$115+ Cheap flights from Reagan-National (DCA) to Illinois
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/17. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — ORD
Oct 25 — Nov 11
Round-trip
1 adult, Economy
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Find cheap flights from Reagan-National to Illinois with Cheapflights
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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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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 September 25, 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 September 25, 2026.
This American Airlines deal was found by Cheapflights users on 9/23. 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.
Mon 11/238:10 am -
1 stop5h 18m
Mon 11/232:52 pm -
Nonstop2h 12m
Deal found 9/23![American Airlines logo]()
$186
This American Airlines deal was found by Cheapflights users on 9/22. 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 12/2210:39 am -
Nonstop2h 21m
Tue 12/221:30 pm -
1 stop4h 28m
Deal found 9/22![American Airlines logo]()
$204
This Cheapflightsfares deal was found by Cheapflights users on 9/24. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/51:00 pm -
1 stop12h 21m
Mon 11/96:30 am -
1 stop14h 20m
Deal found 9/24![Frontier logo]()
$232
This deal was found by Cheapflights users on 9/23. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/36:20 pm -
1 stop6h 41m
Sun 11/86:00 pm -
Nonstop2h 11m
Deal found 9/23![United Airlines logo]()
$233
This Frontier deal was found by Cheapflights users on 9/25. 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.
Sat 10/171:00 pm -
1 stop12h 24m
Tue 10/206:30 am -
1 stop9h 26m
Deal found 9/25![Frontier logo]()
$234
This Frontier deal was found by Cheapflights users on 9/24. 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.
Wed 11/111:00 pm -
1 stop12h 21m
Fri 11/136:30 am -
1 stop9h 17m
Deal found 9/24![Frontier logo]()
$237
This Cheapflightsfares deal was found by Cheapflights users on 9/20. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:00 pm -
1 stop7h 24m
Mon 10/266:30 am -
1 stop14h 29m
Deal found 9/20![Frontier logo]()
$238
This Super.com deal was found by Cheapflights users on 9/20. 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.
Fri 11/136:00 pm -
1 stop7h 21m
Tue 11/176:30 am -
1 stop9h 17m
Deal found 9/20![Frontier logo]()
$240
This Frontier deal was found by Cheapflights users on 9/21. 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 11/51:00 pm -
1 stop12h 21m
Thu 11/126:30 am -
1 stop9h 17m
Deal found 9/21![Frontier logo]()
$241
This Cheapflightsfares deal was found by Cheapflights users on 9/25. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/296:00 pm -
1 stop7h 21m
Sat 10/316:30 am -
1 stop9h 17m
Deal found 9/25![Frontier logo]()
$244
This Super.com deal was found by Cheapflights users on 9/24. 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.
Tue 11/106:00 pm -
1 stop7h 21m
Wed 11/116:30 am -
1 stop14h 20m
Deal found 9/24![Frontier logo]()
$245
This American Airlines deal was found by Cheapflights users on 9/22. 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 10/316:33 pm -
1 stop6h 38m
Wed 11/46:00 am -
1 stop6h 59m
Deal found 9/22![American Airlines logo]()
$291
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 September 25, 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 September 25, 2026.
