$59+ Cheap flights from District of Columbia to Illinois
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.
IAD — ORD
Feb 28 — Mar 71
1 adult, Economy
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Cheapest flights from District of Columbia to IllinoisExplore the most affordable flight options available from District of Columbia to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 29, 2026.
Explore the most affordable flight options available from District of Columbia to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 29, 2026.
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 2/2311:41 am
IAD
- ORD
1 stop11h 58m
Frontier
Fri 2/274:42 pm
ORD
- IAD
1 stop15h 52m
Frontier
Deal found 1/27![Frontier logo]()
$148
This Priceline deal was found by Cheapflights users on 1/27. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/2311:41 am
IAD
- MDW
1 stop9h 06m
Frontier
Mon 3/26:00 am
MDW
- IAD
1 stop9h 08m
Frontier
Deal found 1/27![Frontier logo]()
$148
This Frontier deal was found by Cheapflights users on 1/27. 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.
Mon 2/235:22 pm
IAD
- ORD
1 stop6h 17m
Frontier
Mon 3/25:05 am
ORD
- IAD
1 stop10h 03m
Frontier
Deal found 1/27![Frontier logo]()
$149
This Frontier deal was found by Cheapflights users on 1/28. 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 2/2611:22 am
IAD
- MDW
1 stop5h 54m
Frontier
Mon 3/26:00 am
MDW
- IAD
1 stop9h 08m
Frontier
Deal found 1/28![Frontier logo]()
$150
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 2/235:22 pm
IAD
- ORD
1 stop6h 17m
Multiple Airlines
Thu 2/267:23 pm
ORD
- IAD
1 stop21h 44m
Multiple Airlines
Deal found 1/27![Multiple Airlines logo]()
$151
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 2/2110:29 am
IAD
- ORD
1 stop13h 10m
Multiple Airlines
Wed 2/258:16 pm
ORD
- IAD
2 stops19h 27m
Multiple Airlines
Deal found 1/28![Multiple Airlines logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 2/235:22 pm
IAD
- ORD
1 stop18h 29m
Frontier
Sat 2/284:42 pm
ORD
- IAD
1 stop16h 48m
Frontier
Deal found 1/27![Frontier logo]()
$156
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 2/2611:22 am
IAD
- MDW
1 stop5h 54m
Frontier
Thu 3/57:30 am
MDW
- IAD
1 stop8h 13m
Frontier
Deal found 1/28![Frontier logo]()
$156
This Super.com deal was found by Cheapflights users on 1/27. 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 2/2611:22 am
IAD
- ORD
1 stop12h 17m
Frontier
Wed 3/48:30 am
ORD
- IAD
1 stop23h 55m
Frontier
Deal found 1/27![Frontier logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 2/2311:41 am
IAD
- ORD
1 stop11h 58m
Multiple Airlines
Wed 2/257:23 pm
ORD
- IAD
2 stops20h 20m
Multiple Airlines
Deal found 1/28![Multiple Airlines logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 2/275:37 pm
IAD
- MDW
1 stop6h 00m
Frontier
Thu 3/57:30 am
MDW
- IAD
1 stop8h 13m
Frontier
Deal found 1/28![Frontier logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 1/26. 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 2/2611:22 am
IAD
- ORD
1 stop12h 17m
Multiple Airlines
Thu 3/512:44 pm
ORD
- IAD
1 stop17h 40m
Multiple Airlines
Deal found 1/26![Multiple Airlines logo]()
$161
Find flight deals from District of Columbia to Illinois
Keep the following information in mind while searching for District of Columbia to Illinois flight deals. Data was last updated January 29, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $148 (Kiwi.com) |
One-way from | $59 (WAYA) |
Popular in | December |
Cheapest in | September |
Average price | $253 |
Good round-trip deal | $297 or less |
Good one-way deal | $175 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from District of Columbia to Illinois 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 29, 2026.
Use the filters below to find and compare flights from District of Columbia to Illinois that are best for you.
