AirHint found the following cheapest return flights from Austin (AUS) to Barcelona (BCN) in December 2025 (see full year).

Return flights

03 Dec - 10 Dec	United
08 Dec - 15 Dec	United
31 Dec - 08 Jan	jetBlue
31 Dec - 07 Jan	American Airlines
29 Dec - 05 Jan	Air Canada
29 Dec - 06 Jan	Air Canada
23 Dec - 31 Dec	Air Canada
23 Dec - 30 Dec	Air Canada
24 Dec - 31 Dec	Lufthansa
30 Dec - 07 Jan	United
28 Dec - 05 Jan	Air Canada
30 Dec - 06 Jan	Air Canada
25 Dec - 01 Jan	Lufthansa
13 Dec - 20 Dec	United
24 Dec - 01 Jan	British Airways
26 Dec - 02 Jan	British Airways
21 Dec - 29 Dec	Lufthansa
22 Dec - 30 Dec	Air Canada
21 Dec - 28 Dec	jetBlue
20 Dec - 28 Dec	jetBlue

Also check the deals for one-way flights from Austin to Barcelona 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.

Book a cheap hotel in Barcelona

Cheap car rent in Barcelona

Cheapest return flights from Austin to Barcelona in December from 409€

Return flights