This American Airlines deal was found by Cheapflights users on 9/25. 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 10/316:33 pm -
1 stop6h 38m
Wed 11/46:00 am -
1 stop6h 59m
Deal found 9/25![American Airlines logo]()
$291
This United Airlines deal was found by Cheapflights users on 9/24. 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 10/2410:30 am -
Nonstop2h 16m
Sat 11/711:05 am -
Nonstop2h 07m
Deal found 9/24![United Airlines logo]()
$297
This Southwest deal was found by Cheapflights users on 9/22. 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 10/158:40 pm -
Nonstop2h 00m
Sat 10/1711:10 am -
Nonstop1h 50m
Deal found 9/22![Southwest logo]()
$297
This Delta deal was found by Cheapflights users on 9/20. 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 10/217:40 pm -
1 stop5h 17m
Tue 10/275:29 pm -
1 stop4h 38m
Deal found 9/20![Delta logo]()
$317
This United Airlines deal was found by Cheapflights users on 9/24. 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 10/2210:30 am -
Nonstop2h 16m
Sat 10/247:45 pm -
Nonstop2h 07m
Deal found 9/24![United Airlines logo]()
$297
This Southwest deal was found by Cheapflights users on 9/22. 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 10/176:55 am -
Nonstop2h 00m
Sat 10/173:45 pm -
Nonstop1h 50m
Deal found 9/22![Southwest logo]()
$297
This American Airlines deal was found by Cheapflights users on 9/21. 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 10/242:45 pm -
1 stop6h 40m
Sat 10/3112:38 pm -
1 stop4h 25m
Deal found 9/21![American Airlines logo]()
$300
This Delta deal was found by Cheapflights users on 9/22. 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 11/46:10 am -
1 stop5h 18m
Mon 11/98:45 am -
1 stop6h 12m
Deal found 9/22![Delta logo]()
$317
This Southwest deal was found by Cheapflights users on 9/24. 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 10/241:00 pm -
Nonstop2h 00m
Sat 10/318:25 am -
Nonstop1h 50m
Deal found 9/24![Southwest logo]()
$297
This United Airlines deal was found by Cheapflights users on 9/22. 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 10/236:12 pm -
Nonstop2h 23m
Mon 10/269:00 am -
Nonstop2h 05m
Deal found 9/22![United Airlines logo]()
$308
This Delta deal was found by Cheapflights users on 9/20. 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.
Thu 11/59:40 am -
1 stop4h 19m
Wed 11/117:00 am -
1 stop4h 40m
Deal found 9/20![Delta logo]()
$317
This American Airlines deal was found by Cheapflights users on 9/24. 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 10/238:35 pm -
1 stop4h 35m
Sat 10/315:05 am -
1 stop4h 50m
Deal found 9/24![American Airlines logo]()
$326
This Southwest deal was found by Cheapflights users on 9/24. 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 10/151:05 pm -
Nonstop2h 00m
Mon 10/1911:10 am -
Nonstop1h 50m
Deal found 9/24![Southwest logo]()
$297
This United Airlines deal was found by Cheapflights users on 9/22. 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 10/311:01 pm -
1 stop4h 46m
Sun 11/18:15 am -
1 stop4h 57m
Deal found 9/22![United Airlines logo]()
$326
This Southwest deal was found by Cheapflights users on 9/21. 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 12/229:00 pm -
Nonstop2h 05m
Wed 12/2310:40 am -
Nonstop1h 50m
Deal found 9/21![Southwest logo]()
$297
This Delta deal was found by Cheapflights users on 9/20. 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 10/265:05 pm -
1 stop5h 38m
Thu 10/296:00 am -
1 stop5h 39m
Deal found 9/20![Delta logo]()
$328
This American Airlines deal was found by Cheapflights users on 9/23. 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 11/57:58 pm -
1 stop5h 01m
Sun 11/85:00 am -
1 stop5h 49m
Deal found 9/23![American Airlines logo]()
$339
This Delta deal was found by Cheapflights users on 9/21. 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 11/1312:26 pm -
1 stop4h 52m
Mon 11/161:30 pm -
1 stop6h 11m
Deal found 9/21![Delta logo]()
$328
This United Airlines deal was found by Cheapflights users on 9/20. 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 10/151:15 pm -
1 stop5h 38m
Wed 10/219:12 am -
1 stop5h 30m
Deal found 9/20![United Airlines logo]()
$334
This Southwest deal was found by Cheapflights users on 9/22. 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 12/236:55 pm -
1 stop5h 40m
Thu 12/3112:05 pm -
Nonstop1h 50m
Deal found 9/22![Southwest logo]()
$307
This American Airlines deal was found by Cheapflights users on 9/23. 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 11/66:22 pm -
1 stop6h 37m
Sun 11/85:00 am -
1 stop5h 49m
Deal found 9/23![American Airlines logo]()
$339
This Southwest deal was found by Cheapflights users on 9/23. 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 11/148:25 am -
1 stop5h 30m
Mon 11/164:30 pm -
Nonstop1h 45m
Deal found 9/23![Southwest logo]()
$307
This Delta deal was found by Cheapflights users on 9/25. 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 11/136:59 am -
1 stop5h 27m
Tue 11/1712:06 pm -
1 stop7h 35m
Deal found 9/25![Delta logo]()
$339
This American Airlines deal was found by Cheapflights users on 9/25. 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 11/146:22 pm -
1 stop6h 37m
Tue 11/172:34 pm -
2 stops6h 26m
Deal found 9/25![American Airlines logo]()
$344
This United Airlines deal was found by Cheapflights users on 9/21. 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.
