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Cheap flights from Saint Lucia to London from £441

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Saint Lucia to London departing on 3/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
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Find the cheapest flights from Saint Lucia to London

Recent return flight deals from Saint Lucia to London

Enter your travel dates to find the best prices.
Air Canada Logo
15:05 - 08:35
UVF
-
LHR
36h 30m
2 stops
Air Canada Logo
14:10 - 14:20
LHR
-
UVF
53h 10m
2 stops
£914Air Canada
Tue, 5 May - Wed, 1 Jul
Air Canada Logo
15:05 - 11:50
UVF
-
LHR
15h 45m
1 stop
Air Canada Logo
12:40 - 14:20
LHR
-
UVF
54h 40m
2 stops
£917Air Canada
Tue, 5 May - Wed, 1 Jul
Multiple Airlines Logo
15:05 - 11:50
UVF
-
LHR
15h 45m
1 stop
Multiple Airlines Logo
09:30 - 12:10
LHR
-
UVF
31h 40m
2 stops
£945Multiple Airlines
Tue, 12 May - Fri, 29 May
Multiple Airlines Logo
16:22 - 09:35
UVF
-
LHR
36h 13m
2 stops
Multiple Airlines Logo
15:00 - 16:25
LHR
-
UVF
29h 25m
1 stop
£947Multiple Airlines
Sat, 23 May - Sat, 7 Nov
Multiple Airlines Logo
15:05 - 06:30
UVF
-
LHR
34h 25m
2 stops
Multiple Airlines Logo
09:30 - 12:10
LHR
-
UVF
31h 40m
2 stops
£948Multiple Airlines
Tue, 12 May - Fri, 29 May
Multiple Airlines Logo
16:22 - 09:35
UVF
-
LHR
36h 13m
2 stops
Multiple Airlines Logo
13:00 - 16:25
LHR
-
UVF
31h 25m
2 stops
£949Multiple Airlines
Sat, 23 May - Sat, 7 Nov
Multiple Airlines Logo
14:30 - 11:50
UVF
-
LHR
16h 20m
1 stop
Multiple Airlines Logo
19:45 - 14:10
LHR
-
UVF
47h 25m
3 stops
£954Multiple Airlines
Sun, 7 Jun - Sun, 14 Jun
Air Canada Logo
15:05 - 11:50
UVF
-
LHR
15h 45m
1 stop
Air Canada Logo
17:15 - 14:10
LHR
-
UVF
49h 55m
2 stops
£1,021Air Canada
Fri, 22 May - Sun, 7 Jun
Multiple Airlines Logo
14:30 - 06:20
SLU
-
LHR
34h 50m
2 stops
Multiple Airlines Logo
11:20 - 13:10
LHR
-
SLU
30h 50m
2 stops
£1,060Multiple Airlines
Tue, 12 May - Fri, 29 May
Multiple Airlines Logo
15:05 - 21:00
UVF
-
LHR
24h 55m
2 stops
Multiple Airlines Logo
17:40 - 15:31
LHR
-
UVF
26h 51m
2 stops
£1,063Multiple Airlines
Fri, 17 Jul - Fri, 31 Jul

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British Airways flights from Saint Lucia to London Heathrow Airport

Our best British Airways deals on Saint Lucia to London Heathrow Airport flight tickets
British Airways
30 Apr
UVF14:45Castries Hewanorra
15h 20m
1 stop
LHR11:05London Heathrow
30 May
LHR12:15London Heathrow
30h 33m
1 stop
UVF13:48Castries Hewanorra
£1,420
British Airways
23 May
UVF15:16Castries Hewanorra
15h 54m
1 stop
LHR12:10London Heathrow
7 Nov
LHR13:50London Heathrow
29h 10m
1 stop
UVF15:00Castries Hewanorra
£1,423

American Airlines flights from Saint Lucia to London Heathrow Airport

Our best American Airlines deals on Saint Lucia to London Heathrow Airport flight tickets
American Airlines
25 Sept
UVF16:00Castries Hewanorra
15h 35m
1 stop
LHR12:35London Heathrow
3 Oct
LHR20:10London Heathrow
22h 40m
2 stops
UVF13:50Castries Hewanorra
£1,380
American Airlines
25 Sept
UVF16:00Castries Hewanorra
22h 45m
2 stops
LHR19:45London Heathrow
3 Oct
LHR20:10London Heathrow
22h 40m
2 stops
UVF13:50Castries Hewanorra
£1,383
American Airlines
25 Sept
UVF16:00Castries Hewanorra
22h 45m
2 stops
LHR19:45London Heathrow
3 Oct
LHR18:05London Heathrow
24h 45m
2 stops
UVF13:50Castries Hewanorra
£1,384

momondo Fare Finder

 
Customise your flight search to find flights from Saint Lucia to London Heathrow Airport 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, momondo users made 279,928 searches. Data last updated 25 April 2026.
Use the filters below to find and compare flights from Saint Lucia to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Tue 5/5

