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Cheap flights from Rapid City to Portland from $139

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Rapid City to Portland departing on 8/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Rapid City to Portland

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
4:55 pm - 12:55 am
RAP
-
PDX
9h 00m
1 stop
American Airlines Logo
5:15 am - 12:08 pm
PDX
-
RAP
5h 53m
1 stop
$319American Airlines
Mon, Aug 3 - Sat, Aug 8
United Airlines Logo
7:00 am - 1:13 pm
RAP
-
PDX
7h 13m
1 stop
United Airlines Logo
4:15 pm - 10:33 pm
PDX
-
RAP
5h 18m
1 stop
$344United Airlines
Fri, Jul 3 - Sat, Jul 11
Delta Logo
4:28 pm - 11:18 pm
RAP
-
PDX
7h 50m
1 stop
Delta Logo
3:00 pm - 10:26 pm
PDX
-
RAP
6h 26m
1 stop
$369Delta
Fri, Jul 3 - Thu, Jul 9
Multiple Airlines Logo
9:50 pm - 4:54 pm
RAP
-
PDX
20h 04m
1 stop
Multiple Airlines Logo
6:38 pm - 9:08 pm
PDX
-
RAP
25h 30m
1 stop
$372Multiple Airlines
Thu, Jul 16 - Thu, Jul 23
American Airlines Logo
4:55 pm - 12:55 am
RAP
-
PDX
9h 00m
1 stop
American Airlines Logo
5:20 am - 12:10 pm
PDX
-
RAP
5h 50m
1 stop
$379American Airlines
Wed, Jul 22 - Mon, Jul 27
Delta Logo
2:59 pm - 8:17 pm
RAP
-
PDX
6h 18m
1 stop
Delta Logo
3:00 pm - 10:26 pm
PDX
-
RAP
6h 26m
1 stop
$380Delta
Wed, Jul 1 - Fri, Jul 10
Delta Logo
4:28 pm - 11:18 pm
RAP
-
PDX
7h 50m
1 stop
Delta Logo
3:00 pm - 10:26 pm
PDX
-
RAP
6h 26m
1 stop
$389Delta
Thu, Jul 2 - Fri, Jul 10
United Airlines Logo
5:00 am - 9:32 am
RAP
-
PDX
5h 32m
1 stop
United Airlines Logo
5:00 am - 12:24 pm
PDX
-
RAP
6h 24m
1 stop
$399United Airlines
Sat, Aug 29 - Tue, Sep 1
American Airlines Logo
4:55 pm - 12:55 am
RAP
-
PDX
9h 00m
1 stop
American Airlines Logo
12:45 am - 9:47 am
PDX
-
RAP
8h 02m
1 stop
$402American Airlines
Wed, Jul 22 - Sun, Jul 26
United Airlines Logo
5:00 am - 9:32 am
RAP
-
PDX
5h 32m
1 stop
United Airlines Logo
7:00 am - 5:53 pm
PDX
-
RAP
9h 53m
2 stops
$404United Airlines
Sat, Aug 29 - Tue, Sep 1

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United Airlines flights from Rapid City to Portland

Our best United Airlines deals on Rapid City to Portland flight tickets
United Airlines
Jul 3
RAP7:00 amRapid City
7h 13m
1 stop
PDX1:13 pmPortland
Jul 11
PDX4:15 pmPortland
5h 18m
1 stop
RAP10:33 pmRapid City
$344
United Airlines
Aug 29
RAP5:00 amRapid City
5h 32m
1 stop
PDX9:32 amPortland
Sep 1
PDX5:00 amPortland
6h 24m
1 stop
RAP12:24 pmRapid City
$399
United Airlines
Aug 29
RAP5:00 amRapid City
5h 32m
1 stop
PDX9:32 amPortland
Sep 1
PDX7:00 amPortland
9h 53m
2 stops
RAP5:53 pmRapid City
$404

American Airlines flights from Rapid City to Portland

Our best American Airlines deals on Rapid City to Portland flight tickets
American Airlines
Aug 3
RAP4:55 pmRapid City
9h 00m
1 stop
PDX12:55 amPortland
Aug 8
PDX5:15 amPortland
5h 53m
1 stop
RAP12:08 pmRapid City
$319
American Airlines
Jul 22
RAP4:55 pmRapid City
9h 00m
1 stop
PDX12:55 amPortland
Jul 27
PDX5:20 amPortland
5h 50m
1 stop
RAP12:10 pmRapid City
$379
American Airlines
Jul 22
RAP4:55 pmRapid City
9h 00m
1 stop
PDX12:55 amPortland
Jul 26
PDX12:45 amPortland
8h 02m
1 stop
RAP9:47 amRapid City
$402

momondo 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, momondo users made 832,500 searches. Data last updated June 21, 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

