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Cheap flights from Chicago O'Hare Intl Airport to Washington, D.C. from $77

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 O'Hare Intl Airport to Washington, D.C. departing on 1/13. 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 O'Hare Intl Airport to Washington, D.C.

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
12:37 pm - 8:20 pmORD-IAD
6h 43m1 stop
Frontier Logo
9:21 am - 9:51 pmIAD-ORD
13h 30m1 stop
$150Frontier
Find Deal
Tue, Nov 18 - Thu, Dec 11
Frontier Logo
6:00 am - 11:55 pmORD-IAD
16h 55m1 stop
Frontier Logo
6:41 pm - 12:08 amIAD-ORD
6h 27m1 stop
$151Frontier
Find Deal
Sat, Nov 15 - Thu, Nov 27
Frontier Logo
12:37 pm - 8:20 pmORD-IAD
6h 43m1 stop
Frontier Logo
5:45 am - 10:24 pmIAD-ORD
17h 39m1 stop
$153Frontier
Find Deal
Tue, Nov 18 - Mon, Dec 8
Frontier Logo
1:50 pm - 12:11 amORD-IAD
9h 21m2 stops
Frontier Logo
9:00 am - 2:31 pmIAD-ORD
6h 31m1 stop
$154Frontier
Find Deal
Mon, Nov 17 - Wed, Dec 10
Frontier Logo
4:20 pm - 11:05 pmORD-IAD
5h 45m1 stop
Frontier Logo
5:26 pm - 10:24 pmIAD-ORD
5h 58m1 stop
$155Frontier
Find Deal
Fri, Dec 5 - Sun, Dec 7
Frontier Logo
7:51 pm - 11:38 amORD-IAD
14h 47m2 stops
Frontier Logo
5:37 pm - 12:01 amIAD-ORD
7h 24m1 stop
$157Frontier
Find Deal
Thu, Jan 8 - Mon, Jan 12
Frontier Logo
8:00 am - 7:51 pmORD-IAD
10h 51m1 stop
Frontier Logo
5:45 am - 5:27 pmIAD-ORD
12h 42m1 stop
$158Frontier
Find Deal
Sat, Nov 15 - Thu, Dec 11
Frontier Logo
4:20 pm - 11:05 pmORD-IAD
5h 45m1 stop
Frontier Logo
5:26 pm - 10:24 pmIAD-ORD
5h 58m1 stop
$159Frontier
Find Deal
Fri, Dec 5 - Sun, Dec 7
Multiple Airlines Logo
9:22 pm - 2:29 pmORD-IAD
16h 07m2 stops
Multiple Airlines Logo
5:45 am - 11:54 amIAD-ORD
7h 09m1 stop
$165Multiple Airlines
Find Deal
Tue, Dec 2 - Sat, Dec 6
Multiple Airlines Logo
10:52 am - 11:55 pmORD-IAD
12h 03m2 stops
Multiple Airlines Logo
5:45 am - 11:54 amIAD-ORD
7h 09m1 stop
$166Multiple Airlines
Find Deal
Sat, Nov 15 - Sat, Dec 13

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

Our best Frontier deals on Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport flight tickets
Frontier
Nov 18
ORD12:37 pmChicago O'Hare Intl
6h 43m
1 stop
IAD8:20 pmWashington, D.C. Dulles Intl
Dec 11
IAD9:21 amWashington, D.C. Dulles Intl
13h 30m
1 stop
ORD9:51 pmChicago O'Hare Intl
$150
Find similar
Frontier
Nov 15
ORD6:00 amChicago O'Hare Intl
16h 55m
1 stop
IAD11:55 pmWashington, D.C. Dulles Intl
Nov 27
IAD6:41 pmWashington, D.C. Dulles Intl
6h 27m
1 stop
ORD12:08 amChicago O'Hare Intl
$151
Find similar
Frontier
Nov 18
ORD12:37 pmChicago O'Hare Intl
6h 43m
1 stop
IAD8:20 pmWashington, D.C. Dulles Intl
Dec 8
IAD5:45 amWashington, D.C. Dulles Intl
17h 39m
1 stop
ORD10:24 pmChicago O'Hare Intl
$153
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated October 29, 2025.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoWashington, D.C.

ORD - IAD

ORDIAD

Chicago O'Hare Intl

Tue 11/18

12:37 pm-8:20 pm

1 stop6h 43m

Washington, D.C. Dulles Intl

Thu 12/11

9:21 am-9:51 pm

1 stop13h 30m

$150

ChicagoWashington, D.C.

ORD - IAD

ORDIAD

Chicago O'Hare Intl

Sat 11/15

6:00 am-11:55 pm

1 stop16h 55m

Washington, D.C. Dulles Intl

Thu 11/27

6:41 pm-12:08 am

1 stop6h 27m

$151

ChicagoWashington, D.C.

