Cheapest return flights from London to San Juan in May from $1165

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

Return flights

01 May - 10 May SWISS
05 May - 13 May Aer Lingus
05 May - 12 May Aer Lingus
05 May - 15 May Aer Lingus
04 May - 18 May Iberia
29 May - 11 Jun Iberia
29 May - 10 Jun Iberia
22 May - 31 May Aer Lingus
15 May - 25 May Iberia
05 May - 14 May British Airways
02 May - 09 May SWISS
12 May - 24 May British Airways
29 May - 06 Jun ITA Airways

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

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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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