What is the cheapest airline that flies from Rapid City to Illinois?

United Airlines, Delta, and American Airlines are the most popular carriers operating from Rapid City to Illinois

How many flights depart from Rapid City to Illinois on average per day?

As of August 2026, there are 6 flights per day flying from Rapid City to Illinois. The most common time of day flights depart is 6:00AM, with 58% of flights taking off in the afternoon.

How many flights depart from Rapid City to Illinois on average per week?

48 flights are operational weekly from Rapid City to Illinois as of August 2026. The most popular departure day for this route is Wed, with 19% of flights per week taking off on this day.

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?

As of August 2026, there are 3 operators available to choose from 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.

$179 Cheap Flights from Rapid City to Illinois in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Rapid City to Illinois

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

1:37 pm - 5:01 pmRAP Rapid City-ORD Chicago O'Hare Intl

2h 24mnonstop

8:40 am - 10:31 amORD Chicago O'Hare Intl-RAP Rapid City

2h 51mnonstop

$261United Airlines

Wed, Oct 21 - Wed, Oct 28

6:07 pm - 9:45 pmRAP Rapid City-ORD Chicago O'Hare Intl

2h 38mnonstop

9:40 am - 11:15 amORD Chicago O'Hare Intl-RAP Rapid City

2h 35mnonstop

$270American Airlines

Sat, Sep 26 - Sun, Sep 27

1:31 pm - 4:55 pmRAP Rapid City-ORD Chicago O'Hare Intl

2h 24mnonstop

5:00 am - 9:27 amORD Chicago O'Hare Intl-RAP Rapid City

5h 27m1 stop Denver Intl

$271United Airlines

Wed, Sep 2 - Wed, Sep 9

1:37 pm - 5:01 pmRAP Rapid City-ORD Chicago O'Hare Intl

2h 24mnonstop

2:30 pm - 8:43 pmORD Chicago O'Hare Intl-RAP Rapid City

7h 13m1 stop Denver Intl

$271United Airlines

Wed, Oct 21 - Wed, Oct 28

1:31 pm - 4:55 pmRAP Rapid City-ORD Chicago O'Hare Intl

2h 24mnonstop

8:58 am - 10:26 amORD Chicago O'Hare Intl-RAP Rapid City

2h 28mnonstop

$279United Airlines

Fri, Sep 4 - Sun, Sep 6

6:07 pm - 9:45 pmRAP Rapid City-ORD Chicago O'Hare Intl

2h 38mnonstop

7:09 am - 12:17 pmORD Chicago O'Hare Intl-RAP Rapid City

6h 08m1 stop Dallas/Fort Worth

$280American Airlines

Sat, Sep 26 - Sun, Sep 27

6:07 pm - 9:45 pmRAP Rapid City-ORD Chicago O'Hare Intl

2h 38mnonstop

5:00 am - 9:47 amORD Chicago O'Hare Intl-RAP Rapid City

5h 47m1 stop Dallas/Fort Worth

$280American Airlines

Wed, Sep 9 - Mon, Sep 14

6:39 am - 11:47 amRAP Rapid City-MDW Chicago Midway

4h 08m1 stop Minneapolis St Paul

5:31 pm - 10:30 pmMDW Chicago Midway-RAP Rapid City

5h 59m1 stop Minneapolis St Paul

$281Delta

Wed, Oct 21 - Sat, Oct 24

10:46 am - 6:01 pmRAP Rapid City-MDW Chicago Midway

6h 15m1 stop Minneapolis St Paul

7:13 pm - 10:18 pmMDW Chicago Midway-RAP Rapid City

4h 05m1 stop Minneapolis St Paul

$281Delta

Wed, Sep 2 - Wed, Sep 9

6:39 am - 2:36 pmRAP Rapid City-ORD Chicago O'Hare Intl

6h 57m1 stop Minneapolis St Paul

6:20 am - 10:45 amORD Chicago O'Hare Intl-RAP Rapid City

5h 25m1 stop Minneapolis St Paul

$281Delta

Tue, Oct 13 - Sat, Oct 17

Cheap last minute flights

Enter your travel dates to find the best prices.

