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

Return flights

24 Apr - 27 Apr	Iberia
20 Apr - 24 Apr	Iberia
21 Apr - 22 May	TAP
25 Apr - 29 Apr	Iberia
07 Apr - 14 Apr	Iberia
17 Apr - 06 May	TAP
25 Apr - 30 Apr	Iberia
18 Apr - 20 Apr	Iberia
09 Apr - 23 Apr	TAP
26 Apr - 10 May	TAP
23 Apr - 27 Apr	Iberia
22 Apr - 25 Apr	Iberia
21 Apr - 25 Apr	Iberia
21 Apr - 02 May	TAP
24 Apr - 03 May	TAP
26 Apr - 01 May	TAP
27 Apr - 02 May	TAP
28 Apr - 03 May	TAP
27 Apr - 01 May	TAP

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 168€

Return flights