How long does it take to fly to Washington, D.C. Dulles Intl Airport?

Flight times from Illinois to Washington, D.C. Dulles Intl Airport vary, but if you’re flying out of Chicago and flying into Washington, D.C. Dulles Intl Airport (one of the most popular routes), then the duration is 2h 41m on average. Another popular route from Illinois to Washington, D.C. Dulles Intl Airport is flying from Peoria to Washington, D.C. Dulles Intl Airport, which will take roughly 4h 25m. Keep in mind that layovers or delays could extend your travel time.

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

Frontier, Delta, and Allegiant Air are the most popular carriers operating from Illinois to Washington, D.C. Dulles Intl

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

As of June 2026, there are 4 operators available to choose from for flights from Illinois to Washington, D.C. Dulles Intl Airport.

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

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Illinois 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 required for your trip to Washington, D.C. Dulles Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington, D.C. Dulles Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$88 Cheap Flights from Illinois to Washington, D.C. Dulles Intl Airport in 2026

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

As of June 2026, 208 flights take off from Illinois and land in Washington, D.C. Dulles Intl Airport each week. The most common flight departure day for this route is Thu, with 19% of weekly flights taking off on this day.

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Illinois to Washington, D.C.

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

3:53 pm - 7:02 pm

ORD

IAD

2h 09mnonstop

6:10 am - 7:27 am

IAD

ORD

2h 17mnonstop

$237United Airlines

Tue, Jul 28 - Thu, Jul 30

6:42 pm - 11:26 pm

MDW

IAD

3h 44m

1 stop

11:06 am - 3:38 pm

IAD

MDW

5h 32m

1 stop

$238Delta

Sat, Aug 8 - Sat, Aug 15

8:03 am - 4:46 pm

ORD

IAD

7h 43m

1 stop

10:58 am - 5:12 pm

IAD

ORD

7h 14m

1 stop

$238Delta

Wed, Jul 15 - Sat, Jul 18

1:50 pm - 10:55 pm

ORD

IAD

8h 05m

1 stop

8:33 pm - 8:02 am

IAD

ORD

12h 29m

1 stop

$239Frontier

Thu, Jul 23 - Wed, Aug 5

6:05 am - 5:14 pm

MDW

IAD

10h 09m

1 stop

6:49 am - 11:07 am

IAD

MDW

5h 18m

1 stop

$240Frontier

Wed, Jul 15 - Sat, Jul 18

1:50 pm - 10:52 pm

ORD

IAD

8h 02m

1 stop

8:33 pm - 8:02 am

IAD

ORD

12h 29m

1 stop

$240Frontier

Wed, Aug 5 - Sun, Aug 9

4:20 pm - 10:05 pm

MLI

IAD

4h 45m

1 stop

1:08 pm - 12:41 am

IAD

MLI

12h 33m

2 stops

$266American Airlines

Tue, Jul 28 - Tue, Aug 4

11:53 am - 12:10 am

MLI

IAD

11h 17m

2 stops

1:08 pm - 12:41 am

IAD

MLI

12h 33m

2 stops

$271American Airlines

Tue, Jul 28 - Tue, Aug 4

6:34 pm - 5:14 pm

STL

IAD

21h 40m

1 stop

12:00 pm - 11:59 pm

IAD

STL

12h 59m

2 stops

$274Multiple Airlines

Thu, Jul 30 - Mon, Aug 3

7:31 pm - 12:47 pm

SPI

IAD

16h 16m

1 stop

7:18 pm - 7:41 pm

IAD

SPI

25h 23m

1 stop

$289Multiple Airlines

Wed, Aug 5 - Fri, Aug 14

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United Airlines flights from Illinois to Washington, D.C. Dulles Intl Airport

Our best United Airlines deals on Illinois to Washington, D.C. Dulles Intl Airport flight tickets

