$203+ Cheap flights from Rapid City (RAP) 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 11/24. Fares are subject to change and may not be available on all flights or dates of travel.
RAP — ORD
Nov 26 — Dec 31
Round-trip
1 adult, Economy
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Find cheap flights from Rapid City 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 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 October 27, 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 October 27, 2026.
This Delta deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” 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 12/1211:06 am -
1 stop4h 37m
Tue 12/156:20 am -
1 stop5h 18m
Deal found 10/27![Delta logo]()
$321
This Delta deal was found by Cheapflights users on 10/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/86:42 am -
1 stop4h 17m
Tue 12/155:30 pm -
1 stop6h 16m
Deal found 10/24![Delta logo]()
$321
This Delta deal was found by Cheapflights users on 10/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/86:42 am -
2 stops10h 44m
Tue 12/155:02 pm -
2 stops6h 44m
Deal found 10/24![Delta logo]()
$331
This United Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” 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 12/126:00 am -
Nonstop2h 34m
Tue 12/157:50 pm -
Nonstop2h 52m
Deal found 10/27![United Airlines logo]()
$339
This Delta deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” 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 11/2611:29 am -
1 stop7h 10m
Sat 11/289:59 am -
1 stop6h 55m
Deal found 10/27![Delta logo]()
$340
This Kiwi.com deal was found by Cheapflights users on 10/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/199:56 pm -
1 stop30h 14m
Mon 11/2312:05 pm -
2 stops22h 07m
Deal found 10/24![Multiple Airlines logo]()
$348
This Kiwi.com deal was found by Cheapflights users on 10/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2410:02 am -
1 stop18h 08m
Tue 12/16:21 am -
1 stop29h 56m
Deal found 10/24![Multiple Airlines logo]()
$358
This Delta deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” 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 11/194:36 pm -
1 stop3h 57m
Sun 11/226:23 am -
1 stop5h 00m
Deal found 10/26![Delta logo]()
$359
This Delta deal was found by Cheapflights users on 10/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2411:28 am -
1 stop4h 11m
Tue 12/15:30 pm -
1 stop6h 16m
Deal found 10/24![Delta logo]()
$390
This Delta deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” 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 11/911:28 am -
1 stop4h 11m
Sat 11/1410:34 am -
1 stop6h 20m
Deal found 10/26![Delta logo]()
$399
This Delta deal was found by Cheapflights users on 10/23. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/711:21 am -
1 stop4h 29m
Mon 12/1410:24 am -
1 stop6h 29m
Deal found 10/23![Delta logo]()
$429
This Delta deal was found by Cheapflights users on 10/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/211:29 am -
1 stop4h 18m
Fri 11/1312:30 pm -
1 stop4h 24m
Deal found 10/24![Delta logo]()
$434
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 October 27, 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 October 27, 2026.
This Delta deal was found by Cheapflights users on 10/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/86:42 am -
2 stops10h 44m
Tue 12/155:02 pm -
2 stops6h 44m
Deal found 10/24![Delta logo]()
$331
This United Airlines deal was found by Cheapflights users on 10/24. 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 11/191:30 pm -
Nonstop2h 33m
Mon 11/232:30 pm -
1 stop5h 49m
Deal found 10/24![United Airlines logo]()
$349
This Delta deal was found by Cheapflights users on 10/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/86:42 am -
2 stops10h 19m
Tue 12/159:37 am -
2 stops7h 16m
Deal found 10/24![Delta logo]()
$331
This United Airlines deal was found by Cheapflights users on 10/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/121:30 pm -
Nonstop2h 33m
Sun 11/158:40 am -
Nonstop2h 51m
Deal found 10/23![United Airlines logo]()
$359
This Delta deal was found by Cheapflights users on 10/25. 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.
Thu 11/266:50 am -
2 stops10h 24m
Sat 11/285:42 pm -
1 stop5h 59m
Deal found 10/25![Delta logo]()
$345
This Delta deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” 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 4/2311:30 am -
1 stop4h 20m
Mon 4/265:35 pm -
1 stop6h 04m
Deal found 10/27![Delta logo]()
$359
This Delta deal was found by Cheapflights users on 10/22. 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.
