Which layover airport has the shortest connection time from Chicago to Washington, D.C. Dulles Intl Airport?

Detroit (DTW) has the shortest average layover time for this route: 1h 20m.

Which airport is the most popular layover for flights between Chicago and Washington, D.C. Dulles Intl Airport?

Atlanta (ATL) was the most common stop: 57% of momondo users choosing 1-stop flights on this route connected there.

How many flights depart from Chicago to Washington, D.C. Dulles Intl Airport on average per day?

As of September 2025, there are 27 flights per day flying from Chicago to Washington, D.C. Dulles Intl Airport. The most common time of day flights depart is 8:00AM, with 47% of flights taking off at noon.

What airlines fly to Washington, D.C. Dulles Intl Airport?

United Airlines, Frontier and Delta are the top three most popular airlines that fly to Washington, D.C. Dulles Intl Airport from Chicago according to our data. United Airlines is the first choice among our users, with 87% of people opting to fly with this airline when traveling to Washington, D.C. Dulles Intl Airport. Keep in mind that there are 3 different airlines that fly to Washington, D.C. Dulles Intl Airport on a routine basis, so you have a few additional options to choose from.

Which layover airport has the shortest travel time from Chicago to Washington, D.C. Dulles Intl Airport?

Flights connecting via Detroit (DTW) have the shortest average one-way travel time: 4h 40m.

Which layover airport offers the lowest fares from Chicago to Washington, D.C. Dulles Intl Airport?

Flights via Orlando (MCO) offer the lowest average round-trip price of $148.

What is the cheapest airline that flies from Chicago to Washington, D.C. Dulles Intl?

Frontier, Avelo Airlines, and United Airlines are the most popular carriers operating from Chicago to Washington, D.C. Dulles Intl

How many operators does momondo search for flights from Chicago to Washington, D.C. Dulles Intl Airport?

The number of operators available for flights from Chicago to Washington, D.C. Dulles Intl Airport is 3 as of September 2025.

How old do you have to be to fly from Chicago to Washington, D.C. Dulles Intl Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago to Washington, D.C. Dulles Intl Airport.

What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

The travel and health documents you'll need for your trip to Washington, D.C. Dulles Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington, D.C. Dulles Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$78 Cheap Flights from Chicago to Washington, D.C. Dulles Intl Airport in 2025/26

Q: How many flights depart from Chicago to Washington, D.C. Dulles Intl Airport on average per week?

As of September 2025, 195 flights take off from Chicago and land in Washington, D.C. Dulles Intl Airport each week. The most common flight departure day for this route is Mon, with 17% of weekly flights taking off on this day.

