AirHint found the following cheapest return flights from London (LON) to Porto (OPO) in August 2026 (see full year).

Return flights

30 Aug - 17 Sep	Ryanair	direct
30 Aug - 15 Sep	Ryanair
30 Aug - 16 Sep	Ryanair
27 Aug - 15 Sep	Ryanair
27 Aug - 16 Sep	Ryanair
30 Aug - 11 Sep	Ryanair
29 Aug - 17 Sep	Ryanair	direct
29 Aug - 15 Sep	Ryanair
29 Aug - 16 Sep	Ryanair
26 Aug - 12 Sep	easyJet	direct
04 Aug - 05 Aug	Wizz Air UK
04 Aug - 05 Aug	TAP	direct
05 Aug - 06 Aug	easyJet	direct
02 Aug - 05 Aug	TAP	direct
03 Aug - 05 Aug	easyJet	direct
06 Aug - 07 Aug	easyJet	direct
05 Aug - 07 Aug	easyJet	direct
11 Aug - 13 Aug	easyJet	direct
04 Aug - 11 Aug	Wizz Air UK
27 Aug - 31 Aug	Ryanair

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

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Cheapest return flights from London to Porto in August from 98€

Return flights