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

When flying from London Heathrow Airport to Castries, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

Castries George F. L. Charle (SLU), located 0.7 mi from the city center, is the airport you fly into when you book flights from London Heathrow to Castries. 0 airlines have flights to George F. L. Charle from London Heathrow on a regular basis. Booking flights from London Heathrow to Castries George F. L. Charle should not be difficult; the airport handles an average of 0 inbound flights from London Heathrow per day.

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

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

How can I find direct flights from Heathrow to Castries?

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

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

Yes. Cheapflights offers flight deals from Heathrow 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.

£561+ Cheap Flights from London Heathrow Airport to Castries

Cheap flight deals from Heathrow to Castries

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from Heathrow to Castries
Explore the most affordable flight options available from Heathrow to Castries. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 24 September 2026.

Mon 2/1108:00 -

1 stop15h 00m

Sun 15/1115:45 -

1 stop15h 10m

Deal found 21/9£592

Tue 3/1114:45 -

1 stop25h 20m

Wed 25/1115:45 -

1 stop12h 10m

Deal found 23/9£603

Wed 4/1114:45 -

1 stop32h 15m

Wed 11/1115:45 -

1 stop12h 10m

Deal found 20/9£604

Mon 2/1108:00 -

1 stop15h 00m

Wed 25/1115:45 -

1 stop12h 10m

Deal found 22/9£620

Mon 7/1210:35 -

1 stop12h 25m

Tue 22/1212:35 -

1 stop13h 15m

Deal found 21/9£635

Wed 9/1210:35 -

1 stop32h 40m

Sun 13/1212:35 -

1 stop13h 15m

Deal found 20/9£657

Mon 2/1114:45 -

1 stop24h 15m

Mon 9/1116:50 -

1 stop11h 05m

Deal found 20/9£661

Find flight deals from Heathrow to Castries

Round-trip from	£592
One-way from	£561

2/11-15/11
2 total stops
30h 10m total
London to Castries

Search Deals

27/10-31/12
1 total stop
29h 50m total
London to Castries

Search Deals

Cheapflights Fare Finder

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

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Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonCastries

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

LHRSLU

London Heathrow

Tue 27/10

13:25-15:15

1 stop29h 50m

Castries George F. L. Charle

Wed 31/12

00:00-05:00

Nonstop0h 00m

£561

LondonCastries

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

LHRSLU

London Heathrow

Wed 6/1

08:00-19:00

1 stop15h 00m

Castries George F. L. Charle

Wed 31/12

00:00-05:00

Nonstop0h 00m

£619

LondonCastries

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

LHRSLU

London Heathrow

Fri 9/10

14:05-14:30

3 stops53h 25m

Castries George F. L. Charle

Wed 31/12

00:00-05:00

Nonstop0h 00m

£632

LondonCastries

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

LHRSLU

London Heathrow

Wed 17/2

10:35-19:00

1 stop12h 25m

Castries George F. L. Charle

Wed 3/3

15:45-08:30

1 stop12h 45m

£643

LondonCastries

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

LHRSLU

London Heathrow

Fri 8/1

10:35-19:00

1 stop12h 25m

Castries George F. L. Charle

Sun 17/1

12:35-05:50

1 stop13h 15m

£647

Fastest return journey

LondonCastries

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

LHRSLU

London Heathrow

Sat 3/10

09:35-19:00

1 stop14h 25m

Castries George F. L. Charle

Wed 31/12

00:00-05:00

Nonstop0h 00m

£662

LondonCastries

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

LHRSLU

London Heathrow

Sat 10/10

09:30-14:30

3 stops34h 00m

Castries George F. L. Charle

Wed 31/12

00:00-05:00

Nonstop0h 00m

£682

LondonCastries

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

LHRSLU

London Heathrow

Thu 29/10

13:25-15:15

1 stop29h 50m

Castries George F. L. Charle

Wed 11/11

15:45-08:30

1 stop12h 45m

£708

LondonCastries

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

LHRSLU

London Heathrow

Wed 14/10

20:50-17:05

3 stops25h 15m

Castries George F. L. Charle

Wed 31/12

00:00-05:00

Nonstop0h 00m

£712

LondonCastries

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

LHRSLU

London Heathrow

Sat 20/2

13:25-15:15

1 stop29h 50m

Castries George F. L. Charle

Sat 27/2

15:45-08:30

1 stop12h 45m

£718

Flights are sorted by cheapest return flights first.

