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Cheap flights from London Heathrow Airport to Vientiane from £342

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 12/2. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — VTE
20 Dec — 27 Dec1
1 adult
1 adult, Economy, 0 bags

Find flight deals from Heathrow to Vientiane

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Vientiane
Explore the most affordable flight options available from Heathrow to Vientiane. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 November 2025.

Sun 30/1122:00LHR - VTE
1 stop34h 05mChina Southern
Thu 4/1216:25VTE - LHR
1 stop33h 10mChina Southern
Deal found 18/11£610
Sun 30/1121:00LHR - VTE
1 stop20h 05mChina Eastern
Wed 3/1201:05VTE - LHR
1 stop23h 25mChina Eastern
Deal found 19/11£667
Sat 22/1121:00LHR - VTE
1 stop20h 05mChina Eastern
Sat 29/1110:05VTE - LHR
2 stops38h 25mChina Eastern
Deal found 19/11£680
Sun 30/1111:00LHR - VTE
1 stop16h 45mVietnam Airlines
Thu 4/1219:45VTE - LHR
1 stop18h 30mVietnam Airlines
Deal found 19/11£806
Sat 22/1122:00LHR - VTE
1 stop34h 05mChina Southern
Sat 29/1116:25VTE - LHR
2 stops28h 35mChina Southern
Deal found 20/11£830

Cheap flight deals from Heathrow to Vientiane

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Vientiane (VTE). 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 20 November 2025.

Round-trip from

£574

One-way from

£342

Popular in

August

Cheapest in

September

Average price

£923
China Southern
  • China Southern
  • 15/2-1/3
  • 3 total stops
  • 67h 15m total
  • London to Vientiane
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12/2
  • 12/2
  • 2 total stops
  • 30h 45m total
  • London to Vientiane
Search Deals
High demand for flights, 0% potential price rise
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Cheapest flight prices on average. 1% potential price decrease (£12 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
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Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow to Vientiane 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 20 November 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Vientiane that are best for you.

Fly from

Heathrow

Fly to

Vientiane

Route

Depart

Return

Price

LondonVientiane

LHR - VTE

LHRVTE

London Heathrow

Fri 16/1

21:30-15:05

2 stops34h 35m

Vientiane Wattay

Mon 26/1

16:25-18:35

1 stop33h 10m

£513

LondonVientiane

LHR - VTE

LHRVTE

London Heathrow

Sun 30/11

22:00-15:05

1 stop34h 05m

Vientiane Wattay

Thu 4/12

16:25-17:55

2 stops32h 30m

£644

LondonVientiane

LHR - VTE

LHRVTE

London Heathrow

Wed 11/2

22:00-15:05

1 stop34h 05m

Vientiane Wattay

Fri 27/2

16:25-18:35

1 stop33h 10m

£666

LondonVientiane

LHR - VTE

LHRVTE

London Heathrow

Sun 30/11

21:00-00:05

1 stop20h 05m

Vientiane Wattay

Wed 3/12

01:05-17:30

1 stop23h 25m

£667

LondonVientiane

LHR - VTE

LHRVTE

London Heathrow

Sun 3/5

06:50-19:45

3 stops30h 55m

Vientiane Wattay

Sat 16/5

01:00-18:40

1 stop23h 40m

£729

LondonVientiane

LHR - VTE

LHRVTE

London Heathrow

Sun 30/11

11:00-10:45

1 stop16h 45m

Vientiane Wattay

Thu 4/12

19:45-07:15

1 stop18h 30m

£806

LondonVientiane

LHR - VTE

LHRVTE

London Heathrow

Fri 13/2

14:50-19:45

2 stops21h 55m

Vientiane Wattay

Thu 26/2

20:30-08:20

2 stops18h 50m

£809

LondonVientiane

LHR - VTE

LHRVTE

London Heathrow

Thu 12/2

22:15-12:00

2 stops30h 45m

£342

LondonVientiane

LHR - VTE

LHRVTE

London Heathrow

Sat 17/1

21:10-18:55

3 stops38h 45m

£343

LondonVientiane

LHR - VTE

LHRVTE

London Heathrow

Sun 11/1

21:00-07:35

2 stops27h 35m

£380

Flights are sorted by cheapest return flights first.

