What is the cheapest airline that flies from Portland to South Dakota?

United Airlines is the most popular carrier operating from Portland to South Dakota

What airlines fly to South Dakota?

American Airlines, Delta and United Airlines are the top three most popular airlines that fly to South Dakota from Portland, Maine according to our data. American Airlines is the first choice among our users, with 42% of people opting to fly with this airline when traveling to South Dakota. Keep in mind that there are 3 different airlines that fly to South Dakota on a routine basis, so you have a few additional options to choose from.

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?

There are 2 operators available for flights from Portland Airport to South Dakota as of June 2026.

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.

$448 Cheap Flights from Portland, Maine to South Dakota in 2026

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Find the cheapest flights from Portland, Maine to South Dakota

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:00 am - 11:14 am

PWM

RAP

7h 14m

1 stop

3:25 pm - 12:43 am

RAP

PWM

7h 18m

1 stop

$537American Airlines

Thu, Jul 23 - Mon, Jul 27

5:00 pm - 11:16 pm

PWM

RAP

8h 16m

1 stop

1:35 pm - 9:41 pm

RAP

PWM

6h 06m

1 stop

$538United Airlines

Thu, Jul 9 - Sun, Jul 12

8:00 am - 4:20 pm

PWM

RAP

10h 20m

2 stops

3:25 pm - 12:43 am

RAP

PWM

7h 18m

1 stop

$558American Airlines

Thu, Jul 9 - Sun, Jul 12

6:00 am - 11:14 am

PWM

RAP

7h 14m

1 stop

3:25 pm - 12:43 am

RAP

PWM

7h 18m

1 stop

$568American Airlines

Thu, Jul 23 - Mon, Jul 27

6:00 am - 11:14 am

PWM

RAP

7h 14m

1 stop

4:55 pm - 11:45 am

RAP

PWM

16h 50m

2 stops

$578American Airlines

Thu, Jul 23 - Mon, Jul 27

6:00 am - 12:24 pm

PWM

RAP

8h 24m

2 stops

1:31 pm - 9:23 pm

RAP

PWM

5h 52m

1 stop

$584United Airlines

Thu, Sep 10 - Sun, Sep 13

6:30 am - 11:15 am

PWM

RAP

6h 45m

1 stop

6:30 am - 6:46 pm

RAP

PWM

10h 16m

1 stop

$599American Airlines

Thu, Sep 10 - Sun, Sep 13

10:47 am - 9:50 pm

PWM

RAP

13h 03m

2 stops

6:30 am - 6:46 pm

RAP

PWM

10h 16m

1 stop

$604American Airlines

Thu, Sep 10 - Sun, Sep 13

1:25 pm - 9:31 pm

PWM

RAP

10h 06m

2 stops

3:25 pm - 12:43 am

RAP

PWM

7h 18m

1 stop

$605American Airlines

Thu, Jul 23 - Mon, Jul 27

9:52 am - 2:49 pm

PWM

RAP

30h 57m

1 stop

5:09 pm - 5:58 pm

RAP

PWM

22h 49m

2 stops

$617Multiple Airlines

Fri, Jul 3 - Fri, Jul 10

United Airlines flights from Portland, Maine to South Dakota

Our best United Airlines deals on Portland, Maine to South Dakota flight tickets

United Airlines

Jul 9

PWM5:00 pmPortland

8h 16m

1 stop

RAP11:16 pmRapid City

Jul 12

RAP1:35 pmRapid City

6h 06m

1 stop

PWM9:41 pmPortland

$538

United Airlines

Sep 10

PWM6:00 amPortland

8h 24m

2 stops

RAP12:24 pmRapid City

Sep 13

RAP1:31 pmRapid City

5h 52m

1 stop

PWM9:23 pmPortland

$584

United Airlines

Aug 8

PWM5:15 amPortland

20h 01m

2 stops

RAP11:16 pmRapid City

Aug 14

RAP1:31 pmRapid City

5h 52m

1 stop

PWM9:23 pmPortland

$713

American Airlines flights from Portland, Maine to South Dakota

Our best American Airlines deals on Portland, Maine to South Dakota flight tickets

