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Cheap flights from London Heathrow Airport to Vientiane from £346

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 16/3. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — VTE
18 Mar — 25 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap 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 16 February 2026.

Tue 12/522:10
LHR
-
VTE
1 stop30h 20m
China Southern
Tue 26/511:30
VTE
-
LHR
1 stop37h 30m
China Southern
Deal found 14/2£531
Sun 24/522:10
LHR
-
VTE
1 stop30h 20m
China Southern
Sat 20/615:50
VTE
-
LHR
1 stop33h 10m
China Southern
Deal found 15/2£535
Fri 30/1021:00
LHR
-
VTE
1 stop20h 05m
China Eastern
Thu 12/1101:05
VTE
-
LHR
1 stop23h 25m
China Eastern
Deal found 14/2£551
Tue 10/322:00
LHR
-
VTE
1 stop29h 30m
China Southern
Tue 24/316:25
VTE
-
LHR
1 stop33h 10m
China Southern
Deal found 13/2£554
Thu 29/1021:00
LHR
-
VTE
1 stop20h 05m
China Eastern
Thu 12/1115:50
VTE
-
LHR
2 stops32h 40m
China Eastern
Deal found 16/2£556
Mon 11/521:20
LHR
-
VTE
2 stops35h 30m
China Eastern
Sun 24/518:50
VTE
-
LHR
2 stops29h 50m
China Eastern
Deal found 14/2£559
Tue 10/321:05
LHR
-
VTE
2 stops27h 30m
Multiple Airlines
Tue 24/316:25
VTE
-
LHR
1 stop33h 10m
Multiple Airlines
Deal found 13/2£560
Tue 12/521:20
LHR
-
VTE
2 stops30h 15m
China Eastern
Tue 26/515:50
VTE
-
LHR
2 stops32h 50m
China Eastern
Deal found 14/2£562

Find 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 16 February 2026.

Round-trip from

£531

One-way from

£346

Popular in

August

Cheapest in

September

Average price

£864
China Southern
  • China Southern
  • 12/5-26/5
  • 2 total stops
  • 67h 50m total
  • London to Vientiane
Search Deals
China Southern
  • China Southern
  • 16/3
  • 1 total stop
  • 31h 55m total
  • London to Vientiane
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (£45 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£27 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

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 16 February 2026.
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

Tue 12/5

22:10-10:30

1 stop30h 20m

Vientiane Wattay

Tue 26/5

11:30-19:00

1 stop37h 30m

£531

LondonVientiane

LHR - VTE

LHRVTE

London Heathrow

Mon 1/6

22:10-10:30

1 stop30h 20m

Vientiane Wattay

Mon 15/6

11:30-19:00

1 stop37h 30m

£559

LondonVientiane

LHR - VTE

LHRVTE

London Heathrow

Mon 11/5

21:20-14:50

2 stops35h 30m

Vientiane Wattay

Sun 24/5

18:50-18:40

2 stops29h 50m

£559

LondonVientiane

LHR - VTE

LHRVTE

London Heathrow

Tue 10/3

21:05-07:35

2 stops27h 30m

Vientiane Wattay

Tue 24/3

16:25-18:35

1 stop33h 10m

£560

LondonVientiane

LHR - VTE

LHRVTE

London Heathrow

Mon 11/5

22:10-10:30

1 stop30h 20m

Vientiane Wattay

Sun 24/5

18:50-18:40

2 stops29h 50m

£575

LondonVientiane

LHR - VTE

LHRVTE

London Heathrow

Tue 10/3

22:00-10:30

1 stop29h 30m

Vientiane Wattay

Tue 24/3

11:30-14:00

2 stops33h 30m

£576

LondonVientiane

LHR - VTE

LHRVTE

London Heathrow

Mon 2/3

21:10-13:05

2 stops32h 55m

Vientiane Wattay

Fri 13/3

13:55-19:10

2 stops36h 15m

£578

LondonVientiane

LHR - VTE

LHRVTE

London Heathrow

Wed 13/5

21:20-17:50

3 stops38h 30m

Vientiane Wattay

Sun 17/5

10:35-18:40

3 stops38h 05m

£586

LondonVientiane

LHR - VTE

LHRVTE

London Heathrow

Mon 16/3

19:35-10:30

1 stop31h 55m

£346

LondonVientiane

LHR - VTE

LHRVTE

London Heathrow

Wed 15/4

22:10-14:45

1 stop34h 35m

£347

Flights are sorted by cheapest return flights first.

Deals found on 15/2

Showing 1-10 of 16 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, September is the cheapest month in which you can book a flight from London Heathrow Airport to Vientiane (average of £399). Flying from London Heathrow Airport to Vientiane in August is currently the most expensive (average of £1,190). 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.

How much does it cost for a return flight from London Heathrow Airport to Vientiane?

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 16 February 2026.
Check out reviews from past customers who have flown with Thai Airways and China 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
382 reviews
Check prices

Comfort

7.6

Crew

8.4

Food

7.4

Overall

7.8

Boarding

7.9

Entertainment

6.8

Reviews

1 / 20
10.0
Excellent

Virendra,Jan 2026

DEL - BKK

Having required wheel chair assistance, I received amazing service from the ground and cabin staff. Everything was a breeze. Flight was comfortable but the entertainment system was quite dated. The chicken noodles served was amazing
Thai Airways
7.8
Good
382 reviews
Thai Airways
7.8
Good
382 reviews
Check prices

Comfort

7.6

Crew

8.4

Food

7.4

Overall

7.8

Boarding

7.9

Entertainment

6.8

Reviews

1 / 20
10.0
Excellent

Virendra,Jan 2026

DEL - BKK

Having required wheel chair assistance, I received amazing service from the ground and cabin staff. Everything was a breeze. Flight was comfortable but the entertainment system was quite dated. The chicken noodles served was amazing
China Eastern
7.2
Good
192 reviews
Thai Airways
7.8
Good
382 reviews
Check prices

Comfort

7.6

Crew

8.4

Food

7.4

Overall

7.8

Boarding

7.9

Entertainment

6.8

Reviews

1 / 20
10.0
Excellent

Virendra,Jan 2026

DEL - BKK

Having required wheel chair assistance, I received amazing service from the ground and cabin staff. Everything was a breeze. Flight was comfortable but the entertainment system was quite dated. The chicken noodles served was amazing

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. 2 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 30h 20m. 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 £563, 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. Check Cheapflights for deals on Thai Airways for as low as £773. You may be able to fly from London Heathrow Airport to Vientiane for 36% 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, September is the cheapest month in which you can book a flight from London Heathrow Airport to Vientiane (average of £399). Flying from London Heathrow Airport to Vientiane in August is currently the most expensive (average of £1,190). 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

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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
Stansted to Luang Prabang flights
London City to Vientiane flights
Gatwick to Luang Prabang flights
Heathrow to Luang Prabang flights

Top 2 airlines flying from Heathrow to Vientiane

Discover the top 2 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 16 February 2026.
AirlineCheapestAverageFlexibilityOn-time
China EasternCheapest£563Average£660FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
Thai AirwaysCheapest£773Average£848FlexibilityNo 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 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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