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 37% 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.

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

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 August 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.

$238 Cheap Flights from Portland, Maine to South Dakota in 2026

Discover deals from 900+ travel sites with momondo.

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.

6:03 am - 10:26 amPWM Portland-RAP Rapid City

6h 23m1 stop Chicago O'Hare Intl

1:31 pm - 9:23 pmRAP Rapid City-PWM Portland

5h 52m1 stop Chicago O'Hare Intl

$429United Airlines

Thu, Aug 27 - Sun, Aug 30

3:37 pm - 10:28 pmPWM Portland-RAP Rapid City

8h 51m1 stop Denver Intl

7:00 am - 3:51 pmRAP Rapid City-PWM Portland

6h 51m1 stop Denver Intl

$429United Airlines

Thu, Aug 27 - Mon, Aug 31

11:50 am - 3:49 pmPWM Portland-RAP Rapid City

5h 59m1 stop Minneapolis St Paul

12:32 pm - 9:31 pmRAP Rapid City-PWM Portland

6h 59m1 stop Atlanta Hartsfield-Jackson

$429Delta

Thu, Aug 27 - Sat, Aug 29

3:37 pm - 8:37 pmPWM Portland-RAP Rapid City

7h 00m1 stop Denver Intl

7:00 am - 3:51 pmRAP Rapid City-PWM Portland

6h 51m1 stop Denver Intl

$429United Airlines

Thu, Aug 27 - Tue, Sep 1

6:03 am - 10:26 amPWM Portland-RAP Rapid City

6h 23m1 stop Chicago O'Hare Intl

11:22 am - 9:23 pmRAP Rapid City-PWM Portland

8h 01m2 stops Denver Intl Chicago O'Hare Intl

$434United Airlines

Thu, Aug 27 - Sat, Aug 29

3:37 pm - 8:37 pmPWM Portland-RAP Rapid City

7h 00m1 stop Denver Intl

11:22 am - 11:59 pmRAP Rapid City-PWM Portland

10h 37m2 stops Denver Intl Washington, D.C. Dulles Intl

$434United Airlines

Thu, Aug 27 - Mon, Aug 31

6:00 am - 4:25 pmPWM Portland-RAP Rapid City

12h 25m2 stops Philadelphia Dallas/Fort Worth

10:24 am - 9:36 pmRAP Rapid City-PWM Portland

9h 12m2 stops Dallas/Fort Worth Philadelphia

$456American Airlines

Tue, Oct 13 - Tue, Oct 27

6:00 am - 4:25 pmPWM Portland-RAP Rapid City

12h 25m2 stops Philadelphia Dallas/Fort Worth

10:24 am - 11:36 pmRAP Rapid City-PWM Portland

11h 12m2 stops Dallas/Fort Worth Philadelphia

$480American Airlines

Tue, Oct 13 - Tue, Oct 20

6:00 am - 4:25 pmPWM Portland-RAP Rapid City

12h 25m2 stops Philadelphia Dallas/Fort Worth

6:00 am - 6:56 pmRAP Rapid City-PWM Portland

10h 56m2 stops Dallas/Fort Worth Philadelphia

$510American Airlines

Tue, Oct 13 - Tue, Oct 27

8:59 am - 4:25 pmPWM Portland-RAP Rapid City

9h 26m1 stop Dallas/Fort Worth

10:24 am - 9:36 pmRAP Rapid City-PWM Portland

9h 12m2 stops Dallas/Fort Worth Philadelphia

$551American Airlines

Tue, Oct 13 - Tue, Oct 27

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United Airlines flights from Portland, Maine to South Dakota

