$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 3 — Mar 101
1 adult, Economy
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Find cheap flights from Illinois to District of Columbia with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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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
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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 February 1, 2026.
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 February 1, 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![Multiple Airlines logo]()
$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![Frontier logo]()
$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![Frontier logo]()
$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![Frontier logo]()
$144
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.
Fri 2/277:53 pm
MDW
- IAD
1 stop12h 41m
Frontier
Mon 3/25:22 pm
IAD
- MDW
1 stop26h 45m
Frontier
Deal found 1/31![Frontier logo]()
$147
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![Frontier logo]()
$147
This Priceline 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/26:00 am
MDW
- IAD
1 stop9h 08m
Frontier
Mon 3/25:22 pm
IAD
- MDW
1 stop6h 07m
Frontier
Deal found 1/29![Frontier logo]()
$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![Multiple Airlines logo]()
$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![Frontier logo]()
$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![Multiple Airlines logo]()
$153
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.
Sun 3/19:04 pm
MDW
- IAD
1 stop12h 36m
Frontier
Thu 3/511:22 am
IAD
- MDW
1 stop12h 07m
Frontier
Deal found 1/29![Frontier logo]()
$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![Frontier logo]()
$154
Best flights from Illinois to District of ColumbiaDiscover carefully curated flight deals from Illinois to District of Columbia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 1, 2026.
Discover carefully curated flight deals from Illinois to District of Columbia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 1, 2026.
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 stop12h 07m
Frontier
Deal found 1/31![Frontier logo]()
$163
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/287:40 pm
ORD
- DCA
Nonstop2h 12m
United Airlines
Tue 3/33:30 pm
DCA
- ORD
Nonstop2h 21m
United Airlines
Deal found 1/31![United Airlines logo]()
$182
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/188:30 pm
MDW
- DCA
Nonstop1h 45m
Southwest
Tue 3/243:35 pm
DCA
- MDW
Nonstop2h 15m
Southwest
Deal found 1/31![Southwest logo]()
$197
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/106:00 am
ORD
- DCA
1 stop5h 53m
Delta
Wed 3/1112:29 pm
DCA
- ORD
1 stop5h 14m
Delta
Deal found 1/30![Delta logo]()
$217
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/212:50 pm
PIA
- DCA
1 stop7h 09m
American Airlines
Sat 2/286:00 am
DCA
- PIA
1 stop4h 27m
American Airlines
Deal found 1/31![American Airlines logo]()
$250
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.
Fri 3/69:51 pm
MDW
- IAD
1 stop8h 33m
Multiple Airlines
Sun 3/88:09 am
IAD
- MDW
2 stops12h 38m
Multiple Airlines
Deal found 1/31![Multiple Airlines logo]()
$255
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/281:55 pm
MDW
- DCA
1 stop3h 45m
Southwest
Wed 4/297:55 am
DCA
- MDW
Nonstop2h 05m
Southwest
Deal found 1/29![Southwest logo]()
$203
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/218:50 am
ORD
- IAD
Nonstop1h 59m
United Airlines
Wed 2/251:02 pm
IAD
- ORD
Nonstop2h 18m
United Airlines
Deal found 1/30![United Airlines logo]()
$214
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/246:00 am
MDW
- IAD
1 stop4h 35m
Delta
Tue 2/243:42 pm
IAD
- MDW
1 stop7h 51m
Delta
Deal found 1/30![Delta logo]()
$217
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.
Fri 2/136:48 pm
MDW
- IAD
1 stop14h 54m
Frontier
Mon 2/165:22 pm
IAD
- MDW
1 stop26h 45m
Frontier
Deal found 1/31![Frontier logo]()
$225
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/286:25 am
MDW
- DCA
Nonstop1h 55m
Southwest
Tue 3/311:15 am
DCA
- MDW
Nonstop2h 10m
Southwest
Deal found 1/31![Southwest logo]()
$214
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/146:00 am
MDW
- IAD
1 stop4h 46m
Delta
Tue 4/145:27 pm
IAD
- MDW
1 stop6h 01m
Delta
Deal found 1/30![Delta logo]()
$217
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/218:00 am
ORD
- DCA
Nonstop1h 59m
United Airlines
Sat 4/258:20 am
DCA
- ORD
Nonstop2h 21m
United Airlines
Deal found 1/29![United Airlines logo]()
$221
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.
