$127+ Cheap flights from Rapid City (RAP) 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 6/13. Fares are subject to change and may not be available on all flights or dates of travel.
RAP — ORD
May 17 — May 241
Round-trip
1 adult, Economy
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Find cheap flights from Rapid City to Illinois with Cheapflights
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Cheapest flights from Rapid City to IllinoisExplore the most affordable flight options available from Rapid City to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 17, 2026.
Explore the most affordable flight options available from Rapid City to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 17, 2026.
This United Airlines deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/16:00 am
RAP
- ORD
Nonstop2h 34m
United Airlines
Tue 8/48:45 am
ORD
- RAP
Nonstop2h 39m
United Airlines
Deal found 4/15![United Airlines logo]()
$191
This Delta deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/204:33 pm
RAP
- ORD
1 stop3h 47m
Delta
Sun 5/245:41 pm
ORD
- RAP
1 stop5h 43m
Delta
Deal found 4/16![Delta logo]()
$232
This United Airlines deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/211:35 pm
RAP
- ORD
Nonstop2h 24m
United Airlines
Sun 5/247:50 pm
ORD
- RAP
Nonstop2h 47m
United Airlines
Deal found 4/16![United Airlines logo]()
$233
This American Airlines deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/153:25 pm
RAP
- ORD
Nonstop2h 38m
American Airlines
Sat 7/253:52 pm
ORD
- RAP
1 stop6h 39m
American Airlines
Deal found 4/16![American Airlines logo]()
$262
This American Airlines deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/233:23 pm
RAP
- ORD
Nonstop2h 34m
American Airlines
Tue 5/269:45 am
ORD
- RAP
Nonstop2h 34m
American Airlines
Deal found 4/16![American Airlines logo]()
$263
This United Airlines deal was found by Cheapflights users on 4/13. 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 5/79:30 am
RAP
- ORD
Nonstop2h 26m
United Airlines
Sun 5/108:05 pm
ORD
- RAP
Nonstop2h 41m
United Airlines
Deal found 4/13![United Airlines logo]()
$269
This United Airlines deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/299:20 am
RAP
- ORD
Nonstop2h 25m
United Airlines
Sat 5/28:05 pm
ORD
- RAP
Nonstop2h 41m
United Airlines
Deal found 4/14![United Airlines logo]()
$271
This Delta deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/711:13 am
RAP
- MDW
1 stop5h 43m
Delta
Sat 5/97:13 pm
MDW
- RAP
1 stop4h 10m
Delta
Deal found 4/14![Delta logo]()
$289
This Delta deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1810:58 am
RAP
- MDW
1 stop6h 38m
Delta
Tue 4/219:29 am
MDW
- RAP
1 stop6h 46m
Delta
Deal found 4/16![Delta logo]()
$291
This Delta deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1810:58 am
RAP
- MDW
2 stops10h 30m
Delta
Wed 4/2210:41 am
MDW
- RAP
2 stops12h 39m
Delta
Deal found 4/16![Delta logo]()
$301
This Delta deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/2510:58 am
RAP
- MDW
1 stop6h 38m
Delta
Fri 5/17:16 pm
MDW
- RAP
1 stop4h 04m
Delta
Deal found 4/16![Delta logo]()
$310
This Delta deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1810:58 am
RAP
- MDW
1 stop6h 38m
Delta
Thu 4/239:29 am
MDW
- RAP
1 stop6h 46m
Delta
Deal found 4/16![Delta logo]()
$323
Best flights from Rapid City to IllinoisDiscover carefully curated flight deals from Rapid City to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 17, 2026.
Discover carefully curated flight deals from Rapid City to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 17, 2026.
