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Rapid City

$339+ Cheap flights from Portland, ME to Rapid City (PWM - RAP)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/11. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — RAP
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
1 adult, Economy
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Cheap flight deals from Portland to Rapid City

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PWM) to Rapid City (RAP). 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 October 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$339
(United Airlines)

Popular in

July

Cheapest in

January

Average price

$660
Provider with most accurate pricing for Portland-Rapid City flight deals.
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Provider most trusted by Cheapflights users for Portland-Rapid City flights.
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From Portland to Rapid City
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Highest demand for flights based on searches. 11% potential increase in price ($79 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($27 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Portland to Rapid City

Cheapest flights from Portland to Rapid City
Explore the most affordable flight options available from Portland to Rapid City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 29, 2025.

This United Airlines deal was found by Cheapflights users on 10/27. 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 11/113:20 pmPWM - RAP
1 stop8h 39mUnited Airlines
Sat 11/151:30 pmRAP - PWM
1 stop6h 20mUnited Airlines
Deal found 10/27$339
This Delta deal was found by Cheapflights users on 10/27. 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 12/94:53 pmPWM - RAP
2 stops7h 53mDelta
Sat 12/1311:00 amRAP - PWM
2 stops21h 47mDelta
Deal found 10/27$382
This United Airlines deal was found by Cheapflights users on 10/27. 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.
Wed 11/53:20 pmPWM - RAP
1 stop8h 39mUnited Airlines
Mon 11/101:30 pmRAP - PWM
1 stop6h 20mUnited Airlines
Deal found 10/27$474
This United Airlines deal was found by Cheapflights users on 10/27. 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 12/96:00 amPWM - RAP
3 stops14h 54mUnited Airlines
Sat 12/138:30 amRAP - PWM
2 stops12h 42mUnited Airlines
Deal found 10/27$518

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated October 29, 2025.
Use the filters below to find and compare flights from Portland to Rapid City that are best for you.

Fly from

Portland

Fly to

Rapid City

Route

Depart

Return

Price

PortlandRapid City

PWM - RAP

PWMRAP

Portland

Tue 11/11

3:20 pm-9:59 pm

1 stop8h 39m

Rapid City

Sat 11/15

1:30 pm-9:50 pm

1 stop6h 20m

$339

PortlandRapid City

PWM - RAP

PWMRAP

Portland

Tue 12/9

6:08 am-2:09 pm

2 stops10h 01m

Rapid City

Sat 12/13

11:00 am-10:47 am

2 stops21h 47m

$382

PortlandRapid City

PWM - RAP

PWMRAP

Portland

Tue 12/9

6:00 am-6:54 pm

3 stops14h 54m

Rapid City

Sat 12/13

8:30 am-11:12 pm

2 stops12h 42m

$518

PortlandRapid City

PWM - RAP

PWMRAP

Portland

Tue 11/11

7:02 am-9:16 pm

3 stops16h 14m

Rapid City

Sat 11/15

5:18 am-9:47 pm

2 stops14h 29m

$663

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

Compare providers for flights from Portland to Rapid City

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 Portland to Rapid City in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice 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 Portland, Maine-Rapid City flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Portland, Maine-Rapid City flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Portland, Maine-Rapid City flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Portland, Maine-Rapid City flights, Cheapflights users trust eDreams the most. eDreams 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 Portland, Maine-Rapid City 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 Portland to Rapid City

Have a flexible travel schedule? Discover the best time to fly to Rapid City from Portland 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 Portland to Rapid City

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

Currently, November is the cheapest month in which you can book a flight from Portland, Maine to Rapid City (average of $288). Flying from Portland, Maine to Rapid City in February is currently the most expensive (average of $713). 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 Portland, Maine to Rapid City?

Reviews of airlines servicing Rapid City

Get insights into the airlines that provide service to Rapid City. 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 Rapid City. Reviews last updated October 29, 2025.
See what other customers who have flown with United Airlines and American Airlines from Portland to Rapid City have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,999 reviews

Boarding

7.7

Overall

7.4

Food

6.6

Comfort

7.3

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
United Airlines
7.4
Good
8,999 reviews
United Airlines
7.4
Good
8,999 reviews

Boarding

7.7

Overall

7.4

Food

6.6

Comfort

7.3

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
American Airlines
7.2
Good
11,032 reviews
United Airlines
7.4
Good
8,999 reviews

Boarding

7.7

Overall

7.4

Food

6.6

Comfort

7.3

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

Related info for your journey

Find useful and relevant information for your journey from Portland to Rapid City. 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 Portland, Maine to Rapid City?

    For as low as $339, United Airlines can have you in Rapid City from Portland, Maine in 8h 39m. Airlines will cover a distance of 1620 mi. This flight may include one or multiple stops.

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

    American Airlines, at $313, was found to be the cheapest airline from Portland, Maine to Rapid City. An alternate airline flying to your destination would be United Airlines. American Airlines is 48% cheaper than the average price of flights available within the next 90 days to this destination.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Portland to Rapid City 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 Portland, Maine to Rapid City?

    Currently, November is the cheapest month in which you can book a flight from Portland, Maine to Rapid City (average of $288). Flying from Portland, Maine to Rapid City in February is currently the most expensive (average of $713). 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 Rapid City?

Book flights to Rapid City if you plan to visit one of these locations
Deadwood
Keystone
Sturgis
Spearfish

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Alternative routes for Portland to Rapid City

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Top 2 airlines flying from Portland to Rapid City

Discover the top 2 airlines that operate flights from Portland to Rapid City. 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 October 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$313Average$602FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$350Average$628FlexibilityNo cancel feeOn-time69%

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