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Cheap flights from Rapid City to Portland from $165

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 9/20. 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
4:56 pm - 11:23 pmRAP  Rapid City-PDX Portland
7h 27m1 stop Dallas/Fort Worth
American Airlines Logo
5:10 am - 12:06 pmPDX  Portland-RAP Rapid City
5h 56m1 stop Phoenix Sky Harbor Intl
$329American Airlines
Thu, Sep 10 - Sun, Sep 13
American Airlines Logo
4:56 pm - 11:23 pmRAP  Rapid City-PDX Portland
7h 27m1 stop Dallas/Fort Worth
American Airlines Logo
5:10 am - 12:06 pmPDX  Portland-RAP Rapid City
5h 56m1 stop Phoenix Sky Harbor Intl
$329American Airlines
Wed, Sep 9 - Sun, Sep 13
United Airlines Logo
8:40 am - 3:05 pmRAP  Rapid City-PDX Portland
7h 25m1 stop Denver Intl
United Airlines Logo
5:00 am - 11:55 amPDX  Portland-RAP Rapid City
5h 55m1 stop Denver Intl
$362United Airlines
Wed, Sep 9 - Sat, Sep 12
United Airlines Logo
5:50 pm - 11:09 pmRAP  Rapid City-PDX Portland
6h 19m1 stop Denver Intl
United Airlines Logo
4:05 pm - 10:08 pmPDX  Portland-RAP Rapid City
5h 03m1 stop Denver Intl
$364United Airlines
Fri, Nov 27 - Fri, Dec 4
United Airlines Logo
5:00 am - 9:33 amRAP  Rapid City-PDX Portland
5h 33m1 stop Denver Intl
United Airlines Logo
5:00 am - 11:55 amPDX  Portland-RAP Rapid City
5h 55m1 stop Denver Intl
$380United Airlines
Sun, Sep 6 - Sun, Sep 13
American Airlines Logo
11:45 am - 10:06 pmRAP  Rapid City-PDX Portland
11h 21m2 stops Phoenix Sky Harbor Intl Los Angeles
American Airlines Logo
5:10 am - 12:06 pmPDX  Portland-RAP Rapid City
5h 56m1 stop Phoenix Sky Harbor Intl
$457American Airlines
Wed, Sep 9 - Sun, Sep 13
American Airlines Logo
12:39 pm - 6:59 pmRAP  Rapid City-PDX Portland
7h 20m1 stop Dallas/Fort Worth
American Airlines Logo
5:15 am - 12:08 pmPDX  Portland-RAP Rapid City
5h 53m1 stop Phoenix Sky Harbor Intl
$463American Airlines
Fri, Aug 21 - Tue, Aug 25
Delta Logo
11:30 am - 6:43 pmRAP  Rapid City-PDX Portland
8h 13m2 stops Minneapolis St Paul Seattle/Tacoma Intl
Delta Logo
3:10 pm - 10:39 pmPDX  Portland-RAP Rapid City
6h 29m1 stop Minneapolis St Paul
$709Delta
Mon, Dec 28 - Mon, Jan 4
Delta Logo
6:48 am - 4:05 pmRAP  Rapid City-PDX Portland
10h 17m2 stops Minneapolis St Paul Salt Lake City
Delta Logo
8:44 pm - 10:01 amPDX  Portland-RAP Rapid City
12h 17m2 stops Seattle/Tacoma Intl Minneapolis St Paul
$949Delta
Wed, Sep 9 - Sun, Sep 13
Delta Logo
4:30 pm - 11:39 pmRAP  Rapid City-PDX Portland
8h 09m2 stops Minneapolis St Paul Salt Lake City
Delta Logo
8:44 pm - 10:01 amPDX  Portland-RAP Rapid City
12h 17m2 stops Seattle/Tacoma Intl Minneapolis St Paul
$1,117Delta
Mon, Sep 7 - Sun, Sep 13

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American Airlines flights from Rapid City to Portland

Our best American Airlines deals on Rapid City to Portland flight tickets
American Airlines
Oct 1
RAP11:45 amRapid City
6h 09m
1 stop
PDX4:54 pmPortland
Oct 4
PDX5:10 amPortland
5h 56m
1 stop
RAP12:06 pmRapid City
$329
American Airlines
Sep 9
RAP11:45 amRapid City
11h 21m
2 stops
PDX10:06 pmPortland
Sep 13
PDX5:10 amPortland
5h 56m
1 stop
RAP12:06 pmRapid City
$457
American Airlines
Aug 21
RAP11:45 amRapid City
6h 06m
1 stop
PDX4:51 pmPortland
Aug 25
PDX5:15 amPortland
5h 53m
1 stop
RAP12:08 pmRapid City
$463

