AirHint found the following cheapest return flights from Philadelphia (PHL) to Colombo (CMB) in October 2025 (see full year).

Return flights

02 Oct - 10 Oct	Qatar Airways
06 Oct - 13 Oct	Qatar Airways
07 Oct - 14 Oct	Qatar Airways
07 Oct - 21 Oct	Qatar Airways
14 Oct - 28 Oct	Qatar Airways
20 Oct - 28 Oct	Qatar Airways
07 Oct - 28 Oct	Qatar Airways
06 Oct - 21 Oct	Qatar Airways
06 Oct - 28 Oct	Qatar Airways
21 Oct - 04 Nov	Qatar Airways
22 Oct - 05 Nov	Qatar Airways
27 Oct - 06 Nov	Qatar Airways
21 Oct - 11 Nov	Qatar Airways
28 Oct - 18 Nov	Qatar Airways
29 Oct - 19 Nov	Qatar Airways
14 Oct - 11 Nov	Qatar Airways
21 Oct - 10 Nov	Qatar Airways
07 Oct - 03 Nov	Qatar Airways
07 Oct - 05 Nov	Qatar Airways
07 Oct - 24 Oct	Qatar Airways

Also check the deals for one-way flights from Philadelphia to Colombo in October.

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 Philadelphia to Colombo in October from 777€

Return flights