Popular airlines from Chicago O'Hare Intl. Airport (ORD) to Washington Dulles Intl. Airport (IAD)

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Cheap Flights from Chicago to Washington (ORD-IAD)

Prices were available within the past 7 days and start at $55 for one-way flights and $110 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Thu, Dec 11 - Sat, Dec 13
ORD
Chicago
IAD
Washington
$110 Roundtrip, found 9 hours ago
$110
Roundtrip
found 9 hours ago
Select Frontier Airlines flight, departing Thu, Dec 11 from Chicago to Washington, returning Sat, Dec 13, priced at $110 found 9 hours ago
Frontier Airlines
Mon, Nov 10 - Mon, Nov 17
ORD
Chicago
IAD
Washington
$120 Roundtrip, found 3 hours ago
$120
Roundtrip
found 3 hours ago
Select Frontier Airlines flight, departing Mon, Nov 10 from Chicago to Washington, returning Mon, Nov 17, priced at $120 found 3 hours ago
Frontier Airlines
Thu, Dec 11 - Sat, Dec 13
ORD
Chicago
IAD
Washington
$130 Roundtrip, found 9 hours ago
$130
Roundtrip
found 9 hours ago
Select Frontier Airlines flight, departing Thu, Dec 11 from Chicago to Washington, returning Sat, Dec 13, priced at $130 found 9 hours ago
United
Thu, Jan 8 - Fri, Jan 9
ORD
Chicago
IAD
Washington
$136 Roundtrip, found 4 days ago
$136
Roundtrip
found 4 days ago
Select United flight, departing Thu, Jan 8 from Chicago to Washington, returning Fri, Jan 9, priced at $136 found 4 days ago
Frontier Airlines
Sat, Dec 6 - Wed, Dec 17
ORD
Chicago
IAD
Washington
$137 Roundtrip, found 5 days ago
$137
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Sat, Dec 6 from Chicago to Washington, returning Wed, Dec 17, priced at $137 found 5 days ago
United
Fri, Dec 12 - Sat, Dec 13
ORD
Chicago
IAD
Washington
$137 Roundtrip, found 5 days ago
$137
Roundtrip
found 5 days ago
Select United flight, departing Fri, Dec 12 from Chicago to Washington, returning Sat, Dec 13, priced at $137 found 5 days ago
Delta
Tue, Mar 3 - Wed, Mar 4
ORD
Chicago
IAD
Washington
$139 Roundtrip, found 4 days ago
$139
Roundtrip
found 4 days ago
Select Delta flight, departing Tue, Mar 3 from Chicago to Washington, returning Wed, Mar 4, priced at $139 found 4 days ago
Frontier Airlines
Thu, Dec 11 - Sat, Dec 13
ORD
Chicago
IAD
Washington
$140 Roundtrip, found 4 hours ago
$140
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Thu, Dec 11 from Chicago to Washington, returning Sat, Dec 13, priced at $140 found 4 hours ago
Frontier Airlines
Wed, Dec 3 - Fri, Dec 5
ORD
Chicago
IAD
Washington
$143 Roundtrip, found 5 hours ago
$143
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Wed, Dec 3 from Chicago to Washington, returning Fri, Dec 5, priced at $143 found 5 hours ago
American Airlines
Sat, Dec 6 - Wed, Dec 17
ORD
Chicago
IAD
Washington
$160 Roundtrip, found 5 days ago
$160
Roundtrip
found 5 days ago
Select American Airlines flight, departing Sat, Dec 6 from Chicago to Washington, returning Wed, Dec 17, priced at $160 found 5 days ago

Find the cheapest month to fly from Chicago (ORD) to Washington (IAD)

February is typically the cheapest month to fly

From $114 - $492 per traveler.

