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$323+ Cheap flights from Sioux Falls to Portland, ME (FSD - PWM)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/18. Fares are subject to change and may not be available on all flights or dates of travel.
FSD — PWM
Jun 11 — Jun 181
Thu 6/11
Thu 6/18
1 adult, Economy
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Cheap flight deals from Sioux Falls to Portland

Cheapest flights from Sioux Falls to Portland
Explore the most affordable flight options available from Sioux Falls to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 12, 2026.

This United Airlines deal was found by Cheapflights users on 5/10. 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.
Tue 8/187:47 am
FSD
-
PWM
1 stop5h 47m
United Airlines
Tue 8/255:03 pm
PWM
-
FSD
1 stop6h 49m
United Airlines
Deal found 5/10$323
This Delta deal was found by Cheapflights users on 5/10. 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 9/96:25 am
FSD
-
PWM
2 stops8h 50m
Delta
Wed 9/166:00 am
PWM
-
FSD
2 stops10h 28m
Delta
Deal found 5/10$333
This United Airlines deal was found by Cheapflights users on 5/10. 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.
Sat 8/157:47 am
FSD
-
PWM
2 stops10h 30m
United Airlines
Sat 8/225:03 pm
PWM
-
FSD
1 stop6h 49m
United Airlines
Deal found 5/10$356
This American Airlines deal was found by Cheapflights users on 5/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/156:25 am
FSD
-
PWM
1 stop8h 02m
American Airlines
Sat 8/226:47 am
PWM
-
FSD
1 stop5h 50m
American Airlines
Deal found 5/10$376
This American Airlines deal was found by Cheapflights users on 5/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/56:25 am
FSD
-
PWM
1 stop8h 02m
American Airlines
Sat 9/129:01 am
PWM
-
FSD
2 stops9h 21m
American Airlines
Deal found 5/11$381
This American Airlines deal was found by Cheapflights users on 5/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/27:30 am
FSD
-
PWM
2 stops13h 30m
American Airlines
Wed 9/98:01 am
PWM
-
FSD
2 stops10h 21m
American Airlines
Deal found 5/10$386
This Delta deal was found by Cheapflights users on 5/10. 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.
Fri 6/125:24 am
FSD
-
PWM
1 stop6h 36m
Delta
Wed 6/171:55 pm
PWM
-
FSD
1 stop7h 04m
Delta
Deal found 5/10$391
This United Airlines deal was found by Cheapflights users on 5/10. 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 9/27:47 am
FSD
-
PWM
2 stops10h 37m
United Airlines
Wed 9/95:05 pm
PWM
-
FSD
1 stop5h 47m
United Airlines
Deal found 5/10$403
This American Airlines deal was found by Cheapflights users on 5/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/104:40 pm
FSD
-
PWM
1 stop7h 02m
American Airlines
Wed 6/177:28 pm
PWM
-
FSD
1 stop5h 52m
American Airlines
Deal found 5/10$409
This United Airlines deal was found by Cheapflights users on 5/8. 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.
Sat 8/297:47 am
FSD
-
PWM
2 stops10h 30m
United Airlines
Wed 9/25:03 pm
PWM
-
FSD
1 stop6h 49m
United Airlines
Deal found 5/8$418

Find flight deals from Sioux Falls to Portland

Discover tips and strategies to find the most affordable flight options for your journey from Sioux Falls (FSD) to Portland (PWM). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$323
(United Airlines)

Popular in

January

Cheapest in

November

Average price

$413
Provider with most accurate pricing for Sioux Falls Joe Foss Field-Portland flight deals.
Search Deals
Provider most trusted by Cheapflights users for Sioux Falls Joe Foss Field-Portland flights.
Search Deals
From Sioux Falls Joe Foss Field to Portland
Search Deals
Highest demand for flights based on searches. 42% potential increase in price ($399 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease ($42 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sioux Falls 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 May 12, 2026.
Use the filters below to find and compare flights from Sioux Falls to Portland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Sioux FallsPortland

FSD - PWM

FSDPWM

Sioux Falls Joe Foss Field

Fri 6/12

5:24 am-1:00 pm

1 stop6h 36m

Portland

Wed 6/17

11:02 am-7:59 pm

2 stops9h 57m

$396

Sioux FallsPortland

FSD - PWM

FSDPWM

Sioux Falls Joe Foss Field

Sat 8/29

7:47 am-7:17 pm

2 stops10h 30m

Portland

Wed 9/2

5:03 pm-10:52 pm

1 stop6h 49m

$418

Sioux FallsPortland

FSD - PWM

FSDPWM

Sioux Falls Joe Foss Field

Sat 8/15

7:47 am-7:17 pm

2 stops10h 30m

Portland

Sat 8/22

5:15 am-4:23 pm

2 stops12h 08m

$423

Sioux FallsPortland

FSD - PWM

FSDPWM

Sioux Falls Joe Foss Field

Wed 9/2

7:30 am-10:00 pm

2 stops13h 30m

Portland

Tue 9/8

6:12 pm-12:31 am

1 stop7h 19m

$434
Quickest round-trip

Sioux FallsPortland

FSD - PWM

FSDPWM

Sioux Falls Joe Foss Field

Wed 9/2

7:47 am-2:34 pm

1 stop5h 47m

Portland

Tue 9/8

5:05 pm-9:52 pm

1 stop5h 47m

$466

Sioux FallsPortland

FSD - PWM

FSDPWM

Sioux Falls Joe Foss Field

Tue 9/1

7:47 am-2:34 pm

1 stop5h 47m

Portland

Tue 9/8

5:05 pm-9:52 pm

1 stop5h 47m

$466
Cheapest one-way
Quickest one-way

Sioux FallsPortland

FSD - PWM

FSDPWM

Sioux Falls Joe Foss Field

Tue 10/20

5:59 pm-11:33 am

1 stop16h 34m

$327

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/12

Sorted by cheapest first

Compare providers for flights from Sioux Falls to Portland

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Sioux Falls to Portland in May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Sioux Falls-Portland, Maine flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Sioux Falls-Portland, Maine flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Sioux Falls-Portland, Maine flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Sioux Falls-Portland, Maine flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Sioux Falls-Portland, Maine flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Sioux Falls to Portland

Have a flexible travel schedule? Discover the best time to fly to Portland from Sioux Falls 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 Sioux Falls to Portland

How much does it cost to fly round-trip from Sioux Falls to Portland, Maine?

Reviews of airlines servicing Portland

Get insights into the airlines that provide service to Portland. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Portland. Reviews last updated May 12, 2026.
See what other customers who have flown with Delta,United Airlines, andAmerican Airlines from Sioux Falls to Portland have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,446 reviews

Entertainment

7.8

Boarding

8.1

Food

7.2

Overall

7.9

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Delta
7.9
Good
8,446 reviews
Delta
7.9
Good
8,446 reviews

Entertainment

7.8

Boarding

8.1

Food

7.2

Overall

7.9

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
United Airlines
7.4
Good
9,701 reviews
Delta
7.9
Good
8,446 reviews

Entertainment

7.8

Boarding

8.1

Food

7.2

Overall

7.9

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
American Airlines
7.1
Good
11,661 reviews
Delta
7.9
Good
8,446 reviews

Entertainment

7.8

Boarding

8.1

Food

7.2

Overall

7.9

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

Related info for your journey

Find useful and relevant information for your journey from Sioux Falls to Portland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Sioux Falls to Portland, Maine?

    For as low as $396, Delta can have you in Portland, Maine from Sioux Falls in 6h 36m. Airlines will cover a distance of 1316 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Sioux Falls to Portland, Maine round-trip?

    Delta, at $164, was found to be the cheapest airline from Sioux Falls to Portland, Maine.Alternate airlines to your destination round-trip include American Airlines and United Airlines. Delta is currently priced 69% below the average price you’ll pay for this route.

  • Can I find deals for flights from Sioux Falls to Portland that include hotel bookings?

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

  • How can I find direct flights from Sioux Falls to Portland?

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

  • Can I find deals for business class flights from Sioux Falls to Portland?

    Yes. Cheapflights offers flight deals from Sioux Falls 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.

See more FAQs

Traveling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
North Conway
Brunswick
Lewiston
Conway

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Alternative routes for Sioux Falls to Portland

See prices for flight routes from nearby airports that may be better suited for you.
Sioux Falls to Boston flights
Rapid City to Boston flights

Top 3 airlines flying from Sioux Falls to Portland

Discover the top 3 airlines that operate flights from Sioux Falls 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 May 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$164Average$339FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$268Average$446FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$306Average$440FlexibilityNo cancel feeOn-time69%

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