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Cheap flights from Chicago to Washington, D.C. from £43

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 3/12. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — WAS
4 Dec — 11 Dec1
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

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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 4 November 2025.

Mon 8/1211:44ORD - BWI
1 stop11h 50mFrontier
Thu 11/1205:55BWI - ORD
1 stop12h 32mFrontier
Deal found 3/11£84
Mon 1/1218:15ORD - BWI
1 stop18h 06mMultiple Airlines
Mon 8/1215:36BWI - ORD
Nonstop2h 18mMultiple Airlines
Deal found 2/11£94
Sat 13/1210:55ORD - BWI
Nonstop1h 55mUnited Airlines
Sat 10/117:18BWI - ORD
Nonstop2h 20mUnited Airlines
Deal found 2/11£120
Mon 17/1106:45ORD - DCA
1 stop6h 51mJetBlue
Wed 19/1116:55DCA - ORD
1 stop5h 57mJetBlue
Deal found 3/11£129
Wed 3/1218:09ORD - BWI
Nonstop1h 59mUnited Airlines
Fri 5/1217:18BWI - ORD
Nonstop2h 08mUnited Airlines
Deal found 3/11£135
Mon 8/1211:01ORD - BWI
1 stop7h 42mMultiple Airlines
Thu 11/1221:11BWI - ORD
2 stops14h 57mMultiple Airlines
Deal found 3/11£138
Wed 19/1114:20ORD - BWI
Nonstop1h 54mUnited Airlines
Mon 24/1106:15BWI - ORD
Nonstop2h 16mUnited Airlines
Deal found 2/11£140
Mon 10/1106:45ORD - DCA
1 stop6h 51mJetBlue
Mon 10/1116:55DCA - ORD
1 stop4h 57mJetBlue
Deal found 3/11£142
Thu 27/1111:19ORD - BWI
1 stop4h 58mDelta
Fri 5/1218:21BWI - ORD
1 stop6h 40mDelta
Deal found 2/11£142
Mon 17/1106:45ORD - DCA
1 stop6h 51mJetBlue
Tue 18/1116:55DCA - ORD
1 stop4h 57mJetBlue
Deal found 3/11£146
Fri 14/1106:45ORD - DCA
1 stop6h 51mJetBlue
Sat 15/1116:55DCA - ORD
1 stop4h 57mJetBlue
Deal found 4/11£148
Mon 8/1220:50ORD - BWI
Nonstop2h 02mAmerican Airlines
Thu 11/1206:00BWI - ORD
Nonstop2h 19mAmerican Airlines
Deal found 3/11£149

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 4 November 2025.

Round-trip from

£84

One-way from

£43

Popular in

November

Cheapest in

August

Average price

£201

Good one-way deal

£223 or less
Frontier
  • Frontier
  • 8/12-11/12
  • 2 total stops
  • 24h 22m total
  • Chicago to Washington, D.C.
Search Deals
Frontier
  • Frontier
  • 3/12
  • 1 total stop
  • 7h 23m total
  • Chicago to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (£11 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£2 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
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 4 November 2025.
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

Wed 25/2

11:05-14:06

Nonstop2h 01m

Baltimore/Washington

Sat 28/2

17:14-18:37

Nonstop2h 23m

£106

ChicagoBaltimore

ORD - BWI

ORDBWI

Chicago O'Hare Intl

Fri 23/1

18:35-21:41

Nonstop2h 06m

Baltimore/Washington

Sun 25/1

17:18-18:38

Nonstop2h 20m

£120

ChicagoBaltimore

ORD - BWI

ORDBWI

Chicago O'Hare Intl

Wed 3/12

18:09-21:08

Nonstop1h 59m

Baltimore/Washington

Fri 5/12

17:18-18:26

Nonstop2h 08m

£135

ChicagoBaltimore

ORD - BWI

ORDBWI

Chicago O'Hare Intl

Thu 4/12

14:30-17:25

Nonstop1h 55m

Baltimore/Washington

Thu 11/12

10:20-11:28

Nonstop2h 08m

£135

ChicagoBaltimore

ORD - BWI

ORDBWI

Chicago O'Hare Intl

Thu 27/11

11:19-18:22

1 stop6h 03m

Baltimore/Washington

Fri 12/12

06:00-10:14

1 stop5h 14m

£142

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Fri 14/11

06:45-14:36

1 stop6h 51m

Washington, D.C. Reagan-National

Tue 18/11

16:55-20:52

1 stop4h 57m

£148

ChicagoBaltimore

ORD - BWI

ORDBWI

Chicago O'Hare Intl

Thu 25/12

18:20-21:26

Nonstop2h 06m

Baltimore/Washington

Mon 19/1

17:18-18:38

Nonstop2h 20m

£159

ChicagoBaltimore

ORD - BWI

ORDBWI

Chicago O'Hare Intl

Fri 20/2

18:25-21:27

Nonstop2h 02m

Baltimore/Washington

Sat 21/2

06:20-07:43

Nonstop2h 23m

£159

ChicagoBaltimore

ORD - BWI

ORDBWI

Chicago O'Hare Intl

Mon 24/11

07:05-09:59

Nonstop1h 54m

Baltimore/Washington

Wed 3/12

13:10-14:19

Nonstop2h 09m

£163

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Fri 10/4

13:45-22:57

1 stop8h 12m

Washington, D.C. Reagan-National

Mon 13/4

06:05-12:50

1 stop7h 45m

£164

Flights are sorted by cheapest return flights first.

Deals found on 2/11

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 31 October 2025.

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 £129). 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 4 November 2025.

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 55% 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 4 November 2025.

The most flights from CHI to WAS are scheduled on a Monday (82 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (34 on average).

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

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 £106, United Airlines can have you in Washington, D.C. from Chicago in 2h 01m. 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 (100%), ITA Airways (95%), Ethiopian Air( 91%).

  • What are the cheapest flights from Chicago to Washington, D.C.?

    Looking for the cheapest flight from Chicago to Washington, D.C.? While on average our users pay £223, our data indicates the cheapest price to be £223. The most popular route (Chicago O'Hare Intl - Baltimore/Washington), is priced around £91.

  • 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 £129). 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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