Thu 11/196:45 am -
1 stop4h 03m
Sun 11/226:23 am -
1 stop5h 00m
Deal found 10/22![Delta logo]()
$379
This United Airlines deal was found by Cheapflights users on 10/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/65:48 pm -
1 stop5h 09m
Sat 4/106:15 pm -
1 stop4h 53m
Deal found 10/23![United Airlines logo]()
$459
This United Airlines deal was found by Cheapflights users on 10/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/254:00 pm -
1 stop5h 46m
Sun 11/298:40 am -
Nonstop2h 51m
Deal found 10/25![United Airlines logo]()
$464
This Delta deal was found by Cheapflights users on 10/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2411:28 am -
1 stop4h 11m
Tue 12/15:30 pm -
1 stop6h 16m
Deal found 10/24![Delta logo]()
$390
This United Airlines deal was found by Cheapflights users on 10/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/265:00 am -
1 stop5h 19m
Sun 11/298:40 am -
Nonstop2h 51m
Deal found 10/23![United Airlines logo]()
$464
This Delta deal was found by Cheapflights users on 10/23. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/711:21 am -
1 stop4h 29m
Mon 12/1410:24 am -
1 stop6h 29m
Deal found 10/23![Delta logo]()
$429
This United Airlines deal was found by Cheapflights users on 10/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/255:50 pm -
1 stop5h 09m
Sat 11/288:40 am -
Nonstop2h 51m
Deal found 10/25![United Airlines logo]()
$477
This Delta deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” 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 12/196:35 am -
1 stop9h 49m
Mon 12/286:30 pm -
1 stop5h 22m
Deal found 10/27![Delta logo]()
$492
This Delta deal was found by Cheapflights users on 10/25. 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.
Wed 11/1111:28 am -
1 stop4h 11m
Fri 11/1312:30 pm -
1 stop4h 24m
Deal found 10/25![Delta logo]()
$494
This Delta deal was found by Cheapflights users on 10/23. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/2511:28 am -
1 stop4h 13m
Sat 11/286:20 am -
1 stop5h 03m
Deal found 10/23![Delta logo]()
$500
This Delta deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” 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 12/196:35 am -
1 stop9h 49m
Sat 12/2611:47 am -
1 stop5h 10m
Deal found 10/27![Delta logo]()
$602
This Delta deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” 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 11/1211:28 am -
1 stop4h 11m
Sun 11/155:29 pm -
1 stop6h 12m
Deal found 10/26![Delta logo]()
$609
Last-minute flights from Rapid City to IllinoisDiscover last-minute flight deals from Rapid City to Illinois. Data last updated October 27, 2026 and is based on user searches.
Discover last-minute flight deals from Rapid City to Illinois. Data last updated October 27, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 10/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/211:29 am -
1 stop4h 18m
Fri 11/1312:30 pm -
1 stop4h 24m
Deal found 10/24![Delta logo]()
$434
This Delta deal was found by Cheapflights users on 10/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/211:29 am -
1 stop4h 18m
Tue 11/35:31 pm -
1 stop5h 59m
Deal found 10/24![Delta logo]()
$494
This Delta deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” 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 11/911:28 am -
1 stop4h 11m
Sat 11/1410:34 am -
1 stop6h 20m
Deal found 10/26![Delta logo]()
$399
This Delta deal was found by Cheapflights users on 10/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/106:45 am -
2 stops10h 19m
Thu 11/1212:30 pm -
1 stop4h 24m
Deal found 10/24![Delta logo]()
$499
This United Airlines deal was found by Cheapflights users on 10/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/124:00 pm -
1 stop6h 59m
Sun 11/158:40 am -
Nonstop2h 51m
Deal found 10/23![United Airlines logo]()
$369
This United Airlines deal was found by Cheapflights users on 10/24. 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 11/191:30 pm -
Nonstop2h 33m
Mon 11/238:40 am -
Nonstop2h 51m
Deal found 10/24![United Airlines logo]()
$339
This Kiwi.com deal was found by Cheapflights users on 10/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/199:56 pm -
1 stop30h 14m
Mon 11/2312:05 pm -
2 stops22h 07m
Deal found 10/24![Multiple Airlines logo]()
$348
This Delta deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” 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 11/194:36 pm -
1 stop3h 57m
Sun 11/226:23 am -
1 stop5h 00m
Deal found 10/26![Delta logo]()
$359
This Kiwi.com deal was found by Cheapflights users on 10/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2410:02 am -
1 stop18h 08m
Tue 12/16:21 am -
1 stop29h 56m
Deal found 10/24![Multiple Airlines logo]()
$358
This Delta deal was found by Cheapflights users on 10/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2411:28 am -
1 stop4h 11m
Tue 12/15:30 pm -
1 stop6h 16m
Deal found 10/24![Delta logo]()
$390
This United Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” 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 11/254:00 pm -
1 stop6h 59m
Tue 12/17:50 pm -
Nonstop2h 52m
Deal found 10/27![United Airlines logo]()
$373
This Delta deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” 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 11/2611:29 am -
1 stop7h 10m
Sat 11/289:59 am -
1 stop6h 55m
Deal found 10/27![Delta logo]()
$340
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 October 27, 2026.
Search for one-way flight options from Rapid City to Illinois. Find affordable one-way fares based on user searches. Data last updated October 27, 2026.
