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

Return flights

13 Apr - 16 Apr	SWISS
10 Apr - 13 Apr	Luxair
10 Apr - 15 Apr	Luxair
10 Apr - 16 Apr	Luxair
16 Apr - 23 Apr	Luxair
23 Apr - 27 Apr	Luxair
10 Apr - 12 Apr	SWISS
03 Apr - 09 Apr	Luxair
09 Apr - 12 Apr	SWISS
17 Apr - 19 Apr	Luxair
30 Apr - 04 May	Luxair
29 Apr - 03 May	Luxair
30 Apr - 03 May	Luxair

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

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 April from 238€

Return flights