STL - RAP

$339 Find Cheap Flights from St. Louis to Rapid City - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$339
Typical prices: $314-$458
Delta
Fri 4/6Tue 4/10
STL - RAP • 1 stop
Cheapest one-way
$339
Typical prices: $224-$345
United Airlines
Sun 4/8
STL - RAP • 2 stops
Nonstop flights
There are currently no direct flights between St. Louis and Rapid City. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to travel
Cheapest • 23% price drop
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Cheapest • Avg $377 (round-trip)
Shortest trip • 5h 04m (one-way)
Insights
Insights
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Flight Deals

Cheap Flights from St. Louis to Rapid City (STL-RAP)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from St. Louis to Rapid City

Tue, Apr 6 - Sat, Apr 10
Delta Logo
9:45 am - 3:46 pmSTL  Lambert-St Louis-RAP Rapid City
7h 01m1 stop Minneapolis St Paul
Delta Logo
11:30 am - 4:54 pmRAP  Rapid City-STL Lambert-St Louis
4h 24m1 stop Minneapolis St Paul
$339Delta
Tue, Apr 6 - Sat, Apr 10
United Airlines Logo
11:45 am - 8:33 pmSTL  Lambert-St Louis-RAP Rapid City
9h 48m2 stops Chicago O'Hare Intl Denver Intl
United Airlines Logo
11:25 am - 4:26 pmRAP  Rapid City-STL Lambert-St Louis
4h 01m1 stop Denver Intl
$355United Airlines
Thu, Nov 12 - Mon, Nov 16
United Airlines Logo
5:00 am - 10:31 amSTL  Lambert-St Louis-RAP Rapid City
6h 31m1 stop Chicago O'Hare Intl
United Airlines Logo
8:30 am - 4:57 pmRAP  Rapid City-STL Lambert-St Louis
7h 27m1 stop Denver Intl
$369United Airlines
Mon, Nov 9 - Thu, Nov 12
United Airlines Logo
5:00 am - 10:31 amSTL  Lambert-St Louis-RAP Rapid City
6h 31m1 stop Chicago O'Hare Intl
United Airlines Logo
10:30 am - 4:57 pmRAP  Rapid City-STL Lambert-St Louis
5h 27m1 stop Denver Intl
$369United Airlines
Mon, Nov 9 - Fri, Nov 13
Delta Logo
6:13 am - 10:23 amSTL  Lambert-St Louis-RAP Rapid City
5h 10m1 stop Minneapolis St Paul
Delta Logo
4:36 pm - 11:22 pmRAP  Rapid City-STL Lambert-St Louis
5h 46m1 stop Minneapolis St Paul
$369Delta
Mon, Nov 9 - Thu, Nov 12
United Airlines Logo
6:00 am - 10:31 amSTL  Lambert-St Louis-RAP Rapid City
5h 31m1 stop Chicago O'Hare Intl
United Airlines Logo
12:39 pm - 9:40 pmRAP  Rapid City-STL Lambert-St Louis
8h 01m2 stops Denver Intl Chicago O'Hare Intl
$374United Airlines
Mon, Nov 9 - Thu, Nov 12
Delta Logo
6:13 am - 10:23 amSTL  Lambert-St Louis-RAP Rapid City
5h 10m1 stop Minneapolis St Paul
Delta Logo
4:36 pm - 11:22 pmRAP  Rapid City-STL Lambert-St Louis
5h 46m1 stop Minneapolis St Paul
$399Delta
Thu, Nov 12 - Mon, Nov 16
American Airlines Logo
11:35 am - 9:27 pmSTL  Lambert-St Louis-RAP Rapid City
10h 52m2 stops Chicago O'Hare Intl Dallas/Fort Worth
American Airlines Logo
1:09 pm - 11:59 pmRAP  Rapid City-STL Lambert-St Louis
9h 50m2 stops Dallas/Fort Worth Chicago O'Hare Intl
$538American Airlines
Wed, Dec 23 - Sun, Dec 27
Delta Logo
6:30 am - 11:19 amSTL  Lambert-St Louis-RAP Rapid City
5h 49m1 stop Minneapolis St Paul
Delta Logo
4:37 pm - 11:28 pmRAP  Rapid City-STL Lambert-St Louis
5h 51m1 stop Minneapolis St Paul
$573Delta
Wed, Dec 23 - Sun, Dec 27
American Airlines Logo
8:22 pm - 12:42 pmSTL  Lambert-St Louis-RAP Rapid City
17h 20m2 stops Chicago O'Hare Intl Dallas/Fort Worth
American Airlines Logo
6:00 am - 7:52 pmRAP  Rapid City-STL Lambert-St Louis
12h 52m2 stops Dallas/Fort Worth Chicago O'Hare Intl
$1,010American Airlines
Booking Insights

Price, demand and travel trends for St. Louis to Rapid City flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from St. Louis to Rapid City?

