$68+ 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 1/28. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — IAD
Jan 16 — Jan 231
1 adult, Economy
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Illinois to District of Columbia
Cheapest flights from Illinois to District of ColumbiaExplore 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 December 17, 2025.
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 December 17, 2025.
This Frontier deal was found by Cheapflights users on 12/16. 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 12/256:12 amMDW - IAD
1 stop11h 04mFrontier
Wed 1/75:42 pmIAD - MDW
1 stop5h 35mFrontier
Deal found 12/16![Frontier logo]()
$188
This Frontier deal was found by Cheapflights users on 12/16. 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.
Tue 12/306:14 amMDW - IAD
1 stop9h 23mFrontier
Wed 1/75:42 pmIAD - MDW
1 stop5h 35mFrontier
Deal found 12/16![Frontier logo]()
$213
This Priceline deal was found by Cheapflights users on 12/15. 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.
Tue 12/3010:48 amSTL - IAD
1 stop4h 49mFrontier
Sun 1/45:35 amIAD - STL
1 stop5h 05mFrontier
Deal found 12/15![Frontier logo]()
$214
This CheapOair deal was found by Cheapflights users on 12/14. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/306:00 amORD - IAD
1 stop9h 37mFrontier
Sat 1/310:15 pmIAD - ORD
1 stop21h 44mFrontier
Deal found 12/14![Frontier logo]()
$215
This United Airlines deal was found by Cheapflights users on 12/14. 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 12/246:00 pmORD - DCA
Nonstop1h 59mUnited Airlines
Thu 1/17:30 amDCA - ORD
Nonstop2h 32mUnited Airlines
Deal found 12/14![United Airlines logo]()
$223
This Southwest deal was found by Cheapflights users on 12/14. 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.
Wed 12/247:30 amMDW - DCA
Nonstop1h 45mSouthwest
Wed 12/316:55 pmDCA - MDW
Nonstop2h 05mSouthwest
Deal found 12/14![Southwest logo]()
$223
This United Airlines deal was found by Cheapflights users on 12/16. 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.
Thu 12/259:15 pmORD - IAD
Nonstop2h 00mUnited Airlines
Wed 12/3110:33 pmIAD - ORD
Nonstop2h 11mUnited Airlines
Deal found 12/16![United Airlines logo]()
$223
This Booking.com deal was found by Cheapflights users on 12/15. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/247:43 pmSTL - DCA
1 stop16h 18mFrontier
Tue 12/308:00 amDCA - STL
1 stop27h 02mFrontier
Deal found 12/15![Frontier logo]()
$226
This American Airlines deal was found by Cheapflights users on 12/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/256:02 amSTL - DCA
Nonstop2h 08mAmerican Airlines
Wed 12/312:55 pmDCA - STL
Nonstop2h 31mAmerican Airlines
Deal found 12/15![American Airlines logo]()
$227
This United Airlines deal was found by Cheapflights users on 12/16. 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 12/318:58 pmORD - DCA
Nonstop2h 01mUnited Airlines
Tue 1/610:30 amDCA - ORD
Nonstop2h 16mUnited Airlines
Deal found 12/16![United Airlines logo]()
$227
This Southwest deal was found by Cheapflights users on 12/16. 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.
Wed 12/317:30 amMDW - DCA
Nonstop1h 45mSouthwest
Tue 1/66:55 pmDCA - MDW
Nonstop2h 10mSouthwest
Deal found 12/16![Southwest logo]()
$227
This United Airlines deal was found by Cheapflights users on 12/16. 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 12/316:21 pmORD - IAD
Nonstop2h 00mUnited Airlines
Tue 1/61:05 pmIAD - ORD
Nonstop2h 20mUnited Airlines
Deal found 12/16![United Airlines logo]()
$227
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 December 17, 2025.
Most accurate provider | CheapOair 3 stars |
|---|---|
Most trusted provider | CheapOair 3 stars |
Round-trip from | $157 (Kiwi.com) |
One-way from | $68 (Kiwi.com) |
Popular in | November |
Cheapest in | August |
Average price | $237 |
Good round-trip deal | $309 or less |
Good one-way deal | $174 or less |
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 December 17, 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.
