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

RAP — PWM
Jan 14 — Jan 211
Wed 1/14
Wed 1/21
1 adult, Economy
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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 (PWM). 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 December 15, 2025.

Most accurate provider

Expedia
2 stars

Most trusted provider

Expedia
3 stars

Popular in

March

Cheapest in

February

Average price

$609
Provider with most accurate pricing for Rapid City-Portland flight deals.
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Provider most trusted by Cheapflights users for Rapid City-Portland flights.
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High demand for flights, 5% potential price rise
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Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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  • Most accurate provider: When it comes to deals on Rapid City-Portland, Maine flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on Rapid City-Portland, Maine flight deals on Cheapflights vs. Expedia 90-95% of the time. Price accuracy is based on data collected from Rapid City-Portland, Maine flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Rapid City-Portland, Maine flights, Cheapflights users trust Expedia the most. Expedia 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, Maine 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, Maine?

Currently, February is the cheapest month in which you can book a flight from Rapid City to Portland, Maine (average of $288). Flying from Rapid City to Portland, Maine in January is currently the most expensive (average of $696). 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.

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 December 15, 2025.
Peruse reviews from past customers who have flown with United Airlines from Rapid City to Portland to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,092 reviews

Boarding

7.7

Food

6.6

Comfort

7.3

Overall

7.4

Entertainment

7.1

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
United Airlines
7.4
Good
9,092 reviews
United Airlines
7.4
Good
9,092 reviews

Boarding

7.7

Food

6.6

Comfort

7.3

Overall

7.4

Entertainment

7.1

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.

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.

  • What is the cheapest airline to fly from Rapid City to Portland, Maine round-trip?

    Our cheapest airline available from Rapid City to Portland, Maine is United Airlines. Our recent data shows that you can find tickets from as low as $220 on this airline.

  • 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, Maine?

    Currently, February is the cheapest month in which you can book a flight from Rapid City to Portland, Maine (average of $288). Flying from Rapid City to Portland, Maine in January is currently the most expensive (average of $696). 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
North Conway
Brunswick
Auburn
Conway

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Alternative routes for Rapid City to Portland

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Rapid City to Portland

Discover the top airline 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 December 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$443Average$569FlexibilityNo cancel feeOn-time69%

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