Cheap flight tickets from Rapid City Regional to Portland

Compare Rapid City Regional to Portland flight deals

Find the cheapest month or even day of the year to fly to Portland

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

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

Rapid City Regional to Portland: Alternative routes

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

Rapid City to Portland: Flight information

The things to know before you go.
Cheapest flight foundRM825
Cheapest month to flyAugust

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

The best price we found for a return flight from Rapid City Regional to Portland is RM1,335. 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 Rapid City Regional to Portland. But we found flights with one or more stops from RM1,333.
As of May 2026, there are no flights flying from Rapid City Regional to Portland.
The cheapest month to fly from Rapid City Regional to Portland is usually July.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Rapid City Regional Airport to Portland Airport on Thursday, 30 July 2026.
No airlines currently offer direct flights between Rapid City Regional Airport and Portland 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 Portland 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 Portland is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, United offers the cheapest flight tickets to Portland.

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

  • Portland's timezone is UTC-7, making Portland one hour behind Rapid City.

  • Arrive at the airport on time so you don't miss your RAP to PDX flight. Be there at least two hours ahead for international flights and an hour early for domestic departures to avoid any last-minute rush.

  • During popular months like August, it's a good idea to get to the airport even earlier. Arrive two hours before domestic departures and four hours ahead for international flights when you travel during a high season in general.

  • Think about adding a stopover when booking your ticket from Rapid City Regional Airport to Portland International Airport. Just deselect 'Direct flights only' to break up your journey, or maybe even explore a new city along the way. Here's where you can stop between RAP and PDX:

    • Denver International Airport

    • Minneapolis-St. Paul International Airport

    • Harry Reid Airport (formerly McCarran Airport)

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

  • RM826 is the best price for a one-way Rapid City Regional Airport to Portland International Airport flight. A return flight starts from RM1,333. These fares may change based on availability.

  • It's often best to book as early as possible if you're hoping to get cheap tickets from RAP to PDX. That's because flight prices are based on demand, which tends to increase closer to the date of departure.

  • The 'Whole month' search tool shows you the cheapest flights from Rapid City Regional Airport to Portland International Airport across the month. It's a great way to snap up a bargain if your dates aren't set in stone.

  • Finding cheap flights from RAP to PDX is a piece of cake with Price Alerts. All you need to do is set up one of these automatic alerts and we'll notify you when a lower fare pops up.

  • Find the right flight for you with the help of the filters. To see the 'Fastest,' 'Best' or 'Cheapest' flights from Rapid City Regional Airport to Portland International Airport, use the 'Sort by' tool. You can also filter results by departure and arrival times, airline, and number of stops.

Handy information about Rapid City Regional Airport (RAP)

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

  • 77.55% of flights that depart Rapid City Regional Airport arrive at their destination on schedule.

  • To get to Rapid City Regional Airport from central Rapid City, it takes about 20 minutes by car. Of course, this depends on traffic. It's approximately 18 kilometres from the airport to the city centre.

  • Searching for a hotel to stay in before your flight from Rapid City Regional Airport to Portland International Airport? Consider La Quinta Inn & Suites by Wyndham Rapid City. Enjoy a good night's rest here before making your way to RAP.

Arriving at Portland International Airport (PDX)

Getting from Portland International Airport (PDX) to central Portland

  • The street address for PDX is 7000 NE Airport Way.

  • Portland International Airport to central Portland has a drive time of around 20 minutes. It's approximately 19 kilometres away.

  • If you're travelling on public transport, expect a journey time of roughly 45 minutes.

When to fly to Portland International Airport (PDX)

  • July is the most popular month for flights from Rapid City Regional Airport to Portland International Airport. To steer clear of the crowds, visit Portland in May.

  • Book your flight from Rapid City Regional Airport to Portland International Airport for August if you'd like to visit Portland during its warmest month. Expect temperatures of between 12ºC (54ºF) and 31ºC (88ºF).

  • Look for cheap tickets from RAP to PDX in December if you like travelling in cooler conditions. Temperatures are at their lowest around then, ranging between 0ºC (32ºF) and 9ºC (48ºF) on average.

Explore more of United States

  • Seattle is just one of the many cities in United States waiting to be explored after you've experienced Portland. Around 241 kilometres away to the north, popular attractions include Greyhound: Bus Station, LMN Architects and Boeing Radiation Effects Lab.

  • If you're looking to explore another major stop in United States, head for Spokane, about 467 kilometres north-east of Portland. Manito Park, Northwest Museum of Arts & Culture and Spokane Falls are key highlights.

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