What are the most reliable airlines from Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport?

Consider Sun Country Air (100%), Emirates (100%) or Austrian Airlines (88%) when booking your flight. These represent the most reliable airlines when flying from Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport.

What are the most popular airlines that fly from Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport?

Before booking your flight from Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport check out the most popular airlines for this route: American Airlines, Delta or Frontier.

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

Travelers have found that booking a Thursday departure is the best way to save up to 30% on the cost of booking your flights compared to booking on days of the week where this route is of high demand.

Most accurate provider : When it comes to deals on Washington, D.C. Dulles Intl Airport-Chicago O'Hare Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Dulles Intl Airport-Chicago O'Hare Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Chicago O'Hare Intl Airport flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Washington, D.C. Dulles Intl Airport-Chicago O'Hare Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Dulles Intl Airport-Chicago O'Hare Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Can I find deals for flights from Dulles Intl to O'Hare Intl that include hotel bookings?

Yes. In addition to deals on Dulles Intl to O'Hare Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Dulles Intl to O'Hare Intl?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to O'Hare Intl.

Can I find deals for business class flights from Dulles Intl to O'Hare Intl?

Yes. Cheapflights offers flight deals from Dulles Intl to O'Hare Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$89+ Flights from Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport

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Find cheap flights from Dulles Intl to O'Hare Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Chicago O'Hare Intl are usually found in August or September, booked 87 days in advance, depart on a Friday or Wednesday and return on a Friday

Cheap flight deals from Dulles Intl to O'Hare Intl

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$177 (United Airlines)
One-way from	$89 (United Airlines)
Popular in	March
Cheapest in	August
Average price	$395
Good round-trip deal	$300 or less
Good one-way deal	$161 or less

Provider with most accurate pricing for Washington, D.C. Dulles Intl-Chicago O'Hare Intl flight deals.

Search Deals

Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Chicago O'Hare Intl flights.

Search Deals

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

Search Deals

One-way flight from Washington, D.C. Dulles Intl to Chicago O'Hare Intl

Search Deals

Highest demand for flights based on searches. 7% potential increase in price ($28 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in March 2025

Search Deals

Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to Chicago O'Hare Intl.

Search Deals

Price to beat on a one-way flight from Washington, D.C. Dulles Intl to Chicago O'Hare Intl.

Search Deals

Find flight deals from Dulles Intl to O'Hare Intl

Cheapest flights from Dulles Intl to O'Hare Intl
Explore the most affordable flight options available from Dulles Intl to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 27, 2025.

Tue 5/61:20 pmIAD - ORD

Nonstop2h 14mUnited Airlines

Wed 5/71:29 pmORD - IAD

Nonstop2h 01mUnited Airlines

Deal found 3/25

$177

Fri 4/254:03 pmIAD - ORD

1 stop8h 05mFrontier

Mon 4/286:30 amORD - IAD

1 stop6h 52mFrontier

Deal found 3/26

$198

Thu 4/246:00 amIAD - ORD

1 stop4h 21mDelta

Mon 4/286:15 pmORD - IAD

1 stop3h 52mDelta

Deal found 3/25

$217

Tue 4/158:34 pmIAD - ORD

1 stop12h 11mMultiple Airlines

Thu 4/177:10 pmORD - IAD

1 stop15h 13mMultiple Airlines

Deal found 3/25

$225

Thu 5/1512:49 pmIAD - ORD

1 stop7h 20mSun Country Air

Thu 5/298:05 pmORD - IAD

1 stop14h 48mSun Country Air

Deal found 3/25

$255

Wed 5/75:02 amIAD - ORD

1 stop4h 59mAmerican Airlines

Sun 5/115:00 amORD - IAD

1 stop7h 22mAmerican Airlines

Deal found 3/26

$292

Best flights from Dulles Intl to O'Hare Intl
Discover carefully curated flight deals from Dulles Intl to O'Hare Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 27, 2025.