Rapid CityPortland

RAP - PDX

RAPPDX

Rapid City

Mon 8/3

4:55 pm-12:55 am

1 stop9h 00m

Portland

Sat 8/8

5:15 am-12:08 pm

1 stop5h 53m

$319

Rapid CityPortland

RAP - PDX

RAPPDX

Rapid City

Fri 7/3

7:00 am-1:13 pm

1 stop7h 13m

Portland

Sat 7/11

4:15 pm-10:33 pm

1 stop5h 18m

$344

Rapid CityPortland

RAP - PDX

RAPPDX

Rapid City

Fri 7/3

4:28 pm-11:18 pm

1 stop7h 50m

Portland

Thu 7/9

3:00 pm-10:26 pm

1 stop6h 26m

$369

Rapid CityPortland

RAP - PDX

RAPPDX

Rapid City

Thu 7/16

9:50 pm-4:54 pm

1 stop20h 04m

Portland

Thu 7/23

6:38 pm-9:08 pm

1 stop25h 30m

$372

Rapid CityPortland

RAP - PDX

RAPPDX

Rapid City

Wed 7/22

4:55 pm-12:55 am

1 stop9h 00m

Portland

Mon 7/27

5:20 am-12:10 pm

1 stop5h 50m

$379

Rapid CityPortland

RAP - PDX

RAPPDX

Rapid City

Wed 7/1

2:59 pm-8:17 pm

1 stop6h 18m

Portland

Fri 7/10

3:00 pm-10:26 pm

1 stop6h 26m

$380

Rapid CityPortland

RAP - PDX

RAPPDX

Rapid City

Thu 7/2

4:28 pm-11:18 pm

1 stop7h 50m

Portland

Fri 7/10

3:00 pm-10:26 pm

1 stop6h 26m

$389
Quickest round-trip

Rapid CityPortland

RAP - PDX

RAPPDX

Rapid City

Sat 8/29

5:00 am-9:32 am

1 stop5h 32m

Portland

Tue 9/1

5:00 am-12:24 pm

1 stop6h 24m

$399

Rapid CityPortland

RAP - PDX

RAPPDX

Rapid City

Wed 7/22

4:55 pm-12:55 am

1 stop9h 00m

Portland

Sun 7/26

12:45 am-9:47 am

1 stop8h 02m

$402

Rapid CityPortland

RAP - PDX

RAPPDX

Rapid City

Sat 8/29

5:00 am-9:32 am

1 stop5h 32m

Portland

Tue 9/1

7:00 am-5:53 pm

2 stops9h 53m

$404

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Rapid City to Portland

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Rapid City and Portland?

What is the cheapest month to fly to Portland?

The cheapest month to fly to Portland from Rapid City is in January. Flight prices, which tend to average around $328, are often lower during this time because this is during the off-season. If you don’t want to visit Portland in January, then you should wait until July to fly from Rapid City, when ticket prices are also cheap, with an average price of $330.

When to book flights from Rapid City to Portland

Are you open to changing your travel dates? Check out the ideal times to fly from Rapid City to Portland according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Rapid City to Portland (RAP to PDX) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Rapid City to Portland

Fastest flight time

5h 32m

Direct flights

None
The fastest flight from Rapid City to Portland takes 5h 32m
There are no direct flights from Rapid City to Portland. There are no popular flight routes from Rapid City to Portland.
Search flight deals

Frequently asked questions about flying from Rapid City to Portland

  • How far is Rapid City to Portland by plane?

    The distance between Rapid City and Portland is about 955.5 mi. 5h 32m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Rapid City Airport to Portland Airport?

    Prices for flights from Rapid City Airport to Portland Airport were last updated today.

  • How many operators does momondo search for flights from Rapid City Airport to Portland Airport?

  • How old do you have to be to fly from Rapid City Airport to Portland Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Rapid City Airport to Portland Airport.

  • What documentation or ID do you need to fly to Portland Airport?

    The required travel and health documents for your Portland Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Portland Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Rapid City to Portland?

Best airlines flying from Rapid City to Portland

Compare and see reviews for airlines that fly from Rapid City to Portland with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $258Free CancellationRating
7.8
8,423 reviews
Search Delta flights
United AirlinesPriceFrom $298Free CancellationRating
7.4
9,868 reviews
Search United Airlines flights

Traveling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
Lincoln City
Seaside
Cannon Beach
Vancouver
Salem
Astoria
Long Beach
Rockaway Beach
Beaverton
Depoe Bay
Hillsboro
Tigard
Longview
Hood River
Newberg
Troutdale
Clackamas
The Dalles
Gresham
McMinnville

Why use momondo?

Why should I use momondo to find a flight deal from Rapid City to Portland?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Rapid City to Portland. momondo saves you time and could save you money on your trip.

Can I find flights from Rapid City to Portland with flexible booking policies on momondo?

momondo does allow users to show only those flights to Portland from Rapid City which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Rapid City to Portland?

Once all potential Rapid City to Portland flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Rapid City to Portland right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Rapid City to Portland flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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