Sun 10/188:10 pm -
Nonstop2h 19m
Wed 10/216:05 pm -
Nonstop2h 09m
Deal found 9/21![United Airlines logo]()
$358
This Southwest deal was found by Cheapflights users on 9/22. 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 11/126:10 am -
1 stop6h 35m
Sat 11/141:05 pm -
Nonstop1h 50m
Deal found 9/22![Southwest logo]()
$307
This United Airlines deal was found by Cheapflights users on 9/22. 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 11/2010:22 am -
Nonstop2h 20m
Fri 11/207:45 pm -
Nonstop1h 58m
Deal found 9/22![United Airlines logo]()
$359
This Delta deal was found by Cheapflights users on 9/20. 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 10/246:05 am -
1 stop11h 36m
Sun 11/17:00 am -
1 stop3h 32m
Deal found 9/20![Delta logo]()
$365
This American Airlines deal was found by Cheapflights users on 9/21. 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 10/610:22 am -
1 stop4h 35m
Sat 10/105:00 am -
1 stop4h 59m
Deal found 9/21![American Airlines logo]()
$369
This Southwest deal was found by Cheapflights users on 9/24. 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 12/112:40 pm -
Nonstop2h 05m
Sat 12/1211:05 am -
Nonstop1h 50m
Deal found 9/24![Southwest logo]()
$308
Last-minute flights from Reagan-National to IllinoisDiscover last-minute flight deals from Reagan-National to Illinois. Data last updated September 25, 2026 and is based on user searches.
Discover last-minute flight deals from Reagan-National to Illinois. Data last updated September 25, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 9/22. 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 10/137:00 am -
1 stop18h 24m
Tue 10/206:30 am -
1 stop28h 34m
Deal found 9/22![Frontier logo]()
$253
This Cheapflightsfares deal was found by Cheapflights users on 9/25. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/161:00 pm -
1 stop12h 24m
Tue 10/206:30 am -
1 stop9h 26m
Deal found 9/25![Frontier logo]()
$248
This Frontier deal was found by Cheapflights users on 9/25. 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.