Alternative airports near Washington

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Ronald Reagan Washington National DCA. Closest option available. Average driving time to city center is 8 minutes. Flights from $153
DCA
Ronald Reagan Washington National
Closest
Average driving time to city center8 min
Flights from $153

Frequently asked questions

How much does a flight from O'Hare Intl. Airport (ORD) to Washington Dulles Intl. Airport (IAD) cost?
Secure a cheap one-way flight from $55 or cheap return flight from $110 from O'Hare Intl. Airport (ORD) to Washington Dulles Intl. Airport (IAD) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from O'Hare Intl. Airport (ORD) to Washington Dulles Intl. Airport (IAD)?
December is the least expensive month to fly from ORD to IAD. Traveling outside of peak seasons is often the key to scoring lower fares.
Which airlines fly direct from O'Hare Intl. Airport (ORD) to Washington Dulles Intl. Airport (IAD)?
Take a direct flight with United Airlines and head straight from O'Hare Intl. Airport (ORD) to Washington Dulles Intl. Airport (IAD).
What is the cheapest airline that flies from O'Hare Intl. Airport (ORD) to Washington Dulles Intl. Airport (IAD)?
To find the cheapest airline flying from ORD to IAD, use Expedia's filter tool. Tailor your search based on your travel style, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from O'Hare Intl. Airport (ORD) to Washington Dulles Intl. Airport (IAD)?
With an average of 4 nonstop flights that operate from O'Hare Intl. Airport (ORD) to Washington Dulles Intl. Airport (IAD) each day, you'll be cruising above the clouds before you know it.
What are the most popular departure times for flights from O'Hare Intl. Airport (ORD) to Washington Dulles Intl. Airport (IAD)?
More people fly between ORD and IAD at 3 PM than at any other time. Looking to skip the crowds? Try choosing a quieter departure window and you could save on your fare as well.
What day of the week has the most flights from ORD to IAD?
Fly on a Friday if you're after the best choice of flights from O'Hare Intl. Airport (ORD) to Washington Dulles Intl. Airport (IAD).
What is the earliest flight from O'Hare Intl. Airport (ORD) to Washington Dulles Intl. Airport (IAD)?
Take the earliest flight at around 8:50AM UTC-6, heading out of O'Hare Intl. Airport (ORD). You'll be flying for approximately 1h 58m, reaching Washington Dulles Intl. Airport (IAD) at approximately 11:48AM UTC-5.
How long does it take to fly from O'Hare Intl. Airport (ORD) to Washington Dulles Intl. Airport (IAD)?
It takes approximately 1 hour and 54 minutes to travel the 590 mi from ORD to IAD.
What airline has the least delays from ORD to IAD?
United Airlines has the best track record for on-time direct flights from O'Hare Intl. Airport (ORD) to Washington Dulles Intl. Airport (IAD), with an on-time rating of 82%. Use the Expedia App to check your flight status before you take off and get notified of any changes.
What is the best time to fly from O'Hare Intl. Airport (ORD) to Washington Dulles Intl. Airport (IAD)?
Book a flight from O'Hare Intl. Airport (ORD) to Washington Dulles Intl. Airport (IAD) that takes off before 3 PM to reduce the risk of delays and cancellations. Departures after this time are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Washington from O'Hare Intl. Airport (ORD)?
O'Hare Intl. Airport (ORD) has direct flights to Washington. Here are some of the airports you can fly to without layovers:

  • Ronald Reagan Washington National Airport (DCA)
  • Baltimore Washington Intl. Thurgood Marshall Airport (BWI)
  • Washington Dulles Intl. Airport (IAD)

Is it cheaper to buy a plane ticket from O'Hare Intl. Airport (ORD) to Washington Dulles Intl. Airport (IAD) last-minute?
Last-minute fares from ORD to IAD are usually more expensive. To secure the lowest rates, start searching for flights as soon as possible. That being said, if you can play around with your travel dates, you may land a cheap fare right before your trip.
Is it cheaper to book an ORD to IAD flight and hotel package?
Compared with arranging flights and hotels separately, booking an ORD to IAD flight and hotel package with Expedia could lead to significant savings. Better yet, having everything in one convenient place will take the hassle out of planning your trip. Simply pick your flights and choose from our extensive range of hotels, then customize your trip with other add-ons like tours and car rentals.
Can I cancel or change the date of my flight from O'Hare Intl. Airport (ORD) to Washington Dulles Intl. Airport (IAD)?
If you reserved your ORD to IAD flight within the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the type of fare you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal if you want more information.

Book with confidence

Chicago to Washington Flights

The cheapest times to fly from Chicago to Washington

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Chicago to Washington are during the month of December. You can find some of the cheapest flights from Chicago to Washington with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Chicago to Washington

Sunday is one of the best days to book for cheap flights from Chicago to Washington: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Chicago to Washington

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Chicago to Washington in 2025. You can also book with separate airlines for your outbound and return journeys, from $55 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Chicago to Washington flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Chicago to Washington airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Chicago to Washington Flights

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