ORD - IAD

$104 Find Cheap Flights from Chicago O'Hare Airport to Washington Dulles 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 O'Hare Intl to Dulles Intl departing on 8/20. 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, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Washington, D.C. Dulles Intl Airport

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

Cheapest round-trip
$236
Typical prices: $230-$448
Frontier
Thu 7/30Mon 8/3
ORD - IAD • 1 stop
Cheapest non-stop
$237
Typical prices: $297-$453
United Airlines
Sat 7/25Mon 7/27
ORD - IAD • Non-stop
Top airlines
Cheapest • from $235 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with United Airlines. Average duration is 2h 04m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Avoid delays
Most punctual • 81% on-time
Best time • Fewest delays
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $200 (round-trip)
Shortest trip • 4h 05m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 49% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 17% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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 Dulles Intl!
Flight Deals
Booking Insights
Expert advice
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from O'Hare Intl to Dulles 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 O'Hare Intl to Dulles Intl

Thu, Jul 30 - Mon, Aug 3
Frontier Logo
9:28 am - 6:01 pm
ORD
-
IAD
7h 33m
1 stop
Frontier Logo
6:09 pm - 12:15 pm
IAD
-
ORD
19h 06m
1 stop
$236Frontier
Wed, Jul 22 - Fri, Jul 24
Frontier Logo
8:05 am - 7:38 pm
ORD
-
IAD
10h 33m
1 stop
Frontier Logo
8:33 pm - 7:53 am
IAD
-
ORD
12h 20m
1 stop
$237Frontier
Sat, Jul 25 - Tue, Jul 28
Delta Logo
11:12 am - 4:38 pm
ORD
-
IAD
4h 26m
1 stop
Delta Logo
5:26 pm - 8:31 pm
IAD
-
ORD
4h 05m
1 stop
$238Delta
Mon, Aug 3 - Wed, Aug 5
Frontier Logo
7:05 am - 5:14 pm
ORD
-
IAD
9h 09m
1 stop
Frontier Logo
11:11 am - 11:10 pm
IAD
-
ORD
12h 59m
1 stop
$239Frontier
Wed, Aug 5 - Sun, Aug 9
Frontier Logo
8:05 am - 7:38 pm
ORD
-
IAD
10h 33m
1 stop
Frontier Logo
8:33 pm - 8:02 am
IAD
-
ORD
12h 29m
1 stop
$240Frontier
Thu, Aug 20 - Mon, Aug 24
Frontier Logo
8:05 am - 7:44 pm
ORD
-
IAD
10h 39m
1 stop
Frontier Logo
4:52 pm - 11:08 pm
IAD
-
ORD
7h 16m
1 stop
$241Frontier
Thu, Aug 27 - Thu, Aug 27
Delta Logo
8:05 am - 2:05 pm
ORD
-
IAD
5h 00m
1 stop
Delta Logo
7:26 pm - 11:57 pm
IAD
-
ORD
5h 31m
1 stop
$243Delta
Sat, Jul 18 - Tue, Jul 21
Frontier Logo
1:50 pm - 10:55 pm
ORD
-
IAD
8h 05m
1 stop
Frontier Logo
8:33 pm - 7:53 am
IAD
-
ORD
12h 20m
1 stop
$244Frontier
Thu, Sep 17 - Mon, Sep 21
United Airlines Logo
8:42 am - 11:49 am
ORD
-
IAD
2h 07mnonstop
United Airlines Logo
10:27 pm - 11:40 pm
IAD
-
ORD
2h 13mnonstop
$245United Airlines
Wed, Aug 5 - Sun, Aug 9
Frontier Logo
1:50 pm - 10:52 pm
ORD
-
IAD
8h 02m
1 stop
Frontier Logo
5:40 pm - 12:15 pm
IAD
-
ORD
19h 35m
1 stop
$246Frontier
Booking Insights

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

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

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

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport departing in July.

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

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

For Chicago O'Hare Airport to Washington Dulles Airport, Friday is the cheapest day to fly on average and Sunday is the most expensive. Flying from Washington Dulles Airport back to Chicago O'Hare Airport, the best deals are generally found on Thursday, with Monday being the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Chicago O'Hare Intl Airport to Washington, D.C. Dulles 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 Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport is September, where tickets cost $283 (return) on average. On the other hand, the most expensive months are February and June, where the average cost of round-trip tickets is $414 and $374 respectively.

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

No, with an average price for the route of $324, prices are generally cheapest when you fly direct.

How far in advance should I book a flight from Chicago O'Hare Intl Airport to Washington, D.C. Dulles 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 Chicago O'Hare Intl Airport to Washington, D.C. Dulles 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 Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport, you should book around 4 weeks before departure, which saves you about 49% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 15 weeks before departure.

Expert advice

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

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on ORD and IAD

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.

Good to know

Low seasonFebruary
Cheapest flight$104
Best time to beat the crowds but there is an average 21% increase in price.
Most popular time to fly and prices are also 7% lower on average.
Flight from Chicago O'Hare Airport to Washington Dulles Airport

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

Are your dates flexible? Find out the best times to travel from O'Hare Intl to Dulles 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 Chicago O'Hare Airport to Washington Dulles Airport flights

  • Can I fly with kids from Chicago O’Hare Airport to Washington Dulles Airport?

