AirHint found the following cheapest return flights from Washington (IAD) to Rome (FCO) in May 2026 (see full year).

Return flights

10 May - 17 May	Scandinavian Airlines
13 May - 27 May	Aer Lingus
15 May - 14 Jun	Icelandair
02 May - 16 May	Icelandair
02 May - 15 May	Scandinavian Airlines
13 May - 28 May	Aer Lingus
13 May - 29 May	Aer Lingus
19 May - 26 May	TAP
25 May - 10 Jun	TAP
15 May - 25 May	Icelandair
15 May - 24 May	Icelandair
09 May - 19 May	Icelandair
25 May - 08 Jun	TAP
25 May - 04 Jun	Aer Lingus
28 May - 11 Jun	TAP
22 May - 06 Jun	Icelandair
31 May - 28 Jun	TAP
11 May - 20 Jun	Aer Lingus
28 May - 13 Jun	Porter Airlines (Canada) Ltd
30 May - 22 Jun	Icelandair

Also check the deals for one-way flights from Washington to Rome in May.

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 May from 611€

Return flights