This United Airlines deal was found by Cheapflights users on 4/13. 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 5/79:30 am
RAP
- ORD
Nonstop2h 26m
United Airlines
Sun 5/108:05 pm
ORD
- RAP
Nonstop2h 41m
United Airlines
Deal found 4/13![United Airlines logo]()
$269
This Delta deal was found by Cheapflights users on 4/12. 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 5/711:13 am
RAP
- ORD
1 stop4h 38m
Delta
Sun 5/106:24 am
ORD
- RAP
1 stop5h 08m
Delta
Deal found 4/12![Delta logo]()
$289
This American Airlines deal was found by Cheapflights users on 4/12. 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 7/33:25 pm
RAP
- ORD
Nonstop2h 38m
American Airlines
Wed 7/89:40 am
ORD
- RAP
Nonstop2h 34m
American Airlines
Deal found 4/12![American Airlines logo]()
$325
This United Airlines deal was found by Cheapflights users on 4/13. 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 5/221:35 pm
RAP
- ORD
Nonstop2h 24m
United Airlines
Mon 5/256:00 am
ORD
- RAP
1 stop7h 29m
United Airlines
Deal found 4/13![United Airlines logo]()
$279
This American Airlines deal was found by Cheapflights users on 4/13. 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 5/235:01 pm
RAP
- ORD
1 stop6h 41m
American Airlines
Tue 5/269:45 am
ORD
- RAP
Nonstop2h 34m
American Airlines
Deal found 4/13![American Airlines logo]()
$335
This Delta deal was found by Cheapflights users on 4/13. 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 4/2810:58 am
RAP
- STL
1 stop4h 52m
Delta
Sat 5/25:35 pm
STL
- RAP
1 stop5h 45m
Delta
Deal found 4/13![Delta logo]()
$339
This United Airlines deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/299:20 am
RAP
- ORD
Nonstop2h 25m
United Airlines
Sun 5/38:05 pm
ORD
- RAP
Nonstop2h 41m
United Airlines
Deal found 4/14![United Airlines logo]()
$309
This United Airlines deal was found by Cheapflights users on 4/12. 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 5/21:00 pm
RAP
- ORD
1 stop5h 04m
United Airlines
Mon 5/45:45 pm
ORD
- RAP
1 stop5h 10m
United Airlines
Deal found 4/12![United Airlines logo]()
$327
This Delta deal was found by Cheapflights users on 4/13. 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 5/711:13 am
RAP
- MDW
1 stop5h 43m
Delta
Sun 5/109:23 am
MDW
- RAP
1 stop5h 21m
Delta
Deal found 4/13![Delta logo]()
$404
This Delta deal was found by Cheapflights users on 4/17. 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 6/16:50 am
RAP
- MDW
1 stop5h 29m
Delta
Mon 6/87:16 pm
MDW
- RAP
1 stop4h 21m
Delta
Deal found 4/17![Delta logo]()
$439
This American Airlines deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/64:57 pm
RAP
- STL
1 stop5h 02m
American Airlines
Wed 5/208:03 pm
STL
- RAP
1 stop16h 16m
American Airlines
Deal found 4/15![American Airlines logo]()
$491
This United Airlines deal was found by Cheapflights users on 4/13. 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 4/281:00 pm
RAP
- STL
2 stops7h 13m
United Airlines
Sat 5/210:25 am
STL
- RAP
2 stops7h 35m
United Airlines
Deal found 4/13![United Airlines logo]()
$408
This United Airlines deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/231:35 pm
RAP
- STL
1 stop6h 43m
United Airlines
Wed 5/275:41 pm
STL
- RAP
1 stop4h 56m
United Airlines
Deal found 4/14![United Airlines logo]()
$409
This Delta deal was found by Cheapflights users on 4/12. 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 5/136:50 am
RAP
- ORD
2 stops10h 15m
Delta
Wed 5/202:00 pm
ORD
- RAP
2 stops9h 24m
Delta
Deal found 4/12![Delta logo]()
$454
This American Airlines deal was found by Cheapflights users on 4/12. 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 4/274:57 pm
RAP
- STL
1 stop5h 02m
American Airlines
Fri 5/15:20 am
STL
- RAP
1 stop8h 18m
American Airlines
Deal found 4/12![American Airlines logo]()
$521
This United Airlines deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/19:30 am
RAP
- ORD
Nonstop2h 26m
United Airlines
Tue 5/58:05 pm
ORD
- RAP
Nonstop2h 41m
United Airlines
Deal found 4/16![United Airlines logo]()
$415
This Delta deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/510:40 am
RAP
- MDW
1 stop6h 25m
Delta
Mon 9/79:20 am
MDW
- RAP
1 stop6h 50m
Delta
Deal found 4/14![Delta logo]()
$499
This United Airlines deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/296:00 am
RAP
- BMI
1 stop5h 50m
United Airlines
Tue 9/16:00 am
BMI
- RAP
1 stop5h 12m
United Airlines
Deal found 4/14![United Airlines logo]()
$435
This Delta deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/110:58 am
RAP
- MDW
1 stop6h 38m
Delta
Tue 5/59:27 am
MDW
