$89+ Cheap flights from Reagan-National (DCA) 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 9/5. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — ORD
Sep 10 — Sep 171
Round-trip
1 adult, Economy
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Cheapest flights from Reagan-National to IllinoisExplore the most affordable flight options available from Reagan-National to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 11, 2026.
Explore the most affordable flight options available from Reagan-National to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 11, 2026.
This United Airlines deal was found by Cheapflights users on 8/11. 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.
Fri 10/309:30 am -
Nonstop2h 20m
Mon 11/26:00 am -
Nonstop1h 56m
Deal found 8/11![United Airlines logo]()
$184
This American Airlines deal was found by Cheapflights users on 8/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/116:30 am -
Nonstop2h 28m
Mon 9/146:55 am -
Nonstop2h 04m
Deal found 8/10![American Airlines logo]()
$185
This Southwest deal was found by Cheapflights users on 8/10. 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 9/119:15 pm -
Nonstop2h 00m
Tue 9/158:40 am -
2 stops6h 10m
Deal found 8/10![Southwest logo]()
$185
This United Airlines deal was found by Cheapflights users on 8/10. 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.
Thu 9/37:46 am -
Nonstop2h 14m
Sat 9/53:00 pm -
Nonstop2h 09m
Deal found 8/10![United Airlines logo]()
$186
This Southwest deal was found by Cheapflights users on 8/7. 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.
Sun 9/66:00 am -
Nonstop1h 55m
Sun 9/68:55 am -
1 stop6h 00m
Deal found 8/7![Southwest logo]()
$187
This Trip.com deal was found by Cheapflights users on 8/6. 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.
Mon 8/317:00 am -
1 stop7h 36m
Tue 9/12:41 pm -
1 stop30h 18m
Deal found 8/6![Frontier logo]()
$188
This Southwest deal was found by Cheapflights users on 8/9. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/113:35 pm -
Nonstop2h 05m
Sat 9/1210:05 am -
2 stops9h 45m
Deal found 8/9![Southwest logo]()
$188
This Southwest deal was found by Cheapflights users on 8/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/113:15 pm -
1 stop4h 40m
Mon 9/148:15 am -
1 stop5h 40m
Deal found 8/11![Southwest logo]()
$189
This Southwest deal was found by Cheapflights users on 8/10. 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 10/306:50 pm -
1 stop5h 15m
Tue 11/311:30 am -
1 stop3h 50m
Deal found 8/10![Southwest logo]()
$190
This United Airlines deal was found by Cheapflights users on 8/10. 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.
Mon 9/148:30 am -
Nonstop2h 15m
Thu 9/1711:15 am -
Nonstop2h 08m
Deal found 8/10![United Airlines logo]()
$191
This Southwest deal was found by Cheapflights users on 8/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/121:00 pm -
Nonstop1h 55m
Mon 9/149:00 pm -
Nonstop1h 55m
Deal found 8/11![Southwest logo]()
$191
This American Airlines deal was found by Cheapflights users on 8/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1210:17 am -
Nonstop2h 24m
Mon 9/147:47 am -
Nonstop2h 05m
Deal found 8/11![American Airlines logo]()
$192
Best flights from Reagan-National to IllinoisDiscover carefully curated flight deals from Reagan-National to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 11, 2026.
Discover carefully curated flight deals from Reagan-National to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 11, 2026.
This Southwest deal was found by Cheapflights users on 8/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/67:25 am -
1 stop6h 00m
Thu 10/86:00 am -
Nonstop1h 50m
Deal found 8/11![Southwest logo]()
$201
This Delta deal was found by Cheapflights users on 8/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/167:40 pm -
1 stop5h 12m
Mon 10/193:40 pm -
1 stop5h 09m
Deal found 8/11![Delta logo]()
$238
This JetBlue deal was found by Cheapflights users on 8/8. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/87:38 am -
1 stop7h 01m
Thu 9/106:00 am -
1 stop7h 58m
Deal found 8/8![JetBlue logo]()
$253
This United Airlines deal was found by Cheapflights users on 8/6. 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 9/149:30 am -
Nonstop2h 17m
Tue 9/157:59 am -
Nonstop2h 01m
Deal found 8/6![United Airlines logo]()
$255
This American Airlines deal was found by Cheapflights users on 8/8. 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.