Sat 10/171:00 pm -
1 stop12h 24m
Tue 10/206:30 am -
1 stop9h 26m
Deal found 9/25![Frontier logo]()
$234
This Frontier deal was found by Cheapflights users on 9/23. 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 10/206:00 pm -
1 stop7h 24m
Sat 10/246:30 am -
1 stop9h 26m
Deal found 9/23![Frontier logo]()
$241
This Cheapflightsfares deal was found by Cheapflights users on 9/22. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/221:00 pm -
1 stop12h 24m
Sat 10/316:30 am -
1 stop9h 17m
Deal found 9/22![Frontier logo]()
$247
This Expedia deal was found by Cheapflights users on 9/22. 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 10/221:00 pm -
1 stop12h 24m
Mon 10/266:30 am -
1 stop14h 29m
Deal found 9/22![Frontier logo]()
$249
This Cheapflightsfares deal was found by Cheapflights users on 9/20. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:00 pm -
1 stop7h 24m
Mon 10/266:30 am -
1 stop14h 29m
Deal found 9/20![Frontier logo]()
$238
This Frontier deal was found by Cheapflights users on 9/25. 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 10/276:00 pm -
1 stop7h 21m
Fri 10/306:30 am -
1 stop9h 17m
Deal found 9/25![Frontier logo]()
$246
This CheapOair deal was found by Cheapflights users on 9/23. 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 10/277:00 am -
1 stop18h 21m
Thu 10/296:30 am -
1 stop9h 17m
Deal found 9/23![Frontier logo]()
$251
This Expedia deal was found by Cheapflights users on 9/20. 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 10/297:00 am -
1 stop18h 21m
Mon 11/26:30 am -
1 stop14h 20m
Deal found 9/20![Frontier logo]()
$240
This Cheapflightsfares deal was found by Cheapflights users on 9/25. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/296:00 pm -
1 stop7h 21m
Sat 10/316:30 am -
1 stop9h 17m
Deal found 9/25![Frontier logo]()
$244
This American Airlines deal was found by Cheapflights users on 9/22. 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 10/316:33 pm -
1 stop6h 38m
Wed 11/46:00 am -
1 stop6h 59m
Deal found 9/22![American Airlines logo]()
$291
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 September 25, 2026.
Search for one-way flight options from Reagan-National to Illinois. Find affordable one-way fares based on user searches. Data last updated September 25, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 9/25. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/176:00 pm -
1 stop7h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![Frontier logo]()
$115
This Priceline deal was found by Cheapflights users on 9/25. 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.
Sat 10/246:00 pm -
1 stop7h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![Frontier logo]()
$117
This Cheapflightsfares deal was found by Cheapflights users on 9/20. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/66:00 pm -
1 stop7h 21m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Frontier logo]()
$118
This CheapOair deal was found by Cheapflights users on 9/20. 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.
Fri 10/236:00 pm -
1 stop7h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Frontier logo]()
$122
This Super.com deal was found by Cheapflights users on 9/20. 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 10/217:00 am -
1 stop18h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Frontier logo]()
$123
This Super.com deal was found by Cheapflights users on 9/22. 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.
Tue 10/137:00 am -
1 stop18h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![Frontier logo]()
$124
This CheapOair deal was found by Cheapflights users on 9/22. 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.
Thu 11/51:00 pm -
1 stop12h 21m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![Frontier logo]()
$127
This Southwest deal was found by Cheapflights users on 9/23. 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 10/243:40 pm -
Nonstop2h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![Southwest logo]()
$149
This Southwest deal was found by Cheapflights users on 9/22. 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 11/58:25 am -
1 stop4h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![Southwest logo]()
$154
This Southwest deal was found by Cheapflights users on 9/23. 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 10/169:30 am -
Nonstop2h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![Southwest logo]()
$160
This Southwest deal was found by Cheapflights users on 9/20. 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 11/138:25 am -
1 stop4h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Southwest logo]()
$165
This Kiwi.com deal was found by Cheapflights users on 9/20. 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 11/181:00 pm -
2 stops29h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Frontier logo]()
$168
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 September 25, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $186 (American Airlines) |
One-way from | $115 (Cheapflightsfares) |
