IAD - ORD

$77 Find Cheap Flights from Washington Dulles Airport to Chicago O'Hare Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to O'Hare Intl departing on 10/30. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Chicago O'Hare Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Chicago, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Chicago, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Dulles Intl to O'Hare Intl (IAD-ORD)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl to O'Hare Intl that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Dulles Intl to O'Hare Intl

Thu, Oct 2 - Tue, Oct 7
Frontier Logo
6:10 am - 10:31 amIAD-ORD
5h 21m1 stop
Frontier Logo
11:00 am - 7:46 pmORD-IAD
7h 46m1 stop
$135Frontier
Find Deal
Fri, Oct 3 - Sat, Oct 4
Frontier Logo
6:10 am - 3:50 pmIAD-ORD
10h 40m1 stop
Frontier Logo
12:22 pm - 10:56 pmORD-IAD
9h 34m1 stop
$137Frontier
Find Deal
Wed, Oct 1 - Tue, Oct 7
Frontier Logo
9:15 am - 5:39 pmIAD-ORD
9h 24m1 stop
Frontier Logo
11:00 am - 7:46 pmORD-IAD
7h 46m1 stop
$143Frontier
Find Deal
Fri, Oct 3 - Sat, Oct 4
Frontier Logo
6:10 am - 3:50 pmIAD-ORD
10h 40m1 stop
Frontier Logo
12:22 pm - 10:56 pmORD-IAD
9h 34m1 stop
$144Frontier
Find Deal
Sun, Sep 28 - Tue, Oct 21
Frontier Logo
7:14 pm - 7:44 pmIAD-ORD
25h 30m1 stop
Frontier Logo
11:00 am - 7:46 pmORD-IAD
7h 46m1 stop
$145Frontier
Find Deal
Thu, Oct 2 - Sun, Oct 5
Frontier Logo
6:10 am - 10:31 amIAD-ORD
5h 21m1 stop
Frontier Logo
8:49 pm - 6:24 pmORD-IAD
20h 35m1 stop
$146Frontier
Find Deal
Thu, Oct 30 - Tue, Nov 4
Frontier Logo
6:00 am - 10:41 amIAD-ORD
5h 41m1 stop
Frontier Logo
12:37 pm - 8:20 pmORD-IAD
6h 43m1 stop
$149Frontier
Find Deal
Fri, Oct 17 - Mon, Oct 20
Frontier Logo
9:28 pm - 6:33 pmIAD-ORD
22h 05m1 stop
Frontier Logo
12:28 pm - 11:18 pmORD-IAD
9h 50m1 stop
$151Frontier
Find Deal
Wed, Oct 22 - Sun, Oct 26
Multiple Airlines Logo
9:00 am - 1:47 pmIAD-ORD
5h 47m1 stop
Multiple Airlines Logo
6:54 pm - 9:38 pmORD-IAD
25h 44m1 stop
$184Multiple Airlines
Find Deal
Thu, Oct 2 - Sun, Oct 5
Multiple Airlines Logo
6:10 am - 10:31 amIAD-ORD
5h 21m1 stop
Multiple Airlines Logo
6:00 am - 6:14 pmORD-IAD
11h 14m1 stop
$200Multiple Airlines
Find Deal

Everything you should know

Our travelers' advice
AI-generated summary based on content written by travel experts
Use the AeroTrain for quick terminal transfers at IAD.
The CTA Blue Line from ORD offers a 45-minute downtown ride.
Expert advice
Expert advice
Expert advice
Expert advice
When to book
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 50% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 9% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$135
Typical prices: $229-439
Frontier
Thu 10/2Tue 10/7
IAD - ORD • 1 stop
Cheapest non-stop
$237
Typical prices: $230-479
United Airlines
Tue 10/21Wed 10/22
IAD - ORD • Non-stop
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to O'Hare Intl!
Expert advice

Expert advice for your flight from Dulles Intl to O'Hare Intl

 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airports
IAD

For a smooth departure from IAD, plan your route using the airport map and choose between the AeroTrain or mobile lounges for terminal transfers.

Read more about IADby Stefanie Waldek
ORD

Take the CTA Blue Line from ORD to downtown Chicago for a 45-minute ride, avoiding traffic and offering free transfers to other lines.

Read more about ORDby Stefanie Waldek
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on ORD and IAD

Stefanie Waldek

Stefanie Waldek

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Read more
Booking Insights

KAYAK's insights & trends for Dulles Intl to O'Hare Intl flights

Get data-powered insights and trends into flights from Dulles Intl to O'Hare Intl to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport?

What’s the cheapest day of the week to fly from Washington Dulles Airport to Chicago O'Hare Airport?

The average price of all round-trip flights from Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Washington Dulles Airport to Chicago O'Hare Airport, look for departures on Fridays and avoid leaving on a Monday, as it's usually the priciest day. When flying back from Chicago O'Hare Airport, Friday is the cheapest day to fly and Sunday is the most expensive.

What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport is January, where tickets cost $299 (return) on average. On the other hand, the most expensive months are February and December, where the average cost of round-trip tickets is $390 and $376 respectively.

Can I save money by flying with a layover from Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $301 on average.

