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$321 Cheap Flights from Sioux City (SUX) to Eugene (EUG)

View $321 flight on Sat, May 8, 2027Opens in a new window

Popular airlines from Sioux City, IA (SUX-Sioux Gateway) to Mahlon Sweet Field Airport (EUG)

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Cheap Flights from Sioux City to Eugene (SUX-EUG)

Prices were available within the past 7 days and start at $321 for one-way flights and $1,069 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Mon, Oct 12 - Thu, Oct 15
SUX
Sioux City
EUG
Eugene
$1,069 Roundtrip, found 2 days ago
$1,069
Roundtrip
found 2 days ago
Select United flight, departing Mon, Oct 12 from Sioux City to Eugene, returning Thu, Oct 15, priced at $1,069 found 2 days ago
United
Mon, Oct 12 - Thu, Oct 15
SUX
Sioux City
EUG
Eugene
$1,103 Roundtrip, found 2 days ago
$1,103
Roundtrip
found 2 days ago
Select United flight, departing Mon, Oct 12 from Sioux City to Eugene, returning Thu, Oct 15, priced at $1,103 found 2 days ago
United
Mon, Oct 12 - Thu, Oct 15
SUX
Sioux City
EUG
Eugene
$1,109 Roundtrip, found 2 days ago
$1,109
Roundtrip
found 2 days ago
Select United flight, departing Mon, Oct 12 from Sioux City to Eugene, returning Thu, Oct 15, priced at $1,109 found 2 days ago
United
Mon, Oct 12 - Thu, Oct 15
SUX
Sioux City
EUG
Eugene
$1,136 Roundtrip, found 2 days ago
$1,136
Roundtrip
found 2 days ago
Select United flight, departing Mon, Oct 12 from Sioux City to Eugene, returning Thu, Oct 15, priced at $1,136 found 2 days ago
United
Mon, Oct 12 - Thu, Oct 15
SUX
Sioux City
EUG
Eugene
$1,142 Roundtrip, found 2 days ago
$1,142
Roundtrip
found 2 days ago
Select United flight, departing Mon, Oct 12 from Sioux City to Eugene, returning Thu, Oct 15, priced at $1,142 found 2 days ago
United
Thu, Oct 22 - Sun, Oct 25
SUX
Sioux City
EUG
Eugene
$1,155 Roundtrip, found 6 days ago
$1,155
Roundtrip
found 6 days ago
Select United flight, departing Thu, Oct 22 from Sioux City to Eugene, returning Sun, Oct 25, priced at $1,155 found 6 days ago
United
Mon, Oct 12 - Thu, Oct 15
SUX
Sioux City
EUG
Eugene
$1,174 Roundtrip, found 2 days ago
$1,174
Roundtrip
found 2 days ago
Select United flight, departing Mon, Oct 12 from Sioux City to Eugene, returning Thu, Oct 15, priced at $1,174 found 2 days ago
United
Mon, Oct 12 - Thu, Oct 15
SUX
Sioux City
EUG
Eugene
$1,193 Roundtrip, found 2 days ago
$1,193
Roundtrip
found 2 days ago
Select United flight, departing Mon, Oct 12 from Sioux City to Eugene, returning Thu, Oct 15, priced at $1,193 found 2 days ago
United
Mon, Oct 12 - Thu, Oct 15
SUX
Sioux City
EUG
Eugene
$1,210 Roundtrip, found 2 days ago
$1,210
Roundtrip
found 2 days ago
Select United flight, departing Mon, Oct 12 from Sioux City to Eugene, returning Thu, Oct 15, priced at $1,210 found 2 days ago
United
Mon, Oct 12 - Thu, Oct 15
SUX
Sioux City
EUG
Eugene
$1,231 Roundtrip, found 2 days ago