United Airlines

Jul 28

ORD3:53 pmChicago O'Hare Intl

2h 09m

IAD7:02 pmWashington, D.C. Dulles Intl

Jul 30

IAD6:10 amWashington, D.C. Dulles Intl

2h 17m

ORD7:27 amChicago O'Hare Intl

$237

United Airlines

Jul 1

ORD6:30 amChicago O'Hare Intl

1h 54m

IAD9:24 amWashington, D.C. Dulles Intl

Jul 1

IAD10:20 pmWashington, D.C. Dulles Intl

2h 11m

ORD11:31 pmChicago O'Hare Intl

$239

United Airlines

Sep 4

ORD6:25 amChicago O'Hare Intl

1h 58m

IAD9:23 amWashington, D.C. Dulles Intl

Sep 8

IAD5:15 pmWashington, D.C. Dulles Intl

2h 22m

ORD6:37 pmChicago O'Hare Intl

$243

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

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

Frontier

Jul 23

ORD1:50 pmChicago O'Hare Intl

8h 05m

1 stop

IAD10:55 pmWashington, D.C. Dulles Intl

Aug 5

IAD8:33 pmWashington, D.C. Dulles Intl

12h 29m

1 stop

ORD8:02 amChicago O'Hare Intl

$239

Frontier

Jul 15

MDW6:05 amChicago Midway

10h 09m

1 stop

IAD5:14 pmWashington, D.C. Dulles Intl

Jul 18

IAD6:49 amWashington, D.C. Dulles Intl

5h 18m

1 stop

MDW11:07 amChicago Midway

$240

Frontier

Jul 15

ORD8:05 amChicago O'Hare Intl

10h 33m

1 stop

IAD7:38 pmWashington, D.C. Dulles Intl

Jul 23

IAD8:33 pmWashington, D.C. Dulles Intl

40h 42m

2 stops

ORD12:15 pmChicago O'Hare Intl

$241

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

ChicagoWashington, D.C.

ORD - IAD

ORDIAD

Chicago O'Hare Intl

Tue 7/28

3:53 pm-7:02 pm

Nonstop2h 09m

Washington, D.C. Dulles Intl

Thu 7/30

6:10 am-7:27 am

Nonstop2h 17m

$237

ChicagoWashington, D.C.

MDW - IAD

MDWIAD

Chicago Midway

Sat 8/8

6:42 pm-11:26 pm

1 stop3h 44m

Washington, D.C. Dulles Intl

Sat 8/15

11:06 am-3:38 pm

1 stop5h 32m

$238

ChicagoWashington, D.C.

ORD - IAD

ORDIAD

Chicago O'Hare Intl

Wed 7/15

8:03 am-4:46 pm

1 stop7h 43m

Washington, D.C. Dulles Intl

Sat 7/18

10:58 am-5:12 pm

1 stop7h 14m

$238

ChicagoWashington, D.C.

ORD - IAD

ORDIAD

Chicago O'Hare Intl

Thu 7/23

1:50 pm-10:55 pm

1 stop8h 05m

Washington, D.C. Dulles Intl

Wed 8/5

8:33 pm-8:02 am

1 stop12h 29m

$239

ChicagoWashington, D.C.

MDW - IAD

MDWIAD

Chicago Midway

Wed 7/15

6:05 am-5:14 pm

1 stop10h 09m

Washington, D.C. Dulles Intl

Sat 7/18

6:49 am-11:07 am

1 stop5h 18m

$240

ChicagoWashington, D.C.

ORD - IAD

ORDIAD

Chicago O'Hare Intl

Wed 8/5

1:50 pm-10:52 pm

1 stop8h 02m

Washington, D.C. Dulles Intl

Sun 8/9

8:33 pm-8:02 am

1 stop12h 29m

$240

MolineWashington, D.C.

MLI - IAD

MLIIAD

Moline Quad-City

Tue 7/28

4:20 pm-10:05 pm

1 stop4h 45m

Washington, D.C. Dulles Intl

Tue 8/4

1:08 pm-12:41 am

2 stops12h 33m

$266

MolineWashington, D.C.

MLI - IAD

MLIIAD

Moline Quad-City

Tue 7/28

11:53 am-12:10 am

2 stops11h 17m

Washington, D.C. Dulles Intl

Tue 8/4

1:08 pm-12:41 am

2 stops12h 33m

$271

St. LouisWashington, D.C.

STL - IAD

STLIAD

Lambert-St Louis

Thu 7/30

6:34 pm-5:14 pm

1 stop21h 40m

Washington, D.C. Dulles Intl

Mon 8/3

12:00 pm-11:59 pm

2 stops12h 59m

$274

SpringfieldWashington, D.C.

