ORD - IAD

$79 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 1/12. 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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$158
Overall average: $369
Frontier
Thu 1/8Mon 1/12
ORD - IAD • 1 stop
Cheapest non-stop
$223
Typical prices: $303-$506
United Airlines
Thu 12/25Thu 1/1
ORD - IAD • Non-stop
Our travelers' advice
AI-powered summary based on content written by travel experts. AI can make mistakes.
Avoid peak times at ORD for a quick security check.
Use the Silver Line Metro from IAD to reach downtown D.C.
Expert advice
Expert advice
Expert advice
Expert advice
Video guide: How to find cheap flights to Dulles Intl
Watch video
Watch video
Watch video
Watch video
When to book
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 54% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
September
Cheapest • 10% price drop
March
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, Jan 8 - Mon, Jan 12
Frontier Logo
8:27 pm - 7:55 am
ORD
-
IAD
10h 28m1 stop
Frontier Logo
6:00 am - 11:35 am
IAD
-
ORD
6h 35m1 stop
$158Frontier
Thu, Jan 8 - Mon, Jan 12
Multiple Airlines Logo
8:43 pm - 2:08 pm
ORD
-
IAD
16h 25m2 stops
Multiple Airlines Logo
6:00 am - 11:35 am
IAD
-
ORD
6h 35m1 stop
$159Multiple Airlines
Sat, Jan 24 - Sat, Jan 31
Frontier Logo
9:15 am - 12:35 pm
ORD
-
IAD
26h 20m1 stop
Frontier Logo
11:39 am - 10:44 pm
IAD
-
ORD
12h 05m1 stop
$160Frontier
Wed, Jan 21 - Sun, Jan 25
Multiple Airlines Logo
10:07 am - 10:42 am
ORD
-
IAD
23h 35m1 stop
Multiple Airlines Logo
5:37 pm - 8:18 am
IAD
-
ORD
15h 41m2 stops
$161Multiple Airlines
Thu, Jan 8 - Thu, Jan 15
Frontier Logo
8:27 pm - 7:55 am
ORD
-
IAD
10h 28m1 stop
Frontier Logo
6:00 am - 12:08 pm
IAD
-
ORD
7h 08m1 stop
$162Frontier
Mon, Jan 12 - Fri, Jan 16
Frontier Logo
4:49 pm - 11:43 am
ORD
-
IAD
17h 54m1 stop
Frontier Logo
6:00 am - 12:08 pm
IAD
-
ORD
7h 08m1 stop
$163Frontier
Thu, Jan 8 - Mon, Jan 12
Multiple Airlines Logo
8:43 pm - 2:08 pm
ORD
-
IAD
16h 25m2 stops
Multiple Airlines Logo
6:00 am - 11:35 am
IAD
-
ORD
6h 35m1 stop
$164Multiple Airlines
Thu, Jan 8 - Sun, Jan 11
Frontier Logo
8:27 pm - 7:55 am
ORD
-
IAD
10h 28m1 stop
Frontier Logo
6:00 am - 11:35 am
IAD
-
ORD
6h 35m1 stop
$167Frontier
Thu, Jan 8 - Mon, Jan 12
Multiple Airlines Logo
8:43 pm - 2:08 pm
ORD
-
IAD
16h 25m2 stops
Multiple Airlines Logo
6:00 am - 11:35 am
IAD
-
ORD
6h 35m1 stop
$168Multiple Airlines
Thu, Jan 8 - Sun, Jan 11
Frontier Logo
8:27 pm - 7:55 am
ORD
-
IAD
10h 28m1 stop
Frontier Logo
6:00 am - 11:35 am
IAD
-
ORD
6h 35m1 stop
$169Frontier
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.

Find cheap flights to Washington Dulles Airport
Find cheap flights to Washington Dulles Airport

Planning a trip from O'Hare Intl to Dulles Intl? KAYAK’s data-powered insights will help you find cheap flights. Learn the best time to fly, how early to book your ticket, and other tips to secure great prices.

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 Friday, 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 $282 (return) on average. On the other hand, the most expensive months are January and November, where the average cost of round-trip tickets is $369 and $346 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.

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 $329 on average.

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 54% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 8 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.
Airports
ORD

For a quick security check, avoid peak times at ORD, where lines can exceed 30 minutes. Off-peak hours are much faster.

IAD

Use the Silver Line Metro from IAD to reach downtown D.C. in about 50 minutes. It's a convenient and affordable option.

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

Good to know

Low seasonFebruary
Cheapest flight$79
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly and prices are also 5% 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 3 days, the lowest price for a flight from Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport was $79 for a one-way ticket and $158 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, and Finnair 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?

    SkyTeam, and Star Alliance are the airline alliances operating flights between Chicago O'Hare Airport and Washington Dulles Airport, with SkyTeam being the most commonly used for this route.

  • 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., Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Chicago to Washington, D.C. are Delta and United Airlines. With an average price for the route of $222 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $322 and an overall rating of 7.4.

  • 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 $233 or less one-way and $566 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 3 airlines serving 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.
7.9
DeltaOverall score based on 8009 reviews
7.9Comfort
8.1Boarding
8.5Crew
7.9Entertainment
7.3Food
Airline reviews

Lady Pilot was perfect in every way wheels up to wheels down communication, professionalism, excellent on time departure and on time arrival, excellent communication! Fantastic job with Superb attitude!!

10.0 ExcellentVenkata Krishna, Dec 2025
ATL - SDF
Read more Delta reviews

Lady Pilot was perfect in every way wheels up to wheels down communication, professionalism, excellent on time departure and on time arrival, excellent communication! Fantastic job with Superb attitude!!

