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

Return flights

14 Aug - 26 Sep	Air India
02 Aug - 23 Aug	Air India
02 Aug - 10 Aug	Air India
04 Aug - 15 Aug	Air India
02 Aug - 05 Aug	Air India
22 Aug - 28 Aug	Air India
25 Aug - 01 Sep	Air India
01 Aug - 05 Aug	Air India
02 Aug - 16 Aug	Air India
06 Aug - 22 Aug	Air India
08 Aug - 19 Aug	Air India
05 Aug - 10 Aug	Air India
22 Aug - 18 Sep	Air India
23 Aug - 01 Sep	Air India
27 Aug - 01 Sep	Air India
27 Aug - 05 Sep	Air India
29 Aug - 03 Sep	Air India
30 Aug - 06 Sep	Air India
29 Aug - 05 Sep	Air India
30 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 204€

Return flights