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

United Airlines

Aug 27

PWM3:37 pmPortland

7h 00m

1 stop

RAP8:37 pmRapid City

Sep 1

RAP7:00 amRapid City

6h 51m

1 stop

PWM3:51 pmPortland

$429

United Airlines

Aug 27

PWM3:37 pmPortland

7h 00m

1 stop

RAP8:37 pmRapid City

Sep 1

RAP10:26 amRapid City

11h 06m

2 stops

PWM11:32 pmPortland

$434

United Airlines

Aug 27

PWM10:45 amPortland

9h 13m

2 stops

RAP5:58 pmRapid City

Aug 31

RAP1:31 pmRapid City

8h 01m

2 stops

PWM11:32 pmPortland

$439

American Airlines flights from Portland, Maine to South Dakota

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

American Airlines

Oct 13

PWM6:00 amPortland

12h 25m

2 stops

RAP4:25 pmRapid City

Oct 27

RAP10:24 amRapid City

9h 12m

2 stops

PWM9:36 pmPortland

$456

American Airlines

Oct 13

PWM6:00 amPortland

12h 25m

2 stops

RAP4:25 pmRapid City

Oct 20

RAP10:24 amRapid City

11h 12m

2 stops

PWM11:36 pmPortland

$480

American Airlines

Oct 13

PWM6:00 amPortland

12h 25m

2 stops

RAP4:25 pmRapid City

Oct 27

RAP6:00 amRapid City

10h 56m

2 stops

PWM6:56 pmPortland

$510

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

Quickest round-trip

PortlandRapid City

PWM Portland - RAP Rapid City

PWMRAP

Portland

Thu 8/27

6:03 am-10:26 am

1 stop6h 23m

Rapid City

Sun 8/30

1:31 pm-9:23 pm

1 stop5h 52m

$429

PortlandRapid City

PWM Portland - RAP Rapid City

PWMRAP

Portland

Thu 8/27

3:37 pm-10:28 pm

1 stop8h 51m

Rapid City

Mon 8/31

7:00 am-3:51 pm

1 stop6h 51m

$429

PortlandRapid City

PWM Portland - RAP Rapid City

PWMRAP

Portland

Thu 8/27

11:50 am-3:49 pm

1 stop5h 59m

Rapid City

Sat 8/29

12:32 pm-9:31 pm

1 stop6h 59m

$429

PortlandRapid City

PWM Portland - RAP Rapid City

PWMRAP

Portland

Thu 8/27

3:37 pm-8:37 pm

1 stop7h 00m

Rapid City

Tue 9/1

7:00 am-3:51 pm

1 stop6h 51m

$429

PortlandRapid City

PWM Portland - RAP Rapid City

PWMRAP

Portland

Thu 8/27

6:03 am-10:26 am

1 stop6h 23m

Rapid City

Sat 8/29

11:22 am-9:23 pm

2 stops8h 01m

$434

PortlandRapid City

PWM Portland - RAP Rapid City

PWMRAP

Portland

Thu 8/27

3:37 pm-8:37 pm

1 stop7h 00m

Rapid City

Mon 8/31

11:22 am-11:59 pm

2 stops10h 37m

$434

PortlandRapid City

PWM Portland - RAP Rapid City

PWMRAP

Portland

Tue 10/13

6:00 am-4:25 pm

2 stops12h 25m

Rapid City

Tue 10/27

10:24 am-9:36 pm

2 stops9h 12m

$456

PortlandRapid City

PWM Portland - RAP Rapid City

PWMRAP

Portland

Tue 10/13

6:00 am-4:25 pm

2 stops12h 25m

Rapid City

Tue 10/20

10:24 am-11:36 pm

2 stops11h 12m

$480

PortlandRapid City

PWM Portland - RAP Rapid City

PWMRAP

Portland

Tue 10/13

6:00 am-4:25 pm

2 stops12h 25m

Rapid City

Tue 10/27

6:00 am-6:56 pm

2 stops10h 56m

$510

PortlandRapid City

PWM Portland - RAP Rapid City

PWMRAP

Portland

Tue 10/13

8:59 am-4:25 pm

1 stop9h 26m

Rapid City

Tue 10/27

10:24 am-9:36 pm

2 stops9h 12m

$551

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 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	5h 59m
Direct flights	None

The fastest flight from Portland, Maine to South Dakota takes 5h 59m

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 August 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 $268	Free Cancellation	Rating 7.4 10,108 reviews		Search United Airlines flights
American Airlines	PriceFrom $422	Free Cancellation	Rating 7.1 11,929 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.