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

Return flights

11 May - 16 May	TAP	direct
12 May - 16 May	TAP	direct
06 May - 13 May	TAP	direct
09 May - 09 May	TAP	direct
05 May - 13 May	TAP	direct
09 May - 13 May	TAP	direct
04 May - 13 May	TAP	direct
20 May - 27 May	TAP	direct
16 May - 20 May	Vueling Airlines
09 May - 16 May	TAP	direct
27 May - 03 Jun	TAP	direct
30 May - 03 Jun	TAP	direct
26 May - 01 Jun	TAP	direct
19 May - 09 Jun	Vueling Airlines
25 May - 10 Jun	Lufthansa
31 May - 05 Jun	TAP	direct
31 May - 04 Jun	TAP	direct
19 May - 05 Jun	Vueling Airlines
19 May - 08 Jun	Vueling Airlines
31 May - 06 Jun	TAP	direct

Also check the deals for one-way flights from London to Lisbon in May.

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 May from 155€

Return flights