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

Return flights

08 Apr - 15 Apr	SWISS
08 Apr - 22 Apr	SWISS
15 Apr - 22 Apr	SWISS
29 Apr - 05 May	SWISS
21 Apr - 30 Apr	SWISS
22 Apr - 30 Apr	SWISS
16 Apr - 22 Apr	SWISS
29 Apr - 02 May	SWISS
28 Apr - 02 May	SWISS
22 Apr - 27 Apr	SWISS
21 Apr - 24 Apr	SWISS
10 Apr - 14 Apr	ITA Airways
28 Apr - 01 May	SWISS
15 Apr - 30 Apr	SWISS
27 Apr - 01 May	Lufthansa
29 Apr - 03 May	SWISS
30 Apr - 03 May	Luxair
30 Apr - 05 May	SWISS

Also check the deals for one-way flights from London to Lisbon 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 Lisbon in April from 222€

Return flights