Deals found on 22/9

Showing 1-10 of 13 resultsSorted by cheapest first

Best time to book a flight from Heathrow to Castries

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

LHR-SLU

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.

Related info for your journey

What airport do you fly into for flights to Castries from London Heathrow?
Castries George F. L. Charle (SLU), located 0.7 mi from the city center, is the airport you fly into when you book flights from London Heathrow to Castries. 0 airlines have flights to George F. L. Charle from London Heathrow on a regular basis. Booking flights from London Heathrow to Castries George F. L. Charle should not be difficult; the airport handles an average of 0 inbound flights from London Heathrow per day.
Can I find deals for flights from Heathrow to Castries that include hotel bookings?
Yes. In addition to deals on Heathrow to Castries flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Heathrow to Castries?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Castries.
Can I find deals for business class flights from Heathrow to Castries?
Yes. Cheapflights offers flight deals from Heathrow 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.

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

Yes! Cheapflights helps users easily find flights from Heathrow to Castries with no change fees.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Castries from Heathrow today and book when prices fit your budget.

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Cheap flights from London Heathrow Airport to Castries from £561

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 27/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Heathrow to Castries

Cheapest flights from Heathrow to CastriesExplore the most affordable flight options available from Heathrow to Castries. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 24 September 2026.

Explore the most affordable flight options available from Heathrow to Castries. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 24 September 2026.

Best flights from Heathrow to CastriesDiscover carefully curated flight deals from Heathrow to Castries that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 24 September 2026.

Discover carefully curated flight deals from Heathrow to Castries that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 24 September 2026.

Last-minute flights from Heathrow to CastriesDiscover last-minute flight deals from Heathrow to Castries. Data last updated 24 September 2026 and is based on user searches.

Discover last-minute flight deals from Heathrow to Castries. Data last updated 24 September 2026 and is based on user searches.

One-way flights from Heathrow to CastriesSearch for one-way flight options from Heathrow to Castries. Find affordable one-way fares based on user searches. Data last updated 24 September 2026.

Search for one-way flight options from Heathrow to Castries. Find affordable one-way fares based on user searches. Data last updated 24 September 2026.

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

Best time to book a flight from Heathrow to Castries

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

Related info for your journey

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

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

How can I find direct flights from Heathrow to Castries?

Can I find deals for business class flights from Heathrow 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 Heathrow to Castries

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

Other flights to Castries

Explore flights to Castries departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 24 September 2026.

Complete your trip

Complete your trip to Castries by adding a car hire and/or hotel booking to your travel itinerary.

Search flights from Heathrow to Castries by cabin class

Find flights from Heathrow to Castries, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Heathrow and Castries flights

Browse other Heathrow and Castries flight options. Last updated on 24 September 2026.

Other flights from Heathrow

Browse through other flights departing from Heathrow. Flights are based on user searches made on Cheapflights and were last updated on 24 September 2026.

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

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

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

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

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Cheapest flights from Heathrow to Castries
Explore the most affordable flight options available from Heathrow to Castries. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 24 September 2026.

Best flights from Heathrow to Castries
Discover carefully curated flight deals from Heathrow to Castries that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 24 September 2026.

Last-minute flights from Heathrow to Castries
Discover last-minute flight deals from Heathrow to Castries. Data last updated 24 September 2026 and is based on user searches.

One-way flights from Heathrow to Castries
Search for one-way flight options from Heathrow to Castries. Find affordable one-way fares based on user searches. Data last updated 24 September 2026.