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Cheap flights from Saint Lucia to London Heathrow Airport from £396

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 23/3. Fares are subject to change and may not be available on all flights or dates of travel.
UVF — LHR
10 Dec — 17 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Saint Lucia to Heathrow

Keep the following information in mind while searching for Saint Lucia to Heathrow flight deals. Data was last updated 10 November 2025.

Round-trip from

£700

One-way from

£396
Icelandair
  • Icelandair
  • 30/1-27/2
  • 4 total stops
  • 84h 35m total
  • Saint Lucia to London
Search Deals
JetBlue
  • JetBlue
  • 23/3
  • 1 total stop
  • 24h 51m total
  • Saint Lucia to London
Search Deals

Find flight deals from Saint Lucia to Heathrow

Enter your travel dates to find the best prices.

Cheapest flights from Saint Lucia to Heathrow
Explore the most affordable flight options available from Saint Lucia to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 November 2025.

Mon 15/1216:57UVF - LHR
2 stops33h 58mIcelandair
Sun 18/109:20LHR - UVF
2 stops57h 55mIcelandair
Deal found 8/11£812
Sun 9/1105:00SLU - LHR
3 stops35h 10mMultiple Airlines
Sat 15/1108:40LHR - SLU
3 stops34h 35mMultiple Airlines
Deal found 8/11£820
Sun 30/1117:15UVF - LHR
2 stops23h 20mAir Canada
Mon 12/113:45LHR - UVF
2 stops54h 35mAir Canada
Deal found 10/11£867
Sun 9/1117:15UVF - LHR
3 stops33h 45mMultiple Airlines
Sat 15/1113:30LHR - UVF
3 stops30h 55mMultiple Airlines
Deal found 8/11£899
Thu 13/1116:57UVF - LHR
2 stops33h 58mIcelandair
Thu 27/1109:20LHR - UVF
2 stops60h 19mIcelandair
Deal found 8/11£922
Fri 28/1117:01UVF - LHR
1 stop24h 59mJetBlue
Fri 9/112:20LHR - UVF
1 stop29h 05mJetBlue
Deal found 10/11£1,057
Mon 15/1216:20SLU - LHR
3 stops35h 40mMultiple Airlines
Sun 18/112:25LHR - SLU
3 stops31h 10mMultiple Airlines
Deal found 9/11£1,082
Mon 17/1116:20SLU - LHR
3 stops35h 45mMultiple Airlines
Wed 10/1212:10LHR - SLU
3 stops29h 00mMultiple Airlines
Deal found 9/11£1,162

Cheapflights Fare Finder

 
Customise your flight search to find flights from Saint Lucia to Heathrow 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 10 November 2025.
Use the filters below to find and compare flights from Saint Lucia to London Heathrow Airport that are best for you.

Fly from

Saint Lucia

Fly to

Heathrow

Route

Depart

Return

Price

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Fri 30/1

16:50-10:10

2 stops37h 20m

London Heathrow

Fri 27/2

20:45-16:00

2 stops47h 15m

£700

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Fri 23/1

16:50-11:25

2 stops38h 35m

London Heathrow

Fri 20/2

09:50-12:18

2 stops30h 28m

£790

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Mon 15/12

16:57-06:55

2 stops33h 58m

London Heathrow

Sun 18/1

09:20-15:15

2 stops57h 55m

£812

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Sun 30/11

17:15-20:35

2 stops23h 20m

London Heathrow

Mon 12/1

13:45-16:20

2 stops54h 35m

£908

CastriesLondon

SLU - LHR

SLULHR

Castries George F. L. Charle

Fri 23/1

15:45-08:30

1 stop12h 45m

London Heathrow

Fri 20/2

13:25-15:15

1 stop29h 50m

£931

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Thu 26/3

14:20-12:05

1 stop17h 45m

London Heathrow

Mon 30/3

17:35-13:30

2 stops24h 55m

£987

CastriesLondon

SLU - LHR

SLULHR

Castries George F. L. Charle

Fri 30/1

19:10-20:10

2 stops21h 00m

London Heathrow

Fri 27/2

09:55-13:10

2 stops31h 15m

£1,048

CastriesLondon

SLU - LHR

SLULHR

Castries George F. L. Charle

Mon 15/12

16:20-08:00

3 stops35h 40m

London Heathrow

Sun 18/1

12:25-15:35

3 stops31h 10m

£1,082

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Mon 23/3

15:54-20:45

1 stop24h 51m

£396

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Thu 22/1

15:40-12:50

2 stops41h 10m

£419

Flights are sorted by cheapest return flights first.

Deals found on 9/11

Showing 1-10 of 25 results
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Best time to book a flight from Saint Lucia to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Saint Lucia 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 Saint Lucia to London Heathrow Airport

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

Currently, December is the cheapest month in which you can book a flight from Saint Lucia to London Heathrow Airport (average of £583). Flying from Saint Lucia to London Heathrow Airport in October is currently the most expensive (average of £923). 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 Heathrow

Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated 10 November 2025.
See what other customers who have flown with Virgin Atlantic from Saint Lucia to London Heathrow Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Virgin Atlantic
7.5
Good
672 reviews
Check prices

Crew

8.1

Entertainment

7.5

Boarding

7.7

Food

6.9

Overall

7.5

Comfort

7.3

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Virgin Atlantic
7.5
Good
672 reviews
Virgin Atlantic
7.5
Good
672 reviews
Check prices

Crew

8.1

Entertainment

7.5

Boarding

7.7

Food

6.9

Overall

7.5

Comfort

7.3

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!

Related info for your journey

Find useful and relevant information for your journey from Saint Lucia to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    Departing from Saint Lucia to London Heathrow Airport will take you 37h 20m. Saint Lucia and London Heathrow Airport are separated by a distance of 4217 mi.

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

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

  • How can I find direct flights from Saint Lucia to Heathrow?

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

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

    Yes. Cheapflights offers flight deals from Saint Lucia to Heathrow 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 Saint Lucia to London Heathrow Airport?

    Currently, December is the cheapest month in which you can book a flight from Saint Lucia to London Heathrow Airport (average of £583). Flying from Saint Lucia to London Heathrow Airport in October is currently the most expensive (average of £923). 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

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Croydon
Slough
Gatwick
Hounslow
Northampton
Luton
Ilford
Wembley
Deal
Hayes
Colchester
Watford
Winchester
Swindon
Crawley
Brentford
Romford
Chichester
Ipswich

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Alternative routes for Saint Lucia to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Saint Lucia to Heathrow

Discover the top airline that operate flights from Saint Lucia to Heathrow. 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 10 November 2025.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£582Average£707FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Saint Lucia to Heathrow?

Cheapflights makes it easy to find Saint Lucia to Heathrow flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Heathrow from Saint Lucia.

Can Cheapflights find flights from Saint Lucia to Heathrow with no change fees?

Need flexible booking options for your flight to Heathrow from Saint Lucia? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Yes! Start tracking prices for Saint Lucia to Heathrow 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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