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

American Airlines, Delta, and United Airlines are the most popular carriers operating from Portland to South Dakota

What airlines fly to South Dakota?

United Airlines, American Airlines and Delta are the top three most popular airlines that fly to South Dakota from Portland according to our data. United Airlines is the first choice among our users, with 51% of people opting to fly with this airline when traveling to South Dakota. Keep in mind that there are 4 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 were last updated today.

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

As of March 2026, there are 4 operators available to choose from for flights from Portland Airport to South Dakota.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to South Dakota.

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

The necessary travel and health documents for your South Dakota trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$126 Cheap Flights from Portland to South Dakota in 2026

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Find the cheapest flights from Portland to South Dakota

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

12:30 am - 10:21 am

PDX

FSD

7h 51m

1 stop

1:34 pm - 8:25 pm

FSD

PDX

8h 51m

1 stop

$251Delta

Tue, Mar 31 - Wed, Apr 8

12:30 am - 10:21 am

PDX

FSD

7h 51m

1 stop

1:34 pm - 11:54 pm

FSD

PDX

12h 20m

2 stops

$256Delta

Tue, Mar 31 - Wed, Apr 8

12:30 am - 10:21 am

PDX

FSD

7h 51m

1 stop

1:34 pm - 8:25 pm

FSD

PDX

8h 51m

1 stop

$271Delta

Tue, Mar 31 - Wed, Apr 8

12:30 am - 10:21 am

PDX

FSD

7h 51m

1 stop

1:34 pm - 11:54 pm

FSD

PDX

12h 20m

2 stops

$276Delta

Tue, Mar 31 - Wed, Apr 8

6:05 am - 3:18 pm

PDX

RAP

8h 13m

1 stop

10:58 am - 5:32 pm

RAP

PDX

7h 34m

1 stop

$279Delta

Sat, Apr 11 - Sat, Apr 18

8:40 am - 3:40 pm

PDX

RAP

6h 00m

1 stop

12:00 pm - 8:48 pm

RAP

PDX

9h 48m

2 stops

$284United Airlines

Sat, Apr 11 - Sat, Apr 18

12:50 pm - 7:13 pm

PDX

RAP

5h 23m

1 stop

5:00 am - 9:47 am

RAP

PDX

5h 47m

1 stop

$295United Airlines

Wed, Jun 3 - Wed, Jun 17

11:56 am - 9:54 pm

PDX

FSD

7h 58m

1 stop

5:28 pm - 11:54 pm

FSD

PDX

8h 26m

1 stop

$315American Airlines

Wed, Apr 29 - Sun, May 3

3:28 pm - 11:59 pm

PDX

FSD

6h 31m

1 stop

1:41 pm - 9:38 pm

FSD

PDX

9h 57m

1 stop

$324American Airlines

Wed, May 13 - Tue, May 19

12:23 pm - 9:04 pm

PDX

RAP

31h 41m

2 stops

3:31 pm - 6:27 pm

RAP

PDX

27h 56m

1 stop

$346Multiple Airlines

Wed, Jun 3 - Wed, Jun 17

United Airlines flights from Portland to South Dakota

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

United Airlines

Apr 11

PDX8:40 amPortland

6h 00m

1 stop

RAP3:40 pmRapid City

Apr 18

RAP12:00 pmRapid City

9h 48m

2 stops

PDX8:48 pmPortland

$284

United Airlines

Jun 3

PDX12:50 pmPortland

5h 23m

1 stop

RAP7:13 pmRapid City

Jun 17

RAP5:00 amRapid City

5h 47m

1 stop

PDX9:47 amPortland

$295

United Airlines

Apr 10

PDX5:00 amPortland

7h 08m

1 stop

RAP1:08 pmRapid City

Apr 13

RAP5:27 amRapid City

5h 21m

1 stop

PDX9:48 amPortland

$299

Delta flights from Portland to South Dakota

Our best Delta deals on Portland to South Dakota flight tickets

Delta

Mar 31

PDX12:30 amPortland

7h 51m

1 stop

FSD10:21 amSioux Falls Joe Foss Field

Apr 8

FSD1:34 pmSioux Falls Joe Foss Field

8h 51m

1 stop

PDX8:25 pmPortland

$251

Delta

Mar 31

PDX12:30 amPortland

7h 51m

1 stop

FSD10:21 amSioux Falls Joe Foss Field

Apr 8

FSD1:34 pmSioux Falls Joe Foss Field

12h 20m

2 stops

PDX11:54 pmPortland

$256

Delta

Mar 31

PDX12:30 amPortland

7h 51m

1 stop

FSD10:21 amSioux Falls Joe Foss Field

Apr 8

FSD1:34 pmSioux Falls Joe Foss Field

8h 51m

1 stop

PDX8:25 pmPortland

$271

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandSioux Falls

PDX - FSD

PDXFSD

Portland

Tue 3/31

12:30 am-10:21 am

1 stop7h 51m

Sioux Falls Joe Foss Field

Wed 4/8

1:34 pm-8:25 pm

1 stop8h 51m

$251

PortlandSioux Falls

PDX - FSD

PDXFSD

Portland

Tue 3/31

12:30 am-10:21 am

1 stop7h 51m

Sioux Falls Joe Foss Field

Wed 4/8

