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District of Columbia

$54+ 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 3/11. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — IAD
Mar 2 — Mar 91
Mon 3/2
Mon 3/9
1 adult, Economy
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Cheap 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 January 31, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/30. 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 3/66:51 pm
ORD
-
IAD
2 stops28h 40m
Multiple Airlines
Wed 3/116:20 am
IAD
-
ORD
1 stop12h 37m
Multiple Airlines
Deal found 1/30$141
This Kiwi.com deal was found by Cheapflights users on 1/30. 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.
Mon 3/94:44 pm
ORD
-
IAD
1 stop6h 47m
Frontier
Wed 3/116:20 am
IAD
-
ORD
1 stop12h 37m
Frontier
Deal found 1/30$142
This Kiwi.com deal was found by Cheapflights users on 1/31. 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 2/284:42 pm
ORD
-
IAD
1 stop16h 48m
Frontier
Mon 3/25:22 pm
IAD
-
ORD
1 stop18h 29m
Frontier
Deal found 1/31$143
This Expedia deal was found by Cheapflights users on 1/30. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/199:05 am
MDW
-
IAD
1 stop6h 38m
Frontier
Sat 2/2110:29 am
IAD
-
MDW
1 stop12h 04m
Frontier
Deal found 1/30$144
This Kiwi.com deal was found by Cheapflights users on 1/29. 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 2/187:00 am
MDW
-
IAD
1 stop26h 33m
Frontier
Mon 2/2311:41 am
IAD
-
MDW
1 stop9h 06m
Frontier
Deal found 1/29$145
This Kiwi.com deal was found by Cheapflights users on 1/29. 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 2/274:42 pm
ORD
-
IAD
1 stop15h 52m
Frontier
Mon 3/25:22 pm
IAD
-
ORD
1 stop6h 17m
Frontier
Deal found 1/29$147
This Super.com deal was found by Cheapflights users on 1/29. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/199:05 am
MDW
-
IAD
1 stop6h 38m
Frontier
Thu 2/2611:22 am
IAD
-
MDW
1 stop5h 54m
Frontier
Deal found 1/29$148
This Kiwi.com deal was found by Cheapflights users on 1/31. 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 2/286:51 pm
ORD
-
IAD
2 stops38h 49m
Multiple Airlines
Mon 3/25:22 pm
IAD
-
ORD
1 stop18h 29m
Multiple Airlines
Deal found 1/31$148
This Kiwi.com deal was found by Cheapflights users on 1/30. 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 3/64:23 pm
ORD
-
IAD
1 stop14h 01m
Frontier
Wed 3/116:20 am
IAD
-
ORD
1 stop12h 37m
Frontier
Deal found 1/30$152
This Kiwi.com deal was found by Cheapflights users on 1/30. 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.
Thu 3/512:44 pm
ORD
-
IAD
1 stop17h 40m
Multiple Airlines
Mon 3/96:20 am
IAD
-
ORD
1 stop27h 03m
Multiple Airlines
Deal found 1/30$153
This Kiwi.com deal was found by Cheapflights users on 1/31. 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.
Sun 3/19:04 pm
MDW
-
IAD
1 stop12h 36m
Frontier
Thu 3/511:22 am
IAD
-
MDW
1 stop5h 54m
Frontier
Deal found 1/31$154
This Frontier deal was found by Cheapflights users on 1/31. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/195:05 am
ORD
-
IAD
1 stop10h 38m
Frontier
Mon 2/235:22 pm
IAD
-
ORD
1 stop6h 17m
Frontier
Deal found 1/31$154

Find 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 January 31, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$141
(Kiwi.com)

One-way from

$54
(Trip.com)

Popular in

November

Cheapest in

August

Average price

$303

Good round-trip deal

$269 or less

Good one-way deal

$144 or less
Provider with most accurate pricing for Chicago (CHI)-Washington, D.C. (WAS) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Washington, D.C. (WAS) flights.
Search Deals
From Illinois to District of Columbia
Search Deals
One-way flight from Illinois to District of Columbia
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($22 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Illinois to District of Columbia.
Search Deals
Price to beat on a one-way flight from Illinois to District of Columbia.
Search Deals

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 January 31, 2026.
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.

MDW - IAD

MDWIAD

Chicago Midway

Mon 3/16

6:05 am-12:31 am

1 stop17h 26m

Washington, D.C. Dulles Intl

Wed 3/18

6:20 am-10:19 pm

1 stop16h 59m

$160

ChicagoWashington, D.C.

MDW - IAD

MDWIAD

Chicago Midway

Thu 3/12

2:41 pm-12:31 am

1 stop8h 50m

Washington, D.C. Dulles Intl

Sun 3/15

6:20 am-7:47 pm

1 stop14h 27m

$183

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Tue 2/24

7:40 pm-10:52 pm

Nonstop2h 12m

Washington, D.C. Reagan-National

Wed 2/25

5:05 pm-6:29 pm

Nonstop2h 24m

$197

ChicagoWashington, D.C.

