AirHint found the following cheapest return flights from Graz (GRZ) to Hamburg (HAM) in December 2025 (see full year).

Return flights

07 Dec - 12 Dec	Eurowings	direct
12 Dec - 14 Dec	Eurowings	direct
21 Dec - 04 Jan	Eurowings	direct
26 Dec - 28 Dec	Eurowings	direct
04 Dec - 07 Dec	Austrian Airlines
03 Dec - 06 Dec	Lufthansa
17 Dec - 21 Dec	Lufthansa
16 Dec - 21 Dec	Lufthansa
14 Dec - 21 Dec	Lufthansa
10 Dec - 15 Dec	Lufthansa
05 Dec - 08 Dec	Austrian Airlines
30 Dec - 03 Jan	Lufthansa
30 Dec - 01 Jan	Lufthansa

Also check the deals for one-way flights from Graz to Hamburg 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 Graz to Hamburg in December from $173

Return flights