Find flights
When to book
Airlines
FAQs

Cheap flights from London Heathrow Airport to Udon Thani from £362

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 15/2. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — UTH
14 Dec — 21 Dec1
1 adult
1 adult, Economy, 0 bags

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 14 November 2025.

Thu 25/1211:50LHR - UTH
1 stop18h 50mThai Airways
Sat 17/120:50UTH - LHR
1 stop29h 45mThai Airways
Deal found 10/11£1,116
Sun 28/1220:05LHR - UTH
2 stops17h 20mMultiple Airlines
Sun 4/108:30UTH - LHR
1 stop17h 35mMultiple Airlines
Deal found 13/11£1,248
Thu 25/1211:50LHR - UTH
1 stop18h 50mMultiple Airlines
Sat 17/120:50UTH - LHR
2 stops20h 05mMultiple Airlines
Deal found 10/11£1,259
Fri 26/1221:00LHR - UTH
3 stops34h 25mMultiple Airlines
Fri 2/108:40UTH - LHR
1 stop17h 55mMultiple Airlines
Deal found 11/11£1,582
Fri 26/1221:35LHR - UTH
1 stop15h 50mThai Airways
Fri 2/108:30UTH - LHR
1 stop18h 05mThai Airways
Deal found 11/11£1,621
Sun 28/1211:50LHR - UTH
1 stop25h 35mThai Airways
Sun 4/120:50UTH - LHR
1 stop29h 45mThai Airways
Deal found 13/11£1,635
Sat 27/1211:50LHR - UTH
1 stop25h 35mThai Airways
Sun 4/120:50UTH - LHR
1 stop29h 45mThai Airways
Deal found 11/11£1,663

Cheap flight deals from Heathrow to Udon Thani

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Udon Thani (UTH). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 14 November 2025.

Round-trip from

£847

One-way from

£362

Popular in

December

Cheapest in

October

Average price

£786
Gulf Air
  • Gulf Air
  • 15/3-19/3
  • 4 total stops
  • 64h 25m total
  • London to Udon Thani
Search Deals
15/2
  • 15/2
  • 2 total stops
  • 39h 20m total
  • London to Udon Thani
Search Deals
Highest demand for flights based on searches. 26% potential increase in price (£254 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 13% potential price decrease (£81 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow 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, Cheapflights users made 858,174 searches. Data last updated 14 November 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Udon Thani that are best for you.

Fly from

Heathrow

Fly to

Udon Thani

Route

Depart

Return

Price

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Sat 11/4

06:40-19:50

2 stops31h 10m

Udon Thani

Fri 24/4

09:00-14:45

3 stops35h 45m

£598

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Sun 15/3

21:50-13:40

2 stops32h 50m

Udon Thani

Thu 19/3

14:10-14:45

2 stops31h 35m

£847

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Sat 11/4

12:30-13:25

1 stop18h 55m

Udon Thani

Fri 24/4

08:40-19:10

1 stop16h 30m

£903

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Thu 25/12

11:50-13:40

1 stop18h 50m

Udon Thani

Sat 17/1

20:50-19:35

1 stop29h 45m

£1,116

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Sun 15/3

11:50-13:40

1 stop18h 50m

Udon Thani

Thu 19/3

14:10-19:35

1 stop36h 25m

£1,194

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Sun 15/2

21:10-19:30

2 stops39h 20m

£362

LondonUdon Thani

LHR - UTH

LHRUTH

London Heathrow

Sun 15/2

11:50-20:20

1 stop25h 30m

£536

Flights are sorted by cheapest return flights first.

Deals found on 13/11

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.

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Udon Thani

What is the cheapest month to book a flight from London Heathrow Airport to Udon Thani?

Currently, May is the cheapest month in which you can book a flight from London Heathrow Airport to Udon Thani (average of £394). Flying from London Heathrow Airport to Udon Thani in January is currently the most expensive (average of £864). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Udon Thani

Get insights into the airlines that provide service to Udon Thani. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Udon Thani. Reviews last updated 14 November 2025.
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
361 reviews
Check prices

Comfort

7.6

Entertainment

6.9

Boarding

7.8

Overall

7.8

Food

7.3

Crew

8.3

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
361 reviews
Thai Airways
7.8
Good
361 reviews
Check prices

Comfort

7.6

Entertainment

6.9

Boarding

7.8

Overall

7.8

Food

7.3

Crew

8.3

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

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?

    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 £847, Gulf Air can have you in Udon Thani from London Heathrow Airport in 32h 50m. 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 £695 on this airline. Users have found that Thai Airways is 23% 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.

  • What is the cheapest month to book a flight from London Heathrow Airport to Udon Thani?

    Currently, May is the cheapest month in which you can book a flight from London Heathrow Airport to Udon Thani (average of £394). Flying from London Heathrow Airport to Udon Thani in January is currently the most expensive (average of £864). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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.
Heathrow to Suvarnabhumi flights
Gatwick to Suvarnabhumi flights
London City to Suvarnabhumi flights
Stansted to Suvarnabhumi flights
Luton to Suvarnabhumi flights
Heathrow to Don Mueang Intl flights
Heathrow to Phuket City flights
Gatwick to Phuket City flights
Stansted to Phuket City flights
London City to Phuket City flights
Gatwick to Don Mueang Intl flights
Luton to Phuket City flights
Heathrow to Ko Samui flights
Southend to Suvarnabhumi flights
Heathrow to Chiang Mai flights
Gatwick to Ko Samui flights
London City to Ko Samui flights
Heathrow to Krabi flights
Gatwick to Chiang Mai flights
Stansted to Ko Samui flights
Stansted to Chiang Mai flights
Gatwick to Krabi flights
London City to Chiang Mai flights
Stansted to Krabi flights
London City to Krabi flights
Luton to Ko Samui flights
Luton to Krabi flights
Luton to Chiang Mai flights
Heathrow to Rayong flights
Gatwick to Rayong flights
Heathrow to Trat flights
Gatwick to Khon Kaen flights
Heathrow to Chiang Rai flights
Gatwick to Trat flights
Stansted to Trat flights
Heathrow to Hat Yai flights
Gatwick to Chiang Rai flights
Heathrow to Surat Thani flights
Southend to Krabi flights
Gatwick to Surat Thani flights

Top airline flying from Heathrow to Udon Thani

Discover the top airline that operate flights from Heathrow to Udon Thani. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 14 November 2025.
AirlineCheapestAverageFlexibilityOn-time
Thai AirwaysCheapest£695Average£787FlexibilityNo cancel feeOn-time77%
Search Thai Airways flights

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?

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.