MDW - DCA

MDWDCA

Chicago Midway

Wed 3/18

8:30 pm-11:15 pm

Nonstop1h 45m

Washington, D.C. Reagan-National

Tue 3/24

3:35 pm-4:50 pm

Nonstop2h 15m

$197

ChicagoWashington, D.C.

MDW - DCA

MDWDCA

Chicago Midway

Tue 4/28

1:55 pm-6:40 pm

1 stop3h 45m

Washington, D.C. Reagan-National

Wed 4/29

7:55 am-9:00 am

Nonstop2h 05m

$203

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Mon 3/9

10:00 am-6:55 pm

1 stop7h 55m

Washington, D.C. Reagan-National

Tue 3/10

6:00 am-11:48 am

1 stop6h 48m

$207

ChicagoWashington, D.C.

ORD - IAD

ORDIAD

Chicago O'Hare Intl

Sat 2/21

8:50 am-11:49 am

Nonstop1h 59m

Washington, D.C. Dulles Intl

Wed 2/25

1:02 pm-2:20 pm

Nonstop2h 18m

$214

ChicagoWashington, D.C.

MDW - DCA

MDWDCA

Chicago Midway

Sat 2/28

6:25 am-9:20 am

Nonstop1h 55m

Washington, D.C. Reagan-National

Tue 3/3

11:15 am-12:25 pm

Nonstop2h 10m

$214

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Wed 4/1

1:57 pm-6:59 pm

1 stop4h 02m

Washington, D.C. Reagan-National

Tue 4/7

7:30 am-11:35 am

1 stop5h 05m

$217

ChicagoWashington, D.C.

ORD - DCA

ORDDCA

Chicago O'Hare Intl

Tue 2/24

6:45 am-12:40 pm

1 stop4h 55m

Washington, D.C. Reagan-National

Tue 2/24

7:30 pm-11:56 pm

1 stop5h 26m

$217

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/31

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, February is the cheapest month in which you can book a flight from Illinois to District of Columbia (average of $57). Flying from Illinois to District of Columbia in April is currently the most expensive (average of $157). 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 January 31, 2026.

One of the essential ways to save on airfare from Illinois to District of Columbia is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the morning could potentially save you up to 22% on airfare.

What is the cheapest day to fly from Illinois to District of Columbia?

Use this chart to determine the cheapest time to fly round-trip from Illinois to District of Columbia. Price data was last updated on January 31, 2026.

Travelers seeking maximum savings on their Illinois to District of Columbia flight should consider departing on Monday at noon when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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 January 31, 2026.

The most flights from USIL to USDC are scheduled on a Friday (20 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (9 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 January 31, 2026.
Read through reviews of airlines operating flights from Illinois to District of Columbia, such as Southwest, United Airlines, and American 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
4,267 reviews

Overall

8.0

Crew

8.6

Comfort

8.0

Boarding

8.1

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
8.0
Very good
4,267 reviews
Southwest
8.0
Very good
4,267 reviews

Overall

8.0

Crew

8.6

Comfort

8.0

Boarding

8.1

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
United Airlines
7.4
Good
9,219 reviews
Southwest
8.0
Very good
4,267 reviews

Overall

8.0

Crew

8.6

Comfort

8.0

Boarding

8.1

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,213 reviews
Southwest
8.0
Very good
4,267 reviews

Overall

8.0

Crew

8.6

Comfort

8.0

Boarding

8.1

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Spirit Airlines
6.3
Okay
8,396 reviews
Southwest
8.0
Very good
4,267 reviews

Overall

8.0

Crew

8.6

Comfort

8.0

Boarding

8.1

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Frontier
5.7
Fair
3,054 reviews
Southwest
8.0
Very good
4,267 reviews

Overall

8.0

Crew

8.6

Comfort

8.0

Boarding

8.1

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

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 Frontier, with whom users have recently found tickets for as low as $36. However, be on the lookout for offers from Spirit Airlines and American Airlines, 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, February is the cheapest month in which you can book a flight from Illinois to District of Columbia (average of $57). Flying from Illinois to District of Columbia in April is currently the most expensive (average of $157). 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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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 7 airlines flying from Illinois to District of Columbia

Discover the top 7 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 January 31, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$42Average$118FlexibilityNo cancel feeOn-time65%
FrontierCheapest$57Average$206FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$114Average$346FlexibilityNo cancel feeOn-time69%
DeltaCheapest$124Average$305FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$141Average$254FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$148Average$392FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$158Average$284FlexibilityNo cancel feeOn-time63%

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