- RAP
2 stops6h 48m
Delta
Deal found 4/16![Delta logo]()
$524
This United Airlines deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/55:53 pm
RAP
- ORD
1 stop5h 06m
United Airlines
Mon 9/72:33 pm
ORD
- RAP
1 stop6h 59m
United Airlines
Deal found 4/14![United Airlines logo]()
$461
This Delta deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/1511:13 am
RAP
- MDW
1 stop5h 43m
Delta
Sun 5/177:13 pm
MDW
- RAP
1 stop4h 10m
Delta
Deal found 4/14![Delta logo]()
$529
This United Airlines deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/1412:05 pm
RAP
- ORD
Nonstop2h 26m
United Airlines
Thu 5/2112:05 pm
ORD
- RAP
2 stops11h 20m
United Airlines
Deal found 4/15![United Airlines logo]()
$467
This Delta deal was found by Cheapflights users on 4/12. 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 5/136:50 am
RAP
- MDW
2 stops10h 43m
Delta
Wed 5/207:13 pm
MDW
- RAP
1 stop4h 11m
Delta
Deal found 4/12![Delta logo]()
$540
This Delta deal was found by Cheapflights users on 4/13. 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 5/126:50 am
RAP
- MDW
1 stop5h 29m
Delta
Tue 5/199:22 am
MDW
- RAP
2 stops7h 26m
Delta
Deal found 4/13![Delta logo]()
$540
This United Airlines deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/142:35 pm
RAP
- STL
1 stop5h 08m
United Airlines
Fri 5/152:35 pm
STL
- RAP
1 stop6h 53m
United Airlines
Deal found 4/16![United Airlines logo]()
$520
This Delta deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/136:50 am
RAP
- MDW
2 stops10h 43m
Delta
Fri 5/157:13 pm
MDW
- RAP
1 stop4h 10m
Delta
Deal found 4/16![Delta logo]()
$584
Last-minute flights from Rapid City to IllinoisDiscover last-minute flight deals from Rapid City to Illinois. Data last updated April 17, 2026 and is based on user searches.
Discover last-minute flight deals from Rapid City to Illinois. Data last updated April 17, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1810:58 am
RAP
- MDW
1 stop6h 38m
Delta
Tue 4/219:29 am
MDW
- RAP
1 stop6h 46m
Delta
Deal found 4/16![Delta logo]()
$291
This Delta deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1810:58 am
RAP
- MDW
1 stop6h 38m
Delta
Wed 4/2210:41 am
MDW
- RAP
2 stops12h 39m
Delta
Deal found 4/16![Delta logo]()
$296
This Delta deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1810:58 am
RAP
- MDW
1 stop6h 38m
Delta
Thu 4/239:29 am
MDW
- RAP
1 stop6h 46m
Delta
Deal found 4/16![Delta logo]()
$323
This Delta deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1810:58 am
RAP
- MDW
2 stops10h 30m
Delta
Mon 4/2010:41 am
MDW
- RAP
2 stops12h 39m
Delta
Deal found 4/16![Delta logo]()
$333
This Delta deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/2510:58 am
RAP
- MDW
1 stop6h 38m
Delta
Fri 5/17:16 pm
MDW
- RAP
1 stop4h 04m
Delta
Deal found 4/16![Delta logo]()
$310
This United Airlines deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/299:20 am
RAP
- ORD
Nonstop2h 25m
United Airlines
Sat 5/28:05 pm
ORD
- RAP
Nonstop2h 41m
United Airlines
Deal found 4/14![United Airlines logo]()
$271
This United Airlines deal was found by Cheapflights users on 4/13. 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 5/79:30 am
RAP
- ORD
Nonstop2h 26m
United Airlines
Sun 5/108:05 pm
ORD
- RAP
Nonstop2h 41m
United Airlines
Deal found 4/13![United Airlines logo]()
$269
This Delta deal was found by Cheapflights users on 4/13. 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 5/711:13 am
RAP
- ORD
1 stop4h 38m
Delta
Sun 5/106:24 am
ORD
- RAP
1 stop5h 08m
Delta
Deal found 4/13![Delta logo]()
$289
This Delta deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/711:13 am
RAP
- MDW
1 stop5h 43m
Delta
Sat 5/97:13 pm
MDW
- RAP
1 stop4h 10m
Delta
Deal found 4/14![Delta logo]()
$289
This Delta deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/204:33 pm
RAP
- ORD
1 stop3h 47m
Delta
Sun 5/245:41 pm
ORD
- RAP
1 stop5h 43m
Delta
Deal found 4/16![Delta logo]()
$232
This United Airlines deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/211:35 pm
RAP
- ORD
Nonstop2h 24m
United Airlines
Sun 5/247:50 pm
ORD
- RAP
Nonstop2h 47m
United Airlines
Deal found 4/16![United Airlines logo]()
$233
This American Airlines deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/233:23 pm
RAP
- ORD
Nonstop2h 34m
American Airlines
Tue 5/269:45 am
ORD
- RAP
Nonstop2h 34m
American Airlines
Deal found 4/16![American Airlines logo]()
$263
One-way flights from Rapid City to IllinoisSearch for one-way flight options from Rapid City to Illinois. Find affordable one-way fares based on user searches. Data last updated April 17, 2026.
