Cheapest return DUB–SJO flights, September

AirHint found the following cheapest return flights from Dublin (DUB) to San Jose (SJO) in September 2026 (see full year).

Return flights

07 Sep - 20 Sep jetBlue
05 Sep - 27 Sep Air Canada
10 Sep - 30 Sep Air Canada
04 Sep - 12 Sep United
11 Sep - 27 Sep United
03 Sep - 12 Sep United
16 Sep - 16 Oct United
01 Sep - 07 Sep Air France
21 Sep - 21 Sep Air France

Also check the deals for one-way flights from Dublin to San Jose 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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