AirHint found the following cheapest return flights from Rijeka (RJK) to London (STN) in September 2026 (see full year).

Return flights

16 Sep - 19 Sep	Ryanair	direct
12 Sep - 19 Sep	Ryanair	direct
08 Sep - 15 Sep	Ryanair
02 Sep - 09 Sep	Ryanair	direct
14 Sep - 21 Sep	Ryanair
04 Sep - 09 Sep	Ryanair
02 Sep - 19 Sep	Ryanair	direct
11 Sep - 18 Sep	Ryanair
02 Sep - 05 Sep	Ryanair	direct
01 Sep - 08 Sep	Wizz Air
25 Sep - 02 Oct	Croatia Airlines
24 Sep - 01 Oct	Ryanair
30 Sep - 07 Oct	Ryanair
28 Sep - 05 Oct	Ryanair
26 Sep - 03 Oct	Eurowings
27 Sep - 04 Oct	Lufthansa

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 $118

Return flights