What is the cheapest airline to fly from London to Castries round-trip?

British Airways, at £404, was found to be the cheapest airline from London to Castries.. British Airways is priced at 32% lower than the current average price of a flight leaving 3 months from now.

What is the cheapest day to fly from London to Castries?

Travellers seeking maximum savings on their London to Castries flight should consider departing on Sunday mornings when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

What is the cheapest day to fly round-trip from London to Castries?

Departing on a Saturday is a good option for securing a great price. You can expect to save up to 29% when planning your travel around this day of the week.

What is the cheapest month to fly from London to Castries?

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, September can be a great choice for travel to Castries. Flights to Castries from London in September are about £602 on average during September, but can be found for as low as £405.

What is the cheapest time of day to fly from LON to SLU?

It’s typically best to fly out from London to Castries in the morning. Doing so could potentially save you 30% on the flight price compared to flying in the afternoon, which is usually more expensive.

What airport do you fly into for flights to Castries from London?

For a flight from London to Castries, you will be flying into George F. L. Charle. Castries George F. L. Charle (SLU) is just 0.7 mi from the center of the city. George F. L. Charle is the only Castries airport and it handles 0 inbound flights from London per day. 1 airline has flights to Castries George F. L. Charle from London on a regular basis.

Can I find deals for flights from London to Castries that include hotel bookings?

Yes. In addition to deals on London to Castries flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from London to Castries?

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

Can I find deals for business class flights from London to Castries?

Yes. Cheapflights offers flight deals from London to Castries by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£517+ Cheap Flights from London to Castries

Q: How much does it cost for a return flight from London to Castries?

Airfare is above average for this route at the moment. London to Castries flights typically cost between £437 and £489 in September. The cheapest return flight price found within the last 3 days was £636 on Multiple Airlines (22 Sept-5 Oct).

Cheap flight deals from London to Castries

Round-trip from	£636
One-way from	£517
Popular in	December
Cheapest in	September
Average price	£692
Good round-trip deal	£549 or less
Good one-way deal	£351 or less

22/9-5/10
2 total stops
29h 05m total
London to Castries

Search Deals

7/9
2 total stops
35h 10m total
London to Castries

Search Deals

Highest demand for flights based on searches. 11% potential increase in price (£58 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 6% potential price decrease (£26 potential savings vs. average return price).

Search Deals

Average for round-trip flights in August 2025

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Price to beat on a round-trip flight from London (LON) to Castries George F. L. Charle.

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Price to beat on a one-way flight from London (LON) to Castries George F. L. Charle.

Search Deals

Find flight deals from London to Castries

Cheapest flights from London to Castries
Explore the most affordable flight options available from London to Castries. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 August 2025.