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One-way

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Direct

Cheap round-trip flights

5:15 pm - 11:39 pmMDW-IAD

5h 24m1 stop

9:00 am - 1:38 pmIAD-MDW

5h 38m1 stop

$143Frontier

Find Deal

Fri, Oct 3 - Tue, Oct 7

6:00 am - 3:26 pmORD-IAD

8h 26m1 stop

4:45 pm - 11:39 pmIAD-ORD

7h 54m1 stop

$143Frontier

Find Deal

Sat, Oct 18 - Mon, Oct 20

11:31 am - 8:53 pmMDW-IAD

8h 22m1 stop

4:45 pm - 11:46 pmIAD-MDW

8h 01m1 stop

$144Frontier

Find Deal

Sat, Oct 18 - Mon, Oct 20

9:24 am - 7:07 pmORD-IAD

8h 43m1 stop

5:00 pm - 11:39 pmIAD-ORD

7h 39m1 stop

$144Frontier

Find Deal

Thu, Oct 23 - Mon, Oct 27

8:05 am - 7:46 pmMDW-IAD

10h 41m1 stop

3:10 pm - 9:33 amIAD-MDW

19h 23m1 stop

$145Frontier

Find Deal

Wed, Oct 15 - Sun, Oct 19

7:43 pm - 7:07 pmORD-IAD

22h 24m2 stops

9:00 am - 1:47 pmIAD-ORD

5h 47m1 stop

$192Multiple Airlines

Find Deal

Wed, Oct 8 - Tue, Oct 14

11:24 am - 11:29 pmORD-IAD

11h 05m1 stop

5:00 am - 12:59 pmIAD-ORD

8h 59m2 stops

$214Multiple Airlines

Find Deal

Fri, Oct 31 - Sun, Nov 2

7:00 am - 4:28 pmORD-IAD

8h 28m1 stop

6:50 pm - 7:58 pmIAD-ORD

2h 08mnonstop

$227United Airlines

Find Deal

Tue, Oct 7 - Tue, Oct 7

1:05 pm - 6:42 pmMDW-IAD

4h 37m1 stop

6:10 am - 8:50 amIAD-MDW

3h 40m1 stop

$257Delta

Find Deal

Wed, Feb 18 - Wed, Feb 25

6:35 pm - 11:01 pmMDW-IAD

3h 26m1 stop

6:18 am - 1:08 pmIAD-MDW

7h 50m1 stop

$267Delta

Find Deal

Fri, Oct 31 - Tue, Nov 4

Frontier flights from Chicago to Washington, D.C. Dulles Intl Airport

Our best Frontier deals on Chicago to Washington, D.C. Dulles Intl Airport flight tickets

Frontier

Oct 18

ORD6:00 amChicago O'Hare Intl

8h 26m

1 stop

IAD3:26 pmWashington, D.C. Dulles Intl

Oct 20

IAD4:45 pmWashington, D.C. Dulles Intl

7h 54m

1 stop

ORD11:39 pmChicago O'Hare Intl

$143

Find similar

Frontier

Oct 18

MDW11:31 amChicago Midway

8h 22m

1 stop

IAD8:53 pmWashington, D.C. Dulles Intl

Oct 20

IAD4:45 pmWashington, D.C. Dulles Intl

8h 01m

1 stop

MDW11:46 pmChicago Midway

$144

Find similar

Frontier

Nov 6

ORD3:18 pmChicago O'Hare Intl

7h 53m

1 stop

IAD12:11 amWashington, D.C. Dulles Intl

Nov 7

IAD5:34 pmWashington, D.C. Dulles Intl

7h 37m

1 stop

ORD12:11 amChicago O'Hare Intl

$145

Find similar

Delta flights from Chicago to Washington, D.C. Dulles Intl Airport

Our best Delta deals on Chicago to Washington, D.C. Dulles Intl Airport flight tickets

Delta

Feb 18

MDW1:05 pmChicago Midway

4h 37m

1 stop

IAD6:42 pmWashington, D.C. Dulles Intl

Feb 25

IAD6:10 amWashington, D.C. Dulles Intl

3h 40m

1 stop

MDW8:50 amChicago Midway

$257

Find similar

Delta

Oct 31

MDW6:35 pmChicago Midway

3h 26m

1 stop

IAD11:01 pmWashington, D.C. Dulles Intl

Nov 4

IAD6:18 amWashington, D.C. Dulles Intl

7h 50m

1 stop

MDW1:08 pmChicago Midway

$267

Find similar

Delta

Oct 1

MDW10:35 amChicago Midway

7h 04m

1 stop

IAD6:39 pmWashington, D.C. Dulles Intl

Oct 4

IAD9:00 amWashington, D.C. Dulles Intl

7h 26m

1 stop

MDW3:26 pmChicago Midway

$367

Find similar

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

ChicagoWashington, D.C.

MDW - IAD

MDWIAD

Chicago Midway

Fri 10/3

5:15 pm-11:39 pm

1 stop5h 24m

Washington, D.C. Dulles Intl

Tue 10/7

9:00 am-1:38 pm

1 stop5h 38m

$143

ChicagoWashington, D.C.

ORD - IAD

ORDIAD

Chicago O'Hare Intl

Sat 10/18

6:00 am-3:26 pm

1 stop8h 26m

Washington, D.C. Dulles Intl

Mon 10/20

4:45 pm-11:39 pm

1 stop7h 54m

$143

ChicagoWashington, D.C.

MDW - IAD

MDWIAD

Chicago Midway

Sat 10/18

11:31 am-8:53 pm

1 stop8h 22m

Washington, D.C. Dulles Intl

Mon 10/20

4:45 pm-11:46 pm

1 stop8h 01m

$144

ChicagoWashington, D.C.

