AirHint found the following cheapest return flights from London (LCY) to Castries (SLU) in November 2025 (see full year).

Return flights

13 Nov - 27 Nov	Delta
08 Nov - 18 Nov	Delta
06 Nov - 13 Nov	Delta
15 Nov - 23 Nov	Delta
07 Nov - 18 Nov	Delta
20 Nov - 27 Nov	Delta
14 Nov - 23 Nov	Delta
17 Nov - 23 Nov	Delta
08 Nov - 19 Nov	Delta
08 Nov - 17 Nov	Delta
21 Nov - 07 Dec	Delta
30 Nov - 10 Dec	Delta
30 Nov - 14 Dec	Delta

Also check the deals for one-way flights from London to Castries in November.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from London to Castries in November from $1131

Return flights