AirHint found the following cheapest return flights from London (STN) to Ostrava (OSR) in December 2025 (see full year).

Return flights

01 Dec - 06 Dec	Ryanair	direct
06 Dec - 13 Dec	Ryanair	direct
01 Dec - 13 Dec	Ryanair	direct
29 Dec - 17 Jan	Ryanair	direct
02 Dec - 06 Dec	Ryanair
15 Dec - 27 Dec	Ryanair	direct
15 Dec - 29 Dec	Ryanair	direct
29 Dec - 03 Jan	Ryanair	direct
29 Dec - 05 Jan	Ryanair	direct
15 Dec - 03 Jan	Ryanair	direct
22 Dec - 27 Dec	Ryanair	direct
22 Dec - 29 Dec	Ryanair	direct
20 Dec - 29 Dec	Ryanair	direct
22 Dec - 03 Jan	Ryanair	direct
22 Dec - 05 Jan	Ryanair	direct
20 Dec - 05 Jan	Ryanair	direct

Also check the deals for one-way flights from London to Ostrava 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 Ostrava

Cheap car rent in Ostrava

Cheapest return flights from London to Ostrava in December from 53€

Return flights