1:34 pm-11:54 pm

2 stops12h 20m

$256

PortlandSioux Falls

PDX - FSD

PDXFSD

Portland

Tue 3/31

12:30 am-10:21 am

1 stop7h 51m

Sioux Falls Joe Foss Field

Wed 4/8

1:34 pm-8:25 pm

1 stop8h 51m

$271

PortlandSioux Falls

PDX - FSD

PDXFSD

Portland

Tue 3/31

12:30 am-10:21 am

1 stop7h 51m

Sioux Falls Joe Foss Field

Wed 4/8

1:34 pm-11:54 pm

2 stops12h 20m

$276

PortlandRapid City

PDX - RAP

PDXRAP

Portland

Sat 4/11

6:05 am-3:18 pm

1 stop8h 13m

Rapid City

Sat 4/18

10:58 am-5:32 pm

1 stop7h 34m

$279

PortlandRapid City

PDX - RAP

PDXRAP

Portland

Sat 4/11

8:40 am-3:40 pm

1 stop6h 00m

Rapid City

Sat 4/18

12:00 pm-8:48 pm

2 stops9h 48m

$284

Quickest round-trip

PortlandRapid City

PDX - RAP

PDXRAP

Portland

Wed 6/3

12:50 pm-7:13 pm

1 stop5h 23m

Rapid City

Wed 6/17

5:00 am-9:47 am

1 stop5h 47m

$295

PortlandSioux Falls

PDX - FSD

PDXFSD

Portland

Wed 4/29

11:56 am-9:54 pm

1 stop7h 58m

Sioux Falls Joe Foss Field

Sun 5/3

5:28 pm-11:54 pm

1 stop8h 26m

$315

PortlandSioux Falls

PDX - FSD

PDXFSD

Portland

Wed 5/13

3:28 pm-11:59 pm

1 stop6h 31m

Sioux Falls Joe Foss Field

Tue 5/19

1:41 pm-9:38 pm

1 stop9h 57m

$324

PortlandRapid City

PDX - RAP

PDXRAP

Portland

Wed 6/3

12:23 pm-9:04 pm

2 stops31h 41m

Rapid City

Wed 6/17

3:31 pm-6:27 pm

1 stop27h 56m

$346

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Portland 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

What is the cheapest month to fly to South Dakota?

The month of August is, on average, the cheapest month to fly to South Dakota from Portland, with most prices found around $293. If you aren’t able to travel to South Dakota during the month of August, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $344.

How far in advance should I book a flight to South Dakota?

You are more likely to see cheaper flights to South Dakota from Portland when booking weeks ahead of your departure date. In general, you can expect to find flights to South Dakota for around $398 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to South Dakota from Portland for as low as $333 on momondo.

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

You could potentially save up to 34% on your flight if you consider stops on a Portland to South Dakota flight.

Cheap Portland to South Dakota flight deals and tips

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

Fastest flight time	5h 10m
Direct flights	None

The fastest flight from Portland to South Dakota takes 5h 10m

There are no direct flights from Portland to South Dakota. There are no popular flight routes from Portland 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 were last updated today.
How many operators does momondo search for flights from Portland Airport to South Dakota?
As of March 2026, there are 4 operators available to choose from for flights from Portland Airport to South Dakota.
How old do you have to be to fly from Portland Airport to South Dakota?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to South Dakota.
What documentation or ID do you need to fly to South Dakota?
The necessary travel and health documents for your South Dakota trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Portland to South Dakota

Compare and see reviews for airlines that fly from Portland to South Dakota with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $170	Free Cancellation	Rating 5.7 3,041 reviews	Search Frontier flights
Delta	PriceFrom $234	Free Cancellation	Rating 7.9 8,258 reviews	Search Delta flights
American Airlines	PriceFrom $259	Free Cancellation	Rating 7.1 11,393 reviews	Search American Airlines flights
United Airlines	PriceFrom $263	Free Cancellation	Rating 7.4 9,403 reviews	Search United Airlines flights

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to South Dakota from Portland.

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

Flights from Portland to South Dakota with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once you have performed a search for Portland to South Dakota flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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.