PDX - SUX

$315 Find Cheap Flights from Portland to Sioux City

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Portland to Sioux City departing on 8/25. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Sioux City

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Portland to Sioux City, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Portland to Sioux City, as well as popular online travel agencies
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Cheap Flights from Portland to Sioux City (PDX-SUX)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Portland to Sioux City that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Portland to Sioux City

Wed, Aug 27 - Sat, Aug 30
United Airlines Logo
2:15 pm - 10:57 pmPDX-SUX
6h 42m1 stop
United Airlines Logo
7:49 am - 3:25 pmSUX-PDX
9h 36m1 stop
$334United Airlines
Find Deal
Wed, Aug 27 - Sat, Aug 30
United Airlines Logo
8:35 am - 10:57 pmPDX-SUX
12h 22m2 stops
United Airlines Logo
7:49 am - 3:25 pmSUX-PDX
9h 36m1 stop
$424United Airlines
Find Deal
Wed, Aug 27 - Sat, Aug 30
United Airlines Logo
10:55 am - 6:13 pmPDX-SUX
5h 18m1 stop
United Airlines Logo
7:49 am - 10:23 pmSUX-PDX
40h 34m3 stops
$509United Airlines
Find Deal
Wed, Aug 27 - Sat, Aug 30
United Airlines Logo
3:44 pm - 6:13 pmPDX-SUX
24h 29m2 stops
United Airlines Logo
6:48 pm - 8:51 amSUX-PDX
16h 03m2 stops
$525United Airlines
Find Deal
Booking Insights

KAYAK's insights & trends for Portland to Sioux City flights

Get data-powered insights and trends into flights from Portland to Sioux City to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Portland to Sioux City?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Portland to Sioux City, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Portland to Sioux City is January, where tickets cost $328 (return) on average. On the other hand, the most expensive months are November and March, where the average cost of round-trip tickets is $706 and $638 respectively.

Good to know

Low seasonOctober
Cheapest flight$315
Best time to beat the crowds with an average 22% drop in price.
Most popular time to fly and prices are also 32% lower on average.
Flight from Portland to Sioux City

When to book flights from Portland to Sioux City

Are your dates flexible? Find out the best times to travel from Portland to Sioux City based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Portland to Sioux City

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

    In the last 3 days, the lowest price for a flight from Portland to Sioux City was $315 for a one-way ticket and $334 for a round-trip.

  • Do I need a passport to fly between Portland and Sioux City?

    No

  • Which airports will I be using when flying from Portland to Sioux City?

    Portland and Sioux City are both served by 1 main airport. You will leave Portland from Portland and will be arriving at Sioux City Sioux Gateway.

  • Which aircraft models fly most regularly from Portland to Sioux City?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Portland to Sioux City?

    Star Alliance is the only airline alliance operating flights between Portland and Sioux City.

  • How does KAYAK find such low prices on flights from Portland to Sioux City?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Portland to Sioux City.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Portland to Sioux City?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Sioux City from Portland is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Portland to Sioux City?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Sioux City with an airline and back to Portland with another airline. Booking your flights between Portland and SUX can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Portland to Sioux City?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Sioux City from Portland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Portland to Sioux City

 
See real verified KAYAK customer reviews for airlines flying from Portland to Sioux City. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Portland to Sioux City? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 8900 reviews
7.3Comfort
8.1Crew
7.7Boarding
6.6Food
7.1Entertainment
Airline reviews

Terrible. Delayed 7 hours, and cancelled the flight, leaving me stranded and out of pocket $500 for an alternative last minute flight

2.0 MediocreV, Jul 2025MIA - EWR
Read more United Airlines reviews

Terrible. Delayed 7 hours, and cancelled the flight, leaving me stranded and out of pocket $500 for an alternative last minute flight

Was on time until within 1 hour of flight-how does that happen? Staff very friendly.

Weather delay in Chicago?. No sense of urgency to make connection in Chicago for our connecting flight that wasn't delayed. Connection was missed.

Our flight was understandably diverted to a small regional airport in Laramie, Wyoming due to weather conditions, which I fully recognize and appreciate. However, the low rating stems from the experience that followed: passengers remained on board for over an hour without the option to deplane and stretch, despite the aircraft being stationary. Although the pilot opened the cabin door, only he was permitted to exit. Meanwhile, passengers grew increasingly uncomfortable as warm summer air entered the cabin through the open door, and being in the second row meant we were impacted immediately. While the flight attendants made efforts to keep everyone at ease, I believe allowing passengers to deplane briefly, given the extended delay, would have significantly improved the overall experience.

I never flew. Flight was canceled. DIA worst airport in the country. Avoid at all costs.

I learned that seating towards the end of plane that a line forms for the restroom and people use your chair as a hand railing, bumping your seat consistently. I was seated in the aisle. I think that next time if I am towards the back row I would want to sit in the middle or window seat.

United sent me a mileage plus number last year but that number is invalid so I can’t use it to check into flights or collect mileage. There is human to speak about the problem, only computers who keep asking me if I am using the correct email. It’s so frustrating and I cannot resolve it.

It was delayed instead of departing at 9:20pm, we departed at 11pm… putting us in Columbus after 2am! It was awful. Had I known about the delay, I could have spent some time in the United Lounge… I was starving because I started my journey in Budapest… so I was exhausted and hungry. Plus I had to make new arrangements to be picked up at the airport in Columbus, instead of midnight it was 2:30 am after getting luggage and out of airport. Not feasible. I would have just stayed in Chicago for the night and gotten a morning flight.

Not a great experience. We paid for the upgrade for premium economy seats and seated ourselves in very comfortable seats. Someone came along with the same seat on their boarding pass. The aircraft had been changed and as a result we were booted out and sent further back to small uncomfortable seats. After complaining we were moved to emergency row seats, which gave us more leg room but the seats don’t recline. For people in our 70’s we found having to sit upright from California to NJ very uncomfortable. Not sure why they chose to move senior citizens instead of the two people that were allowed to take the more comfortable seats. Not happy.

I liked the choice of lemon ginger tea. I think stewardesses can be more considerate of older people needs.

Everything you need to know for your flight from Portland to Sioux City

Information on your arrival and departure airports

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