AirHint found the following cheapest return flights from Frankfurt (FRA) to San Jose (SJO) in December 2026 (see full year).

Return flights

13 Dec - 21 Dec	Air Canada
03 Dec - 08 Dec	Air Canada
08 Dec - 23 Dec	Air Canada
12 Dec - 26 Dec	Air Canada
02 Dec - 13 Dec	KLM
01 Dec - 16 Dec	Air Canada
02 Dec - 24 Dec	Air Canada
05 Dec - 22 Dec	Air Canada
07 Dec - 24 Dec	Air Canada
05 Dec - 12 Dec	Air Canada
17 Dec - 01 Jan	Iberia
21 Dec - 01 Jan	Iberia
15 Dec - 01 Jan	Iberia
15 Dec - 02 Jan	Iberia
08 Dec - 02 Jan	SWISS
22 Dec - 02 Jan	Iberia
27 Dec - 03 Jan	Iberia
26 Dec - 02 Jan	Iberia
19 Dec - 02 Jan	Iberia
18 Dec - 02 Jan	Iberia

Also check the deals for one-way flights from Frankfurt to San Jose in December.

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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Cheapest return flights from Frankfurt to San Jose in December from 603€

Return flights