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Cheap Flights from Chicago to Washington Dulles

Compare Chicago to Washington Dulles flight deals

Find the cheapest month or even day of the year to fly to Washington Dulles

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Flight deals from Chicago to Washington Dulles

Looking for a cheap last-minute deal or the best round-trip flight from Chicago to Washington Dulles Airport? If you want to travel next month, round-trip fares start from AED 647. Find the lowest prices on one-way and round-trip tickets right here.
Washington, D.C..AED 256 per passenger.Departing Wed, Nov 4.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Chicago O'Hare International on Wed, Nov 4, arriving in Washington Dulles.Price includes taxes and charges.From AED 256, select.
Washington, D.C..AED 256 per passenger.Departing Thu, Oct 22.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Chicago O'Hare International on Thu, Oct 22, arriving in Washington Dulles.Price includes taxes and charges.From AED 256, select.
Washington, D.C..AED 309 per passenger.Departing Wed, Sep 30.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Chicago O'Hare International on Wed, Sep 30, arriving in Washington Dulles.Price includes taxes and charges.From AED 309, select.
Washington, D.C..AED 323 per passenger.Departing Mon, Aug 24.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Chicago O'Hare International on Mon, Aug 24, arriving in Washington Dulles.Price includes taxes and charges.From AED 323, select.
Washington, D.C..AED 324 per passenger.Departing Mon, Nov 23.One-way flight with United.Outbound direct flight with United departing from Chicago O'Hare International on Mon, Nov 23, arriving in Washington Dulles.Price includes taxes and charges.From AED 324, select.
Washington, D.C..AED 324 per passenger.Departing Sat, Sep 19.One-way flight with United.Outbound direct flight with United departing from Chicago O'Hare International on Sat, Sep 19, arriving in Washington Dulles.Price includes taxes and charges.From AED 324, select.
Washington, D.C..AED 324 per passenger.Departing Wed, Dec 2.One-way flight with United.Outbound direct flight with United departing from Chicago O'Hare International on Wed, Dec 2, arriving in Washington Dulles.Price includes taxes and charges.From AED 324, select.
Washington, D.C..AED 325 per passenger.Departing Thu, Aug 20.One-way flight with United.Outbound direct flight with United departing from Chicago O'Hare International on Thu, Aug 20, arriving in Washington Dulles.Price includes taxes and charges.From AED 325, select.
Washington, D.C..AED 448 per passenger.Departing Tue, Jan 5.One-way flight with United.Outbound direct flight with United departing from Chicago O'Hare International on Tue, Jan 5, arriving in Washington Dulles.Price includes taxes and charges.From AED 448, select.
Washington, D.C..AED 448 per passenger.Departing Sat, Oct 10.One-way flight with United.Outbound direct flight with United departing from Chicago O'Hare International on Sat, Oct 10, arriving in Washington Dulles.Price includes taxes and charges.From AED 448, select.
Washington, D.C..AED 565 per passenger.Departing Wed, May 19.One-way flight with Delta.Outbound indirect flight with Delta, departing from Chicago Midway on Wed, May 19, arriving in Washington Dulles.Price includes taxes and charges.From AED 565, select.
Washington, D.C..AED 565 per passenger.Departing Fri, Mar 12.One-way flight with United.Outbound direct flight with United departing from Chicago O'Hare International on Fri, Mar 12, arriving in Washington Dulles.Price includes taxes and charges.From AED 565, select.
Washington, D.C..AED 566 per passenger.Departing Wed, Feb 3.One-way flight with Delta.Outbound indirect flight with Delta, departing from Chicago Midway on Wed, Feb 3, arriving in Washington Dulles.Price includes taxes and charges.From AED 566, select.
Washington, D.C..AED 566 per passenger.Departing Tue, Apr 20.One-way flight with American Airlines.Outbound indirect flight with American Airlines, departing from Chicago O'Hare International on Tue, Apr 20, arriving in Washington Dulles.Price includes taxes and charges.From AED 566, select.
Washington, D.C..AED 584 per passenger.Departing Wed, Jul 22.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Chicago Midway on Wed, Jul 22, arriving in Washington Dulles.Price includes taxes and charges.From AED 584, select.
Washington, D.C..AED 670 per passenger.Departing Wed, May 19.One-way flight with United.Outbound direct flight with United departing from Chicago O'Hare International on Wed, May 19, arriving in Washington Dulles.Price includes taxes and charges.From AED 670, select.