    Yes, you can fly with kids from Chicago O'Hare Airport to Washington Dulles Airport. United Airlines is a suitable choice, offering kid-friendly amenities like in-flight entertainment, kid's meals, and pre-boarding for families. United ensures a pleasant and family-friendly travel experience for you and your children on this route.

  • What is the best way to connect from Washington Dulles Airport to downtown Washington?

    The most efficient way to connect from Washington Dulles Airport to downtown Washington is to take the Silver Line Express Bus to the Wiehle-Reston East Metro station. From there, you can board the Silver Line train, which provides a direct route to downtown Washington, D.C., allowing for a convenient and hassle-free commute.

  • Can I purchase an economy ticket and then upgrade to first class on flights from Chicago O’Hare Airport (ORD) to Washington Dulles Airport (IAD)?

    Yes, you can upgrade from economy to first class on flights from O'Hare International Airport (ORD) to Washington Dulles International Airport (IAD) with United Airlines. United offers MileagePlus members the option to use miles or cash to upgrade their tickets for a more luxurious travel experience in first class, subject to availability.

  • What are the layover options for flights from Chicago O’Hare Airport to Washington Dulles Airport?

    For flights from Chicago O'Hare Airport (ORD) to Washington Dulles Airport (IAD), common layover options include Charlotte Douglas International Airport (CLT) and Philadelphia International Airport (PHL). These airports offer connecting flights and various amenities to ensure a seamless journey between the two destinations.

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

    In the last 5 days, the lowest price for a flight from Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport was $104 for a one-way ticket and $235 for a round-trip.

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

    No

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

    American Airlines, Iberia, Finnair, and British Airways offer inflight Wi-Fi service on the Chicago O'Hare Airport to Washington Dulles Airport flight route.

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

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

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Chicago to Washington, D.C. are United Airlines and Frontier. With an average price for the route of $353 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 5.6.

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

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington Dulles Airport from Chicago O'Hare 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 Chicago O'Hare Airport to Washington Dulles 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 Washington Dulles Airport with an airline and back to Chicago O'Hare Airport with another airline. Booking your flights between Chicago O'Hare Airport and IAD 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 Chicago O'Hare Airport to Washington Dulles 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 Washington Dulles Airport from Chicago O'Hare 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 Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for $217 or less one-way and $430 or less round-trip.
  • If you want to connect to your flight from Chicago O’Hare Airport (ORD) to Washington Dulles Airport (IAD) while in downtown Chicago, you need not worry. The most efficient way is to use the CTA Blue Line which takes about 15 minutes to reach the airport. You may board at any downtown station at any time of the day. If in a rush, you can consider using the taxis or Towncar located in the city center.
  • United Airlines offers special services on flights from O'Hare International Airport (ORD) to Washington Dulles International Airport (IAD). United offers options for passengers with disabilities or those in need of extra assistance, including wheelchair services, priority boarding, and accessible seating. Their dedicated staff ensures a comfortable and accommodating travel experience for all passengers.
  • If you need to fly to Washington from Chicago any time of the day, consider flying with American Airlines, for it has established a major hub at O'Hare International Airport (ORD) for flights to Washington Dulles International Airport (IAD). American Airlines provides convenient connections, a range of flight options, and a comprehensive network, making it a prominent choice for travelers between ORD and IAD.
  • Passengers with luggage should consider flying with United Airlines, a suitable choice for flights from O'Hare International Airport to Washington Dulles International Airport. United Airlines allows carry-ons with dimensions of up to 22 x 14 x 9 inches and a weight limit of 35 lb. Their policy ensures convenient and efficient travel, accommodating passengers' essentials while adhering to size and weight limits.
  • Pet lovers should consider flying with American Airlines on flights from O'Hare International Airport to Washington Dulles International Airport. Their carry-on pet container must not exceed 19 x 13 x 9 inches, and the combined weight of the pet and container should not exceed 20 lb. This airline ensures a comfortable journey for your furry companion.

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

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

Direct departures

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

Direct returns

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

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

 
See real verified KAYAK customer reviews for airlines flying from Chicago to Washington, D.C.. 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 O'Hare Intl to Dulles 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 9906 reviews
8.1Crew
7.3Comfort
6.6Food
7.7Boarding
7.1Entertainment
Airline reviews

Horrible I am at almost 2,000,000 miles on United. This was probably the worst flight ever. An hour and a half before takeoff I get a message that they’re changing the plane and I no longer have a seat in Polaris business Supposedly, there was a problem with the plane, but then there was no other plane Finally, they decided to bring a plane from Newark to Washington Dulles Of course the original flight was at 10:45 PM so by the time the plane got there it was 12:30 AM. It had not been cleaned. It had not been catered. They don’t really have people available to do those things when it’s not pre-programmed at 1 o’clock in the morning. The crew had to be changed And the new plane held 28 fewer people than the scheduled plane There is no way you can hate United Airlines enough The people at the gate were actually just fine, but it was management who was completely useless And did they send extra help to the people at the gate? Did they send supervisors? Of course not. Just don’t take United find somebody else or buy a boat

