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Cheap flights from Chicago to Washington, D.C. from £66

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 16/9. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — WAS
16 Sep — 23 Sep1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Chicago to Washington, D.C. are usually found in September or January, booked 84 days in advance, depart on a Tuesday or Wednesday and return on a Friday

Cheap flight deals from Chicago to Washington, D.C.

Enter your travel dates to find the best prices.

Cheapest flights from Chicago to Washington, D.C.
Explore the most affordable flight options available from Chicago to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 August 2026.

Wed 16/906:20 -
1 stop9h 26m
Sat 19/910:22 -
1 stop9h 01m
Deal found 13/8£109
Fri 11/906:20 -
Nonstop2h 05m
Fri 18/921:32 -
1 stop26h 27m
Deal found 14/8£117
Thu 24/907:30 -
Nonstop2h 00m
Tue 29/912:10 -
Nonstop2h 20m
Deal found 16/8£131
Wed 2/910:49 -
Nonstop2h 09m
Sat 5/906:05 -
Nonstop2h 20m
Deal found 12/8£134
Wed 2/906:00 -
Nonstop1h 55m
Sun 6/911:57 -
Nonstop2h 17m
Deal found 12/8£136
Wed 2/914:30 -
Nonstop2h 07m
Sat 5/915:40 -
Nonstop2h 19m
Deal found 12/8£136
Tue 1/910:49 -
Nonstop2h 09m
Wed 30/917:29 -
Nonstop2h 20m
Deal found 12/8£137
Thu 3/912:40 -
Nonstop2h 02m
Sun 6/910:30 -
Nonstop2h 16m
Deal found 13/8£137
Thu 3/914:30 -
Nonstop2h 07m
Sat 5/922:27 -
Nonstop2h 13m
Deal found 13/8£137
Fri 11/910:26 -
1 stop5h 52m
Fri 18/918:13 -
1 stop22h 07m
Deal found 14/8£138
Mon 14/907:30 -
Nonstop2h 00m
Tue 15/906:05 -
Nonstop2h 21m
Deal found 13/8£139
Thu 15/1010:00 -
Nonstop2h 08m
Thu 22/1006:30 -
Nonstop2h 14m
Deal found 13/8£141

Find flight deals from Chicago to Washington, D.C.

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to Washington, D.C. (WAS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 17 August 2026.

Round-trip from

£109

One-way from

£66

Popular in

June

Cheapest in

September

Average price

£188

Good one-way deal

£49 or less
Frontier
  • Frontier
  • 16/9-19/9
  • 2 total stops
  • 18h 27m total
  • Chicago to Washington, D.C.
Search Deals
United Airlines
  • United Airlines
  • 16/9
  • Nonstop
  • 2h 09m total
  • Chicago to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (£35 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£5 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
Search Deals
Price to beat on a one-way flight from Chicago (CHI) to Washington, D.C. (WAS).
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Chicago to Washington, D.C. 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, Cheapflights users made 858,174 searches. Data last updated 17 August 2026.
Use the filters below to find and compare flights from Chicago to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

ChicagoWashington, D.C.

ORD Chicago O'Hare Intl - IAD Washington, D.C. Dulles Intl

ORDIAD

Chicago O'Hare Intl

Wed 9/9

12:55-16:01

Nonstop2h 06m

Washington, D.C. Dulles Intl

Fri 11/9

22:27-23:40

Nonstop2h 13m

£136

ChicagoBaltimore

ORD Chicago O'Hare Intl - BWI Baltimore/Washington

ORDBWI

Chicago O'Hare Intl

Thu 10/12

06:45-13:04

1 stop5h 19m

Baltimore/Washington

Tue 15/12

12:15-17:03

1 stop5h 48m

£146

ChicagoWashington, D.C.

ORD Chicago O'Hare Intl - DCA Washington, D.C. Reagan-National

ORDDCA

Chicago O'Hare Intl

Sat 10/10

17:29-23:07

1 stop4h 38m

Washington, D.C. Reagan-National

Tue 13/10

17:30-22:17

1 stop5h 47m

£146

ChicagoWashington, D.C.

ORD Chicago O'Hare Intl - DCA Washington, D.C. Reagan-National

ORDDCA

Chicago O'Hare Intl

Thu 29/10

13:23-19:33

1 stop5h 10m

Washington, D.C. Reagan-National

Sat 31/10

06:10-10:11

1 stop5h 01m

£146

ChicagoWashington, D.C.

ORD Chicago O'Hare Intl - IAD Washington, D.C. Dulles Intl

ORDIAD

Chicago O'Hare Intl

Sat 31/10

06:10-11:50

1 stop4h 40m

Washington, D.C. Dulles Intl

Tue 3/11

12:20-16:32

1 stop5h 12m

£146

ChicagoWashington, D.C.

ORD Chicago O'Hare Intl - IAD Washington, D.C. Dulles Intl

ORDIAD

Chicago O'Hare Intl

Thu 10/9

11:17-16:30

1 stop4h 13m

Washington, D.C. Dulles Intl

Mon 14/9

19:17-23:59

1 stop5h 42m

£146

ChicagoWashington, D.C.

