$81 Cheap United flights Chicago (ORD) to Washington (IAD)

You’ll discover cheap return United Airlines flights from $161 from ORD to IAD by organizing your results from “Price (lowest to highest)” on Expedia. Or look for bargains from $81 for a one-way journey.**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.

United Airlines flights to Washington are often more affordable in the off-peak months of January and February. Whether you need a one-way or a return ticket, you could score a better deal then.

Look for cheap United Airlines flights from O’Hare Intl. Airport (ORD) to Washington Dulles Intl. Airport (IAD) one to three months prior to your departure date. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. Regardless of fare class and itinerary, the best day of the week to book a domestic flight is generally Sunday and the most expensive tends to be Monday. Passengers who book on a Sunday can save 6% on average compared to those who book their travel on a Monday.**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.

Book a seat on one of United Airlines’s 28 weekly direct flights from O’Hare Intl. Airport (ORD) to Washington Dulles Intl. Airport (IAD). To see your options, enter your dates, origin and destination and hit search. Then select the “Nonstop” and “Airline” filters.

Leave O’Hare Intl. Airport (ORD) for Washington Dulles Intl. Airport (IAD) on a nonstop United Airlines flight, and you’ll be in the sky for approximately 1h 54m.

United Airlines operates the most flights from O’Hare Intl. Airport (ORD) to Washington Dulles Intl. Airport (IAD) on Monday. With up to 4 daily departures, you’ll get the most options and flexibility on this day.

The earliest United Airlines flight from ORD to IAD departs at 8:50AM UTC-6, touching down at 11:48AM UTC-5. If you prefer to jet off later, the last United Airlines flight leaves ORD at 6:08PM UTC-6 and touches down at IAD at 9:01PM UTC-5. Flying before noon is often a good idea as morning flights are less likely to be 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.

Washington Dulles Intl. Airport (IAD) is the main Washington hub for United Airlines flights from O’Hare Intl. Airport (ORD). Ronald Reagan Washington National Airport (DCA) and Baltimore Washington Intl. Thurgood Marshall Airport (BWI) are other options. When planning your getaway with Expedia, check the “All Airports” option for your destination to see everything that’s available.

Offering a rewarding loyalty program, United Airlines is a favorite of many passengers journeying from ORD to IAD. Plus, as 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.

For the O’Hare Intl. Airport (ORD) to Washington Dulles Intl. Airport (IAD) route, United Airlines typically uses Boeing 737-800 and Airbus A320 planes. Keep in mind that last-minute changes are possible for operational purposes, meaning your flight could be on a different aircraft.

Typically, you can reschedule or cancel your flight, although there may be additional fees if you made your booking over 24 hours ago. Want to keep your options open? Use our “Changes included” and “No cancel fee” filters to find flights that won’t penalize you if you have to revise your plans. To modify your booking, head to “Trips,” select your flight and click on “Manage Booking” for more information.