Thu 3/262:41 pm
MDW
- IAD
1 stop8h 50m
Frontier
Wed 4/13:15 pm
IAD
- MDW
1 stop5h 52m
Frontier
Deal found 1/31![Frontier logo]()
$235
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/172:40 pm
ORD
- DCA
1 stop7h 15m
Southwest
Tue 3/249:05 am
DCA
- ORD
1 stop4h 45m
Southwest
Deal found 1/30![Southwest logo]()
$217
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/187:10 am
ORD
- IAD
1 stop3h 22m
Delta
Tue 3/2412:47 pm
IAD
- ORD
1 stop5h 02m
Delta
Deal found 1/30![Delta logo]()
$217
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/203:33 pm
MLI
- IAD
1 stop6h 20m
American Airlines
Mon 2/235:37 pm
IAD
- MLI
1 stop6h 51m
American Airlines
Deal found 1/30![American Airlines logo]()
$269
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/232:30 pm
ORD
- IAD
Nonstop2h 00m
United Airlines
Tue 3/2410:31 pm
IAD
- ORD
Nonstop2h 13m
United Airlines
Deal found 1/30![United Airlines logo]()
$228
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/206:00 am
MDW
- IAD
1 stop10h 13m
Frontier
Sun 2/225:39 pm
IAD
- MDW
1 stop5h 46m
Frontier
Deal found 1/31![Frontier logo]()
$240
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/1911:31 am
BMI
- DCA
1 stop6h 24m
American Airlines
Sun 2/227:42 am
DCA
- BMI
1 stop4h 19m
American Airlines
Deal found 1/30![American Airlines logo]()
$274
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/281:00 pm
ORD
- DCA
1 stop7h 55m
Southwest
Tue 3/36:05 am
DCA
- ORD
1 stop7h 10m
Southwest
Deal found 1/31![Southwest logo]()
$231
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/287:40 pm
ORD
- DCA
Nonstop2h 12m
United Airlines
Sat 3/77:30 am
DCA
- ORD
Nonstop2h 20m
United Airlines
Deal found 1/30![United Airlines logo]()
$238
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/2110:35 am
ORD
- DCA
1 stop6h 10m
Delta
Tue 2/248:55 am
DCA
- ORD
1 stop14h 10m
Delta
Deal found 1/31![Delta logo]()
$239
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.
Thu 2/126:25 am
MDW
- IAD
1 stop27h 19m
Frontier
Sun 2/155:39 pm
IAD
- MDW
1 stop5h 46m
Frontier
Deal found 1/31![Frontier logo]()
$246
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/1912:35 pm
ORD
- DCA
Nonstop1h 57m
United Airlines
Sat 2/215:05 pm
DCA
- ORD
Nonstop2h 24m
United Airlines
Deal found 1/29![United Airlines logo]()
$238
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/312:36 pm
MLI
- IAD
1 stop6h 54m
American Airlines
Wed 3/411:30 am
IAD
- MLI
2 stops12h 58m
American Airlines
Deal found 1/31![American Airlines logo]()
$290
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/235:50 pm
ORD
- DCA
1 stop4h 15m
Delta
Tue 3/249:40 am
DCA
- ORD
1 stop4h 37m
Delta
Deal found 1/30![Delta logo]()
$241
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/227:25 pm
MDW
- DCA
Nonstop1h 50m
Southwest
Mon 4/277:55 am
DCA
- MDW
Nonstop2h 05m
Southwest
Deal found 1/31![Southwest logo]()
$245
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/162:41 pm
MDW
- IAD
1 stop8h 50m
Frontier
Mon 3/238:09 am
IAD
- MDW
1 stop7h 12m
Frontier
Deal found 1/30![Frontier logo]()
$262
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/217:00 am
ORD
- DCA
Nonstop1h 55m
United Airlines
Sun 2/227:30 am
DCA
- ORD
Nonstop2h 20m
United Airlines
Deal found 1/31![United Airlines logo]()
$241
Last-minute flights from Illinois to District of ColumbiaDiscover last-minute flight deals from Illinois to District of Columbia. Data last updated February 1, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to District of Columbia. Data last updated February 1, 2026 and is based on user searches.
