AirHint found the following cheapest return flights from Austin (AUS) to Brussels (BRU) in December 2025 (see full year).
Return flights
| 26 Dec - 17 Jan | Frontier Airlines | ||
| 07 Dec - 27 Dec | Spirit Airlines | ||
| 23 Dec - 07 Jan | Frontier Airlines | ||
| 09 Dec - 03 Jan | Spirit Airlines | ||
| 08 Dec - 03 Jan | Spirit Airlines | ||
| 10 Dec - 03 Jan | Spirit Airlines |
Also check the deals for one-way flights from Austin to Brussels in December.
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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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