Wed 9/302:54 pm -
1 stop7h 02m
Tue 10/612:38 pm -
1 stop6h 21m
Deal found 8/8![American Airlines logo]()
$280
This Southwest deal was found by Cheapflights users on 8/10. 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 9/261:20 pm -
1 stop4h 20m
Mon 9/285:45 am -
Nonstop1h 45m
Deal found 8/10![Southwest logo]()
$207
This Delta deal was found by Cheapflights users on 8/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/75:35 pm -
1 stop3h 55m
Fri 10/911:19 am -
1 stop4h 20m
Deal found 8/10![Delta logo]()
$238
This Southwest deal was found by Cheapflights users on 8/10. 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.
Mon 8/311:00 pm -
2 stops5h 50m
Sat 9/57:45 am -
1 stop6h 30m
Deal found 8/10![Southwest logo]()
$219
This JetBlue deal was found by Cheapflights users on 8/8. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/16:00 am -
1 stop8h 39m
Sat 9/53:20 pm -
1 stop7h 13m
Deal found 8/8![JetBlue logo]()
$253
This United Airlines deal was found by Cheapflights users on 8/7. 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 9/111:57 am -
Nonstop2h 16m
Thu 9/37:00 am -
Nonstop1h 59m
Deal found 8/7![United Airlines logo]()
$255
This Delta deal was found by Cheapflights users on 8/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/56:10 am -
1 stop4h 27m
Sat 9/53:44 pm -
1 stop5h 01m
Deal found 8/9![Delta logo]()
$257
This Southwest deal was found by Cheapflights users on 8/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/26:50 pm -
1 stop5h 15m
Thu 10/87:55 am -
1 stop4h 50m
Deal found 8/11![Southwest logo]()
$238
This American Airlines deal was found by Cheapflights users on 8/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/237:16 pm -
1 stop4h 41m
Wed 9/305:28 pm -
1 stop5h 31m
Deal found 8/11![American Airlines logo]()
$293
This JetBlue deal was found by Cheapflights users on 8/7. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/36:00 am -
1 stop8h 39m
Wed 9/93:00 pm -
1 stop7h 27m
Deal found 8/7![JetBlue logo]()
$279
This Delta deal was found by Cheapflights users on 8/8. 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.
Sun 9/66:10 am -
1 stop4h 07m
Wed 9/95:37 pm -
1 stop4h 25m
Deal found 8/8![Delta logo]()
$258
This United Airlines deal was found by Cheapflights users on 8/10. 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.
Tue 9/86:30 am -
1 stop4h 37m
Sat 9/192:05 pm -
1 stop5h 04m
Deal found 8/10![United Airlines logo]()
$295
This American Airlines deal was found by Cheapflights users on 8/7. 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 10/178:35 pm -
1 stop4h 35m
Fri 10/235:30 pm -
1 stop5h 29m
Deal found 8/7![American Airlines logo]()
$306
This Southwest deal was found by Cheapflights users on 8/10. 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.
Tue 9/111:40 am -
2 stops7h 15m
Thu 9/310:10 am -
1 stop3h 45m
Deal found 8/10![Southwest logo]()
$258
This JetBlue deal was found by Cheapflights users on 8/8. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/196:30 am -
1 stop6h 17m
Sat 10/249:38 am -
1 stop5h 27m
Deal found 8/8![JetBlue logo]()
$287
This Delta deal was found by Cheapflights users on 8/7. 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 9/126:00 am -
1 stop5h 13m
Sat 9/195:16 pm -
1 stop5h 28m
Deal found 8/7![Delta logo]()
$271
This United Airlines deal was found by Cheapflights users on 8/6. 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 9/210:30 am -
1 stop5h 27m
Tue 9/83:35 pm -
1 stop4h 34m
Deal found 8/6![United Airlines logo]()
$306
This American Airlines deal was found by Cheapflights users on 8/6. 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.
Wed 9/21:46 pm -
1 stop5h 30m
Tue 9/86:48 pm -
1 stop4h 11m
Deal found 8/6![American Airlines logo]()
$306
This JetBlue deal was found by Cheapflights users on 8/8. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/206:30 am -
1 stop6h 17m
Fri 10/302:15 pm -
1 stop5h 28m
Deal found 8/8![JetBlue logo]()
$287
This Southwest deal was found by Cheapflights users on 8/7. 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 9/512:45 pm -
2 stops7h 50m
Fri 9/116:05 am -
1 stop4h 45m
Deal found 8/7![Southwest logo]()
$262
This Delta deal was found by Cheapflights users on 8/7. 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 10/146:10 am -
1 stop5h 20m
Wed 10/145:29 pm -
1 stop4h 38m
Deal found 8/7![Delta logo]()
$275
This United Airlines deal was found by Cheapflights users on 8/11. 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.
