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South Dakota

$339+ Cheap flights from Portland, ME (PWM) to South Dakota

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 — FSD
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
1 adult, Economy
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Find flight deals from Portland to South Dakota

Cheapest flights from Portland to South Dakota
Explore the most affordable flight options available from Portland to South Dakota. 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

Cheap flight deals from Portland to South Dakota

Keep the following information in mind while searching for Portland to South Dakota flight deals. Data was last updated October 29, 2025.

Round-trip from

$339
(United Airlines)
From Portland to South Dakota
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland to South Dakota 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 South Dakota that are best for you.

Fly from

Portland

Fly to

South Dakota

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

Best time to book a flight from Portland to South Dakota

Have a flexible travel schedule? Discover the best time to fly to South Dakota 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 South Dakota

What is the cheapest month to book a flight from Portland, Maine to South Dakota?

Currently, March is the cheapest month in which you can book a flight from Portland, Maine to South Dakota (average of $146). Flying from Portland, Maine to South Dakota in May is currently the most expensive (average of $436). 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 South Dakota

Get insights into the airlines that provide service to South Dakota. 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 South Dakota. Reviews last updated October 29, 2025.
See what other customers who have flown with United Airlines and American Airlines from Portland to South Dakota have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,999 reviews

Crew

8.1

Entertainment

7.1

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

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

Crew

8.1

Entertainment

7.1

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

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

Crew

8.1

Entertainment

7.1

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

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 South Dakota. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Portland to South Dakota?

    If you book a flight to South Dakota from Portland, you will be flying from Portland, which is the city’s only airport. Portland (PWM) is located 2.9 mi from the center of Portland.

  • How long is the flight from Portland, Maine to South Dakota?

    Departing from Portland, Maine to South Dakota will take you 8h 39m. There are 1620 mi between Portland, Maine and South Dakota. This flight may include one or multiple stops.

  • Can I find deals for flights from Portland to South Dakota that include hotel bookings?

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

  • How can I find direct flights from Portland to South Dakota?

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

  • Can I find deals for business class flights from Portland to South Dakota?

    Yes. Cheapflights offers flight deals from Portland to South Dakota 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 South Dakota?

    Currently, March is the cheapest month in which you can book a flight from Portland, Maine to South Dakota (average of $146). Flying from Portland, Maine to South Dakota in May is currently the most expensive (average of $436). 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

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Top 2 airlines flying from Portland to South Dakota

Discover the top 2 airlines that operate flights from Portland to South Dakota. 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$349Average$668FlexibilityNo cancel feeOn-time69%

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