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

Return flights

28 Jul - 04 Aug	Ryanair
29 Jul - 11 Aug	Finnair
30 Jul - 06 Aug	Ryanair
30 Jul - 15 Aug	Ryanair
31 Jul - 10 Aug	Finnair
30 Jul - 07 Aug	Ryanair
31 Jul - 06 Aug	Finnair
31 Jul - 07 Aug	Finnair
31 Jul - 03 Aug	Finnair
31 Jul - 05 Aug	Ryanair
30 Jul - 31 Jul	Ryanair
28 Jul - 30 Jul	Ryanair
28 Jul - 31 Jul	Ryanair
27 Jul - 30 Jul	Ryanair
27 Jul - 31 Jul	Ryanair
27 Jul - 28 Jul	Ryanair

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

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 Lisbon

Cheap car rent in Lisbon

Cheapest return flights from Riga to Lisbon in July from 338€

Return flights