Sat 10/175:59 pm -
1 stop5h 59m
Fri 10/236:15 am -
1 stop7h 08m
Deal found 8/11![United Airlines logo]()
$306
This American Airlines deal was found by Cheapflights users on 8/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/67:59 pm -
1 stop5h 00m
Sun 11/85:38 pm -
1 stop5h 21m
Deal found 8/9![American Airlines logo]()
$319
This JetBlue deal was found by Cheapflights users on 8/9. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1012:25 pm -
1 stop7h 36m
Thu 9/179:38 am -
1 stop6h 41m
Deal found 8/9![JetBlue logo]()
$295
This Southwest deal was found by Cheapflights users on 8/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/312:15 pm -
1 stop4h 15m
Sat 9/56:00 am -
Nonstop1h 45m
Deal found 8/11![Southwest logo]()
$273
This Delta deal was found by Cheapflights users on 8/7. 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 9/286:00 am -
1 stop4h 49m
Wed 9/301:19 pm -
1 stop4h 18m
Deal found 8/7![Delta logo]()
$275
Last-minute flights from Reagan-National to IllinoisDiscover last-minute flight deals from Reagan-National to Illinois. Data last updated August 11, 2026 and is based on user searches.
Discover last-minute flight deals from Reagan-National to Illinois. Data last updated August 11, 2026 and is based on user searches.
This Trip.com deal was found by Cheapflights users on 8/6. 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.
Mon 8/317:00 am -
1 stop7h 36m
Tue 9/12:41 pm -
1 stop30h 18m
Deal found 8/6![Frontier logo]()
$188
This United Airlines deal was found by Cheapflights users on 8/10. 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.
Mon 8/319:30 am -
Nonstop2h 17m
Wed 9/27:00 am -
Nonstop1h 59m
Deal found 8/10![United Airlines logo]()
$193
This Southwest deal was found by Cheapflights users on 8/10. 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.
Mon 8/317:25 am -
Nonstop1h 55m
Wed 9/26:10 am -
Nonstop1h 45m
Deal found 8/10![Southwest logo]()
$193
This United Airlines deal was found by Cheapflights users on 8/11. 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.
Thu 9/38:30 am -
Nonstop2h 15m
Sun 9/67:00 am -
Nonstop1h 59m
Deal found 8/11![United Airlines logo]()
$186
This Southwest deal was found by Cheapflights users on 8/7. 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.
Sun 9/66:00 am -
Nonstop1h 55m
Sun 9/68:55 am -
1 stop6h 00m
Deal found 8/7![Southwest logo]()
$187
This American Airlines deal was found by Cheapflights users on 8/7. 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.
Sun 9/610:45 am -
1 stop4h 10m
Sun 9/65:55 pm -
Nonstop2h 04m
Deal found 8/7![American Airlines logo]()
$192
This American Airlines deal was found by Cheapflights users on 8/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/116:30 am -
Nonstop2h 28m
Mon 9/146:55 am -
Nonstop2h 04m
Deal found 8/10![American Airlines logo]()
$185
This Southwest deal was found by Cheapflights users on 8/10. 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 9/119:15 pm -
Nonstop2h 00m
Tue 9/158:40 am -
2 stops6h 10m
Deal found 8/10![Southwest logo]()
$185
This Southwest deal was found by Cheapflights users on 8/9. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/113:35 pm -
Nonstop2h 05m
Sat 9/1210:05 am -
2 stops9h 45m
Deal found 8/9![Southwest logo]()
$188
This Southwest deal was found by Cheapflights users on 8/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/113:15 pm -
1 stop4h 40m
Mon 9/148:15 am -
1 stop5h 40m
Deal found 8/11![Southwest logo]()
$189
This United Airlines deal was found by Cheapflights users on 8/10. 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.
Sat 9/127:46 am -
Nonstop2h 14m
Thu 9/1712:40 pm -
Nonstop2h 02m
Deal found 8/10![United Airlines logo]()
$191
This Southwest deal was found by Cheapflights users on 8/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/121:00 pm -
Nonstop1h 55m
Mon 9/149:00 pm -
Nonstop1h 55m
Deal found 8/11![Southwest logo]()
$191
One-way flights from Reagan-National to IllinoisSearch for one-way flight options from Reagan-National to Illinois. Find affordable one-way fares based on user searches. Data last updated August 11, 2026.
Search for one-way flight options from Reagan-National to Illinois. Find affordable one-way fares based on user searches. Data last updated August 11, 2026.
