Cheapest return flights from London to San Juan in September from $743

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

Return flights

06 Sep - 14 Sep Norse Atlantic Airways (UK)
14 Sep - 27 Sep Norse Atlantic Airways (UK)
10 Sep - 24 Sep Norse Atlantic Airways (UK)
18 Sep - 27 Sep Norse Atlantic Airways (UK)
07 Sep - 14 Sep Wizz Air UK
08 Sep - 15 Sep Ryanair
30 Sep - 14 Oct Norse Atlantic Airways (UK)
11 Sep - 20 Sep Norse Atlantic Airways (UK)
07 Sep - 20 Sep Wizz Air UK
11 Sep - 19 Sep Ryanair
11 Sep - 25 Sep Ryanair

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

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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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