$186 Cheap Flights from Portland (PWM) to Rapid City (RAP)

View $186 flight on Tue, Nov 18, 2025Opens in a new window

Popular airlines from Portland Intl. Jetport Airport (PWM) to Rapid City Regional Airport (RAP)

Cheap Flights from Portland to Rapid City (PWM-RAP)

Prices were available within the past 7 days and start at $186 for one-way flights and $294 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Fri, Oct 24 - Wed, Oct 29
PWM
Portland
RAP
Rapid City
$294 Roundtrip, found 1 day ago
$294
Roundtrip
found 1 day ago
Select Delta flight, departing Fri, Oct 24 from Portland to Rapid City, returning Wed, Oct 29, priced at $294 found 1 day ago
Delta
Thu, Nov 20 - Tue, Dec 9
PWM
Portland
RAP
Rapid City
$299 Roundtrip, found 4 days ago
$299
Roundtrip
found 4 days ago
Select Delta flight, departing Thu, Nov 20 from Portland to Rapid City, returning Tue, Dec 9, priced at $299 found 4 days ago
Delta
Fri, Oct 24 - Tue, Oct 28
PWM
Portland
RAP
Rapid City
$319 Roundtrip, found 1 day ago
$319
Roundtrip
found 1 day ago
Select Delta flight, departing Fri, Oct 24 from Portland to Rapid City, returning Tue, Oct 28, priced at $319 found 1 day ago
Delta
Fri, Dec 5 - Tue, Dec 16
PWM
Portland
RAP
Rapid City
$324 Roundtrip, found 4 days ago
$324
Roundtrip
found 4 days ago
Select Delta flight, departing Fri, Dec 5 from Portland to Rapid City, returning Tue, Dec 16, priced at $324 found 4 days ago
Delta
Thu, Oct 23 - Tue, Oct 28
PWM
Portland
RAP
Rapid City
$344 Roundtrip, found 1 day ago
$344
Roundtrip
found 1 day ago
Select Delta flight, departing Thu, Oct 23 from Portland to Rapid City, returning Tue, Oct 28, priced at $344 found 1 day ago
Delta
Fri, Oct 24 - Sat, Oct 25
PWM
Portland
RAP
Rapid City
$346 Roundtrip, found 1 day ago
$346
Roundtrip
found 1 day ago
Select Delta flight, departing Fri, Oct 24 from Portland to Rapid City, returning Sat, Oct 25, priced at $346 found 1 day ago
Delta
Thu, Nov 20 - Mon, Dec 8
PWM
Portland
RAP
Rapid City
$347 Roundtrip, found 4 days ago
$347
Roundtrip
found 4 days ago
Select Delta flight, departing Thu, Nov 20 from Portland to Rapid City, returning Mon, Dec 8, priced at $347 found 4 days ago
Delta
Wed, Oct 22 - Tue, Oct 28
PWM
Portland
RAP
Rapid City
$349 Roundtrip, found 1 day ago
$349
Roundtrip
found 1 day ago
Select Delta flight, departing Wed, Oct 22 from Portland to Rapid City, returning Tue, Oct 28, priced at $349 found 1 day ago
United
Thu, Oct 23 - Mon, Oct 27
PWM
Portland
RAP
Rapid City
$359 Roundtrip, found 1 day ago
$359
Roundtrip
found 1 day ago
Select United flight, departing Thu, Oct 23 from Portland to Rapid City, returning Mon, Oct 27, priced at $359 found 1 day ago
American Airlines
Wed, Jan 14 - Sat, Jan 31
PWM
Portland
RAP
Rapid City
$389 Roundtrip, found 4 days ago
$389
Roundtrip
found 4 days ago
Select American Airlines flight, departing Wed, Jan 14 from Portland to Rapid City, returning Sat, Jan 31, priced at $389 found 4 days ago

Find the cheapest month to fly from Portland (PWM) to Rapid City (RAP)

September is typically the cheapest month to fly

From $288 - $714 per traveler.
Flights from Portland (PWM) to Rapid City (RAP)
Origin airport
Portland Intl. Jetport
Destination airport
Rapid City Regional
Airlines serving
American Airlines, Delta, United
Roundtrip price
$294
Distance
1621 mi

Portland to Rapid City Flights

The cheapest times to fly from Portland 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 Portland to Rapid City are during the month of October. You can find some of the cheapest flights from Portland to Rapid City with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Portland 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 Portland 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 Portland to Rapid City in 2025. You can also book with separate airlines for your outbound and return journeys, from $186 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 Portland 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 Portland 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.

 

Frequently asked questions

How much does a flight from Portland Intl. Jetport Airport (PWM) to Rapid City Regional Airport (RAP) cost?
Lock in a cheap one-way flight from $186 or cheap return flight from $294 from Portland Intl. Jetport Airport (PWM) to Rapid City Regional Airport (RAP) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Portland Intl. Jetport Airport (PWM) to Rapid City Regional Airport (RAP)?
October is the cheapest month to fly from PWM to RAP. Traveling during quieter months is often the key to scoring lower fares.
What is the cheapest airline that flies from Portland Intl. Jetport Airport (PWM) to Rapid City Regional Airport (RAP)?
Use the filter tool on Expedia to compare different airlines and find the cheapest carrier that'll take you from PWM to RAP. Then, sort your results by "Price (lowest to highest)" to snag a great deal.
How many flights per day from Portland Intl. Jetport Airport (PWM) to Rapid City Regional Airport (RAP)?
There aren't any daily nonstop flights departing from Portland Intl. Jetport Airport (PWM) to Rapid City Regional Airport (RAP). But you can choose flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be soaring above the clouds in no time.
What day of the week has the most flights from PWM to RAP?
Usually you'll find the greatest selection of flight options on a Friday. Tuesdays tend to be the quietest.* However, this can change depending on the time of year, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Portland Intl. Jetport Airport (PWM) to Rapid City Regional Airport (RAP)?
Opt for a flight from Portland Intl. Jetport Airport (PWM) to Rapid City Regional Airport (RAP) that leaves before 3 PM to reduce the risk of cancellations and delays. Departures later than this 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 Portland Intl. Jetport Airport (PWM) to Rapid City Regional Airport (RAP) last-minute?
Holding off until just before your trip to book a flight from PWM to RAP generally means paying more. Although you may find some last-minute deals, there's no guarantee. Be flexible with your itinerary for the best chance of landing a bargain.
Is it cheaper to book a PWM to RAP flight and hotel package?
You'll typically save money by booking a PWM to RAP flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one place. After selecting your preferred flights and accommodations, you can add extras such as activities, tours and car rentals.
Can I cancel or change the date of my flight from Portland Intl. Jetport Airport (PWM) to Rapid City Regional Airport (RAP)?
In most cases, you can cancel or reschedule your PWM to RAP flight. However, there may be additional charges, especially if you booked over 24 hours ago. Double-check your itinerary for the airline's guidelines and fees on flight changes, or if you'd like more information, head to our Customer Service portal.

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*Available to One Key members.