Round-trip flights from St. Louis to Rapid City typically range from $314 to $458. The lowest price found in the past 5 days was $339, on Delta.

What's the cheapest day of the week to fly from St. Louis to Rapid City?

Based on deals KAYAK users found in the last 12 months, Tuesday is the cheapest day of the week to fly from St. Louis to Rapid City. It’s 4% cheaper than the average day, while Monday is the most expensive, with prices 27% higher.

Key details for St. Louis to Rapid City flights

Low season

January

Cheapest flight

$339
Beat the crowds with an average 75% drop in travelers.
The most popular month to fly with an average 102% increase in travelers.
One-way flight from St. Louis to Rapid City

When to book flights from St. Louis to Rapid City

Are your dates flexible? Find out the best times to travel from St. Louis to Rapid City based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your St. Louis to Rapid City flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What cabin classes can I book on flights from St. Louis to Rapid City?

    Two cabin classes are available on flights from St. Louis to Rapid City:

    • Economy Class
    • First Class

  • How long is a flight from St. Louis to Rapid City?

    A nonstop flight from St. Louis to Rapid City takes 00m, covering 751 miles.

  • Do I need a passport to fly from St. Louis to Rapid City?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

  • How much should I expect to pay for a St. Louis to Rapid City flight?

    Round-trip flights from St. Louis to Rapid City range from $314 to $458, with an average of $376 over the past 12 months. Anything below $314 counts as a good deal.

  • Have flight prices from St. Louis to Rapid City changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $339 to $1,010. That means the highest observed fare was about 3x higher than the lowest one.

  • How are flight prices from St. Louis to Rapid City looking right now?

    One-way fares from St. Louis to Rapid City are currently higher than usual. Average one-way flight prices are about $570, which is 128% above the typical average for this route.

  • What car rental options are available at Rapid City Airport (RAP)?

    Rapid City Airport (RAP) hosts 5 major car rental companies, with daily rates averaging $112 for economy cars. Top options include:

    • Budget
    • Hertz
    • Alamo
    • Thrifty
    • Enterprise Rent-A-Car

  • Which airports can I use when flying from St. Louis to Rapid City?

    Flights from St. Louis to Rapid City usually depart from Lambert-St Louis (STL) and arrive at Rapid City (RAP).

  • Which airports do connecting flights from St. Louis to Rapid City pass through?

    One-stop flights from St. Louis to Rapid City most commonly connect through:

    • Denver Intl (DEN) - 48% of one-stop connections
    • Minneapolis St Paul (MSP) - 29% of one-stop connections
    • Chicago O'Hare Intl (ORD) - 13% of one-stop connections
    • Dallas/Fort Worth (DFW) - 9% of one-stop connections

  • Can I save money by using flexible dates for flights from St. Louis to Rapid City?

    Yes. Flexible dates can save you up to 24% on flights from St. Louis to Rapid City. Tuesday is the cheapest departure day at $364 round-trip on average, while Monday is the most expensive at $478, a difference of $114.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • How much time can I save by choosing a different layover airport from St. Louis to Rapid City?

    Flying via Denver Intl (DEN) gives the shortest average 1-stop total travel time at 5h 04m, compared with 5h 23m via Chicago O'Hare Intl (ORD) and 5h 26m via Minneapolis St Paul (MSP).

  • What is the time difference between St. Louis and Rapid City?

    Rapid City is 1 hour behind St. Louis (Mountain Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

Your guide to booking St. Louis to Rapid City flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Tuesday departure and avoid flying on Monday. On this route, Tuesday flights average $364, about $114 less than Monday fares (24% savings) based on the last 12 months.
  • If you can choose when to travel, plan your St. Louis to Rapid City trip for February. Fares historically average $289 round-trip in that month - typically $269 less than the most expensive month, which is October (based on the last 12 months).

More options for your flight from St. Louis to Rapid City

Complete your trip to Rapid City with a hotel stay or car rental