AirHint found the following cheapest one-way flights from Washington (IAD) to Rome (FCO) in December 2025 (see full year).
One-Way flights
| 02 Dec | TAP | ||
| 07 Dec | TAP | ||
| 06 Dec | TAP | ||
| 03 Dec | TAP | ||
| 12 Dec | Frontier Airlines | ||
| 10 Dec | Frontier Airlines | ||
| 15 Dec | Frontier Airlines | ||
| 05 Dec | Royal Air Maroc | ||
| 29 Dec | Frontier Airlines | ||
| 23 Dec | Frontier Airlines |
Also check the deals for return flights from Washington to Rome in December.
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