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Cheap flights from London Heathrow Airport to Vientiane from £315

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 15/3. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — VTE
4 Apr — 11 Apr1
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 5 March 2026.

Wed 29/419:15
LHR
-
VTE
2 stops33h 15m
China Southern
Thu 14/511:30
VTE
-
LHR
1 stop37h 50m
China Southern
Deal found 5/3£529
Wed 13/521:20
LHR
-
VTE
3 stops29h 25m
China Eastern
Sun 17/515:50
VTE
-
LHR
2 stops32h 50m
China Eastern
Deal found 5/3£564
Mon 4/522:10
LHR
-
VTE
1 stop34h 35m
China Southern
Tue 19/511:30
VTE
-
LHR
1 stop37h 50m
China Southern
Deal found 5/3£569
Sat 28/1122:00
LHR
-
VTE
1 stop34h 05m
China Southern
Fri 11/1216:25
VTE
-
LHR
2 stops33h 10m
China Southern
Deal found 1/3£574
Thu 30/422:10
LHR
-
VTE
1 stop34h 35m
Multiple Airlines
Thu 14/521:35
VTE
-
LHR
2 stops27h 55m
Multiple Airlines
Deal found 5/3£578
Thu 30/421:20
LHR
-
VTE
2 stops29h 25m
China Eastern
Wed 13/501:05
VTE
-
LHR
1 stop23h 35m
China Eastern
Deal found 5/3£580
Mon 4/522:10
LHR
-
VTE
1 stop34h 35m
Multiple Airlines
Tue 19/521:35
VTE
-
LHR
1 stop27h 55m
Multiple Airlines
Deal found 5/3£591

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 5 March 2026.

Round-trip from

£529

One-way from

£315

Popular in

August

Cheapest in

September

Average price

£852
China Southern
  • China Southern
  • 29/4-14/5
  • 3 total stops
  • 71h 05m total
  • London to Vientiane
Search Deals
15/3
  • 15/3
  • 2 total stops
  • 30h 45m 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 (£28 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 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 5 March 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Vientiane that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonVientiane

LHR - VTE

LHRVTE

London Heathrow

Wed 13/5

21:20-08:45

2 stops29h 25m

Vientiane Wattay

Sun 17/5

13:45-18:40

3 stops34h 55m

£593

LondonVientiane

LHR - VTE

LHRVTE

London Heathrow

Mon 1/6

21:20-08:45

2 stops29h 25m

Vientiane Wattay

Mon 15/6

13:45-18:40

3 stops34h 55m

£694
Fastest return journey

LondonVientiane

LHR - VTE

LHRVTE

London Heathrow

Thu 16/4

21:20-12:45

2 stops33h 25m

Vientiane Wattay

Thu 23/4

18:50-18:40

2 stops29h 50m

£734

LondonVientiane

LHR - VTE

LHRVTE

London Heathrow

Mon 1/6

18:55-10:35

1 stop33h 40m

Vientiane Wattay

Mon 15/6

11:20-17:50

2 stops36h 30m

£752

LondonVientiane

LHR - VTE

LHRVTE

London Heathrow

Sat 18/4

21:20-12:45

2 stops33h 25m

Vientiane Wattay

Sat 25/4

09:45-18:40

3 stops38h 55m

£758

LondonVientiane

LHR - VTE

LHRVTE

London Heathrow

Sat 16/5

21:20-08:45

2 stops29h 25m

Vientiane Wattay

Wed 20/5

09:45-18:40

2 stops38h 55m

£760
Cheapest one-way

LondonVientiane

LHR - VTE

LHRVTE

London Heathrow

Sun 15/3

22:15-12:00

2 stops30h 45m

£315

LondonVientiane

LHR - VTE

LHRVTE

London Heathrow

Thu 12/3

19:00-07:35

3 stops53h 35m

£396

LondonVientiane

LHR - VTE

LHRVTE

London Heathrow

Tue 16/6

21:20-12:45

3 stops57h 25m

£421

LondonVientiane

LHR - VTE

LHRVTE

London Heathrow

Mon 23/3

08:45-14:55

2 stops23h 10m

£450

Flights are sorted by cheapest return flights first.

Deals found on 2/3

Showing 1-10 of 17 resultsSorted by cheapest first
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 £408). Flying from London Heathrow Airport to Vientiane in August is currently the most expensive (average of £1,218). 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 5 March 2026.
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
391 reviews
Check prices

Entertainment

6.9

Crew

8.4

Comfort

7.6

Boarding

7.9

Overall

7.8

Food

7.4

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
391 reviews
Thai Airways
7.8
Good
391 reviews
Check prices

Entertainment

6.9

Crew

8.4

Comfort

7.6

Boarding

7.9

Overall

7.8

Food

7.4

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 Southern
7.4
Good
142 reviews
Thai Airways
7.8
Good
391 reviews
Check prices

Entertainment

6.9

Crew

8.4

Comfort

7.6

Boarding

7.9

Overall

7.8

Food

7.4

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
198 reviews
Thai Airways
7.8
Good
391 reviews
Check prices

Entertainment

6.9

Crew

8.4

Comfort

7.6

Boarding

7.9

Overall

7.8

Food

7.4

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. 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 29h 25m. Fly via China Eastern to get the fastest option. The distance between London Heathrow Airport and Vientiane is about 5786 mi.

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

    Currently priced at £436, China Southern will fly you from London Heathrow Airport to Vientiane and back. In addition to China Southern, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from China Eastern and Thai Airways - these airlines can fly you to your destination from £549 and £817, respectively. You may be able to fly from London Heathrow Airport to Vientiane for 51% 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 £408). Flying from London Heathrow Airport to Vientiane in August is currently the most expensive (average of £1,218). 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
Heathrow to Luang Prabang flights
Stansted to Luang Prabang flights
Gatwick to Luang Prabang flights
Stansted to Vientiane 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 5 March 2026.
AirlineCheapestAverageFlexibilityOn-time
China SouthernCheapest£436Average£529FlexibilityNo cancel feeOn-time69%
Search China Southern flights
China EasternCheapest£549Average£676FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
Thai AirwaysCheapest£817Average£898FlexibilityNo 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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