HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Portland

$270+ Cheap flights from Rapid City to Portland (RAP - PDX)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/26. Fares are subject to change and may not be available on all flights or dates of travel.
RAP — PDX
Jun 25 — Jul 21
Thu 6/25
Thu 7/2
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Rapid City to Portland with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Rapid City to Portland

Cheapest flights from Rapid City to Portland
Explore the most affordable flight options available from Rapid City to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 26, 2026.

This United Airlines deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/285:00 am
RAP
-
PDX
1 stop5h 47m
United Airlines
Tue 8/45:00 am
PDX
-
RAP
1 stop6h 29m
United Airlines
Deal found 5/22$338
This United Airlines deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/55:00 am
RAP
-
PDX
1 stop5h 47m
United Airlines
Mon 6/84:15 pm
PDX
-
RAP
1 stop5h 10m
United Airlines
Deal found 5/22$369
This American Airlines deal was found by Cheapflights users on 5/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/235:00 pm
RAP
-
PDX
1 stop8h 50m
American Airlines
Tue 7/75:20 am
PDX
-
RAP
1 stop5h 50m
American Airlines
Deal found 5/26$380
This American Airlines deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/154:55 pm
RAP
-
PDX
1 stop9h 00m
American Airlines
Wed 7/225:20 am
PDX
-
RAP
1 stop5h 50m
American Airlines
Deal found 5/25$401
This Delta deal was found by Cheapflights users on 5/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/32:32 pm
RAP
-
PDX
1 stop6h 45m
Delta
Mon 9/73:00 pm
PDX
-
RAP
1 stop6h 37m
Delta
Deal found 5/24$403
This United Airlines deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2811:22 am
RAP
-
PDX
1 stop7h 28m
United Airlines
Wed 9/24:07 pm
PDX
-
RAP
1 stop5h 21m
United Airlines
Deal found 5/25$418
This Kiwi.com deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/153:36 pm
RAP
-
PDX
1 stop27h 12m
Multiple Airlines
Wed 7/225:21 pm
PDX
-
RAP
2 stops26h 39m
Multiple Airlines
Deal found 5/25$427
This American Airlines deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/195:00 pm
RAP
-
PDX
1 stop8h 50m
American Airlines
Fri 6/265:06 am
PDX
-
RAP
1 stop6h 05m
American Airlines
Deal found 5/22$428
This Delta deal was found by Cheapflights users on 5/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/164:00 pm
RAP
-
PDX
1 stop8h 47m
Delta
Sun 10/1811:10 am
PDX
-
RAP
2 stops10h 29m
Delta
Deal found 5/22$437
This United Airlines deal was found by Cheapflights users on 5/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/207:05 am
RAP
-
PDX
1 stop7h 01m
United Airlines
Sat 6/275:00 am
PDX
-
RAP
1 stop6h 29m
United Airlines
Deal found 5/23$438
This Delta deal was found by Cheapflights users on 5/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/2611:13 am
RAP
-
PDX
1 stop7h 02m
Delta
Tue 6/21:35 pm
PDX
-
RAP
1 stop7h 49m
Delta
Deal found 5/26$441

Find flight deals from Rapid City to Portland

Discover tips and strategies to find the most affordable flight options for your journey from Rapid City (RAP) to Portland (PDX). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$338
(United Airlines)

One-way from

$270
(Kiwi.com)

Popular in

September

Cheapest in

January

Average price

$405
Provider with most accurate pricing for Rapid City-Portland flight deals.
Search Deals
Provider most trusted by Cheapflights users for Rapid City-Portland flights.
Search Deals
From Rapid City to Portland
Search Deals
One-way flight from Rapid City to Portland
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($49 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Rapid City to Portland that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 26, 2026.
Use the filters below to find and compare flights from Rapid City to Portland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