Fly from
District of Columbia
Fly to
Illinois
Route
Depart
Return
Price
Washington, D.C.Chicago
IAD - MDW
IADMDW
Washington, D.C. Dulles Intl
Thu 2/12
5:37 pm-10:34 pm
1 stop5h 57m
Chicago Midway
Mon 2/23
6:00 am-4:08 pm
1 stop9h 08m
$193
Washington, D.C.Chicago
DCA - ORD
DCAORD
Washington, D.C. Reagan-National
Thu 2/26
6:00 am-11:54 am
1 stop6h 54m
Chicago O'Hare Intl
Wed 3/4
10:00 am-5:49 pm
1 stop6h 49m
$207
Washington, D.C.Chicago
DCA - ORD
DCAORD
Washington, D.C. Reagan-National
Mon 3/2
6:00 am-11:49 am
1 stop6h 49m
Chicago O'Hare Intl
Wed 3/4
10:00 am-5:49 pm
1 stop6h 49m
$207
Washington, D.C.Chicago
IAD - ORD
IADORD
Washington, D.C. Dulles Intl
Sat 2/21
10:30 pm-11:43 pm
Nonstop2h 13m
Chicago O'Hare Intl
Tue 2/24
1:02 pm-4:05 pm
Nonstop2h 03m
$214
Washington, D.C.Chicago
IAD - MDW
IADMDW
Washington, D.C. Dulles Intl
Thu 2/26
11:22 am-10:29 pm
1 stop12h 07m
Chicago Midway
Thu 3/5
5:16 pm-7:24 am
2 stops13h 08m
$214
Washington, D.C.Chicago
IAD - MDW
IADMDW
Washington, D.C. Dulles Intl
Thu 4/30
8:09 am-8:04 am
1 stop24h 55m
Chicago Midway
Sun 5/3
9:14 am-7:27 am
1 stop21h 13m
$215
Washington, D.C.Chicago
IAD - MDW
IADMDW
Washington, D.C. Dulles Intl
Wed 2/25
6:00 am-8:54 am
1 stop3h 54m
Chicago Midway
Wed 3/4
6:20 pm-11:09 pm
1 stop3h 49m
$217
Washington, D.C.Chicago
IAD - MDW
IADMDW
Washington, D.C. Dulles Intl
Thu 2/12
5:37 pm-10:34 pm
1 stop5h 57m
Chicago Midway
Sat 2/21
6:00 am-10:15 am
1 stop27h 15m
$220
Washington, D.C.Chicago
DCA - ORD
DCAORD
Washington, D.C. Reagan-National
Mon 4/20
11:55 am-1:15 pm
Nonstop2h 20m
Chicago O'Hare Intl
Wed 4/22
6:00 am-8:56 am
Nonstop1h 56m
$221
Washington, D.C.Chicago
DCA - MDW
DCAMDW
Washington, D.C. Reagan-National
Wed 3/11
12:40 pm-7:20 pm
1 stop7h 40m
Chicago Midway
Mon 3/16
8:45 pm-11:30 pm
Nonstop1h 45m
$231
Showing 1-10 of 60 results
Best time to book a flight from District of Columbia to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from District of Columbia 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 District of Columbia to Illinois
What is the cheapest month to book a flight from District of Columbia to Illinois?
Currently, March is the cheapest month in which you can book a flight from District of Columbia to Illinois (average of $55). Flying from District of Columbia to Illinois in June is currently the most expensive (average of $133). 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 DC to IL?
Find hourly flight availability from District of Columbia to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 29, 2026.
When flying from District of Columbia to Illinois, 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 26% versus a flight in the morning.
What is the cheapest day to fly from District of Columbia to Illinois?
Use this chart to determine the cheapest time to fly round-trip from District of Columbia to Illinois. Price data was last updated on January 24, 2026.
Travelers seeking maximum savings on their District of Columbia to Illinois flight should consider departing on Saturday at noon when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from District of Columbia to Illinois
Explore weekly flight availability from District of Columbia to Illinois. 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 29, 2026.
The most flights from USDC to USIL are scheduled on a Tuesday (20 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (11 on average).
Reviews of airlines servicing Illinois
Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated January 29, 2026.
See what other customers who have flown with Southwest, United Airlines, and American Airlines from District of Columbia to Illinois have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Food
7.0
Crew
8.6
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Food
7.0
Crew
8.6
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Food
7.0
Crew
8.6
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Food
7.0
Crew
8.6
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Food
7.0
Crew
8.6
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Food
7.0
Crew
8.6
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Related info for your journey
Find useful and relevant information for your journey from District of Columbia to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for District of Columbia to Illinois
See prices for flight routes from nearby airports that may be better suited for you.
Top 6 airlines flying from District of Columbia to Illinois
Discover the top 6 airlines that operate flights from District of Columbia to Illinois. 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 29, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$41 | Average$115 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$57 | Average$168 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$131 | Average$348 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$148 | Average$299 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$154 | Average$407 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$194 | Average$404 | FlexibilityNo cancel fee | On-timeN/A |