ORD - IAD

ORDIAD

Chicago O'Hare Intl

Tue 11/18

12:37 pm-8:20 pm

1 stop6h 43m

Washington, D.C. Dulles Intl

Mon 12/8

5:45 am-10:24 pm

1 stop17h 39m

$153

ChicagoWashington, D.C.

ORD - IAD

ORDIAD

Chicago O'Hare Intl

Mon 11/17

1:50 pm-12:11 am

2 stops9h 21m

Washington, D.C. Dulles Intl

Wed 12/10

9:00 am-2:31 pm

1 stop6h 31m

$154

ChicagoWashington, D.C.

ORD - IAD

ORDIAD

Chicago O'Hare Intl

Fri 12/5

4:20 pm-11:05 pm

1 stop5h 45m

Washington, D.C. Dulles Intl

Sun 12/7

5:26 pm-10:24 pm

1 stop5h 58m

$155

ChicagoWashington, D.C.

ORD - IAD

ORDIAD

Chicago O'Hare Intl

Thu 1/8

7:51 pm-11:38 am

2 stops14h 47m

Washington, D.C. Dulles Intl

Mon 1/12

5:37 pm-12:01 am

1 stop7h 24m

$157

ChicagoWashington, D.C.

ORD - IAD

ORDIAD

Chicago O'Hare Intl

Sat 11/15

8:00 am-7:51 pm

1 stop10h 51m

Washington, D.C. Dulles Intl

Thu 12/11

5:45 am-5:27 pm

1 stop12h 42m

$158

ChicagoWashington, D.C.

ORD - IAD

ORDIAD

Chicago O'Hare Intl

Fri 12/5

4:20 pm-11:05 pm

1 stop5h 45m

Washington, D.C. Dulles Intl

Sun 12/7

5:26 pm-10:24 pm

1 stop5h 58m

$159

ChicagoWashington, D.C.

ORD - IAD

ORDIAD

Chicago O'Hare Intl

Tue 12/2

9:22 pm-2:29 pm

2 stops16h 07m

Washington, D.C. Dulles Intl

Sat 12/6

5:45 am-11:54 am

1 stop7h 09m

$165

ChicagoWashington, D.C.

ORD - IAD

ORDIAD

Chicago O'Hare Intl

Sat 11/15

10:52 am-11:55 pm

2 stops12h 03m

Washington, D.C. Dulles Intl

Sat 12/13

5:45 am-11:54 am

1 stop7h 09m

$166

Flights are sorted by cheapest round-trip flights first.

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How to get the cheapest flight ticket from Chicago O'Hare Intl Airport 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, September is the cheapest month to fly from Chicago O'Hare Intl Airport 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 $282. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of September, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $292.

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 $569. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport for around $771.

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 O'Hare Intl Airport in the morning is the least expensive time of day to depart. momondo users have found prices as low as $470 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 $990 on average. Flights to Washington, D.C. Dulles Intl Airport from Chicago O'Hare Intl Airport at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

Fly from Chicago O'Hare Intl to Washington, D.C. Dulles Intl for the best Chicago O'Hare Intl - 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 O'Hare Intl Airport 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 $305 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 O'Hare Intl Airport for as low as $240 on momondo.

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

There are 4 cabin classes available to choose from on Chicago O'Hare Intl 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.

Can stopping save me money on Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport flights?

You could potentially save up to 10% on your flight if you consider stops on a Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport flight.

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

As of October 2025, prices for Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport flights are approximately 3% more expensive when compared to flights at the same time last year.

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

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago O'Hare Intl Airport 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 O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport (ORD to IAD) flight deals and tips

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

Best Price Found

$158

Fastest flight time

1h 49m

Direct flights

Every day
The best one-way flight to Washington, D.C. Dulles Intl Airport from Chicago O'Hare Intl Airport in the past 72 hours is $158. The best round-trip flight deal from Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $334.
The fastest flight from Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport takes 1h 49m
Direct flights go from Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport every day.
Search flight deals

  • How far is Chicago O'Hare Intl to Washington, D.C. Dulles Intl by plane?

    Chicago O'Hare Intl and Washington, D.C. Dulles Intl are 587.2 mi apart from one another. In terms of flight time, this usually takes a little over 5h 10m.

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

    Prices for flights from Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport are updated daily.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago O'Hare Intl Airport 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 O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport?

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

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

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $100Free CancellationRating
5.8
3,124 reviews
Search Frontier flights
United AirlinesPriceFrom $193Free CancellationRating
7.4
9,001 reviews
Search United Airlines flights
DeltaPriceFrom $196Free CancellationRating
7.9
7,994 reviews
Search Delta flights

  • United Airlines Flights From Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport

    United Airlines flight deals from Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport start from $193 round-trip. Over the 31 United Airlines flights for this route in a normal week, average airfare is usually $309 round-trip - but some users have found much cheaper deals with momondo.

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

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

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?

Yes. All flights to Washington, D.C. from Chicago on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search for Chicago to Washington, D.C. flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Of course. momondo tracks the price of Chicago to Washington, D.C. flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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