ORD - IAD

ORDIAD

Chicago O'Hare Intl

Thu 10/23

9:24 am-7:07 pm

1 stop8h 43m

Washington, D.C. Dulles Intl

Mon 10/27

5:00 pm-11:39 pm

1 stop7h 39m

$144

ChicagoWashington, D.C.

MDW - IAD

MDWIAD

Chicago Midway

Wed 10/15

8:05 am-7:46 pm

1 stop10h 41m

Washington, D.C. Dulles Intl

Sun 10/19

3:10 pm-9:33 am

1 stop19h 23m

$145

ChicagoWashington, D.C.

ORD - IAD

ORDIAD

Chicago O'Hare Intl

Wed 10/8

7:43 pm-7:07 pm

2 stops22h 24m

Washington, D.C. Dulles Intl

Tue 10/14

9:00 am-1:47 pm

1 stop5h 47m

$192

ChicagoWashington, D.C.

ORD - IAD

ORDIAD

Chicago O'Hare Intl

Fri 10/31

11:24 am-11:29 pm

1 stop11h 05m

Washington, D.C. Dulles Intl

Sun 11/2

5:00 am-12:59 pm

2 stops8h 59m

$214

ChicagoWashington, D.C.

ORD - IAD

ORDIAD

Chicago O'Hare Intl

Tue 10/7

7:00 am-4:28 pm

1 stop8h 28m

Washington, D.C. Dulles Intl

Tue 10/7

6:50 pm-7:58 pm

Nonstop2h 08m

$227

ChicagoWashington, D.C.

MDW - IAD

MDWIAD

Chicago Midway

Wed 2/18

1:05 pm-6:42 pm

1 stop4h 37m

Washington, D.C. Dulles Intl

Wed 2/25

6:10 am-8:50 am

1 stop3h 40m

$257

ChicagoWashington, D.C.

MDW - IAD

MDWIAD

Chicago Midway

Fri 10/31

6:35 pm-11:01 pm

1 stop3h 26m

Washington, D.C. Dulles Intl

Tue 11/4

6:18 am-1:08 pm

1 stop7h 50m

$267

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How to get the cheapest flight ticket from Chicago to Washington, D.C. Dulles Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Layovers

Other information

What is the cheapest month to fly to Washington, D.C. Dulles Intl Airport?

In general, August is the cheapest month to fly from Chicago to Washington, D.C. Dulles Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $229. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of August, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $272.

What is the cheapest day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Our data shows that Friday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $555. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Chicago to Washington, D.C. Dulles Intl Airport for around $775.

What is the cheapest time of day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Flying to Washington, D.C. Dulles Intl Airport from Chicago in the morning is the least expensive time of day to depart. momondo users have found prices as low as $457 when looking at flights departing in the morning. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $995 on average. Flights to Washington, D.C. Dulles Intl Airport from Chicago at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Chicago to Washington, D.C. Dulles Intl flight route?

Fly from Chicago O'Hare Intl to Washington, D.C. Dulles Intl for the best Chicago - Washington, D.C. Dulles Intl flight prices

How far in advance should I book a flight to Washington, D.C. Dulles Intl Airport?

You are more likely to see cheaper flights to Washington, D.C. Dulles Intl Airport from Chicago when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Dulles Intl Airport for around $307 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Dulles Intl Airport from Chicago for as low as $247 on momondo.

What cabin class options are available on Chicago to Washington, D.C. Dulles Intl flights?

There are 4 cabin classes available to choose from on Chicago to Washington, D.C. Dulles Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Chicago to Washington, D.C. Dulles Intl Airport flight prices changed over time?

As of September 2025, prices for Chicago to Washington, D.C. Dulles Intl Airport flights are approximately 61% more expensive when compared to flights at the same time last year.

When to book flights from Chicago to Washington, D.C. Dulles Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago to Washington, D.C. Dulles Intl Airport according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Chicago to Washington, D.C. Dulles Intl Airport (CHI to IAD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago to Washington, D.C. Dulles Intl Airport

Best Price Found	$265
Fastest flight time	1h 44m
Direct flights	Every day

The best one-way flight to Washington, D.C. Dulles Intl Airport from Chicago in the past 72 hours is $265. The best round-trip flight deal from Chicago to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $326.

