AirHint found the following cheapest return flights from Duesseldorf (DUS) to San Jose (SJO) in December 2025 (see full year).

Return flights

02 Dec - 10 Dec	SWISS
08 Dec - 27 Dec	KLM
08 Dec - 23 Dec	KLM
15 Dec - 20 Jan	Vueling Airlines
13 Dec - 09 Jan	Vueling Airlines
01 Dec - 22 Dec	Lufthansa
02 Dec - 22 Dec	Air France
17 Dec - 14 Jan	Vueling Airlines
17 Dec - 15 Jan	Vueling Airlines
24 Dec - 14 Jan	Eurowings
28 Dec - 11 Jan	Ryanair
29 Dec - 11 Jan	easyJet
06 Dec - 20 Dec	Turkish Airlines
28 Dec - 12 Jan	Eurowings
25 Dec - 14 Jan	KLM
29 Dec - 13 Jan	easyJet
20 Dec - 29 Dec	Lufthansa
20 Dec - 28 Dec	Eurowings

Also check the deals for one-way flights from Duesseldorf 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 Duesseldorf to San Jose in December from $648

Return flights