Wed 4/2312:55 pmIAD - ORD

Nonstop2h 15mUnited Airlines

Thu 4/245:59 pmORD - IAD

Nonstop2h 02mUnited Airlines

Deal found 3/26

$177

Mon 4/286:00 amIAD - ORD

1 stop4h 21mDelta

Tue 4/295:30 amORD - IAD

1 stop6h 31mDelta

Deal found 3/26

$197

Fri 4/254:03 pmIAD - ORD

1 stop8h 05mFrontier

Sun 4/277:12 pmORD - IAD

1 stop12h 06mFrontier

Deal found 3/26

$198

Tue 6/37:50 amIAD - ORD

1 stop7h 10mSouthwest

Wed 6/47:30 amORD - IAD

2 stops14h 05mSouthwest

Deal found 3/26

$246

Fri 4/184:44 pmIAD - ORD

1 stop8h 52mMultiple Airlines

Sun 4/207:05 pmORD - IAD

1 stop14h 38mMultiple Airlines

Deal found 3/26

$253

Sun 5/412:49 pmIAD - ORD

1 stop7h 20mSun Country Air

Thu 5/88:05 pmORD - IAD

1 stop15h 18mSun Country Air

Deal found 3/26

$265

Fri 5/95:02 amIAD - ORD

1 stop4h 59mAmerican Airlines

Sun 5/118:05 amORD - IAD

1 stop4h 17mAmerican Airlines

Deal found 3/26

$345

Last-minute flights from Dulles Intl to O'Hare Intl
Discover last-minute flight deals from Dulles Intl to O'Hare Intl. Data last updated March 27, 2025 and is based on user searches.

Thu 4/35:40 pmIAD - ORD

3 stops31h 19mMultiple Airlines

Sun 4/67:00 amORD - IAD

1 stop27h 07mMultiple Airlines

Deal found 3/25

$405

Fri 4/45:45 pmIAD - ORD

1 stop15h 20mUnited Airlines

Sat 4/511:15 amORD - IAD

Nonstop1h 56mUnited Airlines

Deal found 3/25

$269

Sat 4/511:11 amIAD - ORD

1 stop9h 54mFrontier

Fri 4/119:54 amORD - IAD

1 stop6h 11mFrontier

Deal found 3/25

$198

Sat 4/56:00 amIAD - ORD

1 stop4h 12mDelta

Mon 4/76:15 amORD - IAD

1 stop5h 38mDelta

Deal found 3/26

$327

Sat 4/52:12 pmIAD - ORD

1 stop6h 17mAmerican Airlines

Mon 4/74:45 pmORD - IAD

1 stop6h 11mAmerican Airlines

Deal found 3/24

$469

Tue 4/158:34 pmIAD - ORD

1 stop12h 11mMultiple Airlines

Thu 4/177:10 pmORD - IAD

1 stop15h 13mMultiple Airlines

Deal found 3/25

$225

Tue 4/223:30 pmIAD - ORD

Nonstop2h 14mUnited Airlines

Tue 4/299:05 pmORD - IAD

Nonstop1h 54mUnited Airlines

Deal found 3/25

$177

Thu 4/246:00 amIAD - ORD

1 stop4h 21mDelta

Mon 4/286:15 pmORD - IAD

1 stop3h 52mDelta

Deal found 3/25

$217

Fri 4/254:03 pmIAD - ORD

1 stop8h 05mFrontier

Mon 4/286:30 amORD - IAD

1 stop6h 52mFrontier

Deal found 3/26

$198

One-way flights from Dulles Intl to O'Hare Intl
Search for one-way flight options from Dulles Intl to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated March 27, 2025.

