathrow to Udon Thani. Data last updated 8 October 2026 and is based on user searches.