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

Return flights

06 Aug - 26 Aug	TAP	direct
21 Aug - 04 Sep	TAP	direct
05 Aug - 12 Aug	TAP	direct
15 Aug - 19 Aug	TAP	direct
03 Aug - 07 Aug	TAP	direct
19 Aug - 26 Aug	TAP	direct
03 Aug - 05 Aug	TAP	direct
03 Aug - 06 Aug	TAP	direct
07 Aug - 19 Aug	TAP	direct
10 Aug - 14 Aug	TAP	direct
06 Aug - 27 Aug	TAP	direct
16 Aug - 12 Sep	TAP	direct
28 Aug - 03 Sep	TAP	direct
25 Aug - 11 Sep	TAP	direct
29 Aug - 03 Sep	TAP	direct
29 Aug - 07 Sep	TAP
29 Aug - 01 Sep	Iberia
25 Aug - 01 Sep	TAP
31 Aug - 07 Sep	TAP
26 Aug - 01 Sep	TAP

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

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 August from 162€

Return flights