2.0 MediocreAnonymous, Jun 2026
TPA - IAD
Read more United Airlines reviews

Horrible I am at almost 2,000,000 miles on United. This was probably the worst flight ever. An hour and a half before takeoff I get a message that they’re changing the plane and I no longer have a seat in Polaris business Supposedly, there was a problem with the plane, but then there was no other plane Finally, they decided to bring a plane from Newark to Washington Dulles Of course the original flight was at 10:45 PM so by the time the plane got there it was 12:30 AM. It had not been cleaned. It had not been catered. They don’t really have people available to do those things when it’s not pre-programmed at 1 o’clock in the morning. The crew had to be changed And the new plane held 28 fewer people than the scheduled plane There is no way you can hate United Airlines enough The people at the gate were actually just fine, but it was management who was completely useless And did they send extra help to the people at the gate? Did they send supervisors? Of course not. Just don’t take United find somebody else or buy a boat

MY FAMILY'S LUGGAGE WAS LOST FROM ROME TO BARI. I WAS THE ONLY ONE THAT RECEIVED MY LUGGAGE FROM ROME TO BARI. AFTER DEPLANING IN BARI, WE WASTED A LOT OF TIME AT BAG CLAIMS LOST AND FOUND REPORTING THE CLAIM AND PLEADING FOR THE BAGS TO BE DELIVERED THE NEXT DAY. WE WERE TOLD THAT IT TAKES 3 DAYS MINIMUM TO DELIVER. MY DAUGHTER AND MY GIRLFRIEND NEEDED THEIR PERSONAL THINGS AND WE WERE STAYING 3 HOURS AWAY FROM THE BARI AIRPORT. WE HAD TO DRIVE 3 HOURS TO THE AIRPORT TO COLLECT OUR LOST LUGGAGE THE NEXT DAY. WE ARE NOT HAPPY WITH THE EXPERIENCE

Our flight to Rome, Italy was cancelled the day of and we were never informed. We only found out because I was trying to get into my husbands account and called to get his account number. Had to pay more for worse seating on another airline.

We were a little disappointed to not be able to complete check in online without uploading pics of passports. Also we have KTN's and they weren't on our boarding passes when we got to security. Had to trek back to counter to have them fix.

Excellent service in Polaris class IAD to ZRH. Arrived rested and well fed after the overnight flight.

It's a short hop. My carryon was checked at the gate, I didn't have to drag it all over the airport. Excellent wheelchair assist.

We were delayed for about an hour from taking off due to traffic control procedures at the destination airport. But once in the air, the flight went well. The crew members were great and provided cabin service despite moderate turbulence during much of the flight.

Very thoughtful flight attendant offered me water immediately since I had run to make my connection.

One bag is incorrect and not acceptable for an international flight. The food was not just good. I won't fly with them again.

Food choice was poor and we had to buy on board snacks.

Crew was kind of grumpy and there was no beverage service at all. Sodas were $4. Disappointing.

There's no seats that lean back with little leg space i wad uncomfortable the entire flight. Your charges for extra baggage is despicable and costly!!

Flight was canceled. Most upsetting was message from Kayak, stating that the flight was canceled and click with Kayak for details regarding rebook, refund details. THERE'S NO INFORMATION PROVIDED BY KAYAK EXCEPT THAT FLIGHT IS CANCELED. AND NOW THIS SURVEY TO FIND OUT HOW WAS THE FLIGHT !!!!!!!

There was no food and no entertainment, so I'm not sure why these are even in the survey, as my understanding is frontier does not ever offer food without a few, not even a snack, and there are no screens so unless the flight safety talk is our entertainment why ask how we liked it?. One of the flight attendants say in the back of the plane as people filed in to their seats, yelling orders about where to put baggage and telling people to hurry up. It was the least professional experience I've ever had on a flight.

Just know that everything, and I mean everything is “ala cart”. 60$ just to put something in the overhead bin. I will never fly Frontier again nor do I recommend them to anyone else.

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

The worst. We never made our connection and they did absolutely nothing to help us at the airport.

I didn’t have enough time to catch my connecting flight and had to use a different Airline. I will be requesting a refund.

I brought a ticket and car rental through Travelocity. There was no where to add a KTN. So I thought i’d add it by looking up ticket on frontier website. I tried 3 times with the frontier chat bot to add my KTN it never updated my boarding pass. So then I tried showing up early to do it in person at the airport. The first employee update my ktn in the system and gave me a new boarding pass. I was sent back by tsa to join regular line. Then I was told to add my Ktn. It would cost me $25 extra. Given the length of the cue I did pay. Congratulations! BUT I will NEVER fly frontier again. Plus the plane was very old. It had actual ashtrays and old looking tray backs. Worst travel experience ever. Im warning my friends and family not to use frontier ever.

It was delayed 9 hours for operational reasons, despite the plane arriving to the airport on time.

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

Information on your arrival and departure airports