Cheapest return flights from London to San Juan in December from $1318

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

Return flights

02 Dec - 15 Dec British Airways
21 Dec - 04 Jan ITA Airways
04 Dec - 08 Dec British Airways
04 Dec - 15 Dec British Airways
10 Dec - 15 Dec British Airways
28 Dec - 04 Jan KLM
23 Dec - 06 Jan ITA Airways
16 Dec - 30 Dec British Airways
17 Dec - 31 Dec British Airways
27 Dec - 03 Jan KLM
31 Dec - 07 Jan Aer Lingus
18 Dec - 29 Dec ITA Airways
18 Dec - 26 Dec ITA Airways

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

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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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