Cheapest return flights from London to Castries in April from $1890

AirHint found the following cheapest return flights from London (LCY) to Castries (SLU) in April 2026 (see full year).

Return flights

08 Apr - 15 Apr Delta
08 Apr - 16 Apr Delta
05 Apr - 16 Apr KLM
05 Apr - 15 Apr KLM
05 Apr - 14 Apr KLM
05 Apr - 13 Apr KLM
05 Apr - 19 Apr KLM
05 Apr - 20 Apr KLM
03 Apr - 15 Apr Delta
01 Apr - 06 Apr Delta
19 Apr - 02 May KLM
12 Apr - 23 May KLM
30 Apr - 11 May Delta
26 Apr - 25 May Delta

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

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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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