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Cheap flights from Chicago to Washington, D.C. from £48

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 22/4. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — WAS
8 Feb — 15 Feb1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Chicago to Washington, D.C. are usually found in August or September, booked 83 days in advance, depart on a Tuesday or Monday and return on a Monday

Cheap 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 9 January 2026.

Round-trip from

£90

One-way from

£48

Popular in

November

Cheapest in

August

Average price

£209
Frontier
  • Frontier
  • 22/2-1/3
  • 1 total stop
  • 13h 36m total
  • Chicago to Washington, D.C.
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United Airlines
  • United Airlines
  • 17/2
  • Nonstop
  • 2h 02m total
  • Chicago to Washington, D.C.
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Highest demand for flights based on searches. 8% potential increase in price (£12 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£5 potential savings vs. average return price).
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Average for round-trip flights in January 2026
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Find 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 9 January 2026.

Sun 22/210:44ORD - BWI
1 stop11h 09mMultiple Airlines
Sun 1/321:59BWI - ORD
Nonstop2h 27mMultiple Airlines
Deal found 8/1£90
Wed 4/211:05ORD - BWI
Nonstop2h 06mUnited Airlines
Mon 9/217:18BWI - ORD
Nonstop2h 20mUnited Airlines
Deal found 8/1£96
Tue 3/221:06ORD - BWI
Nonstop1h 53mAmerican Airlines
Tue 10/206:00BWI - ORD
Nonstop2h 30mAmerican Airlines
Deal found 6/1£97
Sat 28/211:00ORD - BWI
Nonstop2h 01mUnited Airlines
Tue 3/317:20BWI - ORD
Nonstop2h 23mUnited Airlines
Deal found 6/1£100
Tue 3/214:53ORD - BWI
1 stop8h 28mFrontier
Tue 10/206:00BWI - ORD
1 stop12h 12mFrontier
Deal found 6/1£104
Thu 29/114:15ORD - BWI
1 stop6h 45mSouthwest
Mon 2/206:40BWI - ORD
1 stop7h 20mSouthwest
Deal found 8/1£111
Wed 11/314:40ORD - DCA
1 stop7h 15mSouthwest
Tue 17/312:40DCA - ORD
1 stop6h 55mSouthwest
Deal found 8/1£111
Wed 4/210:16ORD - DCA
Nonstop2h 13mUnited Airlines
Thu 5/214:00DCA - ORD
Nonstop2h 28mUnited Airlines
Deal found 7/1£112
Thu 5/218:17ORD - IAD
Nonstop2h 00mUnited Airlines
Wed 11/317:26IAD - ORD
Nonstop2h 25mUnited Airlines
Deal found 8/1£112
Wed 28/116:15ORD - DCA
1 stop4h 37mUnited Airlines
Wed 4/210:50DCA - ORD
Nonstop2h 15mUnited Airlines
Deal found 6/1£113
Tue 17/211:00ORD - BWI
Nonstop2h 01mUnited Airlines
Fri 20/206:30BWI - ORD
Nonstop2h 23mUnited Airlines
Deal found 8/1£114
Thu 5/213:45ORD - BWI
2 stops5h 30mSouthwest
Thu 12/206:15BWI - ORD
1 stop7h 00mSouthwest
Deal found 8/1£115

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 9 January 2026.
Use the filters below to find and compare flights from Chicago to Washington, D.C. that are best for you.

Fly from

Chicago

Fly to

Washington, D.C.

Route

Depart

Return

Price

ChicagoBaltimore

ORD - BWI

ORDBWI

Chicago O'Hare Intl

Tue 10/2

18:15-21:21

Nonstop2h 06m

Baltimore/Washington

Thu 12/2

06:30-07:53

Nonstop2h 23m

£96

ChicagoBaltimore

ORD - BWI

ORDBWI

Chicago O'Hare Intl

Sat 28/2

18:15-21:17

Nonstop2h 02m

Baltimore/Washington

Tue 3/3

17:20-18:43

Nonstop2h 23m

£100

ChicagoBaltimore

ORD - BWI

ORDBWI

Chicago O'Hare Intl

Thu 5/3

16:15-23:55

1 stop6h 40m

Baltimore/Washington

Mon 9/3

16:35-21:55

1 stop6h 20m

£111

ChicagoBaltimore

ORD - BWI

ORDBWI

Chicago O'Hare Intl

Thu 29/1

14:15-22:00

1 stop6h 45m

Baltimore/Washington

Mon 2/2

16:00-21:50

1 stop6h 50m

£111

ChicagoBaltimore

ORD - BWI

ORDBWI

Chicago O'Hare Intl

Tue 10/2

11:55-20:50

2 stops7h 55m

Baltimore/Washington

Thu 26/2

06:15-12:15

1 stop7h 00m

£115

ChicagoBaltimore

ORD - BWI

ORDBWI

Chicago O'Hare Intl

Sat 24/1

07:20-19:03

1 stop10h 43m

Baltimore/Washington

Sun 25/1

11:30-19:41

1 stop9h 11m

£121

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Wed 8/4

11:55-20:45

2 stops7h 50m

Washington, D.C. Reagan-National

Mon 13/4

06:05-12:50

1 stop7h 45m

£130

ChicagoBaltimore

ORD - BWI

ORDBWI

Chicago O'Hare Intl

Sat 21/2

06:30-14:16

1 stop6h 46m

Baltimore/Washington

Mon 23/2

19:06-23:56

1 stop5h 50m

£132

ChicagoBaltimore

ORD - BWI

ORDBWI

Chicago O'Hare Intl

Thu 5/3

05:25-11:54

1 stop5h 29m

Baltimore/Washington

Mon 9/3

17:35-20:14

1 stop3h 39m

£132

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Wed 28/1

13:58-18:57

1 stop3h 59m

Washington, D.C. Reagan-National

Wed 4/2

09:54-13:13

1 stop4h 19m

£132

Flights are sorted by cheapest return flights first.

Deals found on 6/1

Showing 1-10 of 60 results
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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.

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

Use this chart to determine the optimal time to book a return flight from Chicago to Washington, D.C.. Price data was last updated on 2 January 2026.

To ensure you get the cheapest price possible for a flight from Chicago to Washington, D.C., you should look to book at least 83 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.

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

Currently, February is the cheapest month in which you can book a flight from Chicago to Washington, D.C. (average of £43). Flying from Chicago to Washington, D.C. in April is currently the most expensive (average of £126). 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 9 January 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 evening, which can drop the price by up to 57% versus a flight at midday.

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 9 January 2026.

The most flights from CHI to WAS are scheduled on a Wednesday (74 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (36 on average).

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

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

About 20% of weekly flights between Chicago and Washington, D.C. have experienced delays in the past year, with the average delay time being 128 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?

Saturday 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, Southwest have had the lowest number of delays on this route, with just 18% of flights being delayed.

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 £96, United Airlines can have you in Washington, D.C. from Chicago in 2h 06m. 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 - Washington, D.C. Dulles Intl. You may also consider Chicago O'Hare Intl - Baltimore/Washington or Chicago O'Hare Intl - Washington, D.C. Reagan-National.

  • 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 (100%), Air China (94%), Avianca( 85%).

  • 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, February is the cheapest month in which you can book a flight from Chicago to Washington, D.C. (average of £43). Flying from Chicago to Washington, D.C. in April is currently the most expensive (average of £126). 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
Hanover
Oxon Hill
Woodbridge
Arlington
Alexandria
College Park

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