AirHint found the following cheapest return flights from Austin (AUS) to Duesseldorf (DUS) in December 2025 (see full year).
Return flights
| 01 Dec - 08 Dec | Air Canada | ||
| 17 Dec - 07 Jan | British Airways | ||
| 08 Dec - 30 Dec | Frontier Airlines | ||
| 15 Dec - 31 Dec | Frontier Airlines |
Also check the deals for one-way flights from Austin to Duesseldorf in December.
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