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Cheap flights from Portland to Rapid City from $156

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to Rapid City departing on 10/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Portland to Rapid City

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
4:02 pm - 9:59 pmPDX-RAP
4h 57m1 stop
United Airlines Logo
5:15 am - 9:38 amRAP-PDX
5h 23m1 stop
$259United Airlines
Find Deal
Wed, Oct 29 - Wed, Nov 12
United Airlines Logo
12:55 pm - 6:43 pmPDX-RAP
4h 48m1 stop
United Airlines Logo
8:45 am - 6:36 pmRAP-PDX
10h 51m2 stops
$264United Airlines
Find Deal
Wed, Oct 29 - Wed, Nov 12
Delta Logo
12:40 am - 9:53 amPDX-RAP
8h 13m1 stop
Delta Logo
10:33 am - 5:27 pmRAP-PDX
7h 54m1 stop
$274Delta
Find Deal
Fri, Oct 24 - Wed, Oct 29
Delta Logo
12:55 am - 10:05 amPDX-RAP
8h 10m1 stop
Delta Logo
10:40 am - 4:51 pmRAP-PDX
7h 11m1 stop
$279Delta
Find Deal
Fri, Mar 6 - Wed, Mar 11
United Airlines Logo
5:00 am - 10:57 amPDX-RAP
4h 57m1 stop
United Airlines Logo
6:00 pm - 10:56 pmRAP-PDX
5h 56m1 stop
$289United Airlines
Find Deal
Fri, Oct 24 - Mon, Oct 27
Delta Logo
12:40 am - 9:53 amPDX-RAP
8h 13m1 stop
Delta Logo
10:33 am - 5:27 pmRAP-PDX
7h 54m1 stop
$294Delta
Find Deal
Fri, Oct 24 - Wed, Oct 29
United Airlines Logo
4:02 pm - 9:59 pmPDX-RAP
4h 57m1 stop
United Airlines Logo
5:15 am - 9:38 amRAP-PDX
5h 23m1 stop
$298United Airlines
Find Deal
Fri, Nov 21 - Fri, Dec 5
Multiple Airlines Logo
10:07 pm - 6:50 pmPDX-RAP
19h 43m1 stop
Multiple Airlines Logo
3:39 pm - 11:56 amRAP-PDX
21h 17m2 stops
$338Multiple Airlines
Find Deal
Fri, Oct 24 - Mon, Oct 27
American Airlines Logo
5:34 am - 3:58 pmPDX-RAP
9h 24m1 stop
American Airlines Logo
5:18 am - 12:57 pmRAP-PDX
8h 39m1 stop
$399American Airlines
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Thu, Oct 30 - Sun, Nov 2
Multiple Airlines Logo
12:43 pm - 5:08 pmPDX-RAP
27h 25m2 stops
Multiple Airlines Logo
5:58 pm - 6:40 pmRAP-PDX
25h 42m1 stop
$408Multiple Airlines
Find Deal
Wed, Oct 22 - Sun, Oct 26

Delta flights from Portland to Rapid City

Our best Delta deals on Portland to Rapid City flight tickets
Delta
Oct 24
PDX12:40 amPortland
8h 13m
1 stop
RAP9:53 amRapid City
Oct 29
RAP10:33 amRapid City
7h 54m
1 stop
PDX5:27 pmPortland
$274
Find similar
Delta
Mar 6
PDX12:55 amPortland
8h 10m
1 stop
RAP10:05 amRapid City
Mar 11
RAP10:40 amRapid City
7h 11m
1 stop
PDX4:51 pmPortland
$279
Find similar
Delta
Oct 24
PDX12:40 amPortland
8h 13m
1 stop
RAP9:53 amRapid City
Oct 29
RAP10:33 amRapid City
7h 54m
1 stop
PDX5:27 pmPortland
$294
Find similar

United Airlines flights from Portland to Rapid City

Our best United Airlines deals on Portland to Rapid City flight tickets
United Airlines
Oct 29
PDX4:02 pmPortland
4h 57m
1 stop
RAP9:59 pmRapid City
Nov 12
RAP5:15 amRapid City
5h 23m
1 stop
PDX9:38 amPortland
$259
Find similar
United Airlines
Oct 29
PDX12:55 pmPortland
4h 48m
1 stop
RAP6:43 pmRapid City
Nov 12
RAP8:45 amRapid City
10h 51m
2 stops
PDX6:36 pmPortland
$264
Find similar
United Airlines
Oct 24
PDX5:00 amPortland
4h 57m
1 stop
RAP10:57 amRapid City
Oct 27
RAP6:00 pmRapid City
5h 56m
1 stop
PDX10:56 pmPortland
$289
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Portland to Rapid City 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 October 9, 2025.
Use the filters below to find and compare flights from Portland to Rapid City that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PortlandRapid City