MDW - IAD
MDWIAD
Chicago Midway
Thu 1/22
6:20 am-4:28 pm
1 stop9h 08m
Washington, D.C. Dulles Intl
Mon 1/26
5:33 pm-10:19 pm
1 stop5h 46m
$162
ChicagoWashington, D.C.
MDW - IAD
MDWIAD
Chicago Midway
Wed 1/7
3:01 pm-1:01 pm
1 stop21h 00m
Washington, D.C. Dulles Intl
Tue 1/13
6:00 am-10:34 am
1 stop5h 34m
$163
ChicagoWashington, D.C.
MDW - IAD
MDWIAD
Chicago Midway
Fri 1/23
5:01 pm-10:44 am
1 stop16h 43m
Washington, D.C. Dulles Intl
Mon 1/26
1:31 pm-7:58 pm
1 stop7h 27m
$169
ChicagoWashington, D.C.
MDW - IAD
MDWIAD
Chicago Midway
Fri 1/16
8:28 am-9:13 pm
1 stop11h 45m
Washington, D.C. Dulles Intl
Mon 1/19
10:08 pm-12:05 pm
1 stop14h 57m
$174
ChicagoWashington, D.C.
MDW - IAD
MDWIAD
Chicago Midway
Sun 1/25
5:01 pm-4:28 pm
1 stop22h 27m
Washington, D.C. Dulles Intl
Mon 2/2
5:33 pm-12:05 pm
1 stop19h 32m
$174
ChicagoWashington, D.C.
ORD - DCA
ORDDCA
Chicago O'Hare Intl
Thu 1/8
7:45 am-4:19 pm
1 stop7h 34m
Washington, D.C. Reagan-National
Sun 1/11
1:00 pm-5:43 pm
1 stop5h 43m
$197
ChicagoWashington, D.C.
ORD - DCA
ORDDCA
Chicago O'Hare Intl
Sat 1/17
7:45 am-5:04 pm
1 stop8h 19m
Washington, D.C. Reagan-National
Wed 1/21
10:05 am-5:43 pm
1 stop8h 38m
$197
ChicagoWashington, D.C.
ORD - DCA
ORDDCA
Chicago O'Hare Intl
Wed 1/14
7:45 am-5:34 pm
1 stop8h 49m
Washington, D.C. Reagan-National
Wed 1/21
10:05 am-5:43 pm
1 stop8h 38m
$197
ChicagoWashington, D.C.
ORD - DCA
ORDDCA
Chicago O'Hare Intl
Thu 1/15
7:45 am-5:34 pm
1 stop8h 49m
Washington, D.C. Reagan-National
Wed 1/21
11:55 am-5:43 pm
1 stop6h 48m
$197
ChicagoWashington, D.C.
ORD - DCA
ORDDCA
Chicago O'Hare Intl
Tue 1/6
10:55 am-6:49 pm
1 stop6h 54m
Washington, D.C. Reagan-National
Sun 1/11
10:05 am-5:43 pm
1 stop8h 38m
$197
Showing 1-10 of 60 results
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 $58). Flying from Illinois to District of Columbia in April is currently the most expensive (average of $169). 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 December 17, 2025.
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 in the afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 24% 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 December 16, 2024.
Travelers seeking maximum savings on their Illinois to District of Columbia flight should consider departing on Monday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
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 December 17, 2025.
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.
Entertainment
7.5
Overall
7.9
Comfort
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Overall
7.9
Comfort
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Overall
7.9
Comfort
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Overall
7.9
Comfort
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Overall
7.9
Comfort
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Entertainment
7.5
Overall
7.9
Comfort
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
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.
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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.
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 December 17, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$45 | Average$147 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$58 | Average$190 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$142 | Average$341 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$149 | Average$384 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$152 | Average$268 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$157 | Average$284 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$166 | Average$295 | FlexibilityNo cancel fee | On-timeN/A |