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

Return flights

15 Dec - 10 Jan	Spirit Airlines
24 Dec - 11 Jan	jetBlue
17 Dec - 10 Jan	Spirit Airlines
22 Dec - 29 Dec	Frontier Airlines
24 Dec - 31 Dec	Spirit Airlines
23 Dec - 29 Dec	Frontier Airlines
10 Dec - 03 Jan	Frontier Airlines
28 Dec - 04 Jan	Spirit Airlines
19 Dec - 29 Dec	Spirit Airlines
22 Dec - 31 Dec	Frontier Airlines
13 Dec - 03 Jan	Spirit Airlines
14 Dec - 03 Jan	Frontier Airlines
18 Dec - 05 Jan	Frontier Airlines
19 Dec - 26 Dec	Spirit Airlines

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

Cheap car rent in Prague

Cheapest return flights from Austin to Prague in December from 660€

Return flights