This Trip.com deal was found by Cheapflights users on 10/24. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2410:02 am -
1 stop18h 08m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Multiple Airlines logo]()
$203
This Delta deal was found by Cheapflights users on 10/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/910:44 am -
1 stop4h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Delta logo]()
$230
This Delta deal was found by Cheapflights users on 10/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2411:28 am -
1 stop4h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Delta logo]()
$230
This Delta deal was found by Cheapflights users on 10/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/236:00 am -
2 stops11h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Delta logo]()
$235
This Delta deal was found by Cheapflights users on 10/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/910:44 am -
2 stops10h 33m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Delta logo]()
$235
This Kiwi.com deal was found by Cheapflights users on 10/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2410:02 am -
3 stops45h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Multiple Airlines logo]()
$262
This American Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” 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 1/16:00 am -
1 stop7h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![American Airlines logo]()
$265
This Delta deal was found by Cheapflights users on 10/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/1510:44 am -
1 stop5h 09m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Delta logo]()
$265
This Delta deal was found by Cheapflights users on 10/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/2210:44 am -
2 stops12h 13m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Delta logo]()
$270
This Delta deal was found by Cheapflights users on 10/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/2210:44 am -
2 stops12h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Delta logo]()
$270
This United Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” 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 1/11:32 pm -
Nonstop2h 21m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![United Airlines logo]()
$289
This Delta deal was found by Cheapflights users on 10/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/86:00 am -
1 stop25h 58m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Delta logo]()
$297
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 October 27, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $321 (Delta) |
One-way from | $203 (Trip.com) |
Popular in | January |
Cheapest in | June |
Average price | $448 |
Good round-trip deal | $449 or less |
Good one-way deal | $320 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 7,457,451 searches. Data last updated October 27, 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 Rapid City - ORD Chicago O'Hare Intl
RAPORD
Rapid City
Tue 11/24
10:02 am-5:10 am
1 stop18h 08m
Chicago O'Hare Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$203
Rapid CityChicago
RAP Rapid City - ORD Chicago O'Hare Intl
RAPORD
Rapid City
Sat 1/9
10:44 am-4:41 pm
1 stop4h 57m
Chicago O'Hare Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$230
Rapid CityChicago
RAP Rapid City - MDW Chicago Midway
RAPMDW
Rapid City
Sat 1/23
10:44 am-4:53 pm
1 stop5h 09m
Chicago Midway
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$230
Rapid CityChicago
RAP Rapid City - MDW Chicago Midway
RAPMDW
Rapid City
Sat 1/9
10:44 am-4:53 pm
1 stop5h 09m
Chicago Midway
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$230
Rapid CityChicago
RAP Rapid City - MDW Chicago Midway
RAPMDW
Rapid City
Tue 11/24
11:28 am-4:39 pm
1 stop4h 11m
Chicago Midway
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$230
Rapid CityChicago
RAP Rapid City - ORD Chicago O'Hare Intl
RAPORD
Rapid City
Sat 1/23
6:00 am-6:47 pm
2 stops11h 47m
Chicago O'Hare Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$235
Rapid CityChicago
RAP Rapid City - ORD Chicago O'Hare Intl
RAPORD
Rapid City
Sat 1/30
6:00 am-6:47 pm
2 stops11h 47m
Chicago O'Hare Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$235
Rapid CityChicago
RAP Rapid City - MDW Chicago Midway
RAPMDW
Rapid City
Tue 11/24
10:02 am-8:14 am
3 stops45h 12m
Chicago Midway
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$262
Rapid CityChicago
RAP Rapid City - ORD Chicago O'Hare Intl
RAPORD
Rapid City
Fri 1/1
6:00 am-2:12 pm
1 stop7h 12m
Chicago O'Hare Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$265
Rapid CityChicago
RAP Rapid City - MDW Chicago Midway
RAPMDW
Rapid City
Fri 1/29
6:00 am-12:04 pm
1 stop5h 04m
Chicago Midway
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$265
Showing 1-10 of 36 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-MDW
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-MDW
What is the cheapest month to book a flight from Rapid City to Illinois?
Currently, April is the cheapest month in which you can book a flight from Rapid City to Illinois (average of $209). Flying from Rapid City to Illinois in January is currently the most expensive (average of $536). 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 October 27, 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.
How much does it cost to fly round-trip from Rapid City to Illinois?
Airfare is below average for this route at the moment.
Rapid City to Illinois flights typically cost between $379 and $416 in December.The cheapest round-trip price found within the last 5 days was $321 on Delta (Dec 8-Dec 15).
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 October 27, 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.
Overall
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Entertainment
7.8
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Overall
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Entertainment
7.8
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Overall
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Entertainment
7.8
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Overall
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Entertainment
7.8
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - 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
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Illinois by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Rapid City to Illinois by cabin class
Find flights from Rapid City to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Rapid City and Illinois flights
Browse other Rapid City and Illinois flight options. Last updated on October 27, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 7,457,451 searches. Data last updated October 27, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$187 | Average$360 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$236 | Average$354 | FlexibilityNo cancel fee | On-time69% |