Thu 5/296:48 amIAD - ORD

Nonstop2h 14mUnited Airlines

Deal found 3/26

$89

Thu 5/85:26 pmIAD - ORD

1 stop7h 06mFrontier

Deal found 3/26

$98

Thu 6/1212:40 pmIAD - ORD

1 stop7h 31mSun Country Air

Deal found 3/26

$111

Sat 4/266:00 amIAD - ORD

1 stop5h 03mDelta

Deal found 3/26

$119

Mon 5/198:02 pmIAD - ORD

1 stop5h 09mAmerican Airlines

Deal found 3/26

$134

Tue 4/298:25 amIAD - ORD

3 stops23h 38mMultiple Airlines

Deal found 3/26

$136

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Chicago

IAD - ORD

IADORD

Washington, D.C. Dulles Intl

Tue 5/6

1:20 pm-2:34 pm

Nonstop2h 14m

Chicago O'Hare Intl

Wed 5/7

1:29 pm-4:30 pm

Nonstop2h 01m

$177

Washington, D.C.Chicago

IAD - ORD

IADORD

Washington, D.C. Dulles Intl

Wed 5/7

6:00 am-9:51 am

1 stop4h 51m

Chicago O'Hare Intl

Wed 5/7

5:15 pm-10:54 pm

1 stop4h 39m

$197

Washington, D.C.Chicago

IAD - ORD

IADORD

Washington, D.C. Dulles Intl

Fri 4/25

4:03 pm-11:08 pm

1 stop8h 05m

Chicago O'Hare Intl

Mon 4/28

6:30 am-2:22 pm

1 stop6h 52m

$198

Washington, D.C.Chicago

IAD - ORD

IADORD

Washington, D.C. Dulles Intl

Tue 4/15

8:34 pm-7:45 am

1 stop12h 11m

Chicago O'Hare Intl

Thu 4/17

7:10 pm-11:23 am

1 stop15h 13m

$225

Washington, D.C.Chicago

IAD - ORD

IADORD

Washington, D.C. Dulles Intl

Thu 5/15

12:49 pm-7:09 pm

1 stop7h 20m

Chicago O'Hare Intl

Thu 5/29

8:05 pm-11:53 am

1 stop14h 48m

$255

Washington, D.C.Chicago

IAD - ORD

IADORD

Washington, D.C. Dulles Intl

Wed 5/7

5:02 am-10:41 am

1 stop6h 39m

Chicago O'Hare Intl

Sun 5/11

7:00 am-1:22 pm

1 stop5h 22m

$292

Washington, D.C.Chicago

IAD - ORD

IADORD

Washington, D.C. Dulles Intl

Tue 5/6

8:30 am-9:44 am

Nonstop2h 14m

$89

Washington, D.C.Chicago

IAD - ORD

IADORD

Washington, D.C. Dulles Intl

Fri 4/25

4:03 pm-11:08 pm

1 stop8h 05m

$97

Washington, D.C.Chicago

IAD - ORD

IADORD

Washington, D.C. Dulles Intl

Mon 4/21

6:00 am-9:21 am

1 stop4h 21m

$99

Washington, D.C.Chicago

IAD - ORD

IADORD

Washington, D.C. Dulles Intl

Thu 5/22

12:49 pm-5:21 pm

1 stop5h 32m

$111

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/25

Showing 1-10 of 12 results

Compare providers for flights from Dulles Intl to O'Hare Intl

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dulles Intl to O'Hare Intl in March.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Priceline	Price Accuracy1 star	Trust Score*3 stars
CheapTicketsDeal	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Chicago O'Hare Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Dulles Intl Airport-Chicago O'Hare Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Chicago O'Hare Intl Airport flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Chicago O'Hare Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Dulles Intl Airport-Chicago O'Hare Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

The best insider tips for Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport flights

Cheapflights partnered with top experts to bring you the best recommendations for your Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport trip

Airports

IAD

Check-in at IAD can be crowded in the afternoon and evening. Arrive early to navigate the busy check-in area smoothly.

ORD

For a quick city transfer, take the 'L' train from ORD to downtown Chicago, avoiding traffic delays common with taxis and rideshares.

Our travel experts

Ramsey Qubein

Expert on ORD and IAD

Best time to book a flight from Dulles Intl to O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from Dulles Intl with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport

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

The price you pay for your flight from Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 87 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, August is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport (average of $245). Flying from Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport in March is currently the most expensive (average of $323). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IAD to ORD?

It’s optimal to fly from Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport in the evening. By choosing this option you can save up to 45% on the cost of your flight, compared to a flight in the afternoon.

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

Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport flight should consider departing on Wednesday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in O'Hare Intl by month

In terms of precipitation, rainfall in Chicago O'Hare Intl Airport ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Chicago O'Hare Intl Airport when rainfall is around 1.7 in.

Temperature in O'Hare Intl by month

If weather is an important factor for your trip to Chicago O'Hare Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing O'Hare Intl

Peruse reviews from past customers who have flown with Southwest, Delta and United Airlines from Washington, D.C. to Chicago to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.1

Very good

4,273 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Southwest

8.1

Very good

4,273 reviews

Southwest

8.1

Very good

4,273 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Delta

8.0

Very good

7,895 reviews

Southwest

8.1

Very good

4,273 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

United Airlines

7.4

Good

8,603 reviews

Southwest

8.1

Very good

4,273 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

American Airlines

7.2

Good

10,000 reviews

Southwest

8.1

Very good

4,273 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Sun Country Air

6.9

Okay

348 reviews

Southwest

8.1

Very good

4,273 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Related info for your journey