The fastest flight from Chicago to Washington, D.C. Dulles Intl Airport takes 1h 44m

Direct flights go from Chicago to Washington, D.C. Dulles Intl Airport every day.

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How far is Chicago to Washington, D.C. Dulles Intl by plane?
The straight-line distance from Chicago to Washington, D.C. Dulles Intl is 571.5 mi. Flights usually cover this in 3h 26m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Chicago to Washington, D.C. Dulles Intl Airport?
Prices for flights from Chicago to Washington, D.C. Dulles Intl Airport refresh daily.
How many operators does momondo search for flights from Chicago to Washington, D.C. Dulles Intl Airport?
The number of operators available for flights from Chicago to Washington, D.C. Dulles Intl Airport is 3 as of September 2025.
How old do you have to be to fly from Chicago to Washington, D.C. Dulles Intl Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago to Washington, D.C. Dulles Intl Airport.
What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?
The travel and health documents you'll need for your trip to Washington, D.C. Dulles Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington, D.C. Dulles Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Chicago to Washington, D.C. Dulles Intl Airport?
Based on momondo bookings for flights between Chicago and Washington, D.C. Dulles Intl Airport, the leading plane model is Boeing 737-900, making up 12.77% of the total bookings. Other popular models include Boeing 737 MAX 9 with 11.66%, Boeing 757-200 with 11.02%, and Boeing 787 Dreamliner with 5.70%.
What is the most popular airline from Chicago to Washington, D.C. Dulles Intl Airport?
Based on momondo bookings for flights between Chicago and Washington, D.C. Dulles Intl Airport, the leading airline is United Airlines, making up 93% of the total bookings. Other popular airlines include Frontier with 7%.

Best airlines flying from Chicago to Washington, D.C. Dulles Intl Airport

Compare and see reviews for airlines that fly from Chicago to Washington, D.C. Dulles Intl Airport with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $95	Free Cancellation	Rating 5.8 3,173 reviews	Search Frontier flights
Delta	PriceFrom $176	Free Cancellation	Rating 7.9 7,961 reviews	Search Delta flights
United Airlines	PriceFrom $189	Free Cancellation	Rating 7.4 8,926 reviews	Search United Airlines flights

United Airlines Flights From Chicago to Washington, D.C. Dulles Intl Airport
United Airlines operates around 33 flights from Chicago to Washington, D.C. Dulles Intl Airport every week. The average price of these flights found in the last 72 hours has been $304, but momondo users have found United Airlines deals from Chicago to Washington, D.C. Dulles Intl Airport from as low as $189 round-trip. United Airlines has been scored 7.4/10 in 8,926 reviews.

Alexandria

Gettysburg

National Harbor

Arlington

Winchester

Woodbridge

Waldorf

Tysons

Laurel

Colonial Beach

Silver Spring

Fredericksburg

Harpers Ferry

Towson

Rockville

Manassas

Reston

Fairfax

Glen Burnie

Gaithersburg

Why use momondo?

Why should I use momondo to find a flight deal from Chicago to Washington, D.C.?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Washington, D.C. from Chicago.

Can I find flights from Chicago to Washington, D.C. with flexible booking policies on momondo?

Flights from Chicago to Washington, D.C. with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Chicago to Washington, D.C.?

momondo helps you find the best flight between Chicago and Washington, D.C. by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Chicago to Washington, D.C. right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Washington, D.C. from Chicago. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Washington, D.C. Dulles Intl Airport trip

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Washington, D.C. Dulles Intl Airport flight routes

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Flights from Los Angeles to Washington, D.C. Dulles Intl

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Flights from Boston Logan Intl to Washington, D.C. Dulles Intl

Cheap flights from Chicago to Washington, D.C. from $78

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago to Washington, D.C. departing on 9/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Frontier flights from Chicago to Washington, D.C. Dulles Intl Airport

Our best Frontier deals on Chicago to Washington, D.C. Dulles Intl Airport flight tickets

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Our best Delta deals on Chicago to Washington, D.C. Dulles Intl Airport flight tickets

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How to get the cheapest flight ticket from Chicago to Washington, D.C. Dulles Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Washington, D.C. Dulles Intl Airport?