This American Airlines deal was found by Cheapflights users on 8/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/58:09 pm -
Nonstop2h 32m
Deal found 8/11![American Airlines logo]()
$89
This Trip.com deal was found by Cheapflights users on 8/6. 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.
Mon 8/317:00 am -
1 stop7h 36m
Deal found 8/6![Frontier logo]()
$92
This Super.com deal was found by Cheapflights users on 8/7. 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.
Mon 9/141:06 pm -
1 stop12h 17m
Deal found 8/7![Frontier logo]()
$93
This Booking.com deal was found by Cheapflights users on 8/7. 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 9/51:59 pm -
1 stop24h 37m
Deal found 8/7![Frontier logo]()
$94
This United Airlines deal was found by Cheapflights users on 8/11. 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.
Thu 9/109:30 am -
Nonstop2h 17m
Deal found 8/11![United Airlines logo]()
$96
This Southwest deal was found by Cheapflights users on 8/10. 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.
Tue 9/86:05 am -
Nonstop1h 55m
Deal found 8/10![Southwest logo]()
$96
This Trip.com deal was found by Cheapflights users on 8/7. 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 9/97:00 am -
1 stop18h 23m
Deal found 8/7![Frontier logo]()
$97
This United Airlines deal was found by Cheapflights users on 8/10. 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.
Mon 8/318:10 pm -
Nonstop2h 20m
Deal found 8/10![United Airlines logo]()
$98
This Southwest deal was found by Cheapflights users on 8/10. 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.
Mon 8/316:40 pm -
Nonstop1h 55m
Deal found 8/10![Southwest logo]()
$98
This Delta deal was found by Cheapflights users on 8/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/612:27 pm -
1 stop5h 24m
Deal found 8/11![Delta logo]()
$99
This Delta deal was found by Cheapflights users on 8/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/116:10 am -
1 stop3h 57m
Deal found 8/11![Delta logo]()
$99
This Southwest deal was found by Cheapflights users on 8/10. 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.
Tue 11/102:40 pm -
1 stop4h 05m
Deal found 8/10![Southwest logo]()
$101
Find flight deals from Reagan-National to Illinois
Keep the following information in mind while searching for Reagan-National to Illinois flight deals. Data was last updated August 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $184 (United Airlines) |
One-way from | $89 (American Airlines) |
Popular in | June |
Cheapest in | January |
Average price | $277 |
Good round-trip deal | $268 or less |
Good one-way deal | $185 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Reagan-National 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 August 11, 2026.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Illinois that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Washington, D.C.Chicago
DCA Washington, D.C. Reagan-National - MDW Chicago Midway
DCAMDW
Washington, D.C. Reagan-National
Tue 10/6
7:25 am-12:25 pm
1 stop6h 00m
Chicago Midway
Thu 10/8
6:00 am-8:50 am
Nonstop1h 50m
$201
Washington, D.C.Chicago
DCA Washington, D.C. Reagan-National - MDW Chicago Midway
DCAMDW
Washington, D.C. Reagan-National
Sat 9/26
1:20 pm-4:40 pm
1 stop4h 20m
Chicago Midway
Mon 9/28
5:45 am-8:30 am
Nonstop1h 45m
$207
Washington, D.C.Chicago
DCA Washington, D.C. Reagan-National - MDW Chicago Midway
DCAMDW
Washington, D.C. Reagan-National
Mon 8/31
1:00 pm-5:50 pm
2 stops5h 50m
Chicago Midway
Sat 9/5
7:45 am-3:15 pm
1 stop6h 30m
$219
Washington, D.C.Chicago
DCA Washington, D.C. Reagan-National - ORD Chicago O'Hare Intl
DCAORD
Washington, D.C. Reagan-National
Fri 10/16
7:40 pm-11:52 pm
1 stop5h 12m
Chicago O'Hare Intl
Mon 10/19
3:40 pm-9:49 pm
1 stop5h 09m
$238
Washington, D.C.Chicago
DCA Washington, D.C. Reagan-National - ORD Chicago O'Hare Intl
DCAORD
Washington, D.C. Reagan-National
Wed 10/7
5:35 pm-8:30 pm
1 stop3h 55m
Chicago O'Hare Intl
Fri 10/9
11:19 am-4:39 pm
1 stop4h 20m
$238
Washington, D.C.Chicago
DCA Washington, D.C. Reagan-National - MDW Chicago Midway
DCAMDW
Washington, D.C. Reagan-National
Fri 10/2
6:50 pm-11:05 pm
1 stop5h 15m
Chicago Midway
Thu 10/8
7:55 am-1:45 pm
1 stop4h 50m
$238
Washington, D.C.Chicago
DCA Washington, D.C. Reagan-National - ORD Chicago O'Hare Intl
DCAORD
Washington, D.C. Reagan-National
Tue 9/8
7:38 am-1:39 pm
1 stop7h 01m
Chicago O'Hare Intl
Thu 9/10
6:00 am-2:58 pm
1 stop7h 58m
$253
Washington, D.C.Chicago
DCA Washington, D.C. Reagan-National - ORD Chicago O'Hare Intl
DCAORD
Washington, D.C. Reagan-National
Tue 9/1
6:00 am-1:39 pm
1 stop8h 39m
Chicago O'Hare Intl
Sat 9/5
3:20 pm-11:33 pm
1 stop7h 13m
$253
Washington, D.C.Chicago
