IAD - ORD

$89 Find Cheap Flights from Washington Dulles Airport to Chicago O'Hare Airport - Compare and Save

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 10/2. 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

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Everything you should know

Cheapest round-trip
$184
Typical prices: $231-$382
Frontier
Fri 9/4Mon 9/7
IAD - ORD • 1 stop
Cheapest non-stop
$184
Typical prices: $275-$446
United Airlines
Wed 10/28Fri 10/30
IAD - ORD • Non-stop
Nonstop flights
Every day
You can fly direct with United Airlines. Average duration is 2h 16m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top layover airports
Atlanta (ATL)
Cheapest • Avg $232 (round-trip)
Detroit (DTW)
Shortest trip • 4h 05m (one-way)
Insights
Insights
Insights
Insights
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
September
Cheapest • 26% price drop
May
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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Flight Deals
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Expert advice
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

Fri, Sep 4 - Mon, Sep 7
Frontier Logo
9:54 pm - 11:08 pmIAD  Washington, D.C. Dulles Intl-ORD Chicago O'Hare Intl
26h 14m1 stop Orlando
Frontier Logo
9:10 pm - 10:07 amORD  Chicago O'Hare Intl-IAD Washington, D.C. Dulles Intl
11h 57m1 stop Orlando
$184Frontier
Sat, Sep 5 - Tue, Sep 8
Frontier Logo
8:39 pm - 7:53 amIAD  Washington, D.C. Dulles Intl-ORD Chicago O'Hare Intl
12h 14m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
8:05 am - 7:44 pmORD  Chicago O'Hare Intl-IAD Washington, D.C. Dulles Intl
10h 39m1 stop Fort Lauderdale
$184Frontier
Wed, Oct 28 - Fri, Oct 30
United Airlines Logo
6:11 am - 7:30 amIAD  Washington, D.C. Dulles Intl-ORD Chicago O'Hare Intl
2h 19mnonstop
United Airlines Logo
6:07 pm - 9:10 pmORD  Chicago O'Hare Intl-IAD Washington, D.C. Dulles Intl
2h 03mnonstop
$184United Airlines
Wed, Oct 28 - Fri, Oct 30
United Airlines Logo
6:11 am - 7:30 amIAD  Washington, D.C. Dulles Intl-ORD Chicago O'Hare Intl
2h 19mnonstop
United Airlines Logo
1:15 pm - 4:18 pmORD  Chicago O'Hare Intl-IAD Washington, D.C. Dulles Intl
2h 03mnonstop
$184United Airlines
Fri, Oct 30 - Tue, Nov 3
United Airlines Logo
10:25 pm - 11:39 pmIAD  Washington, D.C. Dulles Intl-ORD Chicago O'Hare Intl
2h 14mnonstop
United Airlines Logo
6:04 am - 8:58 amORD  Chicago O'Hare Intl-IAD Washington, D.C. Dulles Intl
1h 54mnonstop
$184United Airlines
Sun, Sep 6 - Fri, Sep 11
Frontier Logo
8:39 pm - 7:53 amIAD  Washington, D.C. Dulles Intl-ORD Chicago O'Hare Intl
12h 14m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
8:55 am - 4:30 pmORD  Chicago O'Hare Intl-IAD Washington, D.C. Dulles Intl
6h 35m1 stop Detroit Metropolitan Wayne County
$185Frontier
Fri, Sep 4 - Mon, Sep 7
Frontier Logo
9:54 pm - 11:08 pmIAD  Washington, D.C. Dulles Intl-ORD Chicago O'Hare Intl
26h 14m1 stop Orlando
Frontier Logo
8:11 pm - 5:01 amORD  Chicago O'Hare Intl-IAD Washington, D.C. Dulles Intl
31h 50m1 stop Las Vegas Harry Reid Intl
$185Frontier
Tue, Sep 15 - Sat, Sep 26
Multiple Airlines Logo
9:04 pm - 11:51 amIAD  Washington, D.C. Dulles Intl-ORD Chicago O'Hare Intl
15h 47m1 stop Atlanta Hartsfield-Jackson
Multiple Airlines Logo
7:11 am - 6:33 pmORD  Chicago O'Hare Intl-IAD Washington, D.C. Dulles Intl
10h 22m2 stops Fort Lauderdale Tampa
$194Multiple Airlines
Thu, Sep 10 - Tue, Sep 15
Delta Logo
11:10 am - 4:13 pmIAD  Washington, D.C. Dulles Intl-ORD Chicago O'Hare Intl
6h 03m1 stop Detroit Metropolitan Wayne County
Delta Logo
5:10 pm - 11:14 pmORD  Chicago O'Hare Intl-IAD Washington, D.C. Dulles Intl
5h 04m1 stop Detroit Metropolitan Wayne County
$197Delta
Wed, Dec 30 - Thu, Dec 31
Delta Logo
6:00 am - 11:06 amIAD  Washington, D.C. Dulles Intl-ORD Chicago O'Hare Intl
6h 06m1 stop Atlanta Hartsfield-Jackson
Delta Logo
5:30 am - 11:59 amORD  Chicago O'Hare Intl-IAD Washington, D.C. Dulles Intl
5h 29m1 stop Atlanta Hartsfield-Jackson
$197Delta
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?

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

Flight prices are below average for this route right now.

Flights to Chicago O'Hare Intl Airport from Washington, D.C. Dulles Intl Airport usually cost between $277 and $462 in September.
The lowest price found in the past 5 days was $184 on United Airlines (Sep 11-Sep 14).

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 Thursdays 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 Tuesday 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 September, where tickets cost $297 (return) on average. On the other hand, the most expensive months are March and June, where the average cost of round-trip tickets is $488 and $488 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.

No, with an average price for the route of $354, prices are generally cheapest when you fly direct.

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.

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Expert advice

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

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Good to know

Low season

February

Cheapest flight

$89
Best time to beat the crowds but there is an average 3% increase in price.
Most popular time to fly and prices are also 7% 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 5 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport was $89 for a one-way ticket and $184 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, Alaska Airlines, Delta, and JetBlue 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 $403 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 $239 and an overall rating of 5.6.

  • 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 $257 or less one-way and $351 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

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

Information on your arrival and departure airports

Washington Dulles Airport (IAD)
O'Hare Intl (ORD)