Cheapest return flights from London to Porto in August from $191

Best time to book flights for London (LHR) to Porto (OPO) flights at AirHint

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

Return flights

25 Aug - 11 Sep Vueling Airlines
25 Aug - 12 Sep Vueling Airlines
27 Aug - 11 Sep Vueling Airlines
28 Aug - 11 Sep Vueling Airlines
27 Aug - 12 Sep Vueling Airlines
27 Aug - 16 Sep Vueling Airlines
28 Aug - 12 Sep Vueling Airlines
28 Aug - 17 Sep Vueling Airlines
28 Aug - 16 Sep Vueling Airlines
31 Aug - 11 Sep Vueling Airlines
07 Aug - 08 Aug Iberia
05 Aug - 13 Aug TAP
13 Aug - 15 Aug TAP
07 Aug - 13 Aug TAP
01 Aug - 05 Aug Vueling Airlines
12 Aug - 19 Aug TAP
06 Aug - 13 Aug British Airways
05 Aug - 06 Aug Vueling Airlines
15 Aug - 15 Aug TAP
14 Aug - 21 Aug TAP

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

Skyscanner

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 Porto

Cheap car rent in Porto