Search for one-way flight options from Rapid City to Illinois. Find affordable one-way fares based on user searches. Data last updated April 17, 2026.
This American Airlines deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/135:00 pm
RAP
- ORD
1 stop6h 35m
American Airlines
Deal found 4/15![American Airlines logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 4/12. 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 5/145:57 pm
RAP
- ORD
2 stops49h 35m
Multiple Airlines
Deal found 4/12![Multiple Airlines logo]()
$144
This American Airlines deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/296:11 pm
RAP
- ORD
Nonstop2h 19m
American Airlines
Deal found 4/15![American Airlines logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 4/12. 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 5/105:57 pm
RAP
- ORD
2 stops35h 42m
Multiple Airlines
Deal found 4/12![Multiple Airlines logo]()
$163
This Kiwi.com deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/119:54 pm
RAP
- ORD
1 stop30h 38m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$164
This Kiwi.com deal was found by Cheapflights users on 4/13. 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 6/149:54 pm
RAP
- ORD
1 stop30h 38m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$169
This Delta deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/166:48 am
RAP
- ORD
1 stop3h 43m
Delta
Deal found 4/16![Delta logo]()
$170
This United Airlines deal was found by Cheapflights users on 4/12. 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 6/106:00 am
RAP
- ORD
Nonstop2h 34m
United Airlines
Deal found 4/12![United Airlines logo]()
$174
This Kiwi.com deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/35:57 pm
RAP
- STL
2 stops19h 39m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$239
This Kiwi.com deal was found by Cheapflights users on 4/12. 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 6/1011:56 am
RAP
- MDW
3 stops33h 15m
Multiple Airlines
Deal found 4/12![Multiple Airlines logo]()
$265
This Delta deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/36:00 am
RAP
- STL
1 stop4h 32m
Delta
Deal found 4/15![Delta logo]()
$265
This Delta deal was found by Cheapflights users on 4/12. 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 6/106:48 am
RAP
- MDW
1 stop5h 21m
Delta
Deal found 4/12![Delta logo]()
$266
Find flight deals from Rapid City to Illinois
Keep the following information in mind while searching for Rapid City to Illinois flight deals. Data was last updated April 17, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $191 (United Airlines) |
One-way from | $127 (American Airlines) |
Popular in | January |
Cheapest in | June |
Average price | $510 |
Good round-trip deal | $348 or less |
Good one-way deal | $228 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Rapid City 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 April 17, 2026.
