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

Return flights

17 Jan - 18 Jan	KLM
09 Jan - 11 Jan	KLM
14 Jan - 18 Jan	KLM
23 Jan - 25 Jan	KLM
05 Jan - 19 Jan	KLM
10 Jan - 11 Jan	KLM
12 Jan - 16 Jan	Iberia
27 Jan - 30 Jan	Iberia
16 Jan - 18 Jan	KLM
28 Jan - 30 Jan	Iberia
30 Jan - 06 Feb	Iberia
28 Jan - 04 Feb	Iberia
30 Jan - 02 Feb	Luxair
08 Jan - 05 Feb	KLM
29 Jan - 01 Feb	Luxair
31 Jan - 01 Feb	KLM

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

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 January from 193€

Return flights