Mon 22/908:05LHR - SLU

1 stop14h 25mMultiple Airlines

Sun 5/1012:10SLU - LHR

1 stop14h 40mMultiple Airlines

Deal found 28/8£636

Thu 18/908:05LHR - SLU

1 stop11h 30mMultiple Airlines

Thu 2/1015:20SLU - LHR

1 stop11h 30mMultiple Airlines

Deal found 27/8£683

Mon 8/908:05LHR - SLU

1 stop14h 25mMultiple Airlines

Thu 18/915:20SLU - LHR

1 stop11h 30mMultiple Airlines

Deal found 27/8£699

Fri 26/911:25LHR - SLU

1 stop12h 35mMultiple Airlines

Fri 3/1012:35SLU - LHR

1 stop12h 45mMultiple Airlines

Deal found 27/8£748

Fri 7/1121:10LHR - SLU

2 stops42h 15mMultiple Airlines

Sun 23/1112:10SLU - LHR

1 stop17h 45mMultiple Airlines

Deal found 27/8£749

Fri 12/909:35LHR - SLU

2 stops32h 35mMultiple Airlines

Mon 22/916:35SLU - LHR

2 stops22h 25mMultiple Airlines

Deal found 28/8£785

Wed 10/911:25LHR - SLU

1 stop12h 35mMultiple Airlines

Wed 24/909:10SLU - LHR

1 stop16h 10mMultiple Airlines

Deal found 28/8£830

Fri 7/1112:55LGW - SLU

2 stops27h 10mMultiple Airlines

Sun 23/1109:10SLU - LGW

2 stops16h 10mMultiple Airlines

Deal found 27/8£887

Thu 18/916:30LGW - SLU

3 stops24h 00mMultiple Airlines

Thu 2/1018:20SLU - LGW

2 stops31h 00mMultiple Airlines

Deal found 27/8£897

Tue 2/912:40LGW - SLU

2 stops25h 50mMultiple Airlines

Tue 9/912:35SLU - LGW

3 stops21h 35mMultiple Airlines

Deal found 28/8£1,028

Sun 12/1012:40LGW - SLU

2 stops32h 10mMultiple Airlines

Mon 20/1015:45SLU - LGW

3 stops33h 35mMultiple Airlines

Deal found 28/8£1,088

Tue 2/912:40LGW - SLU

2 stops25h 50mMultiple Airlines

Wed 17/909:10SLU - LGW

2 stops20h 35mMultiple Airlines

Deal found 27/8£1,173

Best flights from London to Castries
Discover carefully curated flight deals from London to Castries that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 29 August 2025.

Mon 22/908:05LHR - SLU

1 stop14h 25mMultiple Airlines

Sun 5/1012:10SLU - LHR

1 stop14h 40mMultiple Airlines

Deal found 28/8£636

Thu 18/908:05LHR - SLU

1 stop11h 30mMultiple Airlines

Thu 2/1015:20SLU - LHR

1 stop11h 30mMultiple Airlines

Deal found 27/8£683

Mon 8/908:05LHR - SLU

1 stop14h 25mMultiple Airlines

Thu 18/915:20SLU - LHR

1 stop11h 30mMultiple Airlines

Deal found 27/8£699

Mon 2/213:20LHR - SLU

1 stop33h 40mMultiple Airlines

Mon 16/215:45SLU - LHR

1 stop12h 45mMultiple Airlines

Deal found 27/8£712

Fri 26/911:25LHR - SLU

1 stop12h 35mMultiple Airlines

Fri 3/1012:35SLU - LHR

1 stop12h 45mMultiple Airlines

Deal found 27/8£748

Fri 7/1121:10LHR - SLU

2 stops42h 15mMultiple Airlines

Sun 23/1112:10SLU - LHR

1 stop17h 45mMultiple Airlines

Deal found 27/8£749

Mon 2/208:00LHR - SLU

1 stop13h 30mMultiple Airlines

Thu 12/215:20SLU - LHR

1 stop14h 35mMultiple Airlines

Deal found 26/8£751

Wed 21/109:40LHR - SLU

1 stop32h 55mMultiple Airlines

Thu 5/215:20SLU - LHR

1 stop14h 35mMultiple Airlines

Deal found 27/8£777

Fri 12/909:35LHR - SLU

2 stops32h 35mMultiple Airlines

Mon 22/916:35SLU - LHR

2 stops22h 25mMultiple Airlines

Deal found 28/8£785

Fri 2/119:25LHR - SLU

2 stops44h 00mMultiple Airlines

Tue 20/107:30SLU - LHR

1 stop17h 55mMultiple Airlines

Deal found 27/8£793

Fri 7/1112:55LGW - SLU

2 stops27h 10mMultiple Airlines

Sun 23/1109:10SLU - LGW

2 stops16h 10mMultiple Airlines

Deal found 27/8£887

Thu 18/916:30LGW - SLU

3 stops24h 00mMultiple Airlines

Thu 2/1018:20SLU - LGW

2 stops31h 00mMultiple Airlines

Deal found 27/8£897

Last-minute flights from London to Castries
Discover last-minute flight deals from London to Castries. Data last updated 29 August 2025 and is based on user searches.