Use the filters below to find and compare flights from Rapid City to Illinois that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Rapid CityChicago
RAP - ORD
RAPORD
Rapid City
Thu 5/7
9:30 am-12:56 pm
Nonstop2h 26m
Chicago O'Hare Intl
Sun 5/10
8:05 pm-9:46 pm
Nonstop2h 41m
$269
Rapid CityChicago
RAP - ORD
RAPORD
Rapid City
Fri 5/22
1:35 pm-4:59 pm
Nonstop2h 24m
Chicago O'Hare Intl
Mon 5/25
6:00 am-12:29 pm
1 stop7h 29m
$279
Rapid CityChicago
RAP - ORD
RAPORD
Rapid City
Thu 5/7
11:13 am-4:51 pm
1 stop4h 38m
Chicago O'Hare Intl
Sun 5/10
6:24 am-10:32 am
1 stop5h 08m
$289
Quickest round-trip
Rapid CityChicago
RAP - ORD
RAPORD
Rapid City
Wed 4/29
9:20 am-12:45 pm
Nonstop2h 25m
Chicago O'Hare Intl
Sun 5/3
8:05 pm-9:46 pm
Nonstop2h 41m
$309
Rapid CityChicago
RAP - ORD
RAPORD
Rapid City
Fri 7/3
3:25 pm-7:03 pm
Nonstop2h 38m
Chicago O'Hare Intl
Wed 7/8
9:40 am-11:14 am
Nonstop2h 34m
$325
Rapid CityChicago
RAP - ORD
RAPORD
Rapid City
Sat 5/2
1:00 pm-7:04 pm
1 stop5h 04m
Chicago O'Hare Intl
Mon 5/4
5:45 pm-9:55 pm
1 stop5h 10m
$327
Rapid CityChicago
RAP - ORD
RAPORD
Rapid City
Sat 5/23
5:01 pm-12:42 am
1 stop6h 41m
Chicago O'Hare Intl
Tue 5/26
9:45 am-11:19 am
Nonstop2h 34m
$335
Rapid CitySt. Louis
RAP - STL
RAPSTL
Rapid City
Tue 4/28
10:58 am-4:50 pm
1 stop4h 52m
Lambert-St Louis
Sat 5/2
5:35 pm-10:20 pm
1 stop5h 45m
$339
Rapid CityChicago
RAP - MDW
RAPMDW
Rapid City
Thu 5/7
11:13 am-5:56 pm
1 stop5h 43m
Chicago Midway
Sun 5/10
9:23 am-1:44 pm
1 stop5h 21m
$404
Rapid CitySt. Louis
RAP - STL
RAPSTL
Rapid City
Tue 4/28
1:00 pm-9:13 pm
2 stops7h 13m
Lambert-St Louis
Sat 5/2
10:25 am-5:00 pm
2 stops7h 35m
$408
Showing 1-10 of 46 resultsSorted by cheapest first
Best time to book a flight from Rapid City to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Rapid City with our price prediction graph.
RAP-ORD
RAP-STL
RAP-MDW
RAP-BMI
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 Rapid City to Illinois
RAP-USIL
RAP-ORD
RAP-STL
RAP-MDW
RAP-BMI
What is the cheapest month to book a flight from Rapid City to Illinois?
Currently, July is the cheapest month in which you can book a flight from Rapid City to Illinois (average of $190). Flying from Rapid City to Illinois in January is currently the most expensive (average of $248). 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 RAP to IL?
Find hourly flight availability from Rapid City 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 April 17, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Rapid City to Illinois as you normally would.
Weekly flight availability from Rapid City to Illinois
Explore weekly flight availability from Rapid City 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 April 17, 2026.
The most flights from RAP to USIL are scheduled on a Thursday (8 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (3 on average).
How much does it cost to fly round-trip from Rapid City to Illinois?
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 April 17, 2026.
Peruse reviews from past customers who have flown with Delta,United Airlines, andAmerican Airlines from Rapid City to Illinois to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.5
Comfort
7.9
Boarding
8.1
Food
7.2
Overall
7.9
Entertainment
7.8
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Crew
8.5
Comfort
7.9
Boarding
8.1
Food
7.2
Overall
7.9
Entertainment
7.8
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Crew
8.5
Comfort
7.9
Boarding
8.1
Food
7.2
Overall
7.9
Entertainment
7.8
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Crew
8.5
Comfort
7.9
Boarding
8.1
Food
7.2
Overall
7.9
Entertainment
7.8
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Related info for your journey
Find useful and relevant information for your journey from Rapid City 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 Rapid City to Illinois
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Complete your trip
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Rapid City and Illinois flights
Browse other Rapid City and Illinois flight options. Last updated on April 17, 2026.
Popular flight searches
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Rapid City to Illinois flights
Consider these flights traveling from Rapid City to Illinois.
Top 2 airlines flying from Rapid City to Illinois
Discover the top 2 airlines that operate flights from Rapid City 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 April 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$200 | Average$342 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$230 | Average$351 | FlexibilityNo cancel fee | On-time69% |