AirHint found the following cheapest return flights from Lisbon (LIS) to Colombo (CMB) in September 2025 (see full year).

Return flights

25 Sep - 07 Oct	Ryanair
26 Sep - 10 Oct	SkyUp Malta
12 Sep - 28 Sep	SkyUp Malta
12 Sep - 18 Sep	SkyUp Malta
01 Sep - 17 Sep	Wizz Air
22 Sep - 30 Sep	Wizz Air
12 Sep - 27 Sep	SkyUp Malta
17 Sep - 11 Oct	Wizz Air
16 Sep - 08 Oct	Ryanair
16 Sep - 26 Sep	Ryanair
01 Sep - 14 Sep	Fly One
05 Sep - 20 Sep	SkyUp Malta
19 Sep - 11 Oct	Wizz Air
01 Sep - 13 Sep	Fly One
04 Sep - 14 Sep	Etihad Airways

Also check the deals for one-way flights from Lisbon to Colombo in September.

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 Lisbon to Colombo in September from 600€

Return flights