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Cheap flights from Castries to London from £519

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Castries to London departing on 21/10. 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
1 adult, Economy, 0 bags

Find the cheapest flights from Castries to London

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
15:45 - 09:20SLU  Castries George F. L. Charle-LHR London Heathrow
12h 35m1 stop Bridgetown Grantley Adams Intl
Multiple Airlines Logo
09:35 - 19:00LHR  London Heathrow-SLU Castries George F. L. Charle
14h 25m1 stop Bridgetown Grantley Adams Intl
£993Multiple Airlines
Thu, 17 Sep - Thu, 24 Sep
Multiple Airlines Logo
12:35 - 06:15SLU  Castries George F. L. Charle-LHR London Heathrow
12h 40m1 stop Bridgetown Grantley Adams Intl
Multiple Airlines Logo
13:25 - 19:00LHR  London Heathrow-SLU Castries George F. L. Charle
33h 35m1 stop Bridgetown Grantley Adams Intl
£1,025Multiple Airlines
Sun, 11 Oct - Sat, 31 Oct
Multiple Airlines Logo
12:35 - 06:15SLU  Castries George F. L. Charle-LHR London Heathrow
12h 40m1 stop Bridgetown Grantley Adams Intl
Multiple Airlines Logo
13:25 - 15:15LHR  London Heathrow-SLU Castries George F. L. Charle
29h 50m1 stop Bridgetown Grantley Adams Intl
£1,113Multiple Airlines
Mon, 28 Sep - Wed, 4 Nov
Multiple Airlines Logo
15:45 - 09:20SLU  Castries George F. L. Charle-LHR London Heathrow
12h 35m1 stop Bridgetown Grantley Adams Intl
Multiple Airlines Logo
14:45 - 12:05LHR  London Heathrow-SLU Castries George F. L. Charle
25h 20m1 stop Bridgetown Grantley Adams Intl
£1,122Multiple Airlines
Sun, 11 Oct - Sat, 31 Oct
Multiple Airlines Logo
19:40 - 11:55SLU  Castries George F. L. Charle-LHR London Heathrow
35h 15m3 stops Port of Spain Piarco Intl New York John F Kennedy Intl Reykjavik Keflavik Intl
Multiple Airlines Logo
13:05 - 13:10LHR  London Heathrow-SLU Castries George F. L. Charle
29h 05m3 stops Reykjavik Keflavik Intl New York John F Kennedy Intl Port of Spain Piarco Intl
£1,130Multiple Airlines
Mon, 7 Sep - Wed, 16 Sep
Multiple Airlines Logo
18:55 - 20:10SLU  Castries George F. L. Charle-LHR London Heathrow
20h 15m2 stops Port of Spain Piarco Intl New York John F Kennedy Intl
Multiple Airlines Logo
12:15 - 14:30LHR  London Heathrow-SLU Castries George F. L. Charle
30h 15m3 stops Reykjavik Keflavik Intl Newark Port of Spain Piarco Intl
£1,170Multiple Airlines
Sun, 11 Oct - Sat, 31 Oct
Multiple Airlines Logo
13:55 - 14:15SLU  Castries George F. L. Charle-LHR London Heathrow
19h 20m2 stops Pointe-à-Pitre Le Raizet Paris Orly
Multiple Airlines Logo
13:05 - 14:35LHR  London Heathrow-SLU Castries George F. L. Charle
30h 30m3 stops Reykjavik Keflavik Intl New York John F Kennedy Intl Port of Spain Piarco Intl
£1,196Multiple Airlines
Thu, 17 Sep - Thu, 24 Sep
Multiple Airlines Logo
15:45 - 11:50SLU  Castries George F. L. Charle-LHR London Heathrow
39h 05m2 stops Bridgetown Grantley Adams Intl Toronto Pearson Intl
Multiple Airlines Logo
09:35 - 19:00LHR  London Heathrow-SLU Castries George F. L. Charle
14h 25m1 stop Bridgetown Grantley Adams Intl
£1,208Multiple Airlines
Thu, 17 Sep - Thu, 24 Sep
Multiple Airlines Logo
15:45 - 08:30SLU  Castries George F. L. Charle-LHR London Heathrow
12h 45m1 stop Bridgetown Grantley Adams Intl
Multiple Airlines Logo
13:25 - 15:15LHR  London Heathrow-SLU Castries George F. L. Charle
29h 50m1 stop Bridgetown Grantley Adams Intl
£1,228Multiple Airlines
Thu, 31 Dec - Thu, 21 Jan
Multiple Airlines Logo
15:45 - 09:20SLU  Castries George F. L. Charle-LHR London Heathrow
12h 35m1 stop Bridgetown Grantley Adams Intl
Multiple Airlines Logo
13:05 - 14:35LHR  London Heathrow-SLU Castries George F. L. Charle
30h 30m3 stops Reykjavik Keflavik Intl New York John F Kennedy Intl Port of Spain Piarco Intl
£1,251Multiple Airlines
Thu, 17 Sep - Thu, 24 Sep

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momondo Fare Finder

 
Customise your flight search to find flights from Castries to London 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 6 August 2026.
Use the filters below to find and compare flights from Castries to London that are best for you.