PDX - RAP

PDXRAP

Portland

Wed 10/29

4:02 pm-9:59 pm

1 stop4h 57m

Rapid City

Wed 11/12

5:15 am-9:38 am

1 stop5h 23m

$259

PortlandRapid City

PDX - RAP

PDXRAP

Portland

Wed 10/29

12:55 pm-6:43 pm

1 stop4h 48m

Rapid City

Wed 11/12

8:45 am-6:36 pm

2 stops10h 51m

$264

PortlandRapid City

PDX - RAP

PDXRAP

Portland

Fri 10/24

12:40 am-9:53 am

1 stop8h 13m

Rapid City

Wed 10/29

10:33 am-5:27 pm

1 stop7h 54m

$274

PortlandRapid City

PDX - RAP

PDXRAP

Portland

Fri 3/6

12:55 am-10:05 am

1 stop8h 10m

Rapid City

Wed 3/11

10:40 am-4:51 pm

1 stop7h 11m

$279

PortlandRapid City

PDX - RAP

PDXRAP

Portland

Fri 10/24

5:00 am-10:57 am

1 stop4h 57m

Rapid City

Mon 10/27

6:00 pm-10:56 pm

1 stop5h 56m

$289

PortlandRapid City

PDX - RAP

PDXRAP

Portland

Fri 10/24

12:40 am-9:53 am

1 stop8h 13m

Rapid City

Wed 10/29

10:33 am-5:27 pm

1 stop7h 54m

$294

PortlandRapid City

PDX - RAP

PDXRAP

Portland

Fri 11/21

4:02 pm-9:59 pm

1 stop4h 57m

Rapid City

Fri 12/5

5:15 am-9:38 am

1 stop5h 23m

$298

PortlandRapid City

PDX - RAP

PDXRAP

Portland

Fri 10/24

10:07 pm-6:50 pm

1 stop19h 43m

Rapid City

Mon 10/27

3:39 pm-11:56 am

2 stops21h 17m

$338

PortlandRapid City

PDX - RAP

PDXRAP

Portland

Thu 10/30

5:34 am-3:58 pm

1 stop9h 24m

Rapid City

Sun 11/2

5:18 am-12:57 pm

1 stop8h 39m

$399

PortlandRapid City

PDX - RAP

PDXRAP

Portland

Wed 10/22

12:43 pm-5:08 pm

2 stops27h 25m

Rapid City

Sun 10/26

5:58 pm-6:40 pm

1 stop25h 42m

$408

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted by cheapest first
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See travel insights to Rapid City from

How to get the cheapest flight ticket from Portland to Rapid City

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 Portland and Rapid City?

What is the cheapest month to fly to Rapid City?

The month of April is, on average, the cheapest month to fly to Rapid City from Portland, with most prices found around $343. If you aren’t able to travel to Rapid City during the month of April, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $349.

What is the cheapest day to depart on your flight to Rapid City?

According to our data, Thursday is the cheapest day to fly to Rapid City from Portland. The lowest ticket price found for a Thursday departure recently was $411. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Rapid City is Monday, with ticket prices averaging around $604.

What is the cheapest time of day to depart on your flight to Rapid City?

Our most recent data shows that the best time of day to fly to Rapid City is in the evening. Flights from Portland to Rapid City during this time can be as low as $359. Flights in the morning are often more expensive with an average ticket price of $498.

Can stopping save me money on Portland to Rapid City flights?

You could potentially save up to 22% on your flight if you consider stops on a Portland to Rapid City flight.

How have Portland to Rapid City flight prices changed over time?

When to book flights from Portland to Rapid City

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

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

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

Direct flights

None
There are no direct flights from Portland to Rapid City. There are no popular flight routes from Portland to Rapid City.
Search flight deals

  • How far is Portland to Rapid City by plane?

    The straight-line distance from Portland to Rapid City is 955.5 mi. Typically, this will take 4h 48m by plane in normal conditions.

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

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

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Portland Airport to Rapid City Airport.

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

    The required travel and health documents for your Rapid City 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 Rapid City 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 Portland to Rapid City?

Best airlines flying from Portland to Rapid City

Compare and see reviews for airlines that fly from Portland to Rapid City with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $258Free CancellationRating
7.9
7,969 reviews
Search Delta flights
United AirlinesPriceFrom $296Free CancellationRating
7.4
8,968 reviews
Search United Airlines flights

Traveling to a place near Rapid City?

Book flights to Rapid City if you plan to visit one of these locations
Deadwood
Keystone
Sturgis
Spearfish
Custer
Wall
Hill City
Hot Springs

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Portland to Rapid City. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo enables you to select and highlight flights to Rapid City from Portland with this policy.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Portland to Rapid City.

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

If you are not ready to book a flight from Portland to Rapid City now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Rapid City and let you know when they change.

An easier way to manage your Rapid City trip

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