What is the cheapest day to depart on your flight to Washington, D.C. Dulles Intl Airport?

What is the cheapest time of day to depart on your flight to Washington, D.C. Dulles Intl Airport?

What is the cheapest Chicago to Washington, D.C. Dulles Intl flight route?

Fly from Chicago O'Hare Intl to Washington, D.C. Dulles Intl for the best Chicago - Washington, D.C. Dulles Intl flight prices

How far in advance should I book a flight to Washington, D.C. Dulles Intl Airport?

What cabin class options are available on Chicago to Washington, D.C. Dulles Intl flights?

There are 4 cabin classes available to choose from on Chicago to Washington, D.C. Dulles Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Chicago to Washington, D.C. Dulles Intl Airport flight prices changed over time?

As of September 2025, prices for Chicago to Washington, D.C. Dulles Intl Airport flights are approximately 61% more expensive when compared to flights at the same time last year.

What is the cheapest airline that flies from Chicago to Washington, D.C. Dulles Intl?

Frontier, Avelo Airlines, and United Airlines are the most popular carriers operating from Chicago to Washington, D.C. Dulles Intl

What airlines fly to Washington, D.C. Dulles Intl Airport?

Which airport is the most popular layover for flights between Chicago and Washington, D.C. Dulles Intl Airport?

Atlanta (ATL) was the most common stop: 57% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Chicago to Washington, D.C. Dulles Intl Airport?

Flights via Orlando (MCO) offer the lowest average round-trip price of $148.

Which layover airport has the shortest travel time from Chicago to Washington, D.C. Dulles Intl Airport?

Flights connecting via Detroit (DTW) have the shortest average one-way travel time: 4h 40m.

Which layover airport has the shortest connection time from Chicago to Washington, D.C. Dulles Intl Airport?

Detroit (DTW) has the shortest average layover time for this route: 1h 20m.

How many flights depart from Chicago to Washington, D.C. Dulles Intl Airport on average per day?

As of September 2025, there are 27 flights per day flying from Chicago to Washington, D.C. Dulles Intl Airport. The most common time of day flights depart is 8:00AM, with 47% of flights taking off at noon.

How many flights depart from Chicago to Washington, D.C. Dulles Intl Airport on average per week?

As of September 2025, 195 flights take off from Chicago and land in Washington, D.C. Dulles Intl Airport each week. The most common flight departure day for this route is Mon, with 17% of weekly flights taking off on this day.

When to book flights from Chicago to Washington, D.C. Dulles Intl Airport

Cheap Chicago to Washington, D.C. Dulles Intl Airport (CHI to IAD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago to Washington, D.C. Dulles Intl Airport

Best Price Found

Fastest flight time

Direct flights

How far is Chicago to Washington, D.C. Dulles Intl by plane?

When did momondo last update prices for flights from Chicago to Washington, D.C. Dulles Intl Airport?

How many operators does momondo search for flights from Chicago to Washington, D.C. Dulles Intl Airport?

How old do you have to be to fly from Chicago to Washington, D.C. Dulles Intl Airport?

What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

What is the most popular plane model from Chicago to Washington, D.C. Dulles Intl Airport?

What is the most popular airline from Chicago to Washington, D.C. Dulles Intl Airport?

Best airlines flying from Chicago to Washington, D.C. Dulles Intl Airport

Compare and see reviews for airlines that fly from Chicago to Washington, D.C. Dulles Intl Airport with momondo

United Airlines Flights From Chicago to Washington, D.C. Dulles Intl Airport

Traveling to a place near Washington, D.C.?

Why use momondo?

Why should I use momondo to find a flight deal from Chicago to Washington, D.C.?

Can I find flights from Chicago to Washington, D.C. with flexible booking policies on momondo?

How can momondo help me find flights from Chicago to Washington, D.C.?

I’m not ready to book a flight from Chicago to Washington, D.C. right now. Can momondo alert me if prices change?

An easier way to manage your Washington, D.C. Dulles Intl Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Washington, D.C.

Popular cities in the United States

Popular flights according to clicks in the last 7 days on momondo