SPI - IAD

SPIIAD

Springfield Capital

Wed 8/5

7:31 pm-12:47 pm

1 stop16h 16m

Washington, D.C. Dulles Intl

Fri 8/14

7:18 pm-7:41 pm

1 stop25h 23m

$289

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Illinois 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

Other information

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

In general, October is the cheapest month to fly from Illinois 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 $80. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of October, then flying in June is also cheap. Prices for this month can be found on momondo for an average of $86.

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 $598. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Illinois to Washington, D.C. Dulles Intl Airport for around $938.

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 Illinois in the morning is the least expensive time of day to depart. momondo users have found prices as low as $600 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 $996 on average. Flights to Washington, D.C. Dulles Intl Airport from Illinois at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

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

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

You are more likely to see cheaper flights to Washington, D.C. Dulles Intl Airport from Illinois 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 $340 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 Illinois for as low as $255 on momondo.

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

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

Can stopping save me money on Illinois to Washington, D.C. Dulles Intl Airport flights?

No. A direct flight is the cheapest option for a flight between Illinois to Washington, D.C. Dulles Intl Airport.

Cheap Illinois to Washington, D.C. Dulles Intl Airport flight deals and tips

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

Best Price Found	$210
Fastest flight time	1h 44m
Direct flights	Every day

The best one-way flight to Washington, D.C. Dulles Intl Airport from Illinois in the past 72 hours is $210. The best round-trip flight deal from Illinois to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $431.

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

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

Search flight deals

Frequently asked questions about flying from Illinois to Washington, D.C. Dulles Intl Airport

When did momondo last update prices for flights from Illinois to Washington, D.C. Dulles Intl Airport?
Prices for flights from Illinois to Washington, D.C. Dulles Intl Airport were last updated today.
How many operators does momondo search for flights from Illinois to Washington, D.C. Dulles Intl Airport?
As of June 2026, there are 4 operators available to choose from for flights from Illinois to Washington, D.C. Dulles Intl Airport.
How old do you have to be to fly from Illinois to Washington, D.C. Dulles Intl Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Illinois 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 required for your trip to Washington, D.C. Dulles Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington, D.C. Dulles Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Illinois to Washington, D.C. Dulles Intl Airport?
Based on momondo bookings for flights between Illinois and Washington, D.C. Dulles Intl Airport, the leading plane model is Boeing 737-900, making up 13.73% of the total bookings. Other popular models include Airbus A321neo with 11.87%, Boeing 737 MAX 8 with 10.06%, and Boeing 737-800 with 8.55%.

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

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

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $100	Free Cancellation	Rating 5.6 2,866 reviews		Search Frontier flights
United Airlines	PriceFrom $213	Free Cancellation	Rating 7.4 9,886 reviews		Search United Airlines flights

Alexandria

National Harbor

Arlington

Gettysburg

Winchester

Waldorf

Laurel

Woodbridge

Fredericksburg

Gaithersburg

Colonial Beach

Linthicum Heights

Rockville

Silver Spring

Towson

Manassas

Sterling

Tysons

Springfield

Fairfax

Why use momondo?

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

It is quick and easy to find Illinois to Washington, D.C. flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Washington, D.C. that suits you.

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

All flight searches from Illinois to Washington, D.C. on momondo can be filtered to show those which offer flexible booking policies.

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

Once all potential Illinois to Washington, D.C. flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Illinois 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 Illinois. 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.

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Cheap flights from Illinois to Washington, D.C. from $88

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Washington, D.C. departing on 7/17. 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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United Airlines flights from Illinois to Washington, D.C. Dulles Intl Airport

Our best United Airlines deals on Illinois to Washington, D.C. Dulles Intl Airport flight tickets

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

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

momondo Fare Finder

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

See travel insights to Washington, D.C. from

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

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 Illinois to Washington, D.C. Dulles Intl flight route?

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

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

Can stopping save me money on Illinois to Washington, D.C. Dulles Intl Airport flights?

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

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

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

How long does it take to fly to Washington, D.C. Dulles Intl Airport?

Cheap Illinois to Washington, D.C. Dulles Intl Airport flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Illinois to Washington, D.C. Dulles Intl Airport

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

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

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List of cabin classes available on flights landing in Washington, D.C.. Availability may vary depending on flight origin and airline.

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