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![Frontier logo]()
$144
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 2/199:05 am
MDW
- IAD
1 stop6h 38m
Frontier
Mon 2/235:22 pm
IAD
- MDW
1 stop6h 07m
Frontier
Deal found 1/31![Frontier logo]()
$154
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 2/195:05 am
ORD
- IAD
1 stop10h 38m
Frontier
Mon 2/235:22 pm
IAD
- ORD
1 stop6h 17m
Frontier
Deal found 1/30![Frontier logo]()
$154
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 2/206:40 am
ORD
- IAD
2 stops25h 54m
Frontier
Mon 2/235:22 pm
IAD
- ORD
1 stop18h 29m
Frontier
Deal found 1/30![Frontier logo]()
$164
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.
Wed 2/256:02 pm
ORD
- IAD
1 stop15h 31m
Multiple Airlines
Thu 3/126:30 am
IAD
- ORD
2 stops11h 45m
Multiple Airlines
Deal found 1/30![Multiple Airlines logo]()
$165
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/265:05 am
ORD
- IAD
1 stop10h 38m
Frontier
Mon 3/25:22 pm
IAD
- ORD
1 stop6h 17m
Frontier
Deal found 1/30![Frontier logo]()
$155
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/266:25 am
MDW
- IAD
1 stop9h 18m
Frontier
Mon 3/25:22 pm
IAD
- MDW
1 stop6h 07m
Frontier
Deal found 1/30![Frontier logo]()
$159
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.
Fri 2/277:53 pm
MDW
- IAD
1 stop12h 41m
Frontier
Mon 3/25:22 pm
IAD
- MDW
1 stop26h 45m
Frontier
Deal found 1/31![Frontier logo]()
$147
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![Frontier logo]()
$147
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.
Fri 2/277:53 pm
MDW
- IAD
1 stop12h 41m
Multiple Airlines
Mon 3/27:05 pm
IAD
- MDW
2 stops25h 02m
Multiple Airlines
Deal found 1/31![Multiple Airlines logo]()
$173
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![Frontier logo]()
$143
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![Multiple Airlines logo]()
$148
One-way flights from Illinois to District of ColumbiaSearch for one-way flight options from Illinois to District of Columbia. Find affordable one-way fares based on user searches. Data last updated February 1, 2026.
Search for one-way flight options from Illinois to District of Columbia. Find affordable one-way fares based on user searches. Data last updated February 1, 2026.
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1111:32 am
STL
- IAD
1 stop11h 59m
Frontier
Deal found 1/30![Frontier logo]()
$54
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1811:32 am
STL
- IAD
1 stop11h 49m
Frontier
Deal found 1/30![Frontier logo]()
$59
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/2411:27 am
STL
- IAD
1 stop11h 29m
Frontier
Deal found 1/30![Frontier logo]()
$63
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/711:21 am
STL
- IAD
1 stop12h 15m
Frontier
Deal found 1/30![Frontier logo]()
$65
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.
