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$324+ 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 1/21. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SUX
Feb 7 — Feb 141
Sat 2/7
Sat 2/14
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 January 8, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$324
(United Airlines)
Provider with most accurate pricing for Portland-Sioux City Sioux Gateway flight deals.
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Provider most trusted by Cheapflights users for Portland-Sioux City Sioux Gateway flights.
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From Portland to Sioux City Sioux Gateway
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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 January 8, 2026.

This United Airlines deal was found by Cheapflights users on 1/6. 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 1/217:00 amPDX - SUX
1 stop8h 28mUnited Airlines
Sun 1/256:00 amSUX - PDX
1 stop5h 45mUnited Airlines
Deal found 1/6$324
This United Airlines deal was found by Cheapflights users on 1/7. 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 2/217:00 amPDX - SUX
1 stop8h 41mUnited Airlines
Sat 2/286:46 pmSUX - PDX
1 stop16h 56mUnited Airlines
Deal found 1/7$412
This United Airlines deal was found by Cheapflights users on 1/6. 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 1/133:45 pmPDX - SUX
1 stop6h 02mUnited Airlines
Sat 1/176:00 amSUX - PDX
1 stop5h 45mUnited Airlines
Deal found 1/6$474
This United Airlines deal was found by Cheapflights users on 1/7. 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 7/36:59 pmPDX - SUX
1 stop13h 40mUnited Airlines
Fri 7/176:54 pmSUX - PDX
1 stop14h 56mUnited Airlines
Deal found 1/7$540

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 January 8, 2026.
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

Thu 1/22

3:45 pm-11:47 pm

1 stop6h 02m

Sioux City Sioux Gateway

Mon 1/26

12:45 pm-6:56 pm

1 stop8h 11m

$324

PortlandSioux City

PDX - SUX

PDXSUX

Portland

Wed 1/21

7:00 am-5:28 pm

1 stop8h 28m

Sioux City Sioux Gateway

Sun 1/25

6:00 am-9:45 am

1 stop5h 45m

$324

PortlandSioux City

PDX - SUX

PDXSUX

Portland

Sat 2/21

7:00 am-5:41 pm

1 stop8h 41m

Sioux City Sioux Gateway

Sat 2/28

6:46 pm-9:42 am

1 stop16h 56m

$412

PortlandSioux City

PDX - SUX

PDXSUX

Portland

Fri 7/3

6:59 pm-10:39 am

1 stop13h 40m

Sioux City Sioux Gateway

Fri 7/17

6:54 pm-7:50 am

1 stop14h 56m

$540

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/7

Compare providers for flights from Portland to Sioux City

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 Portland to Sioux City in January.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice 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 Portland-Sioux City flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Portland-Sioux City flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Portland-Sioux City flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Portland-Sioux City flights, Cheapflights users trust eDreams the most. eDreams 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 Portland-Sioux City 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 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, February is the cheapest month in which you can book a flight from Portland to Sioux City (average of $118). Flying from Portland to Sioux City in December is currently the most expensive (average of $335). 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.

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 January 8, 2026.
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
9,139 reviews

Boarding

7.7

Entertainment

7.1

Food

6.6

Comfort

7.3

Crew

8.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.
United Airlines
7.4
Good
9,139 reviews
United Airlines
7.4
Good
9,139 reviews

Boarding

7.7

Entertainment

7.1

Food

6.6

Comfort

7.3

Crew

8.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.

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.

  • How long is the flight from Portland to Sioux City?

    For as low as $324, United Airlines can have you in Sioux City from Portland in 6h 02m. Airlines will cover a distance of 1314 mi.

  • 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, February is the cheapest month in which you can book a flight from Portland to Sioux City (average of $118). Flying from Portland to Sioux City in December is currently the most expensive (average of $335). 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.

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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 January 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$333Average$491FlexibilityNo cancel feeOn-time69%

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