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Cheap flights from Rapid City to Illinois from $94

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Rapid City to Illinois departing on 12/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
2:08 pm - 10:09 pmRAP-ORD
7h 01m1 stop
American Airlines Logo
6:54 am - 1:34 pmORD-RAP
7h 40m1 stop
$169American Airlines
Find Deal
Tue, Jan 20 - Tue, Jan 27
American Airlines Logo
2:08 pm - 10:09 pmRAP-ORD
7h 01m1 stop
American Airlines Logo
3:23 pm - 9:15 pmORD-RAP
6h 52m1 stop
$179American Airlines
Find Deal
Tue, Jan 20 - Tue, Jan 27
Delta Logo
6:00 am - 1:09 pmRAP-MDW
6h 09m1 stop
Delta Logo
9:50 am - 3:25 pmMDW-RAP
6h 35m1 stop
$229Delta
Find Deal
Tue, Jan 20 - Tue, Jan 27
Delta Logo
6:00 am - 1:09 pmRAP-MDW
6h 09m1 stop
Delta Logo
9:34 am - 3:25 pmMDW-RAP
6h 51m2 stops
$234Delta
Find Deal
Tue, Jan 20 - Tue, Jan 27
Multiple Airlines Logo
10:33 am - 9:09 pmRAP-STL
9h 36m1 stop
Multiple Airlines Logo
9:54 pm - 1:13 pmSTL-RAP
16h 19m1 stop
$239Multiple Airlines
Find Deal
Tue, Nov 25 - Sun, Nov 30
Delta Logo
6:00 am - 5:55 pmRAP-MDW
10h 55m2 stops
Delta Logo
9:34 am - 3:25 pmMDW-RAP
6h 51m2 stops
$239Delta
Find Deal
Tue, Jan 20 - Tue, Jan 27
Delta Logo
10:54 am - 6:01 pmRAP-ORD
6h 07m1 stop
Delta Logo
6:51 pm - 10:28 pmORD-RAP
4h 37m1 stop
$249Delta
Find Deal
Sat, Feb 28 - Mon, Mar 2
Multiple Airlines Logo
10:33 am - 9:29 amRAP-STL
21h 56m2 stops
Multiple Airlines Logo
9:54 pm - 1:13 pmSTL-RAP
16h 19m1 stop
$260Multiple Airlines
Find Deal
Tue, Nov 25 - Sun, Nov 30
United Airlines Logo
3:18 pm - 9:54 pmRAP-STL
5h 36m1 stop
United Airlines Logo
9:30 pm - 1:25 amSTL-RAP
4h 55m1 stop
$344United Airlines
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Mon, Nov 17 - Sun, Nov 30
United Airlines Logo
1:30 pm - 4:57 pmRAP-ORD
2h 27mnonstop
United Airlines Logo
8:45 am - 10:34 amORD-RAP
2h 49mnonstop
$354United Airlines
Find Deal
Thu, Nov 20 - Mon, Nov 24

American Airlines flights from Rapid City to Illinois

Our best American Airlines deals on Rapid City to Illinois flight tickets
American Airlines
Jan 20
RAP2:08 pmRapid City
7h 01m
1 stop
ORD10:09 pmChicago O'Hare Intl
Jan 27
ORD6:54 amChicago O'Hare Intl
7h 40m
1 stop
RAP1:34 pmRapid City
$169
Find similar
American Airlines
Jan 20
RAP2:08 pmRapid City
7h 01m
1 stop
ORD10:09 pmChicago O'Hare Intl
Jan 27
ORD3:23 pmChicago O'Hare Intl
6h 52m
1 stop
RAP9:15 pmRapid City
$179
Find similar
American Airlines
Jan 16
RAP2:08 pmRapid City
7h 10m
1 stop
ORD10:18 pmChicago O'Hare Intl
Jan 24
ORD1:15 pmChicago O'Hare Intl
9h 00m
1 stop
RAP9:15 pmRapid City
$348
Find similar

Delta flights from Rapid City to Illinois

Our best Delta deals on Rapid City to Illinois flight tickets
Delta
Jan 20
RAP6:00 amRapid City
6h 09m
1 stop
MDW1:09 pmChicago Midway
Jan 27
MDW9:50 amChicago Midway
6h 35m
1 stop
RAP3:25 pmRapid City
$229
Find similar
Delta
Jan 20
RAP6:00 amRapid City
6h 09m
1 stop
MDW1:09 pmChicago Midway
Jan 27
MDW9:34 amChicago Midway
6h 51m
2 stops
RAP3:25 pmRapid City
$234
Find similar
Delta
Jan 20
RAP6:00 amRapid City
10h 55m
2 stops
MDW5:55 pmChicago Midway
Jan 27
MDW9:34 amChicago Midway
6h 51m
2 stops
RAP3:25 pmRapid City
$239
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated November 4, 2025.
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