DCA Washington, D.C. Reagan-National - ORD Chicago O'Hare Intl
DCAORD
Washington, D.C. Reagan-National
Mon 9/14
9:30 am-10:47 am
Nonstop2h 17m
Chicago O'Hare Intl
Tue 9/15
7:59 am-11:00 am
Nonstop2h 01m
$255
Quickest round-trip
Washington, D.C.Chicago
DCA Washington, D.C. Reagan-National - ORD Chicago O'Hare Intl
DCAORD
Washington, D.C. Reagan-National
Tue 9/1
11:57 am-1:13 pm
Nonstop2h 16m
Chicago O'Hare Intl
Thu 9/3
7:00 am-9:59 am
Nonstop1h 59m
$255
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Reagan-National to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Reagan-National with our price prediction graph.
DCA-ORD
DCA-MDW
DCA-CMI
DCA-STL
DCA-PIA
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 Washington, D.C. Reagan-National Airport to Illinois
DCA-USIL
DCA-ORD
DCA-MDW
DCA-CMI
DCA-STL
What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to Illinois?
Currently, September is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Illinois (average of $309). Flying from Washington, D.C. Reagan-National Airport to Illinois in March is currently the most expensive (average of $402). 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 DCA to IL?
Find hourly flight availability from Reagan-National 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 August 11, 2026.
It’s typically best to fly out from Washington, D.C. Reagan-National Airport to Illinois at noon. Doing so could potentially save you 9% on the flight price compared to flying in the afternoon, which is usually more expensive.
Weekly flight availability from Washington, D.C. Reagan-National Airport to Illinois
Explore weekly flight availability from Reagan-National 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 August 11, 2026.
The most flights from DCA to USIL are scheduled on a Sunday (60 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (30 on average).
How much does it cost to fly round-trip from Washington, D.C. Reagan-National Airport to Illinois?
Airfare is below average for this route at the moment.
Washington, D.C. Reagan-National Airport to Illinois flights typically cost between $245 and $445 in October.The cheapest round-trip price found within the last 5 days was $184 on United Airlines (Oct 30-Nov 2).
How far ahead should I book a flight from Washington, D.C. Reagan-National Airport to Illinois?
The price you pay for your flight from Washington, D.C. Reagan-National Airport to Illinois may vary depending on when you book. For the best chance of a lower fare, look to book 67 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest day to fly from Washington, D.C. Reagan-National Airport to Illinois?
Use this chart to determine the cheapest time to fly round-trip from Reagan-National to Illinois. Price data was last updated on August 8, 2026.
Travelers seeking maximum savings on their Washington, D.C. Reagan-National Airport to Illinois flight should consider departing on Tuesday 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.
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 August 11, 2026.
Get a feel of what it's like to fly with Southwest,United Airlines, andAmerican Airlines from Washington, D.C. Reagan-National Airport to Illinois by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
8.0
Food
7.0
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Overall
8.0
Food
7.0
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Overall
8.0
Food
7.0
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Overall
8.0
Food
7.0
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Overall
8.0
Food
7.0
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Related info for your journey
Find useful and relevant information for your journey from Reagan-National 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 Reagan-National to Illinois
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Complete your trip
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Reagan-National and Illinois flights
Browse other Reagan-National and Illinois flight options. Last updated on August 11, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Reagan-National to Illinois flights
Consider these flights traveling from Reagan-National to Illinois.
Top 4 airlines flying from Reagan-National to Illinois
Discover the top 4 airlines that operate flights from Reagan-National 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 August 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$29 | Average$169 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$154 | Average$404 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$189 | Average$370 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$227 | Average$367 | FlexibilityNo cancel fee | On-time63% |