How far in advance should I book a flight from Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport, you should book around 4 weeks before departure, which saves you about 50% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 17 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$77
Best time to beat the crowds but there is an average 18% increase in price.
Most popular time to fly and prices are also 10% lower on average.
Flight from Washington Dulles Airport to Chicago O'Hare Airport

When to book flights from Dulles Intl to O'Hare Intl

Are your dates flexible? Find out the best times to travel from Dulles Intl to O'Hare Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Washington Dulles Airport to Chicago O'Hare Airport flights

  • Which airlines have their hub at O’Hare International Airport?

    Consider booking flights from Washington Dulles Airport to Chicago O’Hare with American Airlines, United Airlines, or Spirit Airlines. O’Hare International Airport (ORD) is a hub for United Airlines and American Airlines and is an operating base for Spirit Airlines. Flying with these three carriers gives you more flight options to ORD, and you can easily connect to other cities from the destination airport. American Airlines and Spirit Airlines operate out of Terminal 3, while United Airlines operates from Terminal 1.

  • Which airlines from Washington Dulles Airport to Chicago O’Hare Airport offer the Unaccompanied Minor Service?

    Delta Air Lines requires children aged five to 14 to use the Unaccompanied Minor Service when flying to ORD from IAD alone. It is also available for those aged from 15 to 17 on request. The accompanying guardian should also show a photo ID with their address, phone number, and the pick-up adult’s address, contact, and name at check-in.

  • Which airlines from Washington Dulles to Chicago O’Hare have accessible services for reduced-mobility passengers?

    Differently-abled travelers can book flights from Washington Dulles Airport (IAD) to Chicago O’Hare Airport (ORD) with Alaska Airlines or United Airlines. The carrier’s seats have armrests to ease movement, and aircraft lavatories have handrails. In addition to wheelchair assistance, they provide baggage handling services. Low-vision passengers get braille and large-print reading materials on Alaska Airlines, while hard-of-hearing travelers get free headsets.

  • What is the carry-on policy for flights from Washington Dulles to Chicago O’Hare?

    Frontier allows one carry-on and a personal item like a computer bag or a backpack on flights from IAD to ORD. The carry-on should be at most 35 lb and 24 x 16 x 10 inches to fit in the overhead bin. The personal item should be no larger than 14 x 18 x 8 inches and fit beneath an airplane seat.

  • What is the cheapest flight from Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport?

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport was $77 for a one-way ticket and $135 for a round-trip.

  • Do I need a passport to fly between Washington Dulles Airport and Chicago O'Hare Airport?

    No, a passport isn't needed to fly from Washington Dulles Airport to Chicago O'Hare Airport. However, local authorities might ask for an official ID.

  • Which airports will I be using when flying from Washington Dulles Airport to Chicago O'Hare Airport?

    Washington Dulles Airport and Chicago O'Hare Airport are both served by 1 main airport. You will leave Washington Dulles Airport from Washington, D.C. Dulles Intl and will be arriving at Chicago O'Hare Intl.

  • Which airlines offer Wi-Fi service onboard planes from Washington Dulles Airport to Chicago O'Hare Airport?

    American Airlines, Delta, Hawaiian Airlines, and Alaska Airlines offer inflight Wi-Fi service on the Washington Dulles Airport to Chicago O'Hare Airport flight route.

  • Which aircraft models fly most regularly from Washington Dulles Airport to Chicago O'Hare Airport?

    The Boeing 737-900 is the aircraft model that flies most regularly on the Washington Dulles Airport to Chicago O'Hare Airport flight route.

  • Which airline alliances offer flights from Washington Dulles Airport to Chicago O'Hare Airport?

    Star Alliance is the only airline alliance operating flights between Washington Dulles Airport and Chicago O'Hare Airport.

  • On which days can I fly direct from Washington Dulles Airport to Chicago O'Hare Airport?

    There are nonstop flights from Washington Dulles Airport to Chicago O'Hare Airport on a daily basis.

  • Which is the best airline for flights from Washington, D.C. to Chicago, United Airlines or Frontier?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Chicago are United Airlines and Frontier. With an average price for the route of $339 and an overall rating of 7.4, United Airlines is the most popular choice. Frontier is also a great choice for the route, with an average price of $208 and an overall rating of 5.8.

