Cheapest return flights from Cancun to Castries in April from $930

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

Return flights

17 Apr - 01 May WestJet

Also check the deals for one-way flights from Cancun 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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