Tue 2/912:40LGW - SLU

2 stops25h 50mMultiple Airlines

Tue 9/912:35SLU - LGW

3 stops21h 35mMultiple Airlines

Deal found 28/8£1,028

Tue 2/912:40LGW - SLU

2 stops25h 50mMultiple Airlines

Wed 17/909:10SLU - LGW

2 stops20h 35mMultiple Airlines

Deal found 27/8£1,173

Mon 8/908:05LHR - SLU

1 stop14h 25mMultiple Airlines

Thu 18/915:20SLU - LHR

1 stop11h 30mMultiple Airlines

Deal found 27/8£699

Wed 10/911:25LHR - SLU

1 stop12h 35mMultiple Airlines

Wed 24/909:10SLU - LHR

1 stop16h 10mMultiple Airlines

Deal found 28/8£830

Fri 12/909:35LHR - SLU

2 stops32h 35mMultiple Airlines

Mon 22/916:35SLU - LHR

2 stops22h 25mMultiple Airlines

Deal found 28/8£785

Thu 18/908:05LHR - SLU

1 stop11h 30mMultiple Airlines

Thu 2/1015:20SLU - LHR

1 stop11h 30mMultiple Airlines

Deal found 27/8£683

Thu 18/916:30LGW - SLU

3 stops24h 00mMultiple Airlines

Thu 2/1018:20SLU - LGW

2 stops31h 00mMultiple Airlines

Deal found 27/8£897

Mon 22/908:05LHR - SLU

1 stop14h 25mMultiple Airlines

Sun 5/1012:10SLU - LHR

1 stop14h 40mMultiple Airlines

Deal found 28/8£636

Fri 26/911:25LHR - SLU

1 stop12h 35mMultiple Airlines

Fri 3/1012:35SLU - LHR

1 stop12h 45mMultiple Airlines

Deal found 27/8£748

One-way flights from London to Castries
Search for one-way flight options from London to Castries. Find affordable one-way fares based on user searches. Data last updated 29 August 2025.

Sun 7/909:40LGW - SLU

2 stops35h 10mMultiple Airlines

Deal found 28/8£517

Sun 7/917:40LHR - SLU

2 stops28h 50mMultiple Airlines

Deal found 27/8£662

Wed 3/1209:40LHR - SLU

1 stop32h 55mMultiple Airlines

Deal found 27/8£736

Tue 7/1021:20LGW - SLU

3 stops44h 50mMultiple Airlines

Deal found 27/8£747

Tue 7/1011:25LHR - SLU

1 stop12h 35mMultiple Airlines

Deal found 27/8£804

Sat 20/1212:15LHR - SLU

3 stops27h 30mMultiple Airlines

Deal found 27/8£1,005

Sat 20/1211:55LGW - SLU

3 stops27h 50mMultiple Airlines

Deal found 27/8£1,329

Fly from

Fly to

Route

Depart

Return

Price

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Mon 22/9

08:05-17:30

1 stop14h 25m

Castries George F. L. Charle

Sun 5/10

12:10-07:50

1 stop14h 40m

£636

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Thu 18/9

08:05-14:35

1 stop11h 30m

Castries George F. L. Charle

Thu 2/10

15:20-07:50

1 stop11h 30m

£683

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Mon 8/9

08:05-17:30

1 stop14h 25m

Castries George F. L. Charle

Thu 18/9

15:20-07:50

1 stop11h 30m

£699

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Mon 2/2

13:20-19:00

1 stop33h 40m

Castries George F. L. Charle

Mon 16/2

15:45-08:30

1 stop12h 45m

£712

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Fri 26/9

11:25-19:00

1 stop12h 35m

Castries George F. L. Charle

Fri 3/10

12:35-06:20

1 stop12h 45m

£748

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Fri 7/11

21:10-11:25

2 stops42h 15m

Castries George F. L. Charle

Sun 23/11

12:10-09:55

1 stop17h 45m

£749

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Mon 2/2

08:00-17:30

1 stop13h 30m

Castries George F. L. Charle

Thu 12/2

15:20-09:55

1 stop14h 35m

£751

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Wed 21/1

09:40-14:35

1 stop32h 55m

Castries George F. L. Charle

Thu 5/2

15:20-09:55

1 stop14h 35m

£777

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Fri 12/9

09:35-13:10

2 stops32h 35m

Castries George F. L. Charle

Mon 22/9

16:35-20:00

2 stops22h 25m

£785

LondonCastries

LHR - SLU

LHRSLU

London Heathrow

Fri 2/1

19:25-11:25

2 stops44h 00m

Castries George F. L. Charle

Tue 20/1

07:30-05:25

1 stop17h 55m

£793

Flights are sorted by cheapest return flights first.