Rapid CityPortland

RAP - PDX

RAPPDX

Rapid City

Fri 6/5

5:00 am-9:47 am

1 stop5h 47m

Portland

Mon 6/8

4:15 pm-10:25 pm

1 stop5h 10m

$369

Rapid CityPortland

RAP - PDX

RAPPDX

Rapid City

Thu 9/3

2:32 pm-8:17 pm

1 stop6h 45m

Portland

Mon 9/7

3:00 pm-10:37 pm

1 stop6h 37m

$403

Rapid CityPortland

RAP - PDX

RAPPDX

Rapid City

Wed 7/15

3:36 pm-5:48 pm

1 stop27h 12m

Portland

Wed 7/22

5:21 pm-9:00 pm

2 stops26h 39m

$427

Rapid CityPortland

RAP - PDX

RAPPDX

Rapid City

Fri 10/16

4:00 pm-11:47 pm

1 stop8h 47m

Portland

Sun 10/18

11:10 am-10:39 pm

2 stops10h 29m

$437

Rapid CityPortland

RAP - PDX

RAPPDX

Rapid City

Sat 6/20

7:05 am-1:06 pm

1 stop7h 01m

Portland

Sat 6/27

5:00 am-12:29 pm

1 stop6h 29m

$438

Rapid CityPortland

RAP - PDX

RAPPDX

Rapid City

Thu 6/11

3:19 pm-11:47 pm

1 stop9h 28m

Portland

Tue 6/16

5:06 am-12:11 pm

1 stop6h 05m

$460

Rapid CityPortland

RAP - PDX

RAPPDX

Rapid City

Sat 7/18

11:44 am-4:38 pm

1 stop5h 54m

Portland

Wed 7/22

5:20 am-12:10 pm

1 stop5h 50m

$461

Rapid CityPortland

RAP - PDX

RAPPDX

Rapid City

Fri 8/28

10:26 am-3:05 pm

1 stop5h 39m

Portland

Wed 9/2

11:15 am-10:28 pm

2 stops10h 13m

$508

Rapid CityPortland

RAP - PDX

RAPPDX

Rapid City

Mon 9/7

5:07 pm-11:09 pm

1 stop7h 02m

Portland

Sun 9/13

5:10 am-12:06 pm

1 stop5h 56m

$579

Rapid CityPortland

RAP - PDX

RAPPDX

Rapid City

Sat 7/18

7:00 am-10:48 pm

2 stops16h 48m

Portland

Wed 7/22

5:00 am-12:29 pm

1 stop6h 29m

$603

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/23

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

Compare providers for flights from Rapid City to Portland

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Rapid City to Portland in May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Rapid City-Portland flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Rapid City-Portland flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Rapid City-Portland flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Rapid City-Portland flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Rapid City-Portland flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Rapid City to Portland

Have a flexible travel schedule? Discover the best time to fly to Portland from Rapid City with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Rapid City to Portland

What is the cheapest month to book a flight from Rapid City to Portland?

Currently, January is the cheapest month in which you can book a flight from Rapid City to Portland (average of $328). Flying from Rapid City to Portland in September is currently the most expensive (average of $532). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from Rapid City to Portland?

Reviews of airlines servicing Portland

Get insights into the airlines that provide service to Portland. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Portland. Reviews last updated May 26, 2026.
Read reviews from past customers who have flown Delta and United Airlines from Rapid City to Portland. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,425 reviews

Overall

7.9

Entertainment

7.8

Comfort

7.8

Food

7.2

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Delta
7.9
Good
8,425 reviews
Delta
7.9
Good
8,425 reviews

Overall

7.9

Entertainment

7.8

Comfort

7.8

Food

7.2

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
United Airlines
7.4
Good
9,749 reviews
Delta
7.9
Good
8,425 reviews

Overall

7.9

Entertainment

7.8

Comfort

7.8

Food

7.2

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

Related info for your journey

Find useful and relevant information for your journey from Rapid City to Portland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Rapid City to Portland?

    Airlines like United Airlines and Delta fly from Rapid City to Portland in about 5h 47m. The time it takes to get you to your destination can typically vary by up to 58m. There are 960 mi between Rapid City and Portland. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Rapid City to Portland round-trip?

    Currently priced at $258, Delta will fly you from Rapid City to Portland and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on United Airlines for as low as $298. Users have found that Delta is 38% cheaper than the other options available to this destination.

  • Can I find deals for flights from Rapid City to Portland that include hotel bookings?

    Yes. In addition to deals on Rapid City to Portland flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Rapid City to Portland?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Rapid City to Portland.

  • Can I find deals for business class flights from Rapid City to Portland?

    Yes. Cheapflights offers flight deals from Rapid City to Portland by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Rapid City to Portland?

    Currently, January is the cheapest month in which you can book a flight from Rapid City to Portland (average of $328). Flying from Rapid City to Portland in September is currently the most expensive (average of $532). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
Beaverton
Seaside
Vancouver
Lincoln City
Longview
Lake Oswego
Hillsboro
Clackamas
Troutdale
Cannon Beach
Long Beach
McMinnville
Tigard
The Dalles
Wilsonville
Depoe Bay
Stevenson
Tillamook
Astoria
Gresham

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Rapid City to Portland

See prices for flight routes from nearby airports that may be better suited for you.
Sioux Falls to Boise flights
Sioux Falls to Portland flights
Sioux Falls to Eugene flights
Rapid City to Redmond flights
Rapid City to Boise flights

Top 2 airlines flying from Rapid City to Portland

Discover the top 2 airlines that operate flights from Rapid City to Portland. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$258Average$328FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$298Average$459FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.