Question 1

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

Accepted Answer

Our most recent data shows that the best time of day to fly to Rapid City is in the afternoon. Flights from Illinois to Rapid City during this time can be as low as $276. Flights in the morning are often more expensive with an average ticket price of $359.

Question 2

How long does it take to fly to Rapid City?

Accepted Answer

Flight times vary depending on what airport in Illinois you fly out of and what airport in Rapid City you fly into. For example, flying from Chicago to Rapid City takes 3h 14m on average. On the other hand, flying from Peoria to Rapid City takes 4h 18m on average. Keep in mind that it’s always quicker to opt for a non-stop flight, so be sure to check momondo if there are any available for your route.

Question 3

What is the cheapest day to depart on your flight to Rapid City?

Accepted Answer

According to our data, Wednesday is the cheapest day to fly to Rapid City from Illinois. The lowest ticket price found for a Wednesday departure recently was $309. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Rapid City is Sunday, with ticket prices averaging around $384.

Question 4

How far in advance should I book a flight to Rapid City?

Accepted Answer

You are more likely to see cheaper flights to Rapid City from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Rapid City for around $327 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Rapid City from Illinois for as low as $266 on momondo.

Question 5

What airlines fly to Rapid City?

Accepted Answer

United Airlines, American Airlines and Delta are the top three most popular airlines that fly to Rapid City from Illinois according to our data. United Airlines is the first choice among our users, with 56% of people opting to fly with this airline when traveling to Rapid City. Keep in mind that there are 3 different airlines that fly to Rapid City on a routine basis, so you have a few additional options to choose from.

Question 6

What is the cheapest month to fly to Rapid City?

Accepted Answer

The month of February is, on average, the cheapest month to fly to Rapid City from Illinois, with most prices found around $218. If you aren’t able to travel to Rapid City during the month of February, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $228.

Question 7

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

Accepted Answer

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

Question 8

What is the cheapest Illinois to Rapid City flight route?

Accepted Answer

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

Question 9

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

Accepted Answer

7 flights are operational daily from Illinois to Rapid City as of July 2025. The most popular departure time for this route is 8:00PM, with 49% of flights per day taking off at noon.

Question 10

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

Accepted Answer

No. A direct flight is the cheapest option for a flight between Illinois to Rapid City.

Question 11

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

Accepted Answer

As of July 2025, there are 52 flights per week flying from Illinois to Rapid City. The most common day of the week flights depart is Mon, with 15% of flights taking off on this day.

Question 12

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

Accepted Answer

There are 3 cabin classes available to choose from on Illinois to Rapid City flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Question 13

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

Accepted Answer

Prices for flights from Illinois to Rapid City Airport are updated daily.

Question 14

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

Accepted Answer

As of July 2025, there are 3 operators available to choose from for flights from Illinois to Rapid City Airport.

Question 15

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

Accepted Answer

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 Illinois to Rapid City Airport.

Question 16

What documentation or ID do you need to fly to Rapid City Airport?

Accepted Answer

The travel and health documents required for your trip to Rapid City Airport 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 Rapid City Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best Price Found	$98
Fastest flight time	2h 21m
Direct flights	Every day
Airports in Rapid City	1 airport

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom $209	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Delta	PriceFrom $228	Free Cancellation	Rating 8.0 7,957 reviews	Search Delta flights
United Airlines	PriceFrom $232	Free Cancellation	Rating 7.4 8,863 reviews	Search United Airlines flights

Cheap flights from Illinois to Rapid City from $98

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Rapid City departing on 8/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Illinois to Rapid City

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

Delta flights from Illinois to Rapid City

Our best Delta deals on Illinois to Rapid City flight tickets

American Airlines flights from Illinois to Rapid City

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

See travel insights to Rapid City from

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

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 Rapid City?

What is the cheapest day to depart on your flight to Rapid City?

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

Our most recent data shows that the best time of day to fly to Rapid City is in the afternoon. Flights from Illinois to Rapid City during this time can be as low as $276. Flights in the morning are often more expensive with an average ticket price of $359.

What is the cheapest Illinois to Rapid City flight route?

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

How far in advance should I book a flight to Rapid City?

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

There are 3 cabin classes available to choose from on Illinois to Rapid City 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 Illinois to Rapid City flights?

No. A direct flight is the cheapest option for a flight between Illinois to Rapid City.

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

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

What airlines fly to Rapid City?

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

7 flights are operational daily from Illinois to Rapid City as of July 2025. The most popular departure time for this route is 8:00PM, with 49% of flights per day taking off at noon.

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

As of July 2025, there are 52 flights per week flying from Illinois to Rapid City. The most common day of the week flights depart is Mon, with 15% of flights taking off on this day.

How long does it take to fly to Rapid City?

Cheap Illinois to Rapid City flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in Rapid City

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

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

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

What documentation or ID do you need to fly to Rapid City Airport?

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

Best airlines flying from Illinois to Rapid City

Compare and see reviews for airlines that fly from Illinois to Rapid City with momondo

Traveling to a place near Rapid City?

Why use momondo?

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

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

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

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

An easier way to manage your Rapid City trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing South Dakota