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

Return flights

24 Apr - 27 Apr	Luxair
15 Apr - 21 Apr	Luxair
24 Apr - 01 May	Luxair
17 Apr - 23 Apr	Luxair
25 Apr - 27 Apr	Luxair
04 Apr - 08 Apr	KLM
13 Apr - 20 Apr	Luxair
13 Apr - 17 Apr	Luxair
25 Apr - 05 May	Luxair
25 Apr - 01 May	Luxair
22 Apr - 28 Apr	Luxair
01 Apr - 08 Apr	KLM
01 Apr - 07 Apr	KLM
29 Apr - 05 May	Luxair
24 Apr - 03 May	Luxair
26 Apr - 01 May	Luxair
30 Apr - 04 May	Luxair
30 Apr - 05 May	Luxair
27 Apr - 03 May	Luxair
28 Apr - 04 May	KLM

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 $323

Return flights