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Cheap flights from Chicago to Washington, D.C. from £61

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 24/5. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — WAS
21 Apr — 28 Apr1
1 adult

Cheapflights Tip: The best prices from Chicago to Washington, D.C. are usually found in September or August, booked 67 days in advance, depart on a Wednesday or Saturday and return on a Tuesday

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 16 April 2025.

Round-trip from

£132

One-way from

£61

Popular in

June

Cheapest in

September

Average price

£192
Spirit Airlines
  • Spirit Airlines
  • 5/5-12/5
  • 2 total stops
  • 26h 28m total
  • Chicago to Washington, D.C.
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United Airlines
  • United Airlines
  • 24/5
  • Nonstop
  • 2h 07m total
  • Chicago to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (£4 potential increase over avg. return price).
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Cheapest flight prices on average. 1% potential price decrease (£2 potential savings vs. average return price).
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Average for round-trip flights in April 2025
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Find flight deals from Chicago to Washington, D.C.

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 16 April 2025.

Mon 5/519:47ORD - BWI
1 stop12h 35mSpirit Airlines
Mon 12/519:57BWI - ORD
1 stop13h 53mSpirit Airlines
Deal found 15/4£132
Wed 28/513:50ORD - BWI
Nonstop1h 55mSouthwest
Thu 29/510:35BWI - ORD
Nonstop2h 15mSouthwest
Deal found 15/4£134
Fri 30/514:24ORD - IAD
Nonstop2h 06mUnited Airlines
Sat 31/506:48IAD - ORD
Nonstop2h 14mUnited Airlines
Deal found 15/4£135
Sat 24/513:55ORD - DCA
Nonstop2h 04mUnited Airlines
Sun 25/506:00DCA - ORD
1 stop5h 44mUnited Airlines
Deal found 15/4£141
Tue 13/518:30ORD - BWI
Nonstop2h 07mUnited Airlines
Tue 20/506:45BWI - ORD
Nonstop2h 17mUnited Airlines
Deal found 15/4£143
Wed 4/607:05ORD - BWI
1 stop4h 42mDelta
Wed 4/616:47BWI - ORD
1 stop5h 33mDelta
Deal found 16/4£144
Sat 10/511:05ORD - DCA
1 stop5h 19mDelta
Sun 11/506:05DCA - ORD
1 stop6h 42mDelta
Deal found 15/4£149
Sat 10/516:25ORD - IAD
1 stop6h 10mDelta
Sun 11/506:00IAD - ORD
1 stop4h 51mDelta
Deal found 15/4£149
Wed 28/516:00ORD - DCA
1 stop5h 25mSouthwest
Fri 30/506:05DCA - ORD
1 stop7h 40mSouthwest
Deal found 15/4£151
Mon 5/517:21ORD - DCA
1 stop17h 46mFrontier
Mon 12/507:00DCA - ORD
1 stop17h 41mFrontier
Deal found 15/4£152
Thu 8/516:03ORD - DCA
1 stop5h 55mJetBlue
Tue 13/510:10DCA - ORD
1 stop9h 26mJetBlue
Deal found 16/4£154
Mon 5/507:01ORD - BWI
Nonstop1h 58mAmerican Airlines
Mon 12/507:26BWI - ORD
Nonstop2h 17mAmerican Airlines
Deal found 15/4£191

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 16 April 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

Mon 5/5

19:47-09:22

1 stop12h 35m

Baltimore/Washington

Mon 12/5

19:57-08:50

1 stop13h 53m

£132

ChicagoBaltimore

ORD - BWI

ORDBWI

Chicago O'Hare Intl

Wed 28/5

13:50-16:45

Nonstop1h 55m

Baltimore/Washington

Thu 29/5

10:35-11:50

Nonstop2h 15m

£134

ChicagoWashington, D.C.

