AirHint found the following cheapest return flights from Riga (RIX) to Bourgas (BOJ) in September 2025 (see full year).

Return flights

25 Sep - 07 Oct	Ryanair
30 Sep - 07 Oct	Ryanair
04 Sep - 11 Sep	Norwegian Air Sweden AOC
01 Sep - 09 Sep	Norwegian Air Sweden AOC
08 Sep - 15 Sep	Ryanair
16 Sep - 23 Sep	Ryanair
02 Sep - 09 Sep	Ryanair
03 Sep - 17 Sep	Ryanair
23 Sep - 30 Sep	Ryanair
03 Sep - 10 Sep	Ryanair
10 Sep - 13 Sep	Ryanair
09 Sep - 22 Sep	Ryanair

Also check the deals for one-way flights from Riga to Bourgas 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 Riga to Bourgas in September from 187€

Return flights