1:35 pm - 4:59 pmRAP Rapid City-ORD Chicago O'Hare Intl

2h 24mnonstop

8:58 am - 10:26 amORD Chicago O'Hare Intl-RAP Rapid City

2h 28mnonstop

$354United Airlines

Sun, Aug 9 - Sun, Aug 16

3:21 pm - 7:00 pmRAP Rapid City-ORD Chicago O'Hare Intl

2h 39mnonstop

5:00 am - 11:49 amORD Chicago O'Hare Intl-RAP Rapid City

7h 49m1 stop Dallas/Fort Worth

$364American Airlines

Sun, Aug 9 - Sun, Aug 16

5:00 am - 11:23 amRAP Rapid City-ORD Chicago O'Hare Intl

5h 23m1 stop Denver Intl

5:00 am - 9:28 amORD Chicago O'Hare Intl-RAP Rapid City

5h 28m1 stop Denver Intl

$374United Airlines

Sun, Aug 9 - Sun, Aug 16

2:32 pm - 9:47 pmRAP Rapid City-ORD Chicago O'Hare Intl

6h 15m1 stop Minneapolis St Paul

6:00 am - 10:02 amORD Chicago O'Hare Intl-RAP Rapid City

5h 02m1 stop Minneapolis St Paul

$393Delta

Fri, Aug 7 - Wed, Aug 12

3:21 pm - 7:00 pmRAP Rapid City-ORD Chicago O'Hare Intl

2h 39mnonstop

1:20 pm - 2:50 pmORD Chicago O'Hare Intl-RAP Rapid City

2h 30mnonstop

$402American Airlines

Fri, Aug 7 - Wed, Aug 12

3:21 pm - 7:00 pmRAP Rapid City-ORD Chicago O'Hare Intl

2h 39mnonstop

9:40 am - 4:34 pmORD Chicago O'Hare Intl-RAP Rapid City

7h 54m1 stop Dallas/Fort Worth

$412American Airlines

Fri, Aug 7 - Wed, Aug 12

1:35 pm - 4:59 pmRAP Rapid City-ORD Chicago O'Hare Intl

2h 24mnonstop

9:30 pm - 11:16 pmORD Chicago O'Hare Intl-RAP Rapid City

2h 46mnonstop

$417United Airlines

Fri, Aug 7 - Sun, Aug 9

1:35 pm - 4:59 pmRAP Rapid City-ORD Chicago O'Hare Intl

2h 24mnonstop

9:30 pm - 11:16 pmORD Chicago O'Hare Intl-RAP Rapid City

2h 46mnonstop

$417United Airlines

Thu, Aug 6 - Mon, Aug 10

2:32 pm - 9:47 pmRAP Rapid City-ORD Chicago O'Hare Intl

6h 15m1 stop Minneapolis St Paul

6:00 am - 10:02 amORD Chicago O'Hare Intl-RAP Rapid City

5h 02m1 stop Minneapolis St Paul

$421Delta

Fri, Aug 7 - Wed, Aug 12

10:55 am - 4:59 pmRAP Rapid City-ORD Chicago O'Hare Intl

5h 04m1 stop Minneapolis St Paul

6:00 am - 10:02 amORD Chicago O'Hare Intl-RAP Rapid City

5h 02m1 stop Minneapolis St Paul

$465Delta

Fri, Aug 7 - Sun, Aug 9

Cheap direct flights

Enter your travel dates to find the best prices.

