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South Dakota

$261+ 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 5/24. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — FSD
Apr 17 — Apr 241
Fri 4/17
Fri 4/24
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 March 18, 2026.

This American Airlines deal was found by Cheapflights users on 3/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/298:01 am
PWM
-
RAP
2 stops9h 59m
American Airlines
Tue 10/65:52 am
RAP
-
PWM
1 stop9h 10m
American Airlines
Deal found 3/14$439
This United Airlines deal was found by Cheapflights users on 3/15. 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 5/24:50 pm
PWM
-
RAP
1 stop6h 56m
United Airlines
Tue 5/57:00 am
RAP
-
PWM
1 stop6h 41m
United Airlines
Deal found 3/15$459
This Delta deal was found by Cheapflights users on 3/15. 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.
Mon 11/211:30 am
PWM
-
RAP
1 stop5h 46m
Delta
Sat 11/76:20 am
RAP
-
PWM
2 stops14h 03m
Delta
Deal found 3/15$479
This American Airlines deal was found by Cheapflights users on 3/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/116:25 am
PWM
-
RAP
1 stop6h 49m
American Airlines
Tue 7/143:25 pm
RAP
-
PWM
1 stop6h 44m
American Airlines
Deal found 3/15$500

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 March 18, 2026.

Round-trip from

$459
(United Airlines)

One-way from

$261
(American Airlines)

Popular in

April

Cheapest in

August
From Portland to South Dakota
Search Deals
One-way flight from Portland to South Dakota
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($56 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($28 potential savings vs. average RT price).
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 March 18, 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 - RAP

PWMRAP

Portland

Sat 5/2

4:50 pm-9:46 pm

1 stop6h 56m

Rapid City

Tue 5/5

7:00 am-3:41 pm

1 stop6h 41m

$459
Cheapest one-way

PortlandRapid City

PWM - RAP

PWMRAP

Portland

Sun 5/24

6:00 am-11:14 am

1 stop7h 14m

$261
Quickest one-way

PortlandRapid City

PWM - RAP

PWMRAP

Portland

Mon 5/25

6:00 am-10:24 am

1 stop6h 24m

$316

PortlandRapid City

PWM - RAP

PWMRAP

Portland

Tue 6/9

6:00 am-4:30 pm

2 stops12h 30m

$331

PortlandRapid City

PWM - RAP

PWMRAP

Portland

Tue 6/9

5:15 am-9:37 pm

3 stops18h 22m

$507

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/17

Sorted by cheapest first

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, July is the cheapest month in which you can book a flight from Portland, Maine to South Dakota (average of $239). Flying from Portland, Maine to South Dakota in March is currently the most expensive (average of $486). 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 March 18, 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
9,435 reviews

Boarding

7.7

Food

6.6

Overall

7.4

Crew

8.1

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,435 reviews
United Airlines
7.4
Good
9,435 reviews

Boarding

7.7

Food

6.6

Overall

7.4

Crew

8.1

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
American Airlines
7.1
Good
11,468 reviews
United Airlines
7.4
Good
9,435 reviews

Boarding

7.7

Food

6.6

Overall

7.4

Crew

8.1

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

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 56m. 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.

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

    Currently, July is the cheapest month in which you can book a flight from Portland, Maine to South Dakota (average of $239). Flying from Portland, Maine to South Dakota in March is currently the most expensive (average of $486). 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.

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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 March 18, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$313Average$526FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$341Average$631FlexibilityNo cancel feeOn-time69%

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