  • How does KAYAK find such low prices on flights from Washington Dulles Airport to Chicago O'Hare Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington Dulles Airport to Chicago O'Hare Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington Dulles Airport to Chicago O'Hare Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Chicago O'Hare Airport from Washington Dulles Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington Dulles Airport to Chicago O'Hare Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Chicago O'Hare Airport with an airline and back to Washington Dulles Airport with another airline. Booking your flights between Washington Dulles Airport and ORD can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport to Chicago O'Hare Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Chicago O'Hare Airport from Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for $188 or less one-way and $309 or less round-trip.
  • If you are flying from Washington Dulles Airport (IAD) to O’Hare International Airport (ORD) with your kids, consider booking flights with Alaska Airlines. The airline has a Family Boarding program for fast-track boarding so you can get settled early.
  • Flights from IAD to ORD may have layovers, depending on your airline. United Airlines, Delta, American Airlines, and Alaska Airlines operate on this route, and they frequently stop at their operating bases or hubs, including Charlotte, San Francisco, Seattle, Detroit, and New Jersey.
  • Frontier and American Airlines are eco-friendly airlines that operate from IAD to ORD. Frontier has a young fuel-efficient fleet, and American Airlines has a carbon offset program that invests in carbon reduction projects.
  • You can fly First Class from IAD to ORD with American Airlines or United Airlines. United First passengers can access the United Club lounges in Terminal 1 near Gates B6 and B18. American Airlines First Class passengers get access to the American Airlines Admirals Club in Concourse G of ORD’s Terminal 3. Other perks include priority boarding and in-flight entertainment.
  • You can carry your pet on flights from IAD to ORD with American Airlines. The pet should be in an 18 x 11 x 11 inches kennel with enough room to move around. The total weight of the carrier plus pet should not exceed 20 lb.

Prefer to fly direct from Washington Dulles Airport to Chicago O'Hare Airport?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Washington, D.C. Dulles Intl to Chicago O'Hare Intl.
Find which airlines fly direct from Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport, which days they fly and book direct flights.

Direct departures

Washington, D.C. Dulles Intl to Chicago O'Hare Intl

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

Direct returns

Chicago O'Hare Intl to Washington, D.C. Dulles Intl

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

Reviews of the top airlines flying from Dulles Intl to O'Hare Intl

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Chicago. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Dulles Intl to O'Hare Intl? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 8926 reviews
7.7Boarding
8.1Crew
7.3Comfort
7.1Entertainment
6.6Food
Airline reviews

Flight attendant in first class gave poor service (like he didn't want to be there) and food was awful. We sat waiting for gate upon arrival over 45 mins.

2.0 MediocreAnonymous, Aug 2025RSW - ORD
Read more United Airlines reviews

Flight attendant in first class gave poor service (like he didn't want to be there) and food was awful. We sat waiting for gate upon arrival over 45 mins.

Weather delay in Chicago?. No sense of urgency to make connection in Chicago for our connecting flight that wasn't delayed. Connection was missed.

Overall it was good. I missed my connection but I was put on another flight.

Overall a very poor experience - booked premium economy tickets but due to last minute flight delays , all my itinery went for a toss and had to fly economy class with no access to lounge or any compensation by united airlines to make up for the flight delays . i had expected better experience than that from united.

It was fine, definitely older planes with no charging or anything. There’s no entertainment set up on board, but it is nice that they allow you to access the in flight entertainment from your phone without having to pay for the Wi-Fi and they do offer free texting.

I liked that the flight was nonstop from ORD to CIU for $200 round trip.

While the staff was pleasant and helpful, the following observations are for your awareness. There was some delay on the tarmac on take off and landing. The paid lunch/food offerings were limited. Entertainment was only available on WiFi at a cost.

The first flight was better in terms of the aircraft.

Smooth flight. Boarding was chaotic. Could not hear the gate agent over the intercom. People were lined up in the wrong lines. Groups one and two were told to board through line one and group 3 through line 2. All very confusing. Once in the air, the flight was smooth. There was no entertainment option on this aircraft, even though it was a larger aircraft.

Overall poor for me I paid extra for seats with leg room and my regional flights exit row seats have less leg room then the others that's money that could have been saved and on my final flight home the flights air was not operating it was unbearably hot in the cabin I will be contacting United and filing a DOT complaint

Seats were new and comfortable. Staff was fine. Missed my connection due to weather -which wasn’t their fault- but got no help at all. Gate staff sent me to customer service, which was and stayed unstaffed. Sign with QR code directed me to call or chat. Chat was useless. Call was returned after an hour. No itinerary offered by Frontier could get me home in less than 30 hours. Rebooked with another airline and got a partial refund that came to about 10 percent of what I paid to get home.

Finally a Frontier on time and efficient. I've had problems before with your airline, but this time everything went fine.

The experience was good. No frills but I got there safe and sound and on time.

Great for the price. No wifi or entertainment, but gate agents and crew were fantastic and we boarded quickly and left on time.

sluggish boarding and arrival procedures, fake nice flight attendants, and lots of delays.

Disaster. They lied every step of the way. We ended up being delayed due to crew and then allegedly abandoned the flight because of a curfew at LGA. No rebooking to LGA at any reasonable time. No hotel. No meal vouchers. Had to sleep in the airport and fly to Newark instead. Will never fly Frontier again.

What I expected, nickeled and dined and a frontier flight attendant loudly complained about her job and lack of communication as she headed to the gate on her cell phone. Not professional.

As every law enforcement agency I could imagine surrounded the plane and we didn’t disembark for 2 hours and then had to stick around for another hour to go get our personal belongings after leaving them behind and being bused away from the plane, it was scary and inconvenient. We were given no information as to why this was happening. Lack of communication with passengers was disappointing.

After boarding and un-boarding twice over 6+hours, the flight was canceled.

Severe turbulence. Captain never came on to reassure passengers after things settled down.

Everything you need to know for your flight from Dulles Intl to O'Hare Intl

Information on your arrival and departure airports

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