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Cheap flights from Chicago to Washington, D.C. Dulles Intl Airport from $79

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 5/10. 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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Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from Chicago to Washington, D.C..
Frontier Logo
10:48 am - 4:34 pmMDW-IAD
4h 46m1 stop
Frontier Logo
3:32 pm - 11:47 pmIAD-MDW
9h 15m1 stop
$160Frontier
Find Deal
sáb, mai 17 - seg, mai 19
Frontier Logo
6:00 am - 2:23 pmORD-IAD
7h 23m1 stop
Frontier Logo
11:47 am - 4:41 pmIAD-ORD
5h 54m1 stop
$160Frontier
Find Deal
qui, mai 15 - ter, mai 20
United Airlines Logo
1:29 pm - 4:30 pmORD-IAD
2h 01mnonstop
United Airlines Logo
5:10 pm - 6:37 pmIAD-ORD
2h 27mnonstop
$193United Airlines
Find Deal
ter, mai 13 - sáb, mai 24
United Airlines Logo
9:05 pm - 11:59 pmORD-IAD
1h 54mnonstop
United Airlines Logo
6:22 am - 7:34 amIAD-ORD
2h 12mnonstop
$195United Airlines
Find Deal
qui, mai 8 - dom, mai 11
Delta Logo
7:05 am - 2:37 pmORD-IAD
6h 32m1 stop
Delta Logo
6:00 am - 9:51 amIAD-ORD
4h 51m1 stop
$197Delta
Find Deal
sáb, mai 10 - dom, mai 11
Delta Logo
5:55 pm - 11:35 pmORD-IAD
4h 40m1 stop
Delta Logo
3:37 pm - 9:20 pmIAD-ORD
6h 43m1 stop
$207Delta
Find Deal
sáb, mai 24 - qua, mai 28
Allegiant Air Logo
8:36 pm - 8:53 pmMDW-IAD
23h 17m2 stops
Allegiant Air Logo
3:58 pm - 7:15 amIAD-MDW
16h 17m1 stop
$246Allegiant Air
Find Deal
sex, jun 6 - dom, jun 8
 Logo
6:00 am - 2:23 pmORD-IAD
7h 23m1 stop
 Logo
12:49 pm - 7:09 pmIAD-ORD
7h 20m1 stop
qui, mai 1 - dom, mai 4
 Logo
5:20 pm - 2:44 pmORD-IAD
20h 24m1 stop
 Logo
11:54 am - 8:50 amIAD-ORD
21h 56m2 stops
sex, mai 30 - dom, jun 1
Allegiant Air Logo
7:00 pm - 9:05 pmMDW-IAD
25h 05m2 stops
Allegiant Air Logo
8:22 pm - 2:26 pmIAD-MDW
19h 04m1 stop
$291Allegiant Air
Find Deal
sex, mai 30 - dom, jun 1

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 13
ORD1:29 pmChicago O'Hare Intl
2h 01m
IAD4:30 pmWashington, D.C. Dulles Intl
May 24
IAD5:10 pmWashington, D.C. Dulles Intl
2h 27m
ORD6:37 pmChicago O'Hare Intl
United Airlines
May 8
ORD9:05 pmChicago O'Hare Intl
1h 54m
IAD11:59 pmWashington, D.C. Dulles Intl
May 11
IAD6:22 amWashington, D.C. Dulles Intl
2h 12m
ORD7:34 amChicago O'Hare Intl
United Airlines
May 20
ORD8:50 amChicago O'Hare Intl
1h 59m
IAD11:49 amWashington, D.C. Dulles Intl
May 31
IAD6:48 amWashington, D.C. Dulles Intl
2h 14m
ORD8:02 amChicago O'Hare Intl

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
May 15
ORD6:00 amChicago O'Hare Intl
7h 23m
1 stop
IAD2:23 pmWashington, D.C. Dulles Intl
May 20
IAD11:47 amWashington, D.C. Dulles Intl
5h 54m
1 stop
ORD4:41 pmChicago O'Hare Intl
Frontier
May 15
ORD6:00 amChicago O'Hare Intl
7h 23m
1 stop
IAD2:23 pmWashington, D.C. Dulles Intl
May 20
IAD11:47 amWashington, D.C. Dulles Intl
5h 54m
1 stop
ORD4:41 pmChicago O'Hare Intl
Frontier
May 15
ORD6:00 amChicago O'Hare Intl
7h 23m
1 stop
IAD2:23 pmWashington, D.C. Dulles Intl
May 20
IAD11:47 amWashington, D.C. Dulles Intl
5h 54m
1 stop
ORD4:41 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 $260. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of August, then flying in July is also cheap. Prices for this month can be found on momondo for an average of $279.

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 $460. When flying out on a Tuesday, 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 $686.

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 $401 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 $985 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 $240 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 April 2025, prices for Chicago to Washington, D.C. Dulles Intl Airport flights are approximately 12% 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

$79

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 $79. The best round-trip flight deal from Chicago to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $160.
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
3,281 reviews
Search Frontier flights
American AirlinesPriceFrom $109Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $176Free CancellationRating
8.0
7,917 reviews
Search Delta flights
United AirlinesPriceFrom $180Free CancellationRating
7.4
8,667 reviews
Search United Airlines flights
  • United Airlines Flights From Chicago to Washington, D.C. Dulles Intl Airport

    United Airlines operates around 34 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 $303, but momondo users have found United Airlines deals from Chicago to Washington, D.C. Dulles Intl Airport from as low as $180 round-trip. United Airlines has been scored 7.4/10 in 8,667 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
Tysons
Fredericksburg
Waldorf
Manassas
Harpers Ferry
Gaithersburg
Rockville
Glen Burnie
Fairfax
Linthicum Heights
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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