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Cheap flights from Chicago to Washington, D.C. Dulles Intl Airport from $80

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. Dulles Intl Airport departing on 5/2. 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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Find the cheapest flights from Chicago to Washington, D.C.

Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from Chicago to Washington, D.C..
8:11 am - 3:02 pmORD-IAD
5h 51m1 stop
4:03 pm - 11:08 pmIAD-ORD
8h 05m1 stop
$158Frontier
Find Deal
Thu, Apr 24 - Fri, Apr 25
6:25 pm - 10:54 pmMDW-IAD
3h 29m1 stop
1:00 pm - 6:45 pmIAD-MDW
6h 45m1 stop
$167Delta
Find Deal
Tue, May 20 - Wed, May 28
1:29 pm - 4:30 pmORD-IAD
2h 01mnonstop
3:30 pm - 4:44 pmIAD-ORD
2h 14mnonstop
$177United Airlines
Find Deal
Mon, May 5 - Thu, May 8
8:45 am - 11:44 amORD-IAD
1h 59mnonstop
12:55 pm - 2:10 pmIAD-ORD
2h 15mnonstop
$178United Airlines
Find Deal
Thu, Apr 17 - Sun, Apr 20
7:10 pm - 11:23 amORD-IAD
15h 13m1 stop
5:25 pm - 11:39 pmIAD-ORD
7h 14m1 stop
Thu, Apr 17 - Thu, Apr 24
7:10 pm - 11:23 amORD-IAD
15h 13m1 stop
11:37 am - 6:06 pmIAD-ORD
7h 29m1 stop
$240Sun Country Air
Find Deal
Thu, Apr 17 - Mon, Apr 21
8:11 am - 3:02 pmORD-IAD
5h 51m1 stop
12:17 pm - 5:53 pmIAD-ORD
6h 36m1 stop
Thu, Apr 24 - Sun, Apr 27
7:15 pm - 12:23 pmORD-IAD
16h 08m1 stop
12:17 pm - 5:53 pmIAD-ORD
6h 36m1 stop
$265Sun Country Air
Find Deal
Thu, Apr 24 - Sun, Apr 27
12:07 pm - 7:41 pmORD-IAD
6h 34m1 stop
5:00 am - 8:49 amIAD-ORD
4h 49m1 stop
$288American Airlines
Find Deal
Fri, Apr 18 - Sun, Apr 20
5:15 am - 12:49 pmORD-IAD
6h 34m1 stop
6:35 am - 10:37 amIAD-ORD
5h 02m1 stop
$317American Airlines
Find Deal
Sun, Jul 20 - Sun, Jul 27

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

Our best United Airlines deals on Chicago to Washington, D.C. Dulles Intl Airport flight tickets
United Airlines
May 5
ORD1:29 pmChicago O'Hare Intl
2h 01m
IAD4:30 pmWashington, D.C. Dulles Intl
May 8
IAD3:30 pmWashington, D.C. Dulles Intl
2h 14m
ORD4:44 pmChicago O'Hare Intl
United Airlines
Apr 17
ORD8:45 amChicago O'Hare Intl
1h 59m
IAD11:44 amWashington, D.C. Dulles Intl
Apr 20
IAD12:55 pmWashington, D.C. Dulles Intl
2h 15m
ORD2:10 pmChicago O'Hare Intl
United Airlines
Jul 2
ORD8:52 amChicago O'Hare Intl
2h 03m
IAD11:55 amWashington, D.C. Dulles Intl
Jul 4
IAD10:19 pmWashington, D.C. Dulles Intl
2h 11m
ORD11:30 pmChicago O'Hare Intl

Sun Country Air flights from Chicago to Washington, D.C. Dulles Intl Airport

Our best Sun Country Air deals on Chicago to Washington, D.C. Dulles Intl Airport flight tickets
Sun Country Air
Apr 17
ORD7:10 pmChicago O'Hare Intl
15h 13m
1 stop
IAD11:23 amWashington, D.C. Dulles Intl
Apr 21
IAD11:37 amWashington, D.C. Dulles Intl
7h 29m
1 stop
ORD6:06 pmChicago O'Hare Intl
Sun Country Air
Apr 24
ORD7:15 pmChicago O'Hare Intl
16h 08m
1 stop
IAD12:23 pmWashington, D.C. Dulles Intl
Apr 27
IAD12:17 pmWashington, D.C. Dulles Intl
6h 36m
1 stop
ORD5:53 pmChicago O'Hare Intl
Sun Country Air
Aug 8
ORD8:10 pmChicago O'Hare Intl
14h 33m
1 stop
IAD11:43 amWashington, D.C. Dulles Intl
Aug 10
IAD12:40 pmWashington, D.C. Dulles Intl
7h 31m
1 stop
ORD7:11 pmChicago O'Hare Intl

See travel insights to Washington, D.C. from

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?

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 $266. 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 $274.

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 $465. When flying out on a Saturday, 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 $673.

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 $399 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 $987 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 4 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 4 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 $244 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 March 2025, prices for Chicago to Washington, D.C. Dulles Intl Airport flights are approximately 9% cheaper 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

$80

Fastest flight time

1h 54m

Direct flights

Every day
The best one-way flight to Washington, D.C. Dulles Intl Airport from Chicago in the past 72 hours is $80. The best round-trip flight deal from Chicago to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $158.
The fastest flight from Chicago to Washington, D.C. Dulles Intl Airport takes 1h 54m
Direct flights go from Chicago to Washington, D.C. Dulles Intl Airport every day.

  • 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 1h 54m, 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?

  • 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?

  • 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
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $54Free CancellationRating
6.0
3,271 reviews
Search Frontier flights
American AirlinesPriceFrom $109Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $176Free CancellationRating
8.0
7,895 reviews
Search Delta flights
United AirlinesPriceFrom $181Free CancellationRating
7.4
8,603 reviews
Search United Airlines flights
  • United Airlines Flights From Chicago to Washington, D.C. Dulles Intl Airport

    United Airlines operates around 12 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 $181 round-trip. United Airlines has been scored 7.4/10 in 8,603 reviews.


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

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
Arlington
Gettysburg
National Harbor
Laurel
Winchester
Silver Spring
Woodbridge
Fredericksburg
Tysons
Waldorf
Manassas
Gaithersburg
Harpers Ferry
Linthicum Heights
Glen Burnie
Rockville
Fairfax
Towson
Reston

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.


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