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Cheap flights from Portland, Maine to South Dakota from $389

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Portland, Maine to South Dakota departing on 1/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Portland, Maine to South Dakota

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
6:00 am - 7:14 pm
PWM
-
RAP
15h 14m2 stops
United Airlines Logo
10:45 am - 11:27 pm
RAP
-
PWM
10h 42m2 stops
$389United Airlines
Sat, Jan 24 - Tue, Jan 27
United Airlines Logo
8:40 am - 7:14 pm
PWM
-
RAP
12h 34m2 stops
United Airlines Logo
10:45 am - 11:27 pm
RAP
-
PWM
10h 42m2 stops
$409United Airlines
Sat, Jan 24 - Tue, Jan 27
American Airlines Logo
5:45 am - 1:50 pm
PWM
-
RAP
10h 05m2 stops
American Airlines Logo
2:20 pm - 12:10 pm
RAP
-
PWM
19h 50m2 stops
$1,376American Airlines
Fri, Dec 26 - Tue, Dec 30
American Airlines Logo
5:45 am - 1:50 pm
PWM
-
RAP
10h 05m2 stops
American Airlines Logo
5:30 am - 4:39 pm
RAP
-
PWM
9h 09m2 stops
$1,456American Airlines
Fri, Dec 26 - Fri, Jan 2
American Airlines Logo
5:45 am - 1:50 pm
PWM
-
RAP
10h 05m2 stops
American Airlines Logo
5:30 am - 10:51 pm
RAP
-
PWM
15h 21m3 stops
$1,539American Airlines
Fri, Dec 26 - Tue, Dec 30
American Airlines Logo
5:45 am - 1:50 pm
PWM
-
RAP
10h 05m2 stops
American Airlines Logo
5:30 am - 10:51 pm
RAP
-
PWM
15h 21m3 stops
$1,663American Airlines
Fri, Dec 26 - Fri, Jan 2
United Airlines Logo
4:10 pm - 10:30 am
PWM
-
RAP
20h 20m1 stop
United Airlines Logo
1:27 pm - 9:29 pm
RAP
-
PWM
6h 02m1 stop
$1,759United Airlines
Fri, Dec 26 - Tue, Dec 30
American Airlines Logo
7:17 am - 9:20 pm
PWM
-
RAP
16h 03m3 stops
American Airlines Logo
5:30 am - 10:51 pm
RAP
-
PWM
15h 21m3 stops
$2,044American Airlines
Fri, Dec 26 - Tue, Dec 30
American Airlines Logo
12:21 pm - 9:20 pm
PWM
-
RAP
10h 59m3 stops
American Airlines Logo
5:30 am - 10:51 pm
RAP
-
PWM
15h 21m3 stops
$2,115American Airlines
Fri, Dec 26 - Fri, Jan 2
United Airlines Logo
4:10 pm - 10:30 am
PWM
-
RAP
20h 20m1 stop
United Airlines Logo
1:27 pm - 2:14 pm
RAP
-
PWM
22h 47m1 stop
$2,512United Airlines
Fri, Dec 26 - Fri, Jan 2

United Airlines flights from Portland, Maine to South Dakota

Our best United Airlines deals on Portland, Maine to South Dakota flight tickets
United Airlines
Jan 24
PWM6:00 amPortland
15h 14m
2 stops
RAP7:14 pmRapid City
Jan 27
RAP10:45 amRapid City
10h 42m
2 stops
PWM11:27 pmPortland
$389
Find similar
United Airlines
Jan 24
PWM8:40 amPortland
12h 34m
2 stops
RAP7:14 pmRapid City
Jan 27
RAP10:45 amRapid City
10h 42m
2 stops
PWM11:27 pmPortland
$409
Find similar
United Airlines
Dec 26
PWM4:10 pmPortland
20h 20m
1 stop
RAP10:30 amRapid City
Dec 30
RAP1:27 pmRapid City
6h 02m
1 stop
PWM9:29 pmPortland
$1,759
Find similar

American Airlines flights from Portland, Maine to South Dakota

Our best American Airlines deals on Portland, Maine to South Dakota flight tickets
American Airlines
Dec 26
PWM5:45 amPortland
10h 05m
2 stops
RAP1:50 pmRapid City
Dec 30
RAP2:20 pmRapid City
19h 50m
2 stops
PWM12:10 pmPortland
$1,376
Find similar
American Airlines
Dec 26
PWM5:45 amPortland
10h 05m
2 stops
RAP1:50 pmRapid City
Jan 2
RAP5:30 amRapid City
9h 09m
2 stops
PWM4:39 pmPortland
$1,456
Find similar
American Airlines
Dec 26
PWM5:45 amPortland
10h 05m
2 stops
RAP1:50 pmRapid City
Dec 30
RAP5:30 amRapid City
15h 21m
3 stops
PWM10:51 pmPortland
$1,539
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Portland, Maine 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, momondo users made 832,500 searches. Data last updated December 11, 2025.
Use the filters below to find and compare flights from Portland, Maine to South Dakota that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PortlandRapid City