Deals found on 19/11

Showing 1-10 of 17 results
1
2

Best time to book a flight from Heathrow to Vientiane

Have a flexible travel schedule? Discover the best time to fly to Vientiane 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 Vientiane

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

Currently, January is the cheapest month in which you can book a flight from London Heathrow Airport to Vientiane (average of £242). Flying from London Heathrow Airport to Vientiane in December is currently the most expensive (average of £935). 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 Vientiane

Get insights into the airlines that provide service to Vientiane. 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 Vientiane. Reviews last updated 20 November 2025.
Check out reviews from past customers who have flown with Thai Airways, China Southern, andChina Eastern from London Heathrow Airport to Vientiane to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Thai Airways
7.8
Good
362 reviews
Check prices

Overall

7.8

Food

7.3

Comfort

7.6

Boarding

7.8

Entertainment

6.9

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
362 reviews
Thai Airways
7.8
Good
362 reviews
Check prices

Overall

7.8

Food

7.3

Comfort

7.6

Boarding

7.8

Entertainment

6.9

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.
China Southern
7.5
Good
119 reviews
Thai Airways
7.8
Good
362 reviews
Check prices

Overall

7.8

Food

7.3

Comfort

7.6

Boarding

7.8

Entertainment

6.9

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.
China Eastern
7.2
Good
178 reviews
Thai Airways
7.8
Good
362 reviews
Check prices

Overall

7.8

Food

7.3

Comfort

7.6

Boarding

7.8

Entertainment

6.9

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 Vientiane. 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 Vientiane from London Heathrow?

    Vientiane Wattay (VTE), located 2.8 mi from the city center, is the airport you fly into when you book flights from London Heathrow to Vientiane. 3 airlines have flights to Wattay from London Heathrow on a regular basis. Booking flights from London Heathrow to Vientiane Wattay should not be difficult; the airport handles an average of 0 inbound flights from London Heathrow per day.

  • How long is the flight from London Heathrow Airport to Vientiane?

    There are many flights that can get you from London Heathrow Airport to Vientiane in 20h 05m. Fly via China Southern or China Eastern to get the fastest option. The distance between London Heathrow Airport and Vientiane is about 5786 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from London Heathrow Airport to Vientiane round-trip?

    Currently priced at £242, China Eastern will fly you from London Heathrow Airport to Vientiane and back. In addition to China Eastern, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from China Southern and Thai Airways - these airlines can fly you to your destination from £444 and £799, respectively. You may be able to fly from London Heathrow Airport to Vientiane for 71% less than the average price by searching for these airlines.

  • Can I find deals for flights from Heathrow to Vientiane that include hotel bookings?

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

  • How can I find direct flights from Heathrow to Vientiane?

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

  • Can I find deals for business class flights from Heathrow to Vientiane?

    Yes. Cheapflights offers flight deals from Heathrow to Vientiane 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 Vientiane?

    Currently, January is the cheapest month in which you can book a flight from London Heathrow Airport to Vientiane (average of £242). Flying from London Heathrow Airport to Vientiane in December is currently the most expensive (average of £935). 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

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Alternative routes for Heathrow to Vientiane

See prices for flight routes from nearby airports that may be better suited for you.
Gatwick to Vientiane flights
Stansted to Vientiane flights
Gatwick to Luang Prabang flights
Heathrow to Luang Prabang flights
Stansted to Luang Prabang flights
London City to Vientiane flights

Top 3 airlines flying from Heathrow to Vientiane

Discover the top 3 airlines that operate flights from Heathrow to Vientiane. 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 20 November 2025.
AirlineCheapestAverageFlexibilityOn-time
China EasternCheapest£242Average£668FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
China SouthernCheapest£444Average£543FlexibilityNo cancel feeOn-time69%
Search China Southern flights
Thai AirwaysCheapest£799Average£856FlexibilityNo cancel feeOn-time77%
Search Thai Airways flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Heathrow to Vientiane?

When you search for this flight from Heathrow to Vientiane, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

Cheapflights simply makes it quick and affordable to book flights from Heathrow to Vientiane 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 Vientiane with no change fees?

Yes! Cheapflights helps users easily find flights from Heathrow to Vientiane with no change fees.

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

Yes! Start tracking prices for Heathrow to Vientiane flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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