$1,521 Cheap United flights Rome (FCO) to Washington (IAD)

View $1,521 flight on Tue, Aug 19, 2025Opens in a new window

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$1,521 Cheap United flights Rome (FCO) to Washington (IAD)

Prices were available within the past 7 days and start at $1,521 for one-way flights and $654 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Thu, Nov 20 - Thu, Nov 27
FCO
Rome
IAD
Washington
$654 Roundtrip, found 4 hours ago
$654
Roundtrip
found 4 hours ago
Select United flight, departing Thu, Nov 20 from Rome to Washington, returning Thu, Nov 27, priced at $654 found 4 hours ago
Flights from Rome (FCO) to Washington (IAD)
Origin airport
Fiumicino - Leonardo da Vinci Intl.
Destination airport
Washington Dulles Intl.
Airlines serving
Aer Lingus, Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, EGYPTAIR, ITA Airways, Iberia, Icelandair, KLM, Lufthansa, Royal Air Maroc, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United
Popular airline
British Airways
Distance
4493 mi
Average flight time
3 hours 58 mins

Frequently asked questions

How much is a United Airlines flight from Fiumicino - Leonardo da Vinci Intl. Airport (FCO) to Washington Dulles Intl. Airport (IAD)?
You can find affordable round-trip United Airlines flights from $654 from FCO to IAD by sorting your results from "Price (lowest to highest)" on Expedia. Or look for bargains from $1,521 for a one-way trip.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from FCO to IAD with United Airlines?
Search for return or one-way flights to Washington in January or February. You could find cheaper fares with United Airlines during these off-peak travel months.
What is the cheapest time to book flights from Fiumicino - Leonardo da Vinci Intl. Airport (FCO) to Washington Dulles Intl. Airport (IAD) with United Airlines?
To grab cheap flights from FCO to IAD with United Airlines, begin your search about one month before your intended departure. You can save 17% when you book your international tickets 18 to 29 days ahead instead of booking four to five months in advance. Another good tip? Booking on Sunday can lead to average savings of 17% compared to Friday (the most expensive day).**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does United Airlines fly nonstop from Fiumicino - Leonardo da Vinci Intl. Airport (FCO) to Washington Dulles Intl. Airport (IAD)?
To find out if there's a direct journey from FCO to IAD with United Airlines or other carriers, select the "Nonstop" filter when looking for flights.
What is the earliest United Airlines flight from FCO to IAD?
Find United Airlines's earliest flights from FCO to IAD by using the "Morning" and "Early Morning" filters. Not only will you get to where you're going sooner, early departures also have a 20% less chance of being canceled.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does United Airlines fly into in Washington?
Washington Dulles Intl. Airport (IAD) is the primary Washington hub for United Airlines flights from Fiumicino - Leonardo da Vinci Intl. Airport (FCO).
Why fly with United Airlines from FCO to IAD?
With a rewarding loyalty program, United Airlines is a favorite of many travelers flying from FCO to IAD. Plus, if you're a United Mileage Plus and One Key™ member booking through Expedia, you can earn OneKeyCash™* on eligible flights along with your airline miles.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
What type of plane does United Airlines fly from Fiumicino - Leonardo da Vinci Intl. Airport (FCO) to Washington Dulles Intl. Airport (IAD)?
United Airlines typically uses Airbus A350-1000 planes for journeys from Fiumicino - Leonardo da Vinci Intl. Airport (FCO) to Washington Dulles Intl. Airport (IAD). Keep in mind that aircraft type can vary depending on operational requirements, so the plane you'll be on might be different on your travel date.
Can I change or cancel my United Airlines flight from Fiumicino - Leonardo da Vinci Intl. Airport (FCO) to Washington Dulles Intl. Airport (IAD)?
Changes are often free within 24 hours of booking, but your airline may charge you after that time. For more information about modifying your reservation, head to your "Trips," select your flight and click on "Manage Booking." If you'd like the flexibility to change your plans without additional charges, check the "Changes included" and "No cancel fee" filters when organizing your next break.

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