What airlines fly to Rapid City?

United Airlines, American Airlines and Delta are the top three most popular airlines that fly to Rapid City from St. Louis according to our data. United Airlines is the first choice among our users, with 44% 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.

What is the cheapest airline that flies from Lambert-St Louis to Rapid City?

United Airlines is the most popular carrier operating from Lambert-St Louis to Rapid City

When did momondo last update prices for flights from Lambert-St Louis Airport to Rapid City Airport?

Prices for flights from Lambert-St Louis Airport to Rapid City Airport were last updated today.

How many operators does momondo search for flights from Lambert-St Louis Airport to Rapid City Airport?

As of January 2026, there are 3 operators available to choose from for flights from Lambert-St Louis Airport to Rapid City Airport.

How old do you have to be to fly from Lambert-St Louis Airport to Rapid City Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Rapid City Airport.

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

The necessary travel and health documents for your Rapid City Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$221 Cheap Flights from St. Louis to Rapid City in 2026

1 adult

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Find the cheapest flights from St. Louis to Rapid City

Round-trip

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Cheap round-trip flights

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6:10 am - 10:13 am

STL

RAP

5h 03m1 stop

4:10 pm - 11:25 pm

RAP

STL

6h 15m1 stop

$279Delta

Thu, Jan 15 - Mon, Jan 19

6:35 am - 3:25 pm

STL

RAP

9h 50m2 stops

4:10 pm - 11:25 pm

RAP

STL

6h 15m1 stop

$296Delta

Thu, Jan 15 - Mon, Jan 19

6:35 am - 3:25 pm

STL

RAP

9h 50m2 stops

6:00 am - 4:37 pm

RAP

STL

9h 37m2 stops

$346Delta

Thu, Jan 15 - Mon, Jan 19

4:15 pm - 10:29 pm

STL

RAP

7h 14m1 stop

2:40 pm - 8:58 pm

RAP

STL

5h 18m1 stop

$349United Airlines

Tue, Jan 13 - Sat, Jan 17

9:57 am - 7:14 pm

STL

RAP

10h 17m2 stops

12:35 pm - 8:58 pm

RAP

STL

7h 23m1 stop

$354United Airlines

Tue, Jan 13 - Sat, Jan 17

9:57 am - 7:14 pm

STL

RAP

10h 17m2 stops

7:00 am - 5:43 pm

RAP

STL

9h 43m2 stops

$359United Airlines

Tue, Jan 13 - Sat, Jan 17

4:15 pm - 10:29 pm

STL

RAP

7h 14m1 stop

7:00 am - 1:16 pm

RAP

STL

5h 16m1 stop

$379United Airlines

Tue, Jan 13 - Sat, Jan 17

9:57 am - 7:14 pm

STL

RAP

10h 17m2 stops

7:00 am - 1:16 pm

RAP

STL

5h 16m1 stop

$384United Airlines

Tue, Jan 13 - Sat, Jan 17

11:20 am - 8:32 pm

STL

RAP

10h 12m2 stops

12:35 pm - 9:13 pm

RAP

STL

7h 38m2 stops

$389United Airlines

Tue, Jan 13 - Sat, Jan 17

Delta flights from St. Louis to Rapid City

Our best Delta deals on St. Louis to Rapid City flight tickets

Delta

Jan 15

STL6:10 amLambert-St Louis

5h 03m

1 stop

RAP10:13 amRapid City

Jan 19

RAP4:10 pmRapid City

6h 15m

1 stop

STL11:25 pmLambert-St Louis

$279

Find similar

Delta

Jan 17

STL11:23 amLambert-St Louis

5h 02m

1 stop

RAP3:25 pmRapid City

Jan 21

RAP10:54 amRapid City

11h 43m

2 stops

STL11:37 pmLambert-St Louis

$284

Find similar

Delta

Jan 15

STL6:35 amLambert-St Louis

9h 50m

2 stops

RAP3:25 pmRapid City

Jan 19

RAP4:10 pmRapid City

6h 15m

1 stop

STL11:25 pmLambert-St Louis

$296

Find similar

United Airlines flights from St. Louis to Rapid City

Our best United Airlines deals on St. Louis to Rapid City flight tickets

United Airlines

Jan 10

STL4:15 pmLambert-St Louis

7h 14m

1 stop

RAP10:29 pmRapid City

Jan 17

RAP12:35 pmRapid City

7h 38m

2 stops

STL9:13 pmLambert-St Louis

$314

Find similar

United Airlines

Jan 10

STL1:15 pmLambert-St Louis

10h 14m

2 stops

RAP10:29 pmRapid City

Jan 17

RAP12:35 pmRapid City

7h 38m

2 stops

STL9:13 pmLambert-St Louis

$320

Find similar

United Airlines

Jan 13

STL4:15 pmLambert-St Louis

7h 14m

1 stop

RAP10:29 pmRapid City

Jan 17

RAP2:40 pmRapid City

5h 18m

1 stop

STL8:58 pmLambert-St Louis

$349

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisRapid City

STL - RAP

STLRAP

Lambert-St Louis

Thu 1/15

6:10 am-10:13 am

1 stop5h 03m

Rapid City

Mon 1/19

4:10 pm-11:25 pm

1 stop6h 15m

$279

St. LouisRapid City

STL - RAP

STLRAP

Lambert-St Louis

Thu 1/15

6:35 am-3:25 pm

2 stops9h 50m

Rapid City

Mon 1/19

4:10 pm-11:25 pm

1 stop6h 15m

$296

St. LouisRapid City

STL - RAP

STLRAP

Lambert-St Louis

Thu 1/15

6:35 am-3:25 pm

2 stops9h 50m

Rapid City

Mon 1/19

6:00 am-4:37 pm

2 stops9h 37m

$346

St. LouisRapid City

STL - RAP

STLRAP

Lambert-St Louis

Tue 1/13

4:15 pm-10:29 pm

1 stop7h 14m

Rapid City

Sat 1/17

2:40 pm-8:58 pm

1 stop5h 18m

$349