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Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

CastriesLondon

SLU Castries George F. L. Charle - LHR London Heathrow

SLULHR

Castries George F. L. Charle

Thu 17/9

15:45-09:20

1 stop12h 35m

London Heathrow

Thu 24/9

09:35-19:00

1 stop14h 25m

£993

CastriesLondon

SLU Castries George F. L. Charle - LHR London Heathrow

SLULHR

Castries George F. L. Charle

Sun 11/10

12:35-06:15

1 stop12h 40m

London Heathrow

Sat 31/10

13:25-19:00

1 stop33h 35m

£1,025

CastriesLondon

SLU Castries George F. L. Charle - LHR London Heathrow

SLULHR

Castries George F. L. Charle

Mon 28/9

12:35-06:15

1 stop12h 40m

London Heathrow

Wed 4/11

13:25-15:15

1 stop29h 50m

£1,113

CastriesLondon

SLU Castries George F. L. Charle - LHR London Heathrow

SLULHR

Castries George F. L. Charle

Sun 11/10

15:45-09:20

1 stop12h 35m

London Heathrow

Sat 31/10

14:45-12:05

1 stop25h 20m

£1,122

CastriesLondon

SLU Castries George F. L. Charle - LHR London Heathrow

SLULHR

Castries George F. L. Charle

Mon 7/9

19:40-11:55

3 stops35h 15m

London Heathrow

Wed 16/9

13:05-13:10

3 stops29h 05m

£1,130

CastriesLondon

SLU Castries George F. L. Charle - LHR London Heathrow

SLULHR

Castries George F. L. Charle

Sun 11/10

18:55-20:10

2 stops20h 15m

London Heathrow

Sat 31/10

12:15-14:30

3 stops30h 15m

£1,170

CastriesLondon

SLU Castries George F. L. Charle - LHR London Heathrow

SLULHR

Castries George F. L. Charle

Thu 17/9

13:55-14:15

2 stops19h 20m

London Heathrow

Thu 24/9

13:05-14:35

3 stops30h 30m

£1,196

CastriesLondon

SLU Castries George F. L. Charle - LHR London Heathrow

SLULHR

Castries George F. L. Charle

Thu 17/9

15:45-11:50

2 stops39h 05m

London Heathrow

Thu 24/9

09:35-19:00

1 stop14h 25m

£1,208

CastriesLondon

SLU Castries George F. L. Charle - LHR London Heathrow

SLULHR

Castries George F. L. Charle

Thu 31/12

15:45-08:30

1 stop12h 45m

London Heathrow

Thu 21/1

13:25-15:15

1 stop29h 50m

£1,228

CastriesLondon

SLU Castries George F. L. Charle - LHR London Heathrow

SLULHR

Castries George F. L. Charle

Thu 17/9

15:45-09:20

1 stop12h 35m

London Heathrow

Thu 24/9

13:05-14:35

3 stops30h 30m

£1,251

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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2

When to book flights from Castries to London

Are you open to changing your travel dates? Check out the ideal times to fly from Castries to London according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Castries to London (SLU to LON) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Castries to London

Fastest flight time

12h 40m

Direct flights

None
The fastest flight from Castries to London takes 12h 40m
There are no direct flights from Castries to London. There are no popular flight routes from Castries to London.
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Frequently asked questions about flying from Castries to London

  • How far is Castries George F. L. Charle to London by plane?

    Castries George F. L. Charle and London are 4217.4 mi apart from one another. Typically, this will take 12h 40m by plane in normal conditions.

  • When did momondo last update prices for flights from Castries George F. L. Charle Airport to London?

    Prices for flights from Castries George F. L. Charle Airport to London are refreshed on a daily basis.

  • How old do you have to be to fly from Castries George F. L. Charle Airport to London?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Castries George F. L. Charle Airport to London.

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

    The necessary travel and health documents for your London trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Frequently asked questions about flying from Castries to London

  • How do I get Price Alerts for flights from Castries to London?

    Price Alerts will notify you by email when the price for flights to London from Castries decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.

  • How can I save money on flights from Castries to London with momondo?

    Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Eastbourne
Wembley
Gatwick
Milton Keynes
Luton
Southend-on-Sea
Slough
Ipswich
Maidstone
Folkestone
Ilford
Hastings
Canterbury
Guildford
Chichester
Hayes
Bedford
Harlow
Colchester
Chelmsford

Why use momondo?

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

Finding the right flight to London from Castries 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 Castries to London with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to London from Castries with this policy.

How can momondo help me find flights from Castries to London?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to London from Castries.

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

If you are not ready to book a flight from Castries to London now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to London and let you know when they change.

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Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London
London City Airport
London Gatwick Airport
London Heathrow Airport
London Luton Airport
London Southend Airport
London Stansted Airport