15:05-08:35

2 stops36h 30m

London Heathrow

Wed 1/7

14:10-14:20

2 stops53h 10m

£914

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Tue 5/5

15:05-11:50

1 stop15h 45m

London Heathrow

Wed 1/7

12:40-14:20

2 stops54h 40m

£917
Fastest return journey

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Tue 12/5

15:05-11:50

1 stop15h 45m

London Heathrow

Fri 29/5

09:30-12:10

2 stops31h 40m

£945

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Sat 23/5

16:22-09:35

2 stops36h 13m

London Heathrow

Sat 7/11

15:00-16:25

1 stop29h 25m

£947

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Tue 12/5

15:05-06:30

2 stops34h 25m

London Heathrow

Fri 29/5

09:30-12:10

2 stops31h 40m

£948

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Sat 23/5

16:22-09:35

2 stops36h 13m

London Heathrow

Sat 7/11

13:00-16:25

2 stops31h 25m

£949

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Sun 7/6

14:30-11:50

1 stop16h 20m

London Heathrow

Sun 14/6

19:45-14:10

3 stops47h 25m

£954

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Fri 22/5

15:05-11:50

1 stop15h 45m

London Heathrow

Sun 7/6

17:15-14:10

2 stops49h 55m

£1,021

CastriesLondon

SLU - LHR

SLULHR

Castries George F. L. Charle

Tue 12/5

14:30-06:20

2 stops34h 50m

London Heathrow

Fri 29/5

11:20-13:10

2 stops30h 50m

£1,060

CastriesLondon

UVF - LHR

UVFLHR

Castries Hewanorra

Fri 17/7

15:05-21:00

2 stops24h 55m

London Heathrow

Fri 31/7

17:40-15:31

2 stops26h 51m

£1,063

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to London from

How to get the cheapest flight ticket from Saint Lucia to London Heathrow Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest Saint Lucia to London Heathrow flight route?

Fly from Castries Hewanorra to London Heathrow for the best Saint Lucia - London Heathrow flight prices

What cabin class options are available on Saint Lucia to London Heathrow Airport flights?

There is only 1 cabin class available to choose from on Saint Lucia to London Heathrow Airport flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Saint Lucia to London Heathrow Airport flights?

You could potentially save up to 9% on your flight if you consider stops on a Saint Lucia to London Heathrow Airport flight.

Cheap Saint Lucia to London Heathrow Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Saint Lucia to London Heathrow Airport

Fastest flight time

15h 45m

Direct flights

None
The fastest flight from Saint Lucia to London Heathrow Airport takes 15h 45m
There are no direct flights from Saint Lucia to London Heathrow Airport. There are no popular flight routes from Saint Lucia to London Heathrow Airport.
Search flight deals

Frequently asked questions about flying from Saint Lucia to London Heathrow Airport

  • When did momondo last update prices for flights from Saint Lucia to London Heathrow Airport?

    Prices for flights from Saint Lucia to London Heathrow Airport were last updated today.

  • How old do you have to be to fly from Saint Lucia to London Heathrow Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Saint Lucia to London Heathrow Airport.

  • What documentation or ID do you need to fly to London Heathrow Airport?

    The required travel and health documents for your London Heathrow Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London Heathrow Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Saint Lucia to London Heathrow Airport?

Travelling to a place near London?

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Ipswich
Canterbury
Ilford
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Poole
Hayes
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Chelmsford
Folkestone

Why use momondo?

Why should I use momondo to find a flight deal from Saint Lucia to London?

Finding the right flight to London from Saint Lucia is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to London quick and easy, saving you time and money.

Can I find flights from Saint Lucia to London with flexible booking policies on momondo?

Yes. All flights to London from Saint Lucia on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Saint Lucia to London?

Once you have performed a search for Saint Lucia to London flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Saint Lucia to London right now. Can momondo alert me if prices change?

If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from Saint Lucia and alert you when they change.

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