1:37 pm - 5:01 pmRAP Rapid City-ORD Chicago O'Hare Intl

2h 24mnonstop

8:40 am - 10:31 amORD Chicago O'Hare Intl-RAP Rapid City

2h 51mnonstop

$261United Airlines

Wed, Oct 21 - Wed, Oct 28

6:07 pm - 9:45 pmRAP Rapid City-ORD Chicago O'Hare Intl

2h 38mnonstop

9:40 am - 11:15 amORD Chicago O'Hare Intl-RAP Rapid City

2h 35mnonstop

$270American Airlines

Sat, Sep 26 - Sun, Sep 27

1:31 pm - 4:55 pmRAP Rapid City-ORD Chicago O'Hare Intl

2h 24mnonstop

8:58 am - 10:26 amORD Chicago O'Hare Intl-RAP Rapid City

2h 28mnonstop

$279United Airlines

Fri, Sep 4 - Sun, Sep 6

1:36 pm - 5:00 pmRAP Rapid City-ORD Chicago O'Hare Intl

2h 24mnonstop

8:59 am - 10:25 amORD Chicago O'Hare Intl-RAP Rapid City

2h 26mnonstop

$307United Airlines

Wed, Sep 9 - Mon, Sep 14

1:36 pm - 5:00 pmRAP Rapid City-ORD Chicago O'Hare Intl

2h 24mnonstop

8:59 am - 10:25 amORD Chicago O'Hare Intl-RAP Rapid City

2h 26mnonstop

$340United Airlines

Thu, Sep 10 - Sun, Sep 13

1:37 pm - 5:01 pmRAP Rapid City-ORD Chicago O'Hare Intl

2h 24mnonstop

8:47 am - 10:15 amORD Chicago O'Hare Intl-RAP Rapid City

2h 28mnonstop

$341United Airlines

Tue, Oct 20 - Sat, Oct 24

1:37 pm - 5:01 pmRAP Rapid City-ORD Chicago O'Hare Intl

2h 24mnonstop

8:47 am - 10:15 amORD Chicago O'Hare Intl-RAP Rapid City

2h 28mnonstop

$341United Airlines

Wed, Oct 21 - Sat, Oct 24

1:37 pm - 5:01 pmRAP Rapid City-ORD Chicago O'Hare Intl

2h 24mnonstop

8:47 am - 10:15 amORD Chicago O'Hare Intl-RAP Rapid City

2h 28mnonstop

$350United Airlines

Thu, Oct 22 - Sat, Oct 24

1:37 pm - 5:01 pmRAP Rapid City-ORD Chicago O'Hare Intl

2h 24mnonstop

8:47 am - 10:15 amORD Chicago O'Hare Intl-RAP Rapid City

2h 28mnonstop

$350United Airlines

Mon, Oct 19 - Sat, Oct 24

6:07 pm - 9:45 pmRAP Rapid City-ORD Chicago O'Hare Intl

2h 38mnonstop

9:40 am - 11:15 amORD Chicago O'Hare Intl-RAP Rapid City

2h 35mnonstop

$362American Airlines

Fri, Sep 18 - Mon, Sep 21

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

American Airlines flights from Rapid City to Illinois

Our best American Airlines deals on Rapid City to Illinois flight tickets

American Airlines

Sep 26

RAP6:07 pmRapid City

2h 38m

ORD9:45 pmChicago O'Hare Intl

Sep 27

ORD9:40 amChicago O'Hare Intl

2h 35m

RAP11:15 amRapid City

$270

American Airlines

Sep 9

RAP6:07 pmRapid City

2h 38m

ORD9:45 pmChicago O'Hare Intl

Sep 14

ORD5:00 amChicago O'Hare Intl

5h 47m

1 stop

RAP9:47 amRapid City

$280

American Airlines

Sep 12

RAP4:56 pmRapid City

6h 18m

1 stop

ORD12:14 amChicago O'Hare Intl

Sep 13

ORD4:00 pmChicago O'Hare Intl

2h 37m

RAP5:37 pmRapid City

$300

United Airlines flights from Rapid City to Illinois

Our best United Airlines deals on Rapid City to Illinois flight tickets

United Airlines

Oct 21

RAP1:37 pmRapid City

2h 24m

ORD5:01 pmChicago O'Hare Intl

Oct 28

ORD8:40 amChicago O'Hare Intl

2h 51m

RAP10:31 amRapid City

$261

United Airlines

Sep 2

RAP1:31 pmRapid City

2h 24m

ORD4:55 pmChicago O'Hare Intl

Sep 9

ORD5:00 amChicago O'Hare Intl

5h 27m

1 stop

RAP9:27 amRapid City

$271

United Airlines

Sep 4

RAP1:31 pmRapid City

2h 24m

ORD4:55 pmChicago O'Hare Intl

Sep 6

ORD8:58 amChicago O'Hare Intl

2h 28m

RAP10:26 amRapid City

$279

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Rapid CityChicago

RAP Rapid City - ORD Chicago O'Hare Intl

RAPORD

Rapid City

Wed 10/21

1:37 pm-5:01 pm

Nonstop2h 24m

Chicago O'Hare Intl

Wed 10/28

8:40 am-10:31 am

Nonstop2h 51m

$261

Rapid CityChicago

RAP Rapid City - ORD Chicago O'Hare Intl

RAPORD

Rapid City

Sat 9/26

6:07 pm-9:45 pm

Nonstop2h 38m

Chicago O'Hare Intl

Sun 9/27

9:40 am-11:15 am

Nonstop2h 35m

$270

Rapid CityChicago

RAP Rapid City - ORD Chicago O'Hare Intl

