Find flights
When to book
Airlines
FAQs

Cheap flights from London Heathrow Airport to Vientiane from £340

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 21/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — VTE
20 Apr — 27 Apr1
1 adult

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 15 April 2025.

Round-trip from

£451

One-way from

£340

Popular in

December

Cheapest in

January

Average price

£805
China Southern
  • China Southern
  • 30/5-6/6
  • 3 total stops
  • 66h 55m total
  • London to Vientiane
Search Deals
China Eastern
  • China Eastern
  • 21/4
  • 3 total stops
  • 30h 15m total
  • London to Vientiane
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£35 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 April 2025
Search Deals

Find flight deals from Heathrow to Vientiane

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 15 April 2025.

Fri 30/522:10LHR - VTE
1 stop37h 35mChina Southern
Fri 6/618:45VTE - LHR
2 stops29h 20mChina Southern
Deal found 15/4£451
Thu 29/522:10LHR - VTE
1 stop37h 35mMultiple Airlines
Thu 5/623:20VTE - LHR
1 stop25h 20mMultiple Airlines
Deal found 14/4£543
Tue 13/521:20LHR - VTE
3 stops30h 15mChina Eastern
Tue 20/510:35VTE - LHR
2 stops38h 05mChina Eastern
Deal found 14/4£609
Tue 25/1111:00LHR - VTE
2 stops25h 00mVietnam Airlines
Fri 12/1211:35VTE - LHR
2 stops26h 40mVietnam Airlines
Deal found 15/4£752
Tue 28/1011:50LHR - VTE
1 stop18h 15mThai Airways
Fri 7/1120:30VTE - LHR
1 stop17h 10mThai Airways
Deal found 15/4£894
Thu 21/811:25LHR - VTE
1 stop18h 30mSingapore Airlines
Sun 31/812:30VTE - LHR
1 stop37h 00mSingapore Airlines
Deal found 14/4£939
Wed 29/1007:40LHR - VTE
2 stops29h 05mLufthansa
Thu 6/1120:30VTE - LHR
2 stops29h 05mLufthansa
Deal found 15/4£1,152
Fri 31/1014:50LHR - VTE
2 stops21h 55mAustrian Airlines
Tue 11/1120:30VTE - LHR
2 stops32h 10mAustrian Airlines
Deal found 15/4£6,571

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 15 April 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 30/5

22:10-17:45

1 stop37h 35m

Vientiane Wattay

Fri 6/6

18:45-18:05

2 stops29h 20m

£451

LondonVientiane

LHR - VTE

LHRVTE

London Heathrow

Thu 29/5

22:10-17:45

1 stop37h 35m

Vientiane Wattay

Thu 5/6

23:20-18:40

1 stop25h 20m

£543

LondonVientiane

LHR - VTE

LHRVTE

London Heathrow

Tue 13/5

21:20-09:35

3 stops30h 15m

Vientiane Wattay

Tue 20/5

10:35-18:40

2 stops38h 05m

£609

LondonVientiane

LHR - VTE

LHRVTE

London Heathrow

Thu 21/8

11:25-11:55

1 stop18h 30m

Vientiane Wattay

Sun 31/8

12:30-19:30

1 stop37h 00m

£939

LondonVientiane

LHR - VTE

LHRVTE

London Heathrow

Fri 16/5

06:15-19:15

3 stops31h 00m

Vientiane Wattay

Sat 14/6

11:30-17:50

3 stops36h 20m

£973

LondonVientiane

LHR - VTE

LHRVTE

London Heathrow

Fri 22/8

12:30-12:40

1 stop18h 10m

Vientiane Wattay

Sun 31/8

13:30-19:10

1 stop35h 40m

£1,014

LondonVientiane

LHR - VTE

LHRVTE

London Heathrow

Mon 21/4

21:20-09:35

3 stops30h 15m

£340

LondonVientiane

LHR - VTE

LHRVTE

London Heathrow

Mon 21/4

22:10-17:45

1 stop37h 35m

£375

LondonVientiane

LHR - VTE

LHRVTE

London Heathrow

Mon 21/4

08:05-15:35

3 stops25h 30m

£524

Flights are sorted by cheapest return flights first.

Deals found on 15/4

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

Rainfall in Vientiane by month

Plan your trip to Vientiane by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Vientiane ranges from 10.0 - 120.0 inches per month. July is typically the wettest month, when rainfall can reach 120.0 mm. January is typically the driest time to visit Vientiane when rainfall is around 10.0 mm.

Temperature in Vientiane by month

Plan your trip to Vientiane by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Vientiane, 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 29.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 22.0 C).

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 15 April 2025.
Singapore Airlines
8.1
Very Good
1,288 reviews
Check prices

Overall

8.1

Entertainment

8.0

Crew

8.6

Food

7.7

Comfort

7.9

Boarding

8.2

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
Singapore Airlines
8.1
Very Good
1,288 reviews
Singapore Airlines
8.1
Very Good
1,288 reviews
Check prices

Overall

8.1

Entertainment

8.0

Crew

8.6

Food

7.7

Comfort

7.9

Boarding

8.2

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
Thai Airways
7.7
Good
323 reviews
Singapore Airlines
8.1
Very Good
1,288 reviews
Check prices

Overall

8.1

Entertainment

8.0

Crew

8.6

Food

7.7

Comfort

7.9

Boarding

8.2

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
Vietnam Airlines
7.6
Good
194 reviews
Singapore Airlines
8.1
Very Good
1,288 reviews
Check prices

Overall

8.1

Entertainment

8.0

Crew

8.6

Food

7.7

Comfort

7.9

Boarding

8.2

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
China Southern
7.5
Good
94 reviews
Singapore Airlines
8.1
Very Good
1,288 reviews
Check prices

Overall

8.1

Entertainment

8.0

Crew

8.6

Food

7.7

Comfort

7.9

Boarding

8.2

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.
China Eastern
7.2
Good
143 reviews
Singapore Airlines
8.1
Very Good
1,288 reviews
Check prices

Overall

8.1

Entertainment

8.0

Crew

8.6

Food

7.7

Comfort

7.9

Boarding

8.2

Reviews

1 / 20
6.0
Good

Pierre,Apr 2025

MLE - SIN

3 boarding pass checkpoints at the gate. Long line before boarding. Poor leg room in economy.. Flight crew rounds practically non existent during flight.

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.

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

    Currently priced at £451, 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 Singapore Airlines - these airlines can fly you to your destination from £609 and £939, respectively. You may be able to fly from London Heathrow Airport to Vientiane for 46% 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.

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 Vientiane

See prices for flight routes from nearby airports that may be better suited for you.
Gatwick to Vientiane flights
Stansted to Vientiane flights
Heathrow to Luang Prabang flights
London City to Vientiane flights
Gatwick to Luang Prabang flights
Stansted to Luang Prabang 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 15 April 2025.
AirlineCheapestAverageFlexibilityOn-time
China SouthernCheapest£489Average£546FlexibilityNo cancel feeOn-time69%
Search China Southern flights
China EasternCheapest£584Average£666FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
Thai AirwaysCheapest£789Average£834FlexibilityNo 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.

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.
Site
©2025 Cheapflights