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

Return flights

11 Apr - 14 Apr	Iberia
30 Apr - 14 May	TAP
16 Apr - 18 Apr	TAP
09 Apr - 14 Apr	TAP
16 Apr - 19 Apr	Iberia
14 Apr - 18 Apr	SWISS
14 Apr - 16 Apr	SWISS
01 Apr - 05 Apr	TAP
05 Apr - 08 Apr	TAP
19 Apr - 23 Apr	TAP
13 Apr - 16 Apr	TAP
30 Apr - 03 May	TAP
25 Apr - 03 May	TAP
25 Apr - 31 May	TAP
28 Apr - 05 May	British Airways

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 $179

Return flights