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South Dakota

$302+ Cheap flights from Portland, ME (PWM) to South Dakota

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/21. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — FSD
Sep 9 — Sep 161
Wed 9/9
Wed 9/16
1 adult, Economy
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Cheap 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 August 10, 2026.

This United Airlines deal was found by Cheapflights users on 8/5. 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.
Sat 8/296:03 am -
1 stop6h 23m
Sat 9/51:31 pm -
1 stop5h 52m
Deal found 8/5$381
This United Airlines deal was found by Cheapflights users on 8/6. 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.
Sat 9/57:40 am -
2 stops12h 03m
Fri 9/111:36 pm -
1 stop5h 47m
Deal found 8/6$399
This United Airlines deal was found by Cheapflights users on 8/6. 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 9/210:45 am -
2 stops9h 13m
Sun 9/65:00 am -
1 stop8h 51m
Deal found 8/6$435
This United Airlines deal was found by Cheapflights users on 8/6. 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 10/2110:43 am -
2 stops10h 37m
Wed 10/287:00 am -
1 stop7h 02m
Deal found 8/6$437
This Delta deal was found by Cheapflights users on 8/6. 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.
Wed 10/2111:55 am -
1 stop6h 03m
Wed 10/2811:29 am -
2 stops10h 06m
Deal found 8/6$443
This Delta deal was found by Cheapflights users on 8/7. 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.
Wed 10/146:28 am -
2 stops18h 02m
Wed 10/2811:29 am -
2 stops10h 06m
Deal found 8/7$468

Find 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 August 10, 2026.

Round-trip from

$381
(United Airlines)

One-way from

$302
(Kiwi.com)
From Portland to South Dakota
Search Deals
One-way flight 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 August 10, 2026.
Use the filters below to find and compare flights from Portland to South Dakota that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

PortlandRapid City

PWM Portland - RAP Rapid City

PWMRAP

Portland

Sat 8/29

6:03 am-10:26 am

1 stop6h 23m

Rapid City

Sat 9/5

1:31 pm-9:23 pm

1 stop5h 52m

$381

PortlandRapid City

PWM Portland - RAP Rapid City

PWMRAP

Portland

Sat 9/5

7:40 am-5:43 pm

2 stops12h 03m

Rapid City

Fri 9/11

1:36 pm-9:23 pm

1 stop5h 47m

$399

PortlandRapid City

PWM Portland - RAP Rapid City

PWMRAP

Portland

Wed 10/21

10:43 am-7:20 pm

2 stops10h 37m

Rapid City

Wed 10/28

7:00 am-4:02 pm

1 stop7h 02m

$437

PortlandRapid City

PWM Portland - RAP Rapid City

PWMRAP

Portland

Wed 9/2

10:45 am-5:58 pm

2 stops9h 13m

Rapid City

Sun 9/6

5:00 am-5:42 pm

2 stops10h 42m

$469

PortlandRapid City

PWM Portland - RAP Rapid City

PWMRAP

Portland

Wed 2/3

11:17 am-10:08 pm

2 stops12h 51m

Rapid City

Sat 2/6

7:05 am-9:27 pm

2 stops12h 22m

$504

PortlandRapid City

PWM Portland - RAP Rapid City

PWMRAP

Portland

Thu 10/15

8:03 am-8:52 pm

2 stops14h 49m

Rapid City

Sun 10/18

1:37 pm-9:46 pm

1 stop6h 09m

$544

PortlandRapid City

PWM Portland - RAP Rapid City

PWMRAP

Portland

Sat 9/19

6:00 am-10:25 am

1 stop6h 25m

Rapid City

Sat 10/3

1:37 pm-9:46 pm

1 stop6h 09m

$568

PortlandRapid City

PWM Portland - RAP Rapid City

PWMRAP

Portland

Thu 9/24

10:47 am-9:52 pm

2 stops13h 05m

Rapid City

Wed 9/30

12:36 pm-11:47 pm

1 stop9h 11m

$576

PortlandRapid City

PWM Portland - RAP Rapid City

PWMRAP

Portland

Sat 9/19

7:00 am-12:46 pm

1 stop7h 46m

Rapid City

Sat 10/3

6:30 am-6:46 pm

1 stop10h 16m

$657
Cheapest one-way

PortlandRapid City

PWM Portland - RAP Rapid City

PWMRAP

Portland

Fri 8/21

6:29 pm-2:40 pm

3 stops46h 11m

$302

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/5

Showing 1-10 of 16 resultsSorted by cheapest first
1
2

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

No data available for this route at this time. Please check back soon.

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 August 10, 2026.
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
10,095 reviews

Comfort

7.3

Crew

8.1

Boarding

7.7

Overall

7.4

Entertainment

7.1

Food

6.7

Reviews

1 / 20
2.0
Mediocre

Dawn,Aug 2026

ORD - DEN

I missed my connecting flight because our plane took off ten minutes late and then when we got to the airport another plane was in our shoot waiting to get fueled up and that took 30 minutes so I missed my connecting flight. I asked if I could get off and they assured me the plane would most likely wait for me since they know what time the planes get in because of an app. I was not happy. I had to wait till 7:25 to board the next flight and then that was delayed. Gates changed till 9:20. Terrible
United Airlines
7.4
Good
10,095 reviews
United Airlines
7.4
Good
10,095 reviews

Comfort

7.3

Crew

8.1

Boarding

7.7

Overall

7.4

Entertainment

7.1

Food

6.7

Reviews

1 / 20
2.0
Mediocre

Dawn,Aug 2026

ORD - DEN

I missed my connecting flight because our plane took off ten minutes late and then when we got to the airport another plane was in our shoot waiting to get fueled up and that took 30 minutes so I missed my connecting flight. I asked if I could get off and they assured me the plane would most likely wait for me since they know what time the planes get in because of an app. I was not happy. I had to wait till 7:25 to board the next flight and then that was delayed. Gates changed till 9:20. Terrible
American Airlines
7.1
Good
11,897 reviews
United Airlines
7.4
Good
10,095 reviews

Comfort

7.3

Crew

8.1

Boarding

7.7

Overall

7.4

Entertainment

7.1

Food

6.7

Reviews

1 / 20
2.0
Mediocre

Dawn,Aug 2026

ORD - DEN

I missed my connecting flight because our plane took off ten minutes late and then when we got to the airport another plane was in our shoot waiting to get fueled up and that took 30 minutes so I missed my connecting flight. I asked if I could get off and they assured me the plane would most likely wait for me since they know what time the planes get in because of an app. I was not happy. I had to wait till 7:25 to board the next flight and then that was delayed. Gates changed till 9:20. Terrible

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 6h 23m. There are 1620 mi between Portland, Maine and South Dakota.

  • 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.

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 August 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$268Average$572FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$422Average$590FlexibilityNo cancel feeOn-time71%

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