RAPORD

Rapid City

Wed 9/2

1:31 pm-4:55 pm

Nonstop2h 24m

Chicago O'Hare Intl

Wed 9/9

5:00 am-9:27 am

1 stop5h 27m

$271

Rapid CityChicago

RAP Rapid City - ORD Chicago O'Hare Intl

RAPORD

Rapid City

Wed 10/21

1:37 pm-5:01 pm

Nonstop2h 24m

Chicago O'Hare Intl

Wed 10/28

2:30 pm-8:43 pm

1 stop7h 13m

$271

Quickest round-trip

Rapid CityChicago

RAP Rapid City - ORD Chicago O'Hare Intl

RAPORD

Rapid City

Fri 9/4

1:31 pm-4:55 pm

Nonstop2h 24m

Chicago O'Hare Intl

Sun 9/6

8:58 am-10:26 am

Nonstop2h 28m

$279

Rapid CityChicago

RAP Rapid City - ORD Chicago O'Hare Intl

RAPORD

Rapid City

Sat 9/26

6:07 pm-9:45 pm

Nonstop2h 38m

Chicago O'Hare Intl

Sun 9/27

7:09 am-12:17 pm

1 stop6h 08m

$280

Rapid CityChicago

RAP Rapid City - ORD Chicago O'Hare Intl

RAPORD

Rapid City

Wed 9/9

6:07 pm-9:45 pm

Nonstop2h 38m

Chicago O'Hare Intl

Mon 9/14

5:00 am-9:47 am

1 stop5h 47m

$280

Rapid CityChicago

RAP Rapid City - MDW Chicago Midway

RAPMDW

Rapid City

Wed 10/21

6:39 am-11:47 am

1 stop4h 08m

Chicago Midway

Sat 10/24

5:31 pm-10:30 pm

1 stop5h 59m

$281

Rapid CityChicago

RAP Rapid City - MDW Chicago Midway

RAPMDW

Rapid City

Wed 9/2

10:46 am-6:01 pm

1 stop6h 15m

Chicago Midway

Wed 9/9

7:13 pm-10:18 pm

1 stop4h 05m

$281

Rapid CityChicago

RAP Rapid City - ORD Chicago O'Hare Intl

RAPORD

Rapid City

Tue 10/13

6:39 am-2:36 pm

1 stop6h 57m

Chicago O'Hare Intl

Sat 10/17

6:20 am-10:45 am

1 stop5h 25m

$281

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Other information

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from Rapid City is in April. Flight prices, which tend to average around $209, 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 April, then flying in June is also cheap. Prices for this month can be found on momondo for an average of $298.

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 Saturday when prices can be found for as low as $457. Flights from Rapid City to Illinois on a Sunday will generally be more expensive and average around $589. 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 morning. Flights from Rapid City to Illinois during this time can be as low as $478. Flights in the afternoon 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 30% 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	$308
Fastest flight time	2h 24m
Direct flights	Every day
Airports in Illinois	98 airports

The best one-way flight to Illinois from Rapid City in the past 72 hours is $308. The best round-trip flight deal from Rapid City to Illinois found on momondo in the last 72 hours is $369.

The fastest flight from Rapid City to Illinois takes 2h 24m

Direct flights go from Rapid City to Illinois every day.

There are 98 airports in Illinois. From Rapid City there are direct flights to Chicago O'Hare Intl (ORD).

Search flight deals

Frequently asked questions about flying from Rapid City to Illinois

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?
As of August 2026, there are 3 operators available to choose from 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?
Based on momondo bookings for flights between Rapid City and Illinois, the leading plane model is Boeing 737-900, making up 24.50% of the total bookings. Other popular models include Embraer 175 with 23.18%, Embraer 170 with 20.53%, and Embraer 175 (Enhanced Winglets) with 16.56%.

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 Airlines	PriceFrom $187	Free Cancellation	Rating 7.1 11,848 reviews		Search American Airlines flights
United Airlines	PriceFrom $230	Free Cancellation	Rating 7.4 10,058 reviews		Search United Airlines 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.