Cheapest return flights from London to San Juan in April from $1046

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

Return flights

30 Apr - 07 May SWISS
29 Apr - 06 May SWISS
14 Apr - 28 Apr ITA Airways
13 Apr - 19 Apr SWISS
02 Apr - 08 Apr SWISS
23 Apr - 01 May Aer Lingus
01 Apr - 15 Apr SWISS
14 Apr - 20 Apr Aer Lingus
24 Apr - 02 May Aer Lingus
16 Apr - 02 May Aer Lingus
07 Apr - 23 Apr Iberia
16 Apr - 27 Apr Aer Lingus
17 Apr - 19 Apr Aer Lingus
24 Apr - 04 May Aer Lingus
17 Apr - 01 May Aer Lingus
06 Apr - 25 Apr SWISS
16 Apr - 26 Apr Iberia
24 Apr - 03 May Aer Lingus
29 Apr - 09 May Aer Lingus
23 Apr - 02 May KLM

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

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