AirHint found the following cheapest return flights from Washington (IAD) to Rome (FCO) in October 2025 (see full year).

Return flights

07 Oct - 15 Oct	TAP
14 Oct - 25 Oct	Icelandair
02 Oct - 20 Oct	TAP
15 Oct - 29 Oct	TAP
02 Oct - 16 Oct	TAP
16 Oct - 23 Oct	TAP
02 Oct - 13 Oct	TAP
17 Oct - 24 Oct	TAP
09 Oct - 19 Oct	TAP
16 Oct - 20 Oct	TAP
31 Oct - 11 Nov	Aer Lingus
18 Oct - 01 Nov	Air Canada

Also check the deals for one-way flights from Washington to Rome 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 Washington to Rome in October from $410

Return flights