ORD - IAD

ORDIAD

Chicago O'Hare Intl

Fri 30/5

14:24-17:30

Nonstop2h 06m

Washington, D.C. Dulles Intl

Sat 31/5

06:48-08:02

Nonstop2h 14m

£135

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Sat 24/5

13:55-16:59

Nonstop2h 04m

Washington, D.C. Reagan-National

Sun 25/5

06:00-10:44

1 stop5h 44m

£141

ChicagoBaltimore

ORD - BWI

ORDBWI

Chicago O'Hare Intl

Tue 13/5

18:30-21:37

Nonstop2h 07m

Baltimore/Washington

Tue 20/5

06:45-08:02

Nonstop2h 17m

£143

ChicagoBaltimore

ORD - BWI

ORDBWI

Chicago O'Hare Intl

Wed 4/6

07:05-12:47

1 stop4h 42m

Baltimore/Washington

Wed 4/6

16:47-21:20

1 stop5h 33m

£144

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Sat 10/5

11:05-17:24

1 stop5h 19m

Washington, D.C. Reagan-National

Sun 11/5

06:05-11:47

1 stop6h 42m

£149

ChicagoWashington, D.C.

ORD - IAD

ORDIAD

Chicago O'Hare Intl

Sat 10/5

16:25-23:35

1 stop6h 10m

Washington, D.C. Dulles Intl

Sun 11/5

06:00-09:51

1 stop4h 51m

£149

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Wed 28/5

16:00-22:25

1 stop5h 25m

Washington, D.C. Reagan-National

Fri 30/5

06:05-12:45

1 stop7h 40m

£151

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Mon 5/5

17:21-12:07

1 stop17h 46m

Washington, D.C. Reagan-National

Mon 12/5

07:00-23:41

1 stop17h 41m

£152

Flights are sorted by cheapest return flights first.

Deals found on 14/4

Showing 1-10 of 38 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 11 April 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 67 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 £565). Flying from Chicago to Washington, D.C. in July is currently the most expensive (average of £946). 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 16 April 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 83% 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 16 April 2025.

The most flights from CHI to WAS are scheduled on a Monday (80 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (27 on average).

Rainfall in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. ranges from 66.0 - 102.0 inches per month. May is typically the wettest month, when rainfall can reach 102.0 mm. February is typically the driest time to visit Washington, D.C. when rainfall is around 66.0 mm.

Temperature in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C., use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 2.0 C).

Reviews of airlines servicing Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Washington, D.C.. Reviews last updated 16 April 2025.
To help decide which airline to fly from Chicago to Washington, D.C., see what other customers have to say about Alaska Airlines, Southwest and Delta. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very Good
9,876 reviews
Check prices

Food

7.1

Overall

8.0

Entertainment

7.1

Comfort

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Alaska Airlines
8.0
Very Good
9,876 reviews
Alaska Airlines
8.0
Very Good
9,876 reviews
Check prices

Food

7.1

Overall

8.0

Entertainment

7.1

Comfort

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Southwest
8.0
Very Good
4,282 reviews
Alaska Airlines
8.0
Very Good
9,876 reviews
Check prices

Food

7.1

Overall

8.0

Entertainment

7.1

Comfort

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Delta
8.0
Very Good
7,917 reviews
Alaska Airlines
8.0
Very Good
9,876 reviews
Check prices

Food

7.1

Overall

8.0

Entertainment

7.1

Comfort

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Qatar Airways
7.4
Good
3,553 reviews
Alaska Airlines
8.0
Very Good
9,876 reviews
Check prices

Food

7.1

Overall

8.0

Entertainment

7.1

Comfort

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
United Airlines
7.4
Good
8,658 reviews
Alaska Airlines
8.0
Very Good
9,876 reviews
Check prices

Food

7.1

Overall

8.0

Entertainment

7.1

Comfort

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

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.

  • What are the cheapest airlines flying from Chicago to Washington, D.C. round-trip?

    Spirit Airlines, at £132, was found to be the cheapest airline from Chicago to Washington, D.C..Alternate airlines flying return to your destination include Southwest and United Airlines. Spirit Airlines is 24% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Chicago to Washington, D.C. one-way?

    One-way options have recently been found by users for as low as £61 on United Airlines. Other airlines that offer cheap prices include Southwest from £68 and Frontier from £69 one-way.

  • 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: United Airlines (90%), Southwest (90%), Air New Zealand( 81%).

  • 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 £565). Flying from Chicago to Washington, D.C. in July is currently the most expensive (average of £946). 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.

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