Cheap flights from Portland to Rapid City Regional

Compare Portland to Rapid City Regional flight deals

Find the cheapest month or even day of the year to fly to Rapid City Regional

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Flight deals from Portland to Rapid City Regional

Looking for a cheap last-minute deal or the best round-trip flight from Portland to Rapid City Regional? Find the lowest prices on one-way and round-trip tickets right here.

Find the cheapest month to fly from Portland to Rapid City Regional

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Portland to Rapid City Regional flights are currently cheapest in April.

Portland to Rapid City Regional: Alternative routes

Compare routes from Portland to Rapid City below. You may find an airport to fly into that's cheaper, faster, or easier than Rapid City Regional.

Portland to Rapid City: Flight information

The things to know before you go.
Cheapest flight found$279
Cheapest month to flyApril

Finding cheap flights from Portland to Rapid City Regional: Frequently asked questions

The best price we found for a round-trip flight from Portland to Rapid City Regional is $279. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Portland to Rapid City Regional. But we found flights with one or more stops from $279.
There are no flights flying from Portland to Rapid City Regional, as of March 2026.
The cheapest month to fly from Portland to Rapid City Regional is usually April.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Portland Airport to Rapid City Regional Airport on Friday, April 10, 2026.
No airlines currently offer direct flights between Portland Airport and Rapid City Regional Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Rapid City Regional but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to Rapid City is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, United offers the cheapest flight tickets to Rapid City Regional.

Flying from Portland International Airport (PDX) to Rapid City Regional Airport (RAP): what you need to know

  • To ensure you catch your PDX to RAP flight, allow plenty of time to check in and drop off your luggage. Turning up two hours ahead of international departures and one hour before domestic flights is the standard rule.

  • Traveling during a peak time like July? Major public holidays and other popular periods can lead to longer queues at check-in and security. Be extra cautious and arrive up to four hours before an international flight and two hours before a domestic departure.

  • If you'd like to explore another city along the way, simply deselect 'Direct flights only' when searching for your ticket from Portland International Airport to Rapid City Regional Airport. Here are the most popular stopovers between PDX and RAP:

    • Denver International Airport

    • Harry Reid Airport (formerly McCarran Airport)

    • San Francisco International Airport

How to find the cheapest flights from Portland International Airport (PDX) to Rapid City Regional Airport (RAP)

  • At the moment, $190 is the cheapest price we've found for a one-way Portland International Airport to Rapid City Regional Airport flight. The best price for a return ticket is $279. Keep in mind that fares can change due to demand when booking.

  • Don't leave things to the last minute. You're more likely to find cheap tickets from PDX to RAP if you book in advance. Airlines often have some fantastic early bird rates.

  • Finding cheap flights from Portland International Airport to Rapid City Regional Airport is more likely if you're flexible with your dates. Use the 'Whole month' function to see the lowest fares across the month and bag a great deal.

  • You won't have to check every day to see if fares have dropped when you create a Price Alert. We'll send you an update as soon as there's a better deal on cheap flights from PDX to RAP.

  • Pick your ideal arrival and departure times, airlines and number of stops with the filters. Or sort your results by 'Cheapest' to see the best deals on flights from Portland International Airport to Rapid City Regional Airport.

Handy information about Portland International Airport (PDX)

  • You'll find PDX at 7000 NE Airport Way.

  • Portland International Airport gets high marks for its on-time performance. 83.65% of flights that take off from PDX arrive at their destination without delay.

  • Portland International Airport is about 19 kilometers from central Portland. If you're driving, ride-sharing or catching a cab from the center, it'll take you 20 minutes or so to get there, depending on the traffic.

  • Taking public transport? You can expect a journey time of around 45 minutes.

  • Catching an early flight from Portland International Airport to Rapid City Regional Airport? Avoid rushing to the airport (and catch some extra z's) by choosing one of these stays close to PDX:

Arriving at Rapid City Regional Airport (RAP)

  • Step off your Portland International Airport to Rapid City Regional Airport flight and be in your hotel bed soon after. If you're looking for a comfy option that's not too far from RAP, unpack your bags at La Quinta Inn & Suites by Wyndham Rapid City.

  • Get on the fast track to adventure by picking up a Rapid City Regional Airport rental car. Grab a set of wheels from Avis, Alamo or Enterprise to explore Rapid City and beyond.

  • To lock in the best rate, book your vehicle from Rapid City Regional Airport a few weeks in advance. Rates generally rise as your departure date approaches.

Getting from Rapid City Regional Airport (RAP) to central Rapid City

  • The street address for RAP is 4550 Terminal Road, Suite 102.

  • From Rapid City Regional Airport, Rapid City is approximately 18 kilometers away. It takes around 20 minutes to get to the center driving.

When to fly to Rapid City Regional Airport (RAP)

  • It's time to choose your trip dates for your flight from Portland International Airport to Rapid City Regional Airport. August is the most popular month to head to Rapid City. If you want a more laid-back vibe, go in February.

  • The warmest month in Rapid City is July, with temperatures ranging between 14ºC (57ºF) and 32ºC (90ºF). Lock in your flights from Portland International Airport to Rapid City Regional Airport in this month if you enjoy this type of weather.

  • If you'd rather travel in cooler conditions, search for a cheap ticket from PDX to RAP in February. Average temperatures are between -16ºC (3ºF) and 7ºC (45ºF) then.

Explore more of United States

  • Rapid City has its own special appeal, but there are so many other corners of United States just waiting to be discovered. Around 418 kilometers south of Rapid City, a visit to Fort Collins will keep you on the go. Start with attractions like Jack Lantern's Northern Colorado Corn Maze, Fort Collins Country Club and State Fort Collins.

  • If you're ready to explore another side of United States, head for Thornton, about 483 kilometers south of Rapid City. Margaret W Carpenter Recreation Center, Thorncreek Golf Course and Avaya are the start of reasons to visit.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.