ORD - IAD

$70 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 3/4. 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 23% 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
$149
Overall average: $325
Frontier
Thu 3/5Mon 3/9
ORD - IAD • 1 stop
Cheapest non-stop
$184
Typical prices: $267-$516
United Airlines
Sat 2/28Mon 3/2
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
Top airlines
Frontier
Cheapest • from $149 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 53% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
May
Cheapest • 14% 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, Mar 5 - Mon, Mar 9
Frontier Logo
5:05 am - 4:43 pm
ORD
-
IAD
10h 38m
1 stop
Frontier Logo
6:20 am - 10:39 pm
IAD
-
ORD
17h 19m
1 stop
$149Frontier
Fri, Mar 6 - Tue, Mar 10
Frontier Logo
4:44 pm - 12:31 am
ORD
-
IAD
6h 47m
1 stop
Frontier Logo
7:00 am - 6:41 pm
IAD
-
ORD
12h 41m
1 stop
$152Frontier
Tue, Mar 10 - Tue, Mar 17
Multiple Airlines Logo
9:28 am - 12:31 am
ORD
-
IAD
14h 03m
1 stop
Multiple Airlines Logo
7:00 am - 12:22 am
IAD
-
ORD
18h 22m
2 stops
$153Multiple Airlines
Thu, Feb 26 - Mon, Mar 2
Frontier Logo
5:05 am - 4:43 pm
ORD
-
IAD
10h 38m
1 stop
Frontier Logo
5:22 pm - 10:39 pm
IAD
-
ORD
6h 17m
1 stop
$154Frontier
Mon, Mar 9 - Wed, Mar 11
Frontier Logo
4:44 pm - 12:31 am
ORD
-
IAD
6h 47m
1 stop
Frontier Logo
6:20 am - 5:57 pm
IAD
-
ORD
12h 37m
1 stop
$155Frontier
Thu, Apr 16 - Sat, Apr 18
Multiple Airlines Logo
3:10 pm - 12:36 am
ORD
-
IAD
8h 26m
1 stop
Multiple Airlines Logo
7:05 am - 2:15 pm
IAD
-
ORD
8h 10m
1 stop
$156Multiple Airlines
Fri, Apr 10 - Mon, Apr 13
Frontier Logo
4:34 pm - 12:36 am
ORD
-
IAD
7h 02m
1 stop
Frontier Logo
12:55 pm - 11:36 pm
IAD
-
ORD
11h 41m
1 stop
$160Frontier
Thu, Feb 26 - Mon, Mar 2
Frontier Logo
5:05 am - 4:43 pm
ORD
-
IAD
10h 38m
1 stop
Frontier Logo
11:41 am - 10:39 pm
IAD
-
ORD
11h 58m
1 stop
$161Frontier
Thu, Feb 26 - Mon, Mar 2
Frontier Logo
5:05 am - 4:43 pm
ORD
-
IAD
10h 38m
1 stop
Frontier Logo
11:41 am - 10:39 pm
IAD
-
ORD
11h 58m
1 stop
$162Frontier
Thu, Mar 12 - Sun, Mar 15
Frontier Logo
4:28 pm - 12:31 am
ORD
-
IAD
7h 03m
1 stop
Frontier Logo
6:20 am - 10:39 pm
IAD
-
ORD
17h 19m
1 stop
$164Frontier
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 May, where tickets cost $274 (return) on average. On the other hand, the most expensive months are February and November, where the average cost of round-trip tickets is $426 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.

No, with an average price for the route of $359, 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 53% 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.
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 seasonJanuary
Cheapest flight$70
Best time to beat the crowds but there is an average 6% increase in price.
Most popular time to fly with an average 1% increase in price.
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 $70 for a one-way ticket and $149 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?

    Finnair, American Airlines, British Airways, and Iberia 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 787 Dreamliner 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 $324 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 $200 and an overall rating of 5.7.

