AirHint found the following cheapest return flights from Seattle (SEA) to Hahn (HHN) in December 2025 (see full year).

Return flights

04 Dec - 14 Dec	WestJet
31 Dec - 24 Jan	Icelandair
15 Dec - 10 Jan	Hawaiian Airlines
17 Dec - 10 Jan	Hawaiian Airlines
02 Dec - 06 Dec	Alaska Airlines
17 Dec - 08 Jan	Hawaiian Airlines
31 Dec - 07 Jan	Icelandair
24 Dec - 17 Jan	Alaska Airlines
04 Dec - 27 Dec	WestJet
22 Dec - 17 Jan	Alaska Airlines
01 Dec - 27 Dec	Icelandair
20 Dec - 10 Jan	WestJet
19 Dec - 10 Jan	Frontier Airlines
11 Dec - 03 Jan	Icelandair
22 Dec - 29 Dec	Alaska Airlines
19 Dec - 27 Dec	Alaska Airlines
21 Dec - 28 Dec	Air Canada

Also check the deals for one-way flights from Seattle to Hahn 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 Seattle to Hahn in December from $780

Return flights