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Cheap flights from Chicago to Washington, D.C. from £51

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 27/8. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — WAS
18 Jun — 25 Jun1
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 Tuesday 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 13 June 2025.

Round-trip from

£94

One-way from

£51

Popular in

January

Cheapest in

September

Average price

£172

Good one-way deal

£132 or less
Frontier
  • Frontier
  • 28/7-4/8
  • Nonstop
  • 4h 28m total
  • Chicago to Washington, D.C.
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American Airlines
  • American Airlines
  • 27/8
  • Nonstop
  • 2h 07m total
  • Chicago to Washington, D.C.
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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 June 2025
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Price to beat on a one-way flight from Chicago (CHI) to Washington, D.C. (WAS).
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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 13 June 2025.

Mon 28/707:45ORD - BWI
Nonstop2h 06mFrontier
Mon 4/811:36BWI - ORD
Nonstop2h 22mFrontier
Deal found 12/6£94
Wed 3/913:50ORD - BWI
Nonstop2h 05mSouthwest
Wed 10/910:35BWI - ORD
Nonstop2h 15mSouthwest
Deal found 13/6£102
Tue 29/707:00ORD - BWI
Nonstop2h 03mUnited Airlines
Wed 6/806:15BWI - ORD
Nonstop2h 15mUnited Airlines
Deal found 11/6£109
Thu 14/808:00ORD - DCA
Nonstop1h 56mUnited Airlines
Mon 18/810:30DCA - ORD
Nonstop2h 19mUnited Airlines
Deal found 10/6£116
Thu 14/821:31ORD - IAD
Nonstop1h 59mUnited Airlines
Mon 18/822:19IAD - ORD
Nonstop2h 11mUnited Airlines
Deal found 11/6£116
Wed 29/1013:30ORD - DCA
1 stop6h 20mSouthwest
Mon 3/1107:30DCA - ORD
1 stop8h 15mSouthwest
Deal found 11/6£130
Mon 28/720:45ORD - DCA
Nonstop2h 12mAmerican Airlines
Mon 4/815:54DCA - ORD
Nonstop2h 22mAmerican Airlines
Deal found 12/6£144
Fri 4/717:59ORD - BWI
1 stop5h 30mDelta
Tue 8/706:00BWI - ORD
1 stop5h 16mDelta
Deal found 13/6£145
Wed 8/1015:35ORD - DCA
1 stop4h 39mDelta
Tue 14/1008:00DCA - ORD
1 stop5h 08mDelta
Deal found 13/6£145
Tue 19/811:05ORD - IAD
1 stop4h 26mDelta
Tue 26/806:00IAD - ORD
1 stop5h 04mDelta
Deal found 13/6£145
Fri 12/913:36ORD - DCA
1 stop4h 45mJetBlue
Wed 17/906:25DCA - ORD
1 stop6h 45mJetBlue
Deal found 13/6£149
Mon 28/718:02ORD - BWI
1 stop18h 43mSpirit Airlines
Mon 4/809:39BWI - ORD
1 stop12h 51mSpirit Airlines
Deal found 12/6£156

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 13 June 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 28/7

07:45-10:51

Nonstop2h 06m

Baltimore/Washington

Mon 4/8

11:36-12:58

Nonstop2h 22m

£94

ChicagoBaltimore

ORD - BWI

ORDBWI

Chicago O'Hare Intl

Wed 3/9

13:50-16:55

Nonstop2h 05m

Baltimore/Washington

Wed 10/9

10:35-11:50

Nonstop2h 15m

£102

ChicagoBaltimore

ORD - BWI

ORDBWI

Chicago O'Hare Intl

Tue 29/7

07:00-10:03

Nonstop2h 03m

Baltimore/Washington

Wed 6/8

06:15-07:30

Nonstop2h 15m

£109

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Thu 14/8

08:00-10:56

Nonstop1h 56m

Washington, D.C. Reagan-National

Mon 18/8

10:30-11:49

Nonstop2h 19m

£116

ChicagoWashington, D.C.

ORD - IAD

ORDIAD

Chicago O'Hare Intl

Thu 14/8

21:31-00:30

Nonstop1h 59m

Washington, D.C. Dulles Intl

Mon 18/8

22:19-23:30

Nonstop2h 11m

£116

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Wed 29/10

13:30-20:50

1 stop6h 20m

Washington, D.C. Reagan-National

Mon 3/11

07:30-14:45

1 stop8h 15m

£130

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Mon 28/7

20:45-23:57

Nonstop2h 12m

Washington, D.C. Reagan-National

Mon 4/8

15:54-17:16

Nonstop2h 22m

£144

ChicagoBaltimore

ORD - BWI

ORDBWI

Chicago O'Hare Intl

Fri 4/7

15:40-21:41

1 stop5h 01m

Baltimore/Washington

Fri 11/7

19:52-00:09

1 stop5h 17m

£145

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Wed 8/10

15:35-21:14

1 stop4h 39m

Washington, D.C. Reagan-National

Tue 14/10

08:00-12:08

1 stop5h 08m

£145

ChicagoWashington, D.C.

ORD - IAD

ORDIAD

Chicago O'Hare Intl

Tue 19/8

11:05-16:31

1 stop4h 26m

Washington, D.C. Dulles Intl

Tue 26/8

06:00-10:04

1 stop5h 04m

£145

Flights are sorted by cheapest return flights first.

Deals found on 11/6

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 9 June 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 13 June 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 81% 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 13 June 2025.

The most flights from CHI to WAS are scheduled on a Friday (87 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (44 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 13 June 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
10,000 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very Good
10,000 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very Good
4,286 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very Good
7,946 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
JetBlue
7.3
Good
2,923 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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?

    Frontier, at £94, 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. Frontier is 43% 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 £51 on American Airlines. Other airlines that offer cheap prices include Southwest from £52 and United Airlines from £59 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. Dulles Intl 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: Republic Airways (100%), United Airlines (87%), 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.

See more FAQs

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