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

Return flights

26 Sep - 11 Oct	TAP
25 Sep - 25 Oct	easyJet
25 Sep - 20 Oct	easyJet
16 Sep - 03 Oct	Pegasus Airlines
20 Sep - 07 Oct	easyJet
10 Sep - 05 Oct	Pegasus Airlines
21 Sep - 06 Oct	Ryanair
08 Sep - 08 Oct	Pegasus Airlines
13 Sep - 21 Sep	Pegasus Airlines
11 Sep - 24 Sep	Pegasus Airlines
18 Sep - 25 Sep	easyJet
27 Sep - 12 Oct	TAP
06 Sep - 03 Oct	Pegasus Airlines
10 Sep - 17 Sep	Pegasus Airlines

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.

Book a cheap hotel in Colombo

Cheap car rent in Colombo

Cheapest return flights from Lisbon to Colombo in September from $644

Return flights