Wed 2/253:49 pm
STL
- IAD
1 stop16h 36m
Frontier
Deal found 1/30![Frontier logo]()
$66
This Super.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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/258:30 am
ORD
- IAD
1 stop23h 55m
Frontier
Deal found 1/30![Frontier logo]()
$69
This Booking.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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/212:51 pm
STL
- DCA
1 stop25h 08m
Frontier
Deal found 1/30![Frontier logo]()
$70
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.
Wed 3/186:05 am
MDW
- IAD
1 stop17h 16m
Frontier
Deal found 1/31![Frontier logo]()
$72
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.
Wed 4/158:13 pm
STL
- IAD
1 stop11h 43m
Frontier
Deal found 1/31![Frontier logo]()
$72
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/231:54 pm
STL
- DCA
1 stop7h 05m
Frontier
Deal found 1/30![Frontier logo]()
$74
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.
Sat 3/76:00 am
MDW
- IAD
1 stop17h 31m
Frontier
Deal found 1/30![Frontier logo]()
$74
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/256:05 am
MDW
- IAD
1 stop17h 16m
Frontier
Deal found 1/30![Frontier logo]()
$75
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 February 1, 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 | $229 |
Good round-trip deal | $269 or less |
Good one-way deal | $144 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 February 1, 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
Sun 3/1
9:04 pm-10:40 am
1 stop12h 36m
Washington, D.C. Dulles Intl
Thu 3/5
11:22 am-10:29 pm
1 stop12h 07m
$163
ChicagoWashington, D.C.
ORD - DCA
ORDDCA
Chicago O'Hare Intl
Sat 2/28
7:40 pm-10:52 pm
Nonstop2h 12m
Washington, D.C. Reagan-National
Tue 3/3
3:30 pm-4:51 pm
Nonstop2h 21m
$182
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 - 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
Tue 3/10
6:00 am-12:53 pm
1 stop5h 53m
Washington, D.C. Reagan-National
Wed 3/11
12:29 pm-4:43 pm
1 stop5h 14m
$217
ChicagoWashington, D.C.
MDW - IAD
MDWIAD
Chicago Midway
Tue 2/24
6:00 am-11:35 am
1 stop4h 35m
Washington, D.C. Dulles Intl
Tue 2/24
3:42 pm-10:33 pm
1 stop7h 51m
$217
ChicagoWashington, D.C.
MDW - IAD
MDWIAD
Chicago Midway
Tue 4/14
6:00 am-11:46 am
1 stop4h 46m
Washington, D.C. Dulles Intl
Tue 4/14
5:27 pm-10:28 pm
1 stop6h 01m
$217
ChicagoWashington, D.C.
ORD - DCA
ORDDCA
Chicago O'Hare Intl
Tue 3/17
2:40 pm-10:55 pm
1 stop7h 15m
Washington, D.C. Reagan-National
Tue 3/24
9:05 am-12:50 pm
1 stop4h 45m
$217
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.
ORD-IAD
MDW-IAD
STL-IAD
STL-DCA
ORD-DCA
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
USIL-USDC
ORD-IAD
MDW-IAD
STL-IAD
STL-DCA
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 February 1, 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 February 1, 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 February 1, 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.
Boarding
8.1
Crew
8.6
Entertainment
7.5
Overall
8.0
Comfort
8.0
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Crew
8.6
Entertainment
7.5
Overall
8.0
Comfort
8.0
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Crew
8.6
Entertainment
7.5
Overall
8.0
Comfort
8.0
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Crew
8.6
Entertainment
7.5
Overall
8.0
Comfort
8.0
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Crew
8.6
Entertainment
7.5
Overall
8.0
Comfort
8.0
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Crew
8.6
Entertainment
7.5
Overall
8.0
Comfort
8.0
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Related info for your journey
Find useful and relevant information for your journey from 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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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 February 1, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$42 | Average$118 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$57 | Average$206 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$114 | Average$346 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$124 | Average$305 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$141 | Average$254 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$148 | Average$392 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$158 | Average$284 | FlexibilityNo cancel fee | On-time63% |