American Airlines

Jul 23

PWM6:00 amPortland

7h 14m

1 stop

RAP11:14 amRapid City

Jul 27

RAP3:25 pmRapid City

7h 18m

1 stop

PWM12:43 amPortland

$537

American Airlines

Jul 9

PWM8:00 amPortland

10h 20m

2 stops

RAP4:20 pmRapid City

Jul 12

RAP3:25 pmRapid City

7h 18m

1 stop

PWM12:43 amPortland

$558

American Airlines

Jul 23

PWM6:00 amPortland

7h 14m

1 stop

RAP11:14 amRapid City

Jul 27

RAP3:25 pmRapid City

7h 18m

1 stop

PWM12:43 amPortland

$568

momondo Fare Finder

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

Cheapest round-trip

PortlandRapid City

PWM - RAP

PWMRAP

Portland

Thu 7/23

6:00 am-11:14 am

1 stop7h 14m

Rapid City

Mon 7/27

3:25 pm-12:43 am

1 stop7h 18m

$537

PortlandRapid City

PWM - RAP

PWMRAP

Portland

Thu 7/9

5:00 pm-11:16 pm

1 stop8h 16m

Rapid City

Sun 7/12

1:35 pm-9:41 pm

1 stop6h 06m

$538

PortlandRapid City

PWM - RAP

PWMRAP

Portland

Thu 7/9

8:00 am-4:20 pm

2 stops10h 20m

Rapid City

Sun 7/12

3:25 pm-12:43 am

1 stop7h 18m

$558

PortlandRapid City

PWM - RAP

PWMRAP

Portland

Thu 7/23

6:00 am-11:14 am

1 stop7h 14m

Rapid City

Mon 7/27

3:25 pm-12:43 am

1 stop7h 18m

$568

PortlandRapid City

PWM - RAP

PWMRAP

Portland

Thu 7/23

6:00 am-11:14 am

1 stop7h 14m

Rapid City

Mon 7/27

4:55 pm-11:45 am

2 stops16h 50m

$578

Quickest round-trip

PortlandRapid City

PWM - RAP

PWMRAP

Portland

Thu 9/10

6:00 am-12:24 pm

2 stops8h 24m

Rapid City

Sun 9/13

1:31 pm-9:23 pm

1 stop5h 52m

$584

PortlandRapid City

PWM - RAP

PWMRAP

Portland

Thu 9/10

6:30 am-11:15 am

1 stop6h 45m

Rapid City

Sun 9/13

6:30 am-6:46 pm

1 stop10h 16m

$599

PortlandRapid City

PWM - RAP

PWMRAP

Portland

Thu 9/10

10:47 am-9:50 pm

2 stops13h 03m

Rapid City

Sun 9/13

6:30 am-6:46 pm

1 stop10h 16m

$604

PortlandRapid City

PWM - RAP

PWMRAP

Portland

Thu 7/23

1:25 pm-9:31 pm

2 stops10h 06m

Rapid City

Mon 7/27

3:25 pm-12:43 am

1 stop7h 18m

$605

PortlandRapid City

PWM - RAP

PWMRAP

Portland

Fri 7/3

9:52 am-2:49 pm

1 stop30h 57m

Rapid City

Fri 7/10

5:09 pm-5:58 pm

2 stops22h 49m

$617

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 resultsSorted by cheapest first

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

Prices

Airlines

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

You could potentially save up to 17% 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	6h 26m
Direct flights	None

The fastest flight from Portland, Maine to South Dakota takes 6h 26m

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

Frequently asked questions about flying from Portland, Maine to South Dakota

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?
There are 2 operators available for flights from Portland Airport to South Dakota as of June 2026.
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
United Airlines	PriceFrom $322	Free Cancellation	Rating 7.4 9,773 reviews		Search United Airlines flights
American Airlines	PriceFrom $422	Free Cancellation	Rating 7.1 11,641 reviews		Search American 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.