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

Return flights

15 Sep - 28 Sep	SalamAir	direct
15 Sep - 27 Sep	SalamAir	direct
15 Sep - 22 Sep	SalamAir	direct
19 Sep - 29 Sep	SalamAir	direct
19 Sep - 30 Sep	SalamAir	direct
22 Sep - 30 Sep	SalamAir	direct
08 Sep - 23 Sep	SalamAir	direct
11 Sep - 12 Oct	SalamAir	direct
04 Sep - 19 Sep	Etihad Airways
22 Sep - 29 Sep	Etihad Airways
23 Sep - 30 Sep	Etihad Airways
29 Sep - 03 Oct	Etihad Airways
30 Sep - 04 Oct	Etihad Airways
18 Sep - 04 Oct	SalamAir
10 Sep - 10 Oct	Etihad Airways
09 Sep - 10 Oct	Etihad Airways
25 Sep - 11 Oct	flydubai

Also check the deals for one-way flights from Muscat 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 Muscat to Colombo in September from $259

Return flights