AirHint found the following cheapest return flights from Rijeka (RJK) to London (STN) in September 2025 (see full year).

Return flights

10 Sep - 27 Sep	Ryanair	direct
24 Sep - 27 Sep	Ryanair	direct
10 Sep - 17 Sep	Ryanair	direct
10 Sep - 24 Sep	Ryanair	direct
10 Sep - 20 Sep	Ryanair	direct
17 Sep - 27 Sep	Ryanair	direct
17 Sep - 24 Sep	Ryanair	direct
13 Sep - 27 Sep	Ryanair	direct
17 Sep - 20 Sep	Ryanair	direct
13 Sep - 17 Sep	Ryanair	direct
26 Sep - 03 Oct	Ryanair
27 Sep - 04 Oct	Ryanair
29 Sep - 06 Oct	Ryanair
24 Sep - 01 Oct	Ryanair
25 Sep - 02 Oct	Ryanair
28 Sep - 05 Oct	Ryanair
30 Sep - 07 Oct	Croatia Airlines

Also check the deals for one-way flights from Rijeka to London in September.

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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Cheapest return flights from Rijeka to London in September from $55

Return flights