Deals found on 27/8

Showing 1-10 of 23 results

Best time to book a flight from London to Castries

Have a flexible travel schedule? Discover the best time to fly to Castries from London 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 to Castries

How much does it cost for a return flight from London to Castries?

Reviews of airlines servicing Castries

Get a feel of what it's like to fly with British Airways from London to Castries by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

British Airways

6.7

Okay

7,320 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Aug 2025

LHR - FCO

The crew was wonderful. Service was great. The discomfort came from the passenger behind me kicking the seat.

British Airways

6.7

Okay

7,320 reviews

British Airways

6.7

Okay

7,320 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Anonymous,Aug 2025

LHR - FCO

The crew was wonderful. Service was great. The discomfort came from the passenger behind me kicking the seat.

Related info for your journey

What airport do you fly into for flights to Castries from London?
For a flight from London to Castries, you will be flying into George F. L. Charle. Castries George F. L. Charle (SLU) is just 0.7 mi from the center of the city. George F. L. Charle is the only Castries airport and it handles 0 inbound flights from London per day. 1 airline has flights to Castries George F. L. Charle from London on a regular basis.
What is the cheapest airline to fly from London to Castries round-trip?
British Airways, at £404, was found to be the cheapest airline from London to Castries.. British Airways is priced at 32% lower than the current average price of a flight leaving 3 months from now.
Can I find deals for flights from London to Castries that include hotel bookings?
Yes. In addition to deals on London to Castries flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from London to Castries?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Castries.
Can I find deals for business class flights from London to Castries?
Yes. Cheapflights offers flight deals from London to Castries 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

Gros Islet

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Alternative routes for London to Castries

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Manchester to Castries flights

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Birmingham to Castries flights

Edinburgh to Castries flights

Top airline flying from London to Castries

Airline	Cheapest	Average	Flexibility	On-time
British Airways	Cheapest£404	Average£561	FlexibilityNo cancel fee	On-time70%	Search British Airways flights

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How does Cheapflights help users find flights from London to Castries?

Cheapflights makes it easy to find London to Castries 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 London to Castries?

Cheapflights helps you find that perfect flight to Castries from London by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from London to Castries with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from London to Castries flexibly with Cheapflights today.

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Cheap flights from London to Castries from £517

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 7/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from London to Castries

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from London to Castries

Cheapest flights from London to CastriesExplore the most affordable flight options available from London to Castries. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 August 2025.

Explore the most affordable flight options available from London to Castries. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 August 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from London to Castries that are best for you.

Best time to book a flight from London to Castries

Have a flexible travel schedule? Discover the best time to fly to Castries from London with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from London to Castries

How much does it cost for a return flight from London to Castries?

Reviews of airlines servicing Castries

Get a feel of what it's like to fly with British Airways from London to Castries by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from London to Castries. 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 Castries from London?

What is the cheapest airline to fly from London to Castries round-trip?

Can I find deals for flights from London to Castries that include hotel bookings?

How can I find direct flights from London to Castries?

Can I find deals for business class flights from London to Castries?

Travelling to a place near Castries?

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 London to Castries

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from London to Castries

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 London to Castries?

Why should you use Cheapflights to find cheap flight tickets from London to Castries?

Can Cheapflights find flights from London to Castries with no change fees?

Can Cheapflights notify me if prices for flights from London to Castries become cheaper?

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from London to Castries
Explore the most affordable flight options available from London to Castries. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 August 2025.