St. LouisRapid City

STL - RAP

STLRAP

Lambert-St Louis

Tue 1/13

9:57 am-7:14 pm

2 stops10h 17m

Rapid City

Sat 1/17

12:35 pm-8:58 pm

1 stop7h 23m

$354

St. LouisRapid City

STL - RAP

STLRAP

Lambert-St Louis

Tue 1/13

9:57 am-7:14 pm

2 stops10h 17m

Rapid City

Sat 1/17

7:00 am-5:43 pm

2 stops9h 43m

$359

St. LouisRapid City

STL - RAP

STLRAP

Lambert-St Louis

Tue 1/13

4:15 pm-10:29 pm

1 stop7h 14m

Rapid City

Sat 1/17

7:00 am-1:16 pm

1 stop5h 16m

$379

St. LouisRapid City

STL - RAP

STLRAP

Lambert-St Louis

Tue 1/13

9:57 am-7:14 pm

2 stops10h 17m

Rapid City

Sat 1/17

7:00 am-1:16 pm

1 stop5h 16m

$384

St. LouisRapid City

STL - RAP

STLRAP

Lambert-St Louis

Tue 1/13

11:20 am-8:32 pm

2 stops10h 12m

Rapid City

Sat 1/17

12:35 pm-9:13 pm

2 stops7h 38m

$389

St. LouisRapid City

STL - RAP

STLRAP

Lambert-St Louis

Mon 1/19

2:45 pm-8:32 pm

1 stop6h 47m

$221

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 resultsSorted by cheapest first

How to get the cheapest flight ticket from St. Louis 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

Prices

Airlines

What is the cheapest month to fly to Rapid City?

The month of August is, on average, the cheapest month to fly to Rapid City from St. Louis, with most prices found around $266. If you aren’t able to travel to Rapid City during the month of August, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $268.

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

You are more likely to see cheaper flights to Rapid City from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Rapid City for around $367 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Rapid City from St. Louis for as low as $251 on momondo.

When to book flights from St. Louis to Rapid City

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Rapid City according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap St. Louis to Rapid City (STL to RAP) flight deals and tips

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

Fastest flight time	4h 28m
Direct flights	None

The fastest flight from St. Louis to Rapid City takes 4h 28m

There are no direct flights from St. Louis to Rapid City. There are no popular flight routes from St. Louis to Rapid City.

Search flight deals

How far is Lambert-St Louis to Rapid City by plane?
There are 772.0 mi between Lambert-St Louis and Rapid City. Flights usually cover this in 4h 28m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Lambert-St Louis Airport to Rapid City Airport?
Prices for flights from Lambert-St Louis Airport to Rapid City Airport were last updated today.
How many operators does momondo search for flights from Lambert-St Louis Airport to Rapid City Airport?
As of January 2026, there are 3 operators available to choose from for flights from Lambert-St Louis Airport to Rapid City Airport.
How old do you have to be to fly from Lambert-St Louis Airport to Rapid City Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Rapid City Airport.
What documentation or ID do you need to fly to Rapid City Airport?
The necessary travel and health documents for your Rapid City Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from St. Louis to Rapid City?
momondo data reveals that the most frequently booked airline on the route from St. Louis to Rapid City is United Airlines, representing 44% of all bookings. The subsequent popular airlines are American Airlines at 33% and Delta at 23%.

Best airlines flying from St. Louis to Rapid City

Compare and see reviews for airlines that fly from St. Louis to Rapid City with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $248	Free Cancellation	Rating 7.9 8,021 reviews	Search Delta flights
American Airlines	PriceFrom $248	Free Cancellation	Rating 7.2 11,075 reviews	Search American Airlines flights
United Airlines	PriceFrom $253	Free Cancellation	Rating 7.4 9,132 reviews	Search United Airlines flights

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Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Rapid City?

It is quick and easy to find St. Louis to Rapid City flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Rapid City that suits you.

Can I find flights from St. Louis to Rapid City with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for St. Louis to Rapid City flights to just show those with flexible booking policies.

How can momondo help me find flights from St. Louis to Rapid City?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from St. Louis to Rapid City.

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

Of course. momondo tracks the price of St. Louis to Rapid City flights. All you need is a valid email address and we will do the rest; it is that quick and easy.