Find the cheapest month to fly from Chicago to Washington Dulles

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Chicago to Washington Dulles flights are currently cheapest in October.
Jul
from AED 584
Aug
from AED 323
Sep
from AED 309
Oct
from AED 256
Nov
from AED 256
Dec
from AED 324
Jan
from AED 448
Feb
from AED 566
Mar
from AED 565
Apr
from AED 566
May
from AED 565
Jun
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Direct flights from Chicago to Washington Dulles

Chicago to Washington Dulles: Alternative routes

Compare routes from Chicago to Washington, D.C. below. You may find an airport to fly into that's cheaper, faster, or easier than Washington Dulles.

Washington Ronald Reagan

5km from central Washington, D.C.
Closest
from AED 324
Search flights

Washington Dulles

37km from central Washington, D.C.
from AED 256
Search flights

Baltimore Washington International

44km from central Washington, D.C.
Cheapest
from AED 121
Search flights

Chicago to Washington, D.C.: Flight information

The things to know before you go.
Cheapest flight foundAED 256
Cheapest month to flyNovember
Average flight time2 hrs, 2 mins
Most popular airlineUnited
Average flights per week530

Finding cheap flights from Chicago to Washington Dulles: Frequently asked questions

The best price we found for a round-trip flight from Chicago to Washington Dulles is AED 617. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
2 hours and 2 minutes is the average flight time from Chicago to Washington Dulles.
United, Air Canada and Air New Zealand fly direct from Chicago to Washington Dulles.
There are 530 flights per week flying from Chicago to Washington Dulles, as of July 2026.
The cheapest month to fly from Chicago to Washington Dulles is usually October.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Chicago to Washington Dulles Airport on Wednesday, October 21, 2026.
Yes – the average flight time is 2 hours and 2 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Washington Dulles but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to Washington, D.C. is around 40 days in advance, so don’t leave your flight to the last minute.

Washington Dulles International Airport is the primary airport in Washington located 40km from the center of the city. There are two flights from Chicago O’Hare International Airport to Washington Dulles - United Airlines and its shuttle service United Express.

* This information is correct as of June 2017

Airport Information - Arriving

Washington Dulles International Airport is set within a single terminal complex and offers everything you would need for a pleasant stay. The airport is home to a wide range of shops where you can pick up some last-minute travel essentials before continuing your journey, while there are also many restaurants and cafes available to satisfy your appetite. Once you have landed at Washington Dulles International Airport there are many buses that run into the center of the city, although you can just as easily catch a taxi outside the airport to reach your destination.

Airport Information - Departing

Chicago O’Hare International Airport is Chicago’s main airport located around 27km outside of the city. You can choose from one of many different places to eat and drink offering everything from restaurant fare to convenient fast food, while there are also many shops to explore if you need to buy any last-minute gifts or travel essentials. Getting to the airport from central Chicago is easy as the airport is connected to the CTA Blue Line, with the journey taking around 45 minutes. You may also choose to spend your time waiting for your flight in one of the airport lounges which offers many great amenities such as complimentary refreshments.

What to Expect in Washington

In Washington the weather varies considerably depending on the time of year - while its summer can be hot and pleasant, winters in Washington get very cold so make sure you pack the right clothes. Given that you will be flying on a domestic route there is no need to acquire a visa, but make sure you bring along all of your travel documents including your passport and boarding pass or booking reference. Check out the top hotels in Washington to make the most out of your stay.


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Plan the rest of your trip from Chicago to Washington, D.C.

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.