Popular in | June |
Cheapest in | January |
Average price | $294 |
Good round-trip deal | $322 or less |
Good one-way deal | $184 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 7,457,451 searches. Data last updated September 25, 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 - ORD Chicago O'Hare Intl
DCAORD
Washington, D.C. Reagan-National
Thu 10/22
10:30 am-11:46 am
Nonstop2h 16m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$149
Washington, D.C.Chicago
DCA Washington, D.C. Reagan-National - MDW Chicago Midway
DCAMDW
Washington, D.C. Reagan-National
Thu 11/5
9:15 pm-10:20 pm
Nonstop2h 05m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$149
Washington, D.C.Chicago
DCA Washington, D.C. Reagan-National - ORD Chicago O'Hare Intl
DCAORD
Washington, D.C. Reagan-National
Mon 11/23
8:10 pm-9:44 pm
Nonstop2h 34m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$149
Quickest round-trip
Washington, D.C.Chicago
DCA Washington, D.C. Reagan-National - MDW Chicago Midway
DCAMDW
Washington, D.C. Reagan-National
Tue 10/20
1:00 pm-2:00 pm
Nonstop2h 00m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$149
Washington, D.C.Chicago
DCA Washington, D.C. Reagan-National - ORD Chicago O'Hare Intl
DCAORD
Washington, D.C. Reagan-National
Mon 11/9
7:40 am-9:00 am
Nonstop2h 20m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$149
Washington, D.C.Chicago
DCA Washington, D.C. Reagan-National - MDW Chicago Midway
DCAMDW
Washington, D.C. Reagan-National
Thu 11/19
11:00 am-12:05 pm
Nonstop2h 05m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$149
Washington, D.C.Chicago
DCA Washington, D.C. Reagan-National - ORD Chicago O'Hare Intl
DCAORD
Washington, D.C. Reagan-National
Wed 11/18
7:40 am-9:00 am
Nonstop2h 20m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$149
Washington, D.C.Chicago
DCA Washington, D.C. Reagan-National - MDW Chicago Midway
DCAMDW
Washington, D.C. Reagan-National
Sat 10/24
3:40 pm-4:40 pm
Nonstop2h 00m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$149
Washington, D.C.Chicago
DCA Washington, D.C. Reagan-National - ORD Chicago O'Hare Intl
DCAORD
Washington, D.C. Reagan-National
Thu 10/15
8:10 pm-9:29 pm
Nonstop2h 19m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$149
Washington, D.C.Chicago
DCA Washington, D.C. Reagan-National - ORD Chicago O'Hare Intl
DCAORD
Washington, D.C. Reagan-National
Thu 10/15
6:10 am-10:28 am
1 stop5h 18m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$159
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-MLI
DCA-MDW
DCA-BMI
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-MLI
DCA-MDW
DCA-BMI
What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to Illinois?
Currently, February is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Illinois (average of $315). 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 September 25, 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 8% 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 September 25, 2026.
The most flights from DCA to USIL are scheduled on a Wednesday (60 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (31 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 $278 and $494 in November.The cheapest round-trip price found within the last 5 days was $186 on American Airlines (Nov 23-Nov 23).
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 September 19, 2026.
Travelers seeking maximum savings on their Washington, D.C. Reagan-National Airport to Illinois flight should consider departing on Wednesday 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 September 25, 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.
Entertainment
7.5
Boarding
8.1
Food
7.0
Comfort
8.0
Overall
8.0
Crew
8.6
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Entertainment
7.5
Boarding
8.1
Food
7.0
Comfort
8.0
Overall
8.0
Crew
8.6
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Entertainment
7.5
Boarding
8.1
Food
7.0
Comfort
8.0
Overall
8.0
Crew
8.6
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Entertainment
7.5
Boarding
8.1
Food
7.0
Comfort
8.0
Overall
8.0
Crew
8.6
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Entertainment
7.5
Boarding
8.1
Food
7.0
Comfort
8.0
Overall
8.0
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
Complete your trip to Illinois by adding a car rental and/or hotel reservation to your travel itinerary.
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Find flights from Reagan-National to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Reagan-National and Illinois flights
Browse other Reagan-National and Illinois flight options. Last updated on September 25, 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 7,457,451 searches. Data last updated September 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$29 | Average$169 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$204 | Average$420 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$229 | Average$391 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$233 | Average$378 | FlexibilityNo cancel fee | On-time63% |