RyanairDepart10:50
Thu 12 NovSTN → UVF
16h 07m · 2 stops
£470one way, per person
View deal
- Cheapest fare
- £470
- Cheapest month
- November
- Direct flights
- Not recently
- Quickest trip
- 14h 45m
Ryanair · Thu 12 Nov
from £470
Usually 1+ stop
6,800 km
Get a price alert
We'll email you when London → Castries drops to your price. It's free, and you can stop any time.
Today's cheapest fare is £470. We'll send one email to confirm. See our privacy policy.
Cheapest month to fly from London to Castries
Lowest one-way fare per person in each month. Choose a month to see every date.
Cheapest dates in November 2026
The lowest fares we've seen for each day, cheapest first.
See every date in November 2026 →
Plan the rest of your trip to Castries
Where to stay, what to do and getting around, from our travel partners.
About flights from London to Castries
London (LON) and Castries (SLU) are about 6,800 km apart. We haven't seen direct fares on this route recently, so expect at least one stop; the quickest journey we've seen takes about 14h 45m. Over the next few months, one-way fares start from £470, and November 2026 is currently the cheapest month to fly.
These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.
Frequently asked questions
How much is a flight from London to Castries?
The cheapest one-way fare we've seen recently is £470 with Ryanair, departing Thursday, 12 November 2026. Over the coming months, the lowest fare in each month ranges from £470 to £840.
What is the cheapest month to fly from London to Castries?
November 2026 currently has the lowest fares, from £470 one way.
Are there direct flights from London to Castries?
We haven't seen direct fares recently, so most journeys include at least one stop.
How long is the flight from London to Castries?
The quickest journey we've seen takes about 14h 45m. London and Castries are around 6,800 km apart.
Which airlines fly from London to Castries?
Recent fares on this route were with Ryanair, Icelandair, TAP Air Portugal and Vueling.
More cheap flights from London
- London to Tashkentfrom £229
- London to Moscowfrom £135
- London to Bishkekfrom £134
- London to Samarkandfrom £137
- London to Istanbulfrom £67
- London to Shymkentfrom £143
- London to Dusseldorffrom £52
- London to Saint Petersburgfrom £130
- London to Dushanbefrom £221
- London to Oshfrom £174
- London to Berlinfrom £37
- London to Madridfrom £22