Cheapest return flights from London to San Jose in September from $733

Best time to book flights for London (LON) to San Jose (SJO) flights at AirHint

AirHint found the following cheapest return flights from London (LON) to San Jose (SJO) in September 2025 (see full year).

Return flights

10 Sep - 18 Sep Air France
04 Sep - 18 Sep Air France
17 Sep - 24 Sep Air France
10 Sep - 30 Sep Air France
10 Sep - 23 Sep Air France
11 Sep - 23 Sep Air France
16 Sep - 27 Sep Air France
09 Sep - 23 Sep Air France
09 Sep - 16 Sep Air France
25 Sep - 02 Oct SWISS
23 Sep - 07 Oct SWISS
18 Sep - 02 Oct Air Canada
20 Sep - 11 Oct Air Canada
03 Sep - 17 Sep Air France
30 Sep - 14 Oct Lufthansa
30 Sep - 11 Oct United
29 Sep - 12 Oct United
27 Sep - 07 Oct KLM

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

Skyscanner

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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