The food is terrible. The staff is wonderful. Comfort is good.

Left on time, a bit delayed due to headwinds most of the trip.

I fly Delta all the time, have Platinum Medallion status. But this route seems to have major problems with delays and seems to never leave on time! Have only taken it twice in the last two weeks, and each time it had delays of more than 1 hour... very disappointed!!!!

Good seats in Main cabin, excellent service and excellent landing

My flight was cancelled with no explanation after I had already cleared security. I was given 4 options to rebook, only one being non-stop like I had paid for. I grabbed it. It was 4 plus hours later and then took off even later. Biggest complaint is that I booked early and had an aisle seat. They gave me a "window" seat in front of the exit row, so the seat did not decline. I weigh all of 103 #s and it was tight for me! For what I paid, I feel I was kind of ripped off. I think they should have given me the empty comfort seat for the inconvenience. There was no apology nor any explanation as to why the flight was cancelled. My guess is it benefitted Delta in some way.

Very smooth, on-time, and pleasantly uneventful flight. The team at the gate and on board were professional and genuinely courteous. The pilot kept us well updated throughout, and both takeoff and landing were steady and enjoyable without any drama. Just a good, solid flight. Thank you! 💗

Staff was exceptional! Everyone was kind, professional and friendly making the trip very pleasant. Thank you!

No lunch on a x-country flight scheduled for 10:50 am departure, arrived 5+ hrs later. That requires a black box label before you pay for the tickets. Worst, when I checked in online, it's specifically said that lunch was served on his flight for economy Plus passengers.

We had a lot of really rough weather but that was not Delta's fault. Pilot was amazing.

The food is terrible. The same pasta or chicken with bad taste and presentation

It was probably one of the worst flights I’ve been on. The restrooms were never cleaned or stocked. The food was very subpar, and i usually enjoy airline food, so I was disappointed. It was just all around a bad experience. The only saving grace was the flight attendants.

The only downside was my cell phone charger wouldn’t work in the charging port but everyone else’s would work in them all. My cell phone cable works fine in my hotel room in Frankfurt.

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

Great crew, excellent landing, good food. Over all great experience. Thank you!

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

Not pleasant trip cross country when the entertainment and WiFi system not working. No entertainment for entirety of route. Staff was rather nonchalant in that they dismissed the problem due to age of plane. It would have been nice to know this up front so I could have come prepared to read or download movies before boarding Coincidentally or not, there was a similar issue with the entertainment system on my previous flight I took on my fist leg of the trip. There are no seat TVs, so you must rely on the app when it works. United can do better. Also, what use it it to pay for boarding group 2 when half of the passengers are in the same line as you?

Crew was dismissive. Snacks and refills not offered. Poor business class experience. Bed not comfortable compared to Emirates or BA.

Flight was delayed for 5 hours because crew didn’t have enough time to rest - this seems like it could have been avoided with better scheduling. Food was not good.

IAD with the archaic people movers is just a place to be avoided.

Not clean and was told I would get a great seat and it was not great at all

Flight got delayed for 5 hours no good explanation was offered ;(

Horrible. I would never fly Frontier again. The booking process is tricky at best, but fraudulent in my opinion. Frontier customer service did nothing to rectify my purchase -- I ended up paying more than double what I could have gotten from other airlines and nearly triple what I thought I was buying from Frontier. Their booking practices are unfair to the consumer.

Delayed. Text notifications were slow. Not much information o what was happening. Boarding was slow and confusing. Wasn’t even offered water other flight. Had to ask. No entertainment at all. Felt like.a Greyhound bus.

When I wanted to check in 3 hours prior to boarding time, the employees mentioned “a little over an hour delay” so I waited for an hour then I went to go look for food in the terminal and most people from that flight were in the same area looking for food. Finally I decided after food to check to see if it’s anytime closer and now it’s 2 mins until boarding closes?! What are you kidding me? I didn’t receive anything via sms about boarding now nor via email or on the intercom. I luckily made it through, barely, and then there’s no room for my carry on mind you I’m in the very first row so I had to place my purse in one further row back and my carry on sections down. Not sure who pays for better seats to get your stuff placed all over the plane but that was the worst experience I’ve ever had flying with anyone.

Better than expected. Staff were friendly and nice on both flights.

There was no one at the counter to assist with our check in. The app didn’t work, so I arrived at the airport with time to check in and I couldn’t because no employees were there. When I finally got someone on the phone, it was inside the 60min rule and they said I could no longer check in and they could sell me another ticket. We had to scramble and pay an additional $800 for tickets and THEN AFTER (about 60 min from my original convo with customer service and 10min after original departure time) I had boarded my new flight, there was email saying my original flight from Frontier was delayed and leaving 2hr 50min later, but I STILL wouldn’t have been able to check in. Which means customer service should have been able to see it and let me check in because I was well within my check in time. When I call Frontier, they hang up on me. So their app didn’t work and they employees left and they take zero responsibility or assistance with their “customer service”

Terrible. Flight cancelled with no reasoning and no flights to rebook. Employees were useless and did nothing to help. Did not even know where to retrieve luggage from the cancelled flight. Flyers beware.

No fault of Frontier staff: plane was very late, reached Orlando at 1 am, took a while to get luggage. Weather, gov financial shutdown impact on TSA, air controllers seemed to have multiple flights backed up. Frontier staff seemed to cope as gracefully as possible. It did reassure me that I and my new hip could adapt to travel challenges. Food/entertainment were irrelevant to my trip.

Terrible. The canceled my entire flight when I requested a refund for a trip frontier canceled trip one way.

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

Information on your arrival and departure airports