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District of Columbia

$67+ Cheap flights from Illinois to District of Columbia

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 10/14. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — IAD
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Illinois to District of Columbia

Keep the following information in mind while searching for Illinois to District of Columbia flight deals. Data was last updated September 11, 2025.

Round-trip from

$132
(Kiwi.com)

One-way from

$67
(American Airlines)

Popular in

January

Cheapest in

August

Average price

$205

Good round-trip deal

$223 or less

Good one-way deal

$108 or less
From Illinois to District of Columbia
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One-way flight from Illinois to District of Columbia
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Highest demand for flights based on searches. 5% potential increase in price ($12 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($3 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Illinois to District of Columbia.
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Price to beat on a one-way flight from Illinois to District of Columbia.
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Find flight deals from Illinois to District of Columbia

Cheapest flights from Illinois to District of Columbia
Explore the most affordable flight options available from Illinois to District of Columbia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/151:37 pmMDW - IAD
1 stop9h 18mFrontier
Tue 11/188:40 amIAD - MDW
1 stop29h 01mFrontier
Deal found 9/10$132
This United Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/156:00 amORD - DCA
Nonstop1h 58mUnited Airlines
Sun 10/1912:00 pmDCA - ORD
Nonstop2h 14mUnited Airlines
Deal found 9/10$133
This Southwest deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/146:00 amMDW - DCA
Nonstop1h 45mSouthwest
Sat 11/158:25 amDCA - MDW
Nonstop2h 10mSouthwest
Deal found 9/10$133
This United Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/109:20 pmORD - IAD
Nonstop2h 01mUnited Airlines
Wed 10/156:50 pmIAD - ORD
Nonstop2h 08mUnited Airlines
Deal found 9/10$133
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/411:23 amMDW - IAD
1 stop20h 54mFrontier
Mon 10/61:55 pmIAD - MDW
1 stop10h 46mFrontier
Deal found 9/9$134
This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/35:15 pmMDW - IAD
1 stop5h 24mFrontier
Sun 10/510:17 amIAD - MDW
1 stop27h 54mFrontier
Deal found 9/10$136
This Southwest deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/156:25 amMDW - DCA
1 stop6h 30mSouthwest
Tue 11/186:55 amDCA - MDW
1 stop7h 10mSouthwest
Deal found 9/10$137
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/88:05 amMDW - IAD
1 stop10h 41mFrontier
Mon 10/133:10 pmIAD - MDW
1 stop9h 36mFrontier
Deal found 9/9$139
This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/269:48 amMDW - IAD
1 stop7h 31mFrontier
Wed 10/19:15 amIAD - MDW
1 stop7h 43mFrontier
Deal found 9/10$140
This Gotogate deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/26:20 amMDW - IAD
1 stop5h 35mFrontier
Mon 10/61:55 pmIAD - MDW
1 stop10h 46mFrontier
Deal found 9/11$142
This Gotogate deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/25:10 amORD - IAD
1 stop6h 45mFrontier
Mon 10/66:10 amIAD - ORD
1 stop11h 07mFrontier
Deal found 9/11$142
This United Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/16:00 amORD - DCA
1 stop5h 19mUnited Airlines
Wed 10/18:00 pmDCA - ORD
Nonstop2h 16mUnited Airlines
Deal found 9/11$143

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to District of Columbia 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 2,558,603 searches. Data last updated September 11, 2025.
Use the filters below to find and compare flights from Illinois to District of Columbia that are best for you.

Fly from

Illinois

Fly to

District of Columbia

Route

Depart

Return

Price

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Tue 12/23

9:00 am-11:58 am

Nonstop1h 58m

Washington, D.C. Reagan-National

Thu 12/25

6:30 am-7:48 am

Nonstop2h 18m

$133

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Fri 10/10

6:00 am-8:58 am

Nonstop1h 58m

Washington, D.C. Reagan-National

Tue 10/14

7:00 pm-8:15 pm

Nonstop2h 15m

$133

ChicagoWashington, D.C.

ORD - IAD

ORDIAD

Chicago O'Hare Intl

Fri 10/17

9:20 pm-12:22 am

Nonstop2h 02m

Washington, D.C. Dulles Intl

Wed 10/22

10:10 pm-11:15 pm

Nonstop2h 05m

$133

ChicagoWashington, D.C.

ORD - IAD

ORDIAD

Chicago O'Hare Intl

Wed 10/22

12:55 pm-3:57 pm

Nonstop2h 02m

Washington, D.C. Dulles Intl

Thu 10/23

5:15 pm-6:30 pm

Nonstop2h 15m

$133

ChicagoWashington, D.C.