  • 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 $264 or less one-way and $534 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 9273 reviews
7.3Comfort
8.1Crew
7.1Entertainment
7.7Boarding
6.6Food
Airline reviews

Crew was great. 2 1/2 hour delay was due to staff needing "rest" was avoidable and self inflicted as United not willing to hire enough crew to keep flight on time.. Ridiculous. The crew and the passengers both suffered due to this.

6.0 GoodJames, Feb 2026
HND - IAD
Read more United Airlines reviews

Crew was great. 2 1/2 hour delay was due to staff needing "rest" was avoidable and self inflicted as United not willing to hire enough crew to keep flight on time.. Ridiculous. The crew and the passengers both suffered due to this.

Fine not above and beyond as I had a connection that was delayed due to maintenance

Bad food, bad service, cold cabin with no additional blankets when asked for (they told me they don’t provide additional blankets). I’m a frequent traveler and this is one of the worst companies I traveled with (by the way I thought that I booked my ticket with Lufthansa but I didn’t see that the flights were handled by United).

Great other than a couple very drunk guys that for a while kept bumping my seat from behind. The staff did their best to control them. Even refused serving them alcohol and allowed the gal sitting next to them to move.

Good crew. Boarding delays. Almost two hours wait for the bags in DC.

Unfortunately weather delayed our flight waiting for our plane to arrive and due to a little snow time was needed to deice the plane so departure was very delayed and I missed the connecting flight

It was great. There were some issues prior to takeoff. The weather was poor so we had to go through deicing, and we were delayed a bit by the pilots' concern about one of the engines, but that's aviation. The pilots handled everything with aplomb, and kept us apprised

The seats were comfortable and we had leg room. Great entertainment.

The flight crew where really good. Better then the crew from BNE to SFO

Safe made to destination. Late to start at GVA for icy reasons but we fought our next fly.

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.

Very well recently! Frontier is improving and less harrassing customer on luggages! Positive!

Good for a budget airline! It was easy to get on, staff was really nice. Can’t say anything about the food or entertainment because it wasn’t available, which is fine.

I am writing to express my disappointment with my recent Frontier Airlines flight. I was charged $99 at the gate because my bag was said to be too large, yet once onboard there was no available overhead bin space, and I was required to place the bag under the seat in front of me anyway. This made the charge feel unnecessary and unfair. Additionally, before the flight even took off, I was asked to move from the seat I paid for into a middle seat so another passenger and her cat could have my seat to themselves. I was not offered compensation or an explanation for being moved from a paid seat. Between the unexpected bag fee and being forced to give up my seat, this experience fell well below acceptable customer service standards. I would appreciate a review of this situation and appropriate compensation.

It was costly and difficult to check in. $85 to take a small suitcase with me, carry on or checked and $75 on the return trip, Plus $25 if I didn't check my self in check in $25, because I couldn't do it on the kiosk. Small very uncomfortable seats, waited on the runway for near an hour each way. It was my worst flight to date.

It was ok. It was expensive to check 2 bags ($75.00 per bag), and then it took a long time to wait for shuttle to take us from one terminal to the terminal where the plane was taking off at LAX. And all of this for a flight where we had to pay for any food or drink that was not water.

It didn’t happen. I booked it and then was told it wasn’t available and then forced to pay far higher prices for a worse option

A 630departure flight Delayed 6hours! They changed my gate, I moved to the new gate. Had our flight on the screen for 12noon departure. I go get above to eat, check screen again and the flight was gone, no notice no announcement, nothing!! They sent my bag on the flight I wasn’t on, got it back to me 3days later. Thank goodness they did refund my money but I will NEVER fly them again.

Due to weather, my flight was delayed, further delayed, then canceled. I eventually got through to a support person who helped me find a different route out of MSP, but to get to DIA, they didn't want to, but eventually did help with the connection ticket purchase. But even this replacement flight was delayed time and time again, and I would have missed my connecting flights and I didn't want to get stuck in a layover city, so after 12 hours at the airport with two young boys who were very tired, we just cancelled our plans and spent the week at home, instead of Nana's.

Plane and crew on board were fine. Everything else was terrible.

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

Information on your arrival and departure airports