Price

Rapid CityChicago

RAP - ORD

RAPORD

Rapid City

Tue 1/20

2:08 pm-10:09 pm

1 stop7h 01m

Chicago O'Hare Intl

Tue 1/27

6:54 am-1:34 pm

1 stop7h 40m

$169

Rapid CityChicago

RAP - ORD

RAPORD

Rapid City

Tue 1/20

2:08 pm-10:09 pm

1 stop7h 01m

Chicago O'Hare Intl

Tue 1/27

3:23 pm-9:15 pm

1 stop6h 52m

$179

Rapid CityChicago

RAP - MDW

RAPMDW

Rapid City

Tue 1/20

6:00 am-1:09 pm

1 stop6h 09m

Chicago Midway

Tue 1/27

9:50 am-3:25 pm

1 stop6h 35m

$229

Rapid CityChicago

RAP - MDW

RAPMDW

Rapid City

Tue 1/20

6:00 am-1:09 pm

1 stop6h 09m

Chicago Midway

Tue 1/27

9:34 am-3:25 pm

2 stops6h 51m

$234

Rapid CitySt. Louis

RAP - STL

RAPSTL

Rapid City

Tue 11/25

10:33 am-9:09 pm

1 stop9h 36m

Lambert-St Louis

Sun 11/30

9:54 pm-1:13 pm

1 stop16h 19m

$239

Rapid CityChicago

RAP - MDW

RAPMDW

Rapid City

Tue 1/20

6:00 am-5:55 pm

2 stops10h 55m

Chicago Midway

Tue 1/27

9:34 am-3:25 pm

2 stops6h 51m

$239

Rapid CityChicago

RAP - ORD

RAPORD

Rapid City

Sat 2/28

10:54 am-6:01 pm

1 stop6h 07m

Chicago O'Hare Intl

Mon 3/2

6:51 pm-10:28 pm

1 stop4h 37m

$249

Rapid CitySt. Louis

RAP - STL

RAPSTL

Rapid City

Tue 11/25

10:33 am-9:29 am

2 stops21h 56m

Lambert-St Louis

Sun 11/30

9:54 pm-1:13 pm

1 stop16h 19m

$260

Rapid CitySt. Louis

RAP - STL

RAPSTL

Rapid City

Mon 11/17

3:18 pm-9:54 pm

1 stop5h 36m

Lambert-St Louis

Sun 11/30

9:30 pm-1:25 am

1 stop4h 55m

$344

Rapid CityChicago

RAP - ORD

RAPORD

Rapid City

Thu 11/20

1:30 pm-4:57 pm

Nonstop2h 27m

Chicago O'Hare Intl

Mon 11/24

8:45 am-10:34 am

Nonstop2h 49m

$354

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Illinois from

How to get the cheapest flight ticket from Rapid City to Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from Rapid City is in September. Flight prices, which tend to average around $289, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of September, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $309.

What is the cheapest day to depart on your flight to Illinois?

The cheapest day to depart from Rapid City to Illinois is on a Tuesday when prices can be found for as low as $446. Flights from Rapid City to Illinois on a Monday will generally be more expensive and average around $645. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Illinois?

Our most recent data shows that the best time of day to fly to Illinois is in the afternoon. Flights from Rapid City to Illinois during this time can be as low as $407. Flights at noon are often more expensive with an average ticket price of $499.

What is the cheapest Rapid City to Illinois flight route?

Fly from Rapid City to Chicago O'Hare Intl for the best Rapid City - Illinois flight prices

What cabin class options are available on Rapid City to Illinois flights?

There are 4 cabin classes available to choose from on Rapid City to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Rapid City to Illinois flights?

You could potentially save up to 11% on your flight if you consider stops on a Rapid City to Illinois flight.

Cheap Rapid City to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Rapid City to Illinois

Best Price Found

$245

Fastest flight time

2h 27m

Direct flights

Every day

Airports in Illinois

1 airport
The best one-way flight to Illinois from Rapid City in the past 72 hours is $245. The best round-trip flight deal from Rapid City to Illinois found on momondo in the last 72 hours is $373.
The fastest flight from Rapid City to Illinois takes 2h 27m
Direct flights go from Rapid City to Illinois every day.
There is 1 airport near Illinois: Chicago O'Hare Intl (ORD)
Search flight deals

  • When did momondo last update prices for flights from Rapid City Airport to Illinois?

    Prices for flights from Rapid City Airport to Illinois are refreshed on a daily basis.

  • How many operators does momondo search for flights from Rapid City Airport to Illinois?

  • How old do you have to be to fly from Rapid City Airport to Illinois?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Rapid City Airport to Illinois.

  • What documentation or ID do you need to fly to Illinois?

    The travel and health documents required for your trip to Illinois can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Illinois. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Rapid City to Illinois?

Best airlines flying from Rapid City to Illinois

Compare and see reviews for airlines that fly from Rapid City to Illinois with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $189Free CancellationRating
7.2
11,040 reviews
Search American Airlines flights
United AirlinesPriceFrom $210Free CancellationRating
7.4
9,002 reviews
Search United Airlines flights
DeltaPriceFrom $228Free CancellationRating
7.9
8,003 reviews
Search Delta flights

Why use momondo?

Why should I use momondo to find a flight deal from Rapid City to Illinois?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Illinois from Rapid City.

Can I find flights from Rapid City to Illinois with flexible booking policies on momondo?

momondo does allow users to show only those flights to Illinois from Rapid City which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Rapid City to Illinois?

Once all potential Rapid City to Illinois flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Rapid City to Illinois right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Illinois from Rapid City. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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