ORD Chicago O'Hare Intl - IAD Washington, D.C. Dulles Intl

ORDIAD

Chicago O'Hare Intl

Sat 3/10

06:00-11:45

1 stop4h 45m

Washington, D.C. Dulles Intl

Wed 7/10

06:05-10:29

1 stop5h 24m

£146

ChicagoWashington, D.C.

ORD Chicago O'Hare Intl - DCA Washington, D.C. Reagan-National

ORDDCA

Chicago O'Hare Intl

Tue 1/9

05:30-11:27

1 stop4h 57m

Washington, D.C. Reagan-National

Tue 1/9

17:40-22:24

1 stop5h 44m

£156

ChicagoWashington, D.C.

ORD Chicago O'Hare Intl - IAD Washington, D.C. Dulles Intl

ORDIAD

Chicago O'Hare Intl

Thu 29/10

05:27-11:32

1 stop5h 05m

Washington, D.C. Dulles Intl

Sat 31/10

08:03-12:13

1 stop5h 10m

£156

ChicagoWashington, D.C.

ORD Chicago O'Hare Intl - IAD Washington, D.C. Dulles Intl

ORDIAD

Chicago O'Hare Intl

Sat 19/9

10:25-17:46

1 stop6h 21m

Washington, D.C. Dulles Intl

Mon 21/9

19:17-23:59

1 stop5h 42m

£156

Flights are sorted by cheapest return flights first.

Deals found on 14/8

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Chicago to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Chicago with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Chicago to Washington, D.C.

What is the cheapest month to book a flight from Chicago to Washington, D.C.?

Currently, September is the cheapest month in which you can book a flight from Chicago to Washington, D.C. (average of £208). Flying from Chicago to Washington, D.C. in June is currently the most expensive (average of £297). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from CHI to WAS?

Find hourly flight availability from Chicago to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 17 August 2026.

When flying from Chicago to Washington, D.C., the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 56% versus a flight in the afternoon.

Weekly flight availability from Chicago to Washington, D.C.

Explore weekly flight availability from Chicago to Washington, D.C.. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 17 August 2026.

The most flights from CHI to WAS are scheduled on a Friday (95 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (62 on average).

How much does it cost for a return flight from Chicago to Washington, D.C.?

Airfare is below average for this route at the moment.
Chicago to Washington, D.C. flights typically cost between £135 and £245 in September.
The cheapest return price found within the last 5 days was £109 on Frontier (16 Sept–19 Sept).

How often are flights from Chicago to Washington, D.C. delayed?

About 22% of weekly flights between Chicago and Washington, D.C. have experienced delays in the past year, with the average delay time being 132 minutes.

What is the most punctual flight time for Chicago to Washington, D.C. flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Tuesday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Chicago to Washington, D.C. flights?

Over the past year, United Airlines have had the lowest number of delays on this route, with just 21% of flights being delayed.

How far ahead should I book a flight from Chicago to Washington, D.C.?

To ensure you get the cheapest price possible for a flight from Chicago to Washington, D.C., you should look to book at least 82 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

Related info for your journey

Find useful and relevant information for your journey from Chicago to Washington, D.C.. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Chicago to Washington, D.C.?

    For as low as £162, Delta can have you in Washington, D.C. from Chicago in 2h 09m. Airlines will cover a distance of 620 mi. Both multi-stop and direct flights can be found to your destination and back.

  • What are the most popular routes from Chicago to Washington, D.C.?

    The most popular route from Chicago to Washington, D.C. is Chicago O'Hare Intl - Baltimore/Washington. You may also consider Chicago O'Hare Intl - Washington, D.C. Reagan-National or Chicago O'Hare Intl - Washington, D.C. Dulles Intl.

  • What are the most reliable airlines from Chicago to Washington, D.C.?

    Before booking your flight to Washington, D.C. from Chicago, check out the most reliable airlines to get you to your destination on time: Egyptair (96%), Air China (94%), ITA Airways( 92%).

  • Can I find deals for flights from Chicago to Washington, D.C. that include hotel bookings?

    Yes. In addition to deals on Chicago to Washington, D.C. flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Chicago to Washington, D.C.?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chicago to Washington, D.C..

  • Can I find deals for business class flights from Chicago to Washington, D.C.?

    Yes. Cheapflights offers flight deals from Chicago to Washington, D.C. by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Chicago to Washington, D.C.?

    Currently, September is the cheapest month in which you can book a flight from Chicago to Washington, D.C. (average of £208). Flying from Chicago to Washington, D.C. in June is currently the most expensive (average of £297). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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

Book flights to Washington, D.C. if you plan to visit one of these locations
Silver Spring
Alexandria
Gaithersburg
Oxon Hill
Hanover
Woodbridge
Glen Burnie
Springfield

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Can Cheapflights find flights from Chicago to Washington, D.C. with no change fees?

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