AirHint found the following cheapest return flights from Riga (RIX) to Lisbon (LIS) in October 2025 (see full year).

Return flights

04 Oct - 07 Oct	Ryanair
14 Oct - 13 Nov	Ryanair
04 Oct - 08 Oct	Ryanair
13 Oct - 18 Oct	Ryanair
13 Oct - 17 Oct	Ryanair
01 Oct - 08 Oct	Ryanair
07 Oct - 14 Oct	Ryanair
12 Oct - 18 Oct	Norwegian Air Sweden AOC
01 Oct - 18 Oct	Ryanair
11 Oct - 18 Oct	Ryanair
06 Oct - 10 Oct	Ryanair
18 Oct - 15 Nov	Ryanair
30 Oct - 14 Nov	Ryanair
29 Oct - 02 Nov	Ryanair
28 Oct - 01 Nov	Ryanair
16 Oct - 13 Nov	Norwegian Air Sweden AOC
25 Oct - 03 Nov	Ryanair
18 Oct - 01 Nov	Ryanair
30 Oct - 01 Nov	Ryanair
25 Oct - 01 Nov	Ryanair

Also check the deals for one-way flights from Riga to Lisbon in October.

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 Lisbon in October from $188

Return flights