AirHint found the following cheapest return flights from Delhi (DEL) to Colombo (CMB) in August 2025 (see full year).

Return flights

20 Aug - 27 Aug	Air India
22 Aug - 29 Aug	Air India
22 Aug - 25 Aug	Air India
28 Aug - 30 Aug	Air India
28 Aug - 02 Sep	Air India
29 Aug - 07 Sep	Air India
17 Aug - 20 Aug	Air India
20 Aug - 06 Sep	Air India
22 Aug - 18 Sep	Air India
20 Aug - 23 Aug	Air India
22 Aug - 28 Aug	Air India
21 Aug - 24 Aug	Air India
26 Aug - 04 Sep	SriLankan Airlines	direct
28 Aug - 03 Sep	SriLankan Airlines	direct
28 Aug - 29 Sep	SriLankan Airlines	direct
25 Aug - 29 Aug	IndiGo
23 Aug - 27 Aug	IndiGo
18 Aug - 02 Sep	Air India
30 Aug - 03 Sep	Air India
29 Aug - 04 Sep	Air India

Also check the deals for one-way flights from Delhi to Colombo 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 Delhi to Colombo in August from 202€

Return flights