PWM - RAP

PWMRAP

Portland

Sat 1/24

6:00 am-7:14 pm

2 stops15h 14m

Rapid City

Tue 1/27

10:45 am-11:27 pm

2 stops10h 42m

$389

PortlandRapid City

PWM - RAP

PWMRAP

Portland

Sat 1/24

8:40 am-7:14 pm

2 stops12h 34m

Rapid City

Tue 1/27

10:45 am-11:27 pm

2 stops10h 42m

$409

PortlandRapid City

PWM - RAP

PWMRAP

Portland

Fri 12/26

5:45 am-1:50 pm

2 stops10h 05m

Rapid City

Tue 12/30

2:20 pm-12:10 pm

2 stops19h 50m

$1,376

PortlandRapid City

PWM - RAP

PWMRAP

Portland

Fri 12/26

5:45 am-1:50 pm

2 stops10h 05m

Rapid City

Fri 1/2

5:30 am-4:39 pm

2 stops9h 09m

$1,456

PortlandRapid City

PWM - RAP

PWMRAP

Portland

Fri 12/26

5:45 am-1:50 pm

2 stops10h 05m

Rapid City

Tue 12/30

5:30 am-10:51 pm

3 stops15h 21m

$1,539

PortlandRapid City

PWM - RAP

PWMRAP

Portland

Fri 12/26

5:45 am-1:50 pm

2 stops10h 05m

Rapid City

Fri 1/2

5:30 am-10:51 pm

3 stops15h 21m

$1,663

PortlandRapid City

PWM - RAP

PWMRAP

Portland

Fri 12/26

4:10 pm-10:30 am

1 stop20h 20m

Rapid City

Tue 12/30

1:27 pm-9:29 pm

1 stop6h 02m

$1,759

PortlandRapid City

PWM - RAP

PWMRAP

Portland

Fri 12/26

7:17 am-9:20 pm

3 stops16h 03m

Rapid City

Tue 12/30

5:30 am-10:51 pm

3 stops15h 21m

$2,044

PortlandRapid City

PWM - RAP

PWMRAP

Portland

Fri 12/26

12:21 pm-9:20 pm

3 stops10h 59m

Rapid City

Fri 1/2

5:30 am-10:51 pm

3 stops15h 21m

$2,115

PortlandRapid City

PWM - RAP

PWMRAP

Portland

Fri 12/26

4:10 pm-10:30 am

1 stop20h 20m

Rapid City

Fri 1/2

1:27 pm-2:14 pm

1 stop22h 47m

$2,512

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to South Dakota from

How to get the cheapest flight ticket from Portland, Maine to South Dakota

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to South Dakota?

The cheapest day to depart from Portland, Maine to South Dakota is on a Saturday. Travelers who choose to depart for South Dakota on a Saturday will often find tickets for as low as $518. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $773. These prices are subject to change though, so be sure to set up a Price Alert for flights to South Dakota.

What is the cheapest time of day to depart on your flight to South Dakota?

The cheapest time of day to fly to South Dakota is in the morning when flights can be purchased for as low as $618. In the afternoon is when there is more demand to fly to South Dakota, so prices are often more expensive at around $658 per ticket.

Can stopping save me money on Portland, Maine to South Dakota flights?

You could potentially save up to 8% on your flight if you consider stops on a Portland, Maine to South Dakota flight.

Cheap Portland, Maine to South Dakota flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland, Maine to South Dakota

Fastest flight time

12h 34m

Direct flights

None
The fastest flight from Portland, Maine to South Dakota takes 12h 34m
There are no direct flights from Portland, Maine to South Dakota. There are no popular flight routes from Portland, Maine to South Dakota.
Search flight deals

  • When did momondo last update prices for flights from Portland Airport to South Dakota?

    Prices for flights from Portland Airport to South Dakota are updated daily.

  • How many operators does momondo search for flights from Portland Airport to South Dakota?

  • How old do you have to be to fly from Portland Airport to South Dakota?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Portland Airport to South Dakota.

  • What documentation or ID do you need to fly to South Dakota?

    The travel and health documents required for your trip to South Dakota can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at South Dakota. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Portland, Maine to South Dakota

Compare and see reviews for airlines that fly from Portland, Maine to South Dakota with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $313Free CancellationRating
7.2
11,050 reviews
Search American Airlines flights
United AirlinesPriceFrom $349Free CancellationRating
7.4
9,095 reviews
Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Portland to South Dakota?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Portland to South Dakota. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Portland to South Dakota with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to South Dakota from Portland with this policy.

How can momondo help me find flights from Portland to South Dakota?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Portland to South Dakota.

I’m not ready to book a flight from Portland to South Dakota right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Portland to South Dakota flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your South Dakota trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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