United Airlines flights from Rapid City to Portland

Our best United Airlines deals on Rapid City to Portland flight tickets
United Airlines
Sep 9
RAP8:40 amRapid City
7h 25m
1 stop
PDX3:05 pmPortland
Sep 12
PDX5:00 amPortland
5h 55m
1 stop
RAP11:55 amRapid City
$362
United Airlines
Nov 27
RAP5:50 pmRapid City
6h 19m
1 stop
PDX11:09 pmPortland
Dec 4
PDX4:05 pmPortland
5h 03m
1 stop
RAP10:08 pmRapid City
$364
United Airlines
Sep 6
RAP5:00 amRapid City
5h 33m
1 stop
PDX9:33 amPortland
Sep 13
PDX5:00 amPortland
5h 55m
1 stop
RAP11:55 amRapid City
$380

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 August 11, 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 Rapid City - PDX Portland

RAPPDX

Rapid City

Thu 9/10

4:56 pm-11:23 pm

1 stop7h 27m

Portland

Sun 9/13

5:10 am-12:06 pm

1 stop5h 56m

$329

Rapid CityPortland

RAP Rapid City - PDX Portland

RAPPDX

Rapid City

Wed 9/9

4:56 pm-11:23 pm

1 stop7h 27m

Portland

Sun 9/13

5:10 am-12:06 pm

1 stop5h 56m

$329

Rapid CityPortland

RAP Rapid City - PDX Portland

RAPPDX

Rapid City

Wed 9/9

8:40 am-3:05 pm

1 stop7h 25m

Portland

Sat 9/12

5:00 am-11:55 am

1 stop5h 55m

$362
Quickest round-trip

Rapid CityPortland

RAP Rapid City - PDX Portland

RAPPDX

Rapid City

Fri 11/27

5:50 pm-11:09 pm

1 stop6h 19m

Portland

Fri 12/4

4:05 pm-10:08 pm

1 stop5h 03m

$364

Rapid CityPortland

RAP Rapid City - PDX Portland

RAPPDX

Rapid City

Sun 9/6

5:00 am-9:33 am

1 stop5h 33m

Portland

Sun 9/13

5:00 am-11:55 am

1 stop5h 55m

$380

Rapid CityPortland

RAP Rapid City - PDX Portland

RAPPDX

Rapid City

Wed 9/9

11:45 am-10:06 pm

2 stops11h 21m

Portland

Sun 9/13

5:10 am-12:06 pm

1 stop5h 56m

$457

Rapid CityPortland

RAP Rapid City - PDX Portland

RAPPDX

Rapid City

Fri 8/21

12:39 pm-6:59 pm

1 stop7h 20m

Portland

Tue 8/25

5:15 am-12:08 pm

1 stop5h 53m

$463

Rapid CityPortland

RAP Rapid City - PDX Portland

RAPPDX

Rapid City

Mon 12/28

11:30 am-6:43 pm

2 stops8h 13m

Portland

Mon 1/4

3:10 pm-10:39 pm

1 stop6h 29m

$709

Rapid CityPortland

RAP Rapid City - PDX Portland

RAPPDX

Rapid City

Wed 9/9

6:48 am-4:05 pm

2 stops10h 17m

Portland

Sun 9/13

8:44 pm-10:01 am

2 stops12h 17m

$949

Rapid CityPortland

RAP Rapid City - PDX Portland

RAPPDX

Rapid City

Mon 9/7

4:30 pm-11:39 pm

2 stops8h 09m

Portland

Sun 9/13

8:44 pm-10:01 am

2 stops12h 17m

$1,117

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?

Prices are currently typical for flights on this route.

Typical prices usually range from $318 to $459.
The lowest price recently found on this route was $329.

What is the cheapest month to fly to Portland?

The cheapest month to fly to Portland from Rapid City is in December. Flight prices, which tend to average around $273, are often lower during this time because this is during the off-season. If you don’t want to visit Portland in December, then you should wait until January to fly from Rapid City, when ticket prices are also cheap, with an average price of $328.

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 39m

Direct flights

None
The fastest flight from Rapid City to Portland takes 5h 39m
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 39m 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
8,505 reviews
Search Delta flights
United AirlinesPriceFrom $298Free CancellationRating
7.4
10,104 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
Vancouver
Cannon Beach
Salem
Astoria
Long Beach
Beaverton
Rockaway Beach
Hillsboro
Tigard
Depoe Bay
Longview
Hood River
Newberg
Clackamas
Troutdale
Gresham
Kelso
Wilsonville

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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