What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport round-trip?
United Airlines, at $177, was found to be the cheapest airline from Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport.Alternate airlines to your destination round-trip include Delta and Frontier. United Airlines is 47% cheaper than the average price of flights available within the next 90 days to this destination.
What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport one-way?
The cheapest airlines for a one-way flight from Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport are United Airlines ($89), Frontier ($98), and Sun Country Air ($111).
What are the most reliable airlines from Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport?
Consider Sun Country Air (100%), Emirates (100%) or Austrian Airlines (88%) when booking your flight. These represent the most reliable airlines when flying from Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport.
What are the cheapest flights from Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport?
While on average a flight from Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport is generally $1,800, our data shows the cheapest flight currently is $114. When looking at the most popular route, (Washington, D.C. Dulles Intl - Chicago O'Hare Intl), you can expect to pay $177 for that flight.
Can I find deals for flights from Dulles Intl to O'Hare Intl that include hotel bookings?
Yes. In addition to deals on Dulles Intl to O'Hare Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Dulles Intl to O'Hare Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to O'Hare Intl.
Can I find deals for business class flights from Dulles Intl to O'Hare Intl?
Yes. Cheapflights offers flight deals from Dulles Intl to O'Hare Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport?
Currently, August is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport (average of $245). Flying from Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport in March is currently the most expensive (average of $323). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Top 4 airlines flying from Dulles Intl to O'Hare Intl

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$63	Average$118	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$176	Average$217	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$188	Average$338	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$364	Average$402	FlexibilityNo cancel fee	On-time71%

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$89+ Cheap flights from Dulles Intl (IAD) to O'Hare Intl (ORD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/6. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Dulles Intl to O'Hare Intl with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Chicago O'Hare Intl are usually found in August or September, booked 87 days in advance, depart on a Friday or Wednesday and return on a Friday

Cheap flight deals from Dulles Intl to O'Hare Intl

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Dulles Intl to O'Hare Intl

Cheapest flights from Dulles Intl to O'Hare IntlExplore the most affordable flight options available from Dulles Intl to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 27, 2025.

Explore the most affordable flight options available from Dulles Intl to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 27, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport that are best for you.

Compare providers for flights from Dulles Intl to O'Hare Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dulles Intl to O'Hare Intl in March.

The best insider tips for Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport flights

Cheapflights partnered with top experts to bring you the best recommendations for your Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport trip

Airports

IAD

ORD

Our travel experts

Best time to book a flight from Dulles Intl to O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from Dulles Intl with our price prediction graph.

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Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport

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

Use this chart to determine the optimal time to book a round-trip flight from Dulles Intl to O'Hare Intl. Price data was last updated on March 21, 2025.

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

What is the cheapest time of day to fly from IAD to ORD?

Find hourly flight availability from Dulles Intl to O'Hare Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 27, 2025.

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

Use this chart to determine the cheapest time to fly round-trip from Dulles Intl to O'Hare Intl. Price data was last updated on March 23, 2025.

Rainfall in O'Hare Intl by month

Plan your trip to O'Hare Intl by taking into account the average rainfall totals by month.

Temperature in O'Hare Intl by month

Plan your trip to O'Hare Intl by taking into account the average temperature totals by month.

Reviews of airlines servicing O'Hare Intl

Peruse reviews from past customers who have flown with Southwest, Delta and United Airlines from Washington, D.C. to Chicago to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to O'Hare Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport round-trip?

What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport one-way?

What are the most reliable airlines from Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport?

What are the cheapest flights from Washington, D.C. Dulles Intl Airport to Chicago O'Hare Intl Airport?

Can I find deals for flights from Dulles Intl to O'Hare Intl that include hotel bookings?

How can I find direct flights from Dulles Intl to O'Hare Intl?

Can I find deals for business class flights from Dulles Intl to O'Hare Intl?

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

Traveling to a place near Washington, D.C. Dulles Intl Airport?

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Alternative routes for Dulles Intl to O'Hare Intl

See prices for flight routes from nearby airports that may be better suited for you.

Top 4 airlines flying from Dulles Intl to O'Hare Intl

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Cheapest flights from Dulles Intl to O'Hare Intl
Explore the most affordable flight options available from Dulles Intl to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 27, 2025.