AirHint found the following cheapest return flights from Porto (OPO) to Tallinn (TLL) in August 2025 (see full year).

Return flights

29 Aug - 31 Aug	Norwegian
20 Aug - 26 Aug	Norwegian
07 Aug - 18 Aug	easyJet
13 Aug - 23 Aug	Ryanair
08 Aug - 18 Aug	easyJet
19 Aug - 31 Aug	Ryanair
15 Aug - 18 Aug	Ryanair
12 Aug - 18 Aug	easyJet
08 Aug - 13 Aug	easyJet
16 Aug - 18 Aug	Ryanair
29 Aug - 07 Sep	SWISS

Also check the deals for one-way flights from Porto to Tallinn in August.

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 Tallinn

Cheap car rent in Tallinn

Cheapest return flights from Porto to Tallinn in August from 274€

Return flights