ORD - IAD

ORDIAD

Chicago O'Hare Intl

Thu 10/23

10:45 am-1:51 pm

Nonstop2h 06m

Washington, D.C. Dulles Intl

Sat 10/25

10:10 pm-11:15 pm

Nonstop2h 05m

$133

ChicagoWashington, D.C.

ORD - IAD

ORDIAD

Chicago O'Hare Intl

Sat 10/11

5:55 pm-8:55 pm

Nonstop2h 00m

Washington, D.C. Dulles Intl

Sun 10/12

6:30 am-7:41 am

Nonstop2h 11m

$133

ChicagoWashington, D.C.

ORD - IAD

ORDIAD

Chicago O'Hare Intl

Fri 10/10

9:20 pm-12:21 am

Nonstop2h 01m

Washington, D.C. Dulles Intl

Wed 10/15

6:50 pm-7:58 pm

Nonstop2h 08m

$133

ChicagoWashington, D.C.

MDW - IAD

MDWIAD

Chicago Midway

Wed 10/1

9:00 am-7:55 pm

1 stop9h 55m

Washington, D.C. Dulles Intl

Sat 10/4

1:02 pm-9:23 am

1 stop21h 21m

$136

ChicagoWashington, D.C.

MDW - IAD

MDWIAD

Chicago Midway

Wed 11/12

2:06 pm-8:20 pm

1 stop5h 14m

Washington, D.C. Dulles Intl

Fri 11/14

8:36 pm-10:26 am

1 stop14h 50m

$143

ChicagoWashington, D.C.

MDW - IAD

MDWIAD

Chicago Midway

Wed 10/8

8:05 am-7:46 pm

1 stop10h 41m

Washington, D.C. Dulles Intl

Wed 10/15

9:00 am-1:38 pm

1 stop5h 38m

$143

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 60 results
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Best time to book a flight from Illinois to District of Columbia

Have a flexible travel schedule? Discover the best time to fly to District of Columbia from Illinois with our price prediction graph.
Estimated round-trip 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 Illinois to District of Columbia

What is the cheapest month to book a flight from Illinois to District of Columbia?

Currently, August is the cheapest month in which you can book a flight from Illinois to District of Columbia (average of $292). Flying from Illinois to District of Columbia in April is currently the most expensive (average of $337). 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 IL to DC?

Find hourly flight availability from Illinois to District of Columbia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to District of Columbia as you normally would.

Weekly flight availability from Illinois to District of Columbia

Explore weekly flight availability from Illinois to District of Columbia. 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 September 11, 2025.

The most flights from USIL to USDC are scheduled on a Monday (30 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (16 on average).

Reviews of airlines servicing District of Columbia

Get insights into the airlines that provide service to District of Columbia. 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 District of Columbia. Reviews last updated September 11, 2025.
Read through reviews of airlines operating flights from Illinois to District of Columbia, such as Southwest, Delta, and United Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,248 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
8.0
Very good
7,960 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,937 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,177 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Food

7.0

Boarding

8.1

Comfort

8.0

Overall

8.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

Find useful and relevant information for your journey from Illinois to District of Columbia. 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 Illinois to District of Columbia?

    Departing from Illinois to District of Columbia will take you 1h 45m. Airlines will cover a distance of 599 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Illinois to District of Columbia one-way?

    The cheapest airline one-way is Southwest, with whom users have recently found tickets for as low as $67. However, be on the lookout for offers from American Airlines and Frontier, as they are both options that can get you from Illinois to District of Columbia for a low price.

  • Can I find deals for flights from Illinois to District of Columbia that include hotel bookings?

    Yes. In addition to deals on Illinois to District of Columbia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to District of Columbia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to District of Columbia.

  • Can I find deals for business class flights from Illinois to District of Columbia?

    Yes. Cheapflights offers flight deals from Illinois to District of Columbia 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 Illinois to District of Columbia?

    Currently, August is the cheapest month in which you can book a flight from Illinois to District of Columbia (average of $292). Flying from Illinois to District of Columbia in April is currently the most expensive (average of $337). 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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Alternative routes for Illinois to District of Columbia

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Illinois to District of Columbia

Discover the top 6 airlines that operate flights from Illinois to District of Columbia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$45Average$161FlexibilityNo cancel feeOn-time65%
FrontierCheapest$75Average$186FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$130Average$392FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$152Average$284FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$158Average$345FlexibilityNo cancel feeOn-time69%
DeltaCheapest$166Average$375FlexibilityNo cancel feeOn-timeN/A

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