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$284+ Cheap flights from South Dakota to Portland, ME (PWM)

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 12/6. Fares are subject to change and may not be available on all flights or dates of travel.
FSD — PWM
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheap flight deals from South Dakota to Portland

Keep the following information in mind while searching for South Dakota to Portland flight deals. Data was last updated September 16, 2025.

Round-trip from

$359
(United Airlines)

One-way from

$284
(Delta)

Popular in

July

Cheapest in

April

Average price

$368
From South Dakota to Portland
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One-way flight from South Dakota to Portland
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Highest demand for flights based on searches. 15% potential increase in price ($85 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($25 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from South Dakota to Portland

Cheapest flights from South Dakota to Portland
Explore the most affordable flight options available from South Dakota to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This Delta deal was found by Cheapflights users on 9/16. 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 9/175:00 amFSD - PWM
1 stop4h 40mDelta
Tue 9/2311:40 amPWM - FSD
2 stops12h 22mDelta
Deal found 9/16$354
This Delta deal was found by Cheapflights users on 9/13. 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 9/295:00 amFSD - PWM
1 stop4h 40mDelta
Fri 10/311:45 amPWM - FSD
1 stop6h 20mDelta
Deal found 9/13$377
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Wed 10/111:19 amFSD - PWM
2 stops10h 54mUnited Airlines
Mon 10/63:39 pmPWM - FSD
1 stop8h 36mUnited Airlines
Deal found 9/15$379
This United Airlines deal was found by Cheapflights users on 9/13. 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.
Mon 9/293:12 pmFSD - PWM
1 stop5h 32mUnited Airlines
Fri 10/39:59 amPWM - FSD
2 stops11h 22mUnited Airlines
Deal found 9/13$382
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Wed 9/179:16 amFSD - PWM
2 stops12h 47mUnited Airlines
Tue 9/236:00 amPWM - FSD
2 stops9h 37mUnited Airlines
Deal found 9/15$472

Cheapflights Fare Finder

 
Customize your flight search to find flights from South Dakota to Portland 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 September 16, 2025.
Use the filters below to find and compare flights from South Dakota to Portland that are best for you.

Fly from

South Dakota

Fly to

Portland

Route

Depart

Return

Price

Sioux FallsPortland

FSD - PWM

FSDPWM

Sioux Falls Joe Foss Field

Tue 3/3

9:14 am-11:21 pm

2 stops13h 07m

Portland

Sat 3/7

6:00 am-2:35 pm

2 stops9h 35m

$359

Sioux FallsPortland

FSD - PWM

FSDPWM

Sioux Falls Joe Foss Field

Mon 9/29

5:00 am-10:40 am

1 stop4h 40m

Portland

Fri 10/3

11:45 am-5:05 pm

1 stop6h 20m

$377

Sioux FallsPortland

FSD - PWM

FSDPWM

Sioux Falls Joe Foss Field

Mon 9/29

3:12 pm-9:44 pm

1 stop5h 32m

Portland

Fri 10/3

9:59 am-8:21 pm

2 stops11h 22m

$382

Sioux FallsPortland

FSD - PWM

FSDPWM

Sioux Falls Joe Foss Field

Wed 10/1

8:00 am-2:33 pm

1 stop5h 33m

Portland

Mon 10/6

3:39 pm-11:15 pm

1 stop8h 36m

$453

Sioux FallsPortland

FSD - PWM

FSDPWM

Sioux Falls Joe Foss Field

Thu 11/20

8:00 am-2:12 pm

1 stop5h 12m

Portland

Tue 11/25

4:54 pm-9:46 pm

1 stop5h 52m

$499

Sioux FallsPortland

FSD - PWM

FSDPWM

Sioux Falls Joe Foss Field

Sat 12/6

5:18 am-4:06 pm

2 stops9h 48m

$284

Sioux FallsPortland

FSD - PWM

FSDPWM

Sioux Falls Joe Foss Field

Sat 12/6

11:20 am-2:22 pm

1 stop26h 02m

$697

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Best time to book a flight from South Dakota to Portland

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

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

Currently, January is the cheapest month in which you can book a flight from South Dakota to Portland, Maine (average of $296). Flying from South Dakota to Portland, Maine in July is currently the most expensive (average of $394). 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 South Dakota to Portland, Maine?

Related info for your journey

Find useful and relevant information for your journey from South Dakota to Portland. 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 into for flights to Portland from South Dakota?

    Portland (PWM), located 2.9 mi from the city center, is the airport you fly into when you book flights from South Dakota to Portland.

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

    For as low as $377, United Airlines can have you in Portland, Maine from South Dakota in 4h 40m. There are 1316 mi between South Dakota and Portland, Maine. This flight may include one or multiple stops.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from South Dakota to Portland, Maine (average of $296). Flying from South Dakota to Portland, Maine in July is currently the most expensive (average of $394). 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
Brunswick
North Conway
Auburn
Conway
Lewiston

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Top 3 airlines flying from South Dakota to Portland

Discover the top 3 airlines that operate flights from South Dakota 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 September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$268Average$378FlexibilityNo cancel feeOn-time71%
DeltaCheapest$268Average$364FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$306Average$443FlexibilityNo cancel feeOn-time69%

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