$132 Cheap Flights from Baltimore (BWI) to Rapid City (RAP)

View $132 flight on Fri, Aug 21, 2026Opens in a new window

Popular airlines from Baltimore Washington Intl. Airport (BWI) to Rapid City Regional Airport (RAP)

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Cheap Flights from Baltimore to Rapid City (BWI-RAP)

Prices were available within the past 7 days and start at $132 for one-way flights and $269 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, Dec 10 - Mon, Dec 15
BWI
Baltimore
RAP
Rapid City
$269 Roundtrip, found 3 hours ago
$269
Roundtrip
found 3 hours ago
Select Delta flight, departing Wed, Dec 10 from Baltimore to Rapid City, returning Mon, Dec 15, priced at $269 found 3 hours ago
United
Wed, Dec 10 - Mon, Dec 15
BWI
Baltimore
RAP
Rapid City
$269 Roundtrip, found 3 hours ago
$269
Roundtrip
found 3 hours ago
Select United flight, departing Wed, Dec 10 from Baltimore to Rapid City, returning Mon, Dec 15, priced at $269 found 3 hours ago
United
Wed, Dec 10 - Mon, Dec 15
BWI
Baltimore
RAP
Rapid City
$274 Roundtrip, found 3 hours ago
$274
Roundtrip
found 3 hours ago
Select United flight, departing Wed, Dec 10 from Baltimore to Rapid City, returning Mon, Dec 15, priced at $274 found 3 hours ago
Delta
Wed, Jan 7 - Sat, Jan 17
BWI
Baltimore
RAP
Rapid City
$279 Roundtrip, found 2 days ago
$279
Roundtrip
found 2 days ago
Select Delta flight, departing Wed, Jan 7 from Baltimore to Rapid City, returning Sat, Jan 17, priced at $279 found 2 days ago
United
Thu, Nov 27 - Fri, Dec 5
BWI
Baltimore
RAP
Rapid City
$288 Roundtrip, found 1 hour ago
$288
Roundtrip
found 1 hour ago
Select United flight, departing Thu, Nov 27 from Baltimore to Rapid City, returning Fri, Dec 5, priced at $288 found 1 hour ago
United
Sat, Dec 6 - Sat, Dec 13
BWI
Baltimore
RAP
Rapid City
$289 Roundtrip, found 3 days ago
$289
Roundtrip
found 3 days ago
Select United flight, departing Sat, Dec 6 from Baltimore to Rapid City, returning Sat, Dec 13, priced at $289 found 3 days ago
United
Wed, Dec 10 - Mon, Dec 15
BWI
Baltimore
RAP
Rapid City
$293 Roundtrip, found 3 hours ago
$293
Roundtrip
found 3 hours ago
Select United flight, departing Wed, Dec 10 from Baltimore to Rapid City, returning Mon, Dec 15, priced at $293 found 3 hours ago
United
Wed, Dec 10 - Mon, Dec 15
BWI
Baltimore
RAP
Rapid City
$297 Roundtrip, found 3 hours ago
$297
Roundtrip
found 3 hours ago
Select United flight, departing Wed, Dec 10 from Baltimore to Rapid City, returning Mon, Dec 15, priced at $297 found 3 hours ago
Delta
Fri, Jan 16 - Sat, Jan 17
BWI
Baltimore
RAP
Rapid City
$299 Roundtrip, found 5 hours ago
$299
Roundtrip
found 5 hours ago
Select Delta flight, departing Fri, Jan 16 from Baltimore to Rapid City, returning Sat, Jan 17, priced at $299 found 5 hours ago
American Airlines
Mon, Mar 2 - Tue, Mar 24
BWI
Baltimore
RAP
Rapid City
$320 Roundtrip, found 2 days ago
$320
Roundtrip
found 2 days ago
Select American Airlines flight, departing Mon, Mar 2 from Baltimore to Rapid City, returning Tue, Mar 24, priced at $320 found 2 days ago

Find the cheapest month to fly from Baltimore (BWI) to Rapid City (RAP)

September is typically the cheapest month to fly

From $268 - $469 per traveler.

Alternative airports near Rapid City

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Rapid City Regional RAP. Cheapest and Closest option available. Average driving time to city center is 16 minutes. Flights from $304
RAP
Rapid City Regional
CheapestClosest
Average driving time to city center16 min
Flights from $304

Frequently asked questions

How much does a flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Rapid City Regional Airport (RAP) cost?
Secure a cheap one-way flight from $132 or cheap return flight from $269 from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Rapid City Regional Airport (RAP) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Rapid City Regional Airport (RAP)?
The cheapest month to fly from BWI to RAP is December, when there's less demand. Off-peak season is typically when airlines offer lower prices between these airports.
What is the cheapest airline that flies from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Rapid City Regional Airport (RAP)?
Expedia's filter tool lets you easily compare airlines, flight times and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest BWI to RAP flight.
How many flights per day from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Rapid City Regional Airport (RAP)?
You'll have to hop on a flight with a layover when traveling from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Rapid City Regional Airport (RAP). Direct flights don't operate daily on this route. However, simply filter your search to include one or more stops to find the best option for your trip.
What day of the week has the most flights from BWI to RAP?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can change depending on various factors, such as the season and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Rapid City Regional Airport (RAP)?
Choose a flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Rapid City Regional Airport (RAP) that takes off before 3 PM to reduce the likelihood of delays. Later departures are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Rapid City Regional Airport (RAP) last-minute?
Holding off until just before your departure to book a ticket from BWI to RAP often results in higher prices. While you may find some last-minute offers, there's no guarantee. Keep your travel plans flexible for a better chance of snagging a bargain.
Is it cheaper to book a BWI to RAP flight and hotel package?
Compared with arranging flights and hotels separately, booking a BWI to RAP flight and hotel package with Expedia could lead to significant savings. What's more, having it all in one place will take the hassle out of planning your trip. Just pick your flights and choose from our extensive range of stays, then personalize your trip with extras like tours and car rentals.
Can I cancel or change the date of my flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Rapid City Regional Airport (RAP)?
In most cases, you can cancel or reschedule your BWI to RAP flight. However, there may be additional fees, especially if you booked over 24 hours ago. Check your itinerary for the airline's guidelines and fees on flight changes, or if you want further details, go to our Customer Service portal.

Travel information

Origin airport
Baltimore Washington Intl. Thurgood Marshall
Destination airport
Rapid City Regional
Airlines serving
American Airlines, Delta, United
Roundtrip price
$268
Distance
1397 mi

Book with confidence

Baltimore to Rapid City Flights

The cheapest times to fly from Baltimore to Rapid City

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Baltimore to Rapid City are during the month of December. You can find some of the cheapest flights from Baltimore to Rapid City with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Baltimore to Rapid City

Sunday is one of the best days to book for cheap flights from Baltimore to Rapid City: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Baltimore to Rapid City

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Baltimore to Rapid City in 2025. You can also book with separate airlines for your outbound and return journeys, from $132 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Baltimore to Rapid City flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Baltimore to Rapid City airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Baltimore to Rapid City Flights

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*Available to One Key members.