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Sioux City

$334+ Cheap flights from Portland to Sioux City (PDX - SUX)

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 9/26. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SUX
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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Cheap flight deals from Portland to Sioux City

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) to Sioux City (SUX). 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 August 14, 2025.

Round-trip from

$334
(United Airlines)

Popular in

November

Cheapest in

January

Average price

$497
From Portland to Sioux City Sioux Gateway
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($55 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($23 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2025
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Find flight deals from Portland to Sioux City

Cheapest flights from Portland to Sioux City
Explore the most affordable flight options available from Portland to Sioux City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

This United Airlines deal was found by Cheapflights users on 8/14. 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.
Fri 8/292:15 pmPDX - SUX
1 stop6h 42mUnited Airlines
Tue 9/26:48 pmSUX - PDX
1 stop16h 40mUnited Airlines
Deal found 8/14$515
This United Airlines deal was found by Cheapflights users on 8/12. 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 8/2710:55 amPDX - SUX
1 stop5h 18mUnited Airlines
Sat 8/306:48 pmSUX - PDX
1 stop28h 13mUnited Airlines
Deal found 8/12$535

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland to Sioux City 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 August 14, 2025.
Use the filters below to find and compare flights from Portland to Sioux City that are best for you.

Fly from

Portland

Fly to

Sioux City

Route

Depart

Return

Price

PortlandSioux City

PDX - SUX

PDXSUX

Portland

Fri 9/26

2:15 pm-11:00 pm

1 stop6h 45m

Sioux City Sioux Gateway

Mon 9/29

6:51 pm-10:45 pm

1 stop5h 54m

$334

PortlandSioux City

PDX - SUX

PDXSUX

Portland

Sat 9/27

8:35 am-6:14 pm

1 stop7h 39m

Sioux City Sioux Gateway

Mon 9/29

6:51 pm-10:45 pm

1 stop5h 54m

$334

PortlandSioux City

PDX - SUX

PDXSUX

Portland

Fri 8/29

2:15 pm-10:57 pm

1 stop6h 42m

Sioux City Sioux Gateway

Tue 9/2

6:48 pm-9:28 am

1 stop16h 40m

$515

PortlandSioux City

PDX - SUX

PDXSUX

Portland

Wed 8/27

2:15 pm-10:57 pm

1 stop6h 42m

Sioux City Sioux Gateway

Sat 8/30

6:48 pm-9:28 am

1 stop16h 40m

$535

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/14

Best time to book a flight from Portland to Sioux City

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

What is the cheapest month to book a flight from Portland to Sioux City?

Currently, October is the cheapest month in which you can book a flight from Portland to Sioux City (average of $318). Flying from Portland to Sioux City in March is currently the most expensive (average of $446). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from PDX to SUX?

Find hourly flight availability from Portland to Sioux City. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 14, 2025.

When flying from Portland to Sioux City, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Sioux City

Get insights into the airlines that provide service to Sioux City. 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 Sioux City. Reviews last updated August 14, 2025.
Read through reviews of airlines operating flights from Portland to Sioux City, such as United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,916 reviews

Boarding

7.7

Overall

7.4

Entertainment

7.1

Comfort

7.3

Crew

8.1

Food

6.6

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
United Airlines
7.4
Good
8,916 reviews
United Airlines
7.4
Good
8,916 reviews

Boarding

7.7

Overall

7.4

Entertainment

7.1

Comfort

7.3

Crew

8.1

Food

6.6

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

Related info for your journey

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

  • What is the cheapest airline to fly from Portland to Sioux City round-trip?

    According to our current data, United Airlines ($278), offers the cheapest pricing from Portland to Sioux City. This flight start at 41% lower than the current average price 3 months from now.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Portland to Sioux City by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Portland to Sioux City?

    Currently, October is the cheapest month in which you can book a flight from Portland to Sioux City (average of $318). Flying from Portland to Sioux City in March is currently the most expensive (average of $446). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Sioux City?

Book flights to Sioux City if you plan to visit one of these locations
Norfolk

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Top airline flying from Portland to Sioux City

Discover the top airline that operate flights from Portland to Sioux City. 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 August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$278Average$462FlexibilityNo cancel feeOn-time69%

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