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Cheap Flights from Chicago O'Hare International to Washington Dulles

Compare Chicago O'Hare International 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 O'Hare International to Washington Dulles

Looking for a cheap last-minute deal or the best return flight from Chicago O'Hare International Airport to Washington Dulles Airport? If you want to travel next month, return fares start from R 2,399. Find the lowest prices on one-way and return tickets right here.
Washington D.C..R 1,035 per passenger.Departing Thu, 6 Aug.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Chicago O'Hare International on Thu, 6 Aug, arriving in Washington Dulles.Price includes taxes and charges.From R 1,035, select.
Washington D.C..R 1,311 per passenger.Departing Thu, 10 Sep.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Chicago O'Hare International on Thu, 10 Sep, arriving in Washington Dulles.Price includes taxes and charges.From R 1,311, select.
Washington D.C..R 1,382 per passenger.Departing Mon, 5 Oct.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Chicago O'Hare International on Mon, 5 Oct, arriving in Washington Dulles.Price includes taxes and charges.From R 1,382, select.
Washington D.C..R 1,452 per passenger.Departing Tue, 11 Aug.One-way flight with United.Outbound direct flight with United departs from Chicago O'Hare International on Tue, 11 Aug, arriving in Washington Dulles.Price includes taxes and charges.From R 1,452, select.
Washington D.C..R 1,452 per passenger.Departing Sat, 12 Dec.One-way flight with United.Outbound direct flight with United departs from Chicago O'Hare International on Sat, 12 Dec, arriving in Washington Dulles.Price includes taxes and charges.From R 1,452, select.
Washington D.C..R 1,452 per passenger.Departing Sat, 3 Oct.One-way flight with United.Outbound direct flight with United departs from Chicago O'Hare International on Sat, 3 Oct, arriving in Washington Dulles.Price includes taxes and charges.From R 1,452, select.
Washington D.C..R 1,452 per passenger.Departing Sat, 19 Sep.One-way flight with United.Outbound direct flight with United departs from Chicago O'Hare International on Sat, 19 Sep, arriving in Washington Dulles.Price includes taxes and charges.From R 1,452, select.
Washington D.C..R 1,454 per passenger.Departing Mon, 2 Nov.One-way flight with United.Outbound direct flight with United departs from Chicago O'Hare International on Mon, 2 Nov, arriving in Washington Dulles.Price includes taxes and charges.From R 1,454, select.
Washington D.C..R 2,371 per passenger.Departing Tue, 5 Jan.One-way flight with United.Outbound direct flight with United departs from Chicago O'Hare International on Tue, 5 Jan, arriving in Washington Dulles.Price includes taxes and charges.From R 2,371, select.
Washington D.C..R 2,443 per passenger.Departing Sat, 1 May.One-way flight with United.Outbound direct flight with United departs from Chicago O'Hare International on Sat, 1 May, arriving in Washington Dulles.Price includes taxes and charges.From R 2,443, select.
Washington D.C..R 2,529 per passenger.Departing Fri, 31 Jul.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Chicago O'Hare International on Fri, 31 Jul, arriving in Washington Dulles.Price includes taxes and charges.From R 2,529, select.
Washington D.C..R 2,535 per passenger.Departing Fri, 12 Mar.One-way flight with United.Outbound direct flight with United departs from Chicago O'Hare International on Fri, 12 Mar, arriving in Washington Dulles.Price includes taxes and charges.From R 2,535, select.
Washington D.C..R 2,540 per passenger.Departing Wed, 3 Feb.One-way flight with Delta.Outbound indirect flight with Delta, departs from Chicago O'Hare International on Wed, 3 Feb, arriving in Washington Dulles.Price includes taxes and charges.From R 2,540, select.
Washington D.C..R 2,541 per passenger.Departing Tue, 20 Apr.One-way flight with American Airlines.Outbound indirect flight with American Airlines, departs from Chicago O'Hare International on Tue, 20 Apr, arriving in Washington Dulles.Price includes taxes and charges.From R 2,541, select.
Washington D.C..R 3,041 per passenger.Departing Tue, 20 Apr.One-way flight with United.Outbound direct flight with United departs from Chicago O'Hare International on Tue, 20 Apr, arriving in Washington Dulles.Price includes taxes and charges.From R 3,041, select.
Washington D.C..R 3,042 per passenger.Departing Wed, 3 Feb.One-way flight with United.Outbound direct flight with United departs from Chicago O'Hare International on Wed, 3 Feb, arriving in Washington Dulles.Price includes taxes and charges.From R 3,042, select.

Find the cheapest month to fly from Chicago O'Hare International to Washington Dulles

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Chicago O'Hare International to Washington Dulles flights are currently cheapest in August.
Jul
from R 2,513
Aug
from R 1,028
Sep
from R 1,303
Oct
from R 1,373
Nov
from R 1,445
Dec
from R 1,442
Jan
from R 2,356
Feb
from R 2,524
Mar
from R 2,519
Apr
from R 2,525
May
from R 2,427
Jun
Find prices

Direct flights from Chicago O'Hare International to Washington Dulles

Chicago O'Hare International to Washington Dulles: Alternative routes

Compare routes from Chicago O'Hare International 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 R 1,334
Search flights

Washington Dulles

37km from central Washington D.C.
from R 1,035
Search flights

Baltimore Washington International

44km from central Washington D.C.
Cheapest
from R 542
Search flights

Chicago to Washington D.C.: Flight information

The things to know before you go.
Cheapest flight foundR 1,035
Cheapest month to flyAugust
Average flight time2 hrs, 1 min
Most popular airlineUnited
Average flights per week246

Finding cheap flights from Chicago O'Hare International to Washington Dulles: Frequently asked questions

The best price we found for a return flight from Chicago O'Hare International to Washington Dulles is R 2,414. 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 1 minute is the average flight time from Chicago O'Hare International to Washington Dulles.
United, Air Canada and Air New Zealand fly direct from Chicago O'Hare International to Washington Dulles.
As of July 2026, there are 246 flights per week flying from Chicago O'Hare International to Washington Dulles.
The cheapest month to fly from Chicago O'Hare International to Washington Dulles is usually August.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Chicago O'Hare International Airport to Washington Dulles Airport on Monday, 10 August 2026.
Yes – the average flight time is 2 hours and 1 minute.
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.

Currently, Frontier Airlines and United offer the cheapest flight tickets to Washington Dulles.

Flying from Chicago O'Hare International Airport (ORD) to Washington Dulles Airport (IAD): what you need to know

  • Around 2 hours is how long you can expect to be in the air on a direct flight from Chicago O'Hare International Airport to Washington Dulles Airport.

  • The timezone in Washington DC is UTC-5, which is one hour ahead of Chicago.

  • Take your pick of 45 weekly Chicago O'Hare International Airport to Washington Dulles Airport flights. The 08:45 departure with United Airlines is the earliest you can take. United Airlines operates the last service of the day at 21:31.

  • Your ORD to IAD flight won't wait if you're running late, so get to the airport on time. Arrive up to one hour in advance for domestic flights and two hours ahead when you're flying internationally.

  • You'll likely experience longer queues during popular months like July. Arriving up to four hours in advance for an international flight and two hours for domestic departures is a good idea.

  • Travelling to Washington DC (and then seeing more of the United States!) is a cinch with United. This popular airline has direct flights from Chicago O'Hare International Airport to Washington Dulles Airport.

  • The airline that serves the most passengers on this route is United.

  • With 72.82% of its services arriving as scheduled, United is the most punctual carrier operating ORD to IAD flights.

  • If you'd like to include a stop along the way, simply deselect 'Direct flights only' when searching for your ticket from Chicago O'Hare International Airport to Washington Dulles Airport. These are the top stopovers between ORD and IAD:

    • Detroit Wayne County Airport

    • Cleveland Hopkins International Airport

    • Milwaukee General Mitchell Airport

Handy information about Chicago O'Hare International Airport (ORD)

  • ORD's address is 10000 West O'Hare.

  • When it comes to Chicago O'Hare International Airport's on-time performance, data shows 70% of flights complete their journey on time.

  • To get to Chicago O'Hare International Airport from central Chicago, it takes about 30 minutes if you're travelling by car. This depends on traffic though. It's approximately 27 kilometres from the airport to the city centre.

  • The trip when using public transport takes roughly 45 minutes.

  • Searching for a handy hotel near ORD? If you're catching an early flight from Chicago O'Hare International Airport to Washington Dulles Airport, these accommodation options will have you moments from your check-in counter:

Arriving at Washington Dulles Airport (IAD)

When to fly to Washington Dulles Airport (IAD)

  • July is the busiest month for flights from Chicago O'Hare International Airport to Washington Dulles Airport. To skip the crowds, go to Washington DC in February.

  • Lock in your flight from Chicago O'Hare International Airport to Washington Dulles Airport for July if you want to go to Washington DC during its warmest month. Expect temperatures of between 19ºC (66ºF) and 33ºC (91ºF).

  • Look for cheap tickets from ORD to IAD in January if you like travelling in cooler conditions. Temperatures are at their lowest around then, ranging between -6ºC (21ºF) and 10ºC (50ºF) on average.

Explore more of the United States

  • You've visited Washington DC, now it's time to discover other parts of the United States. Travel around 322 kilometres north-east to New York to check off its top attractions. From Central Park to Statue of Liberty and Metropolitan Museum of Art, you'll have a packed itinerary ahead.

  • If you want to check out another great destination in the United States, head for Philadelphia, about 193 kilometres north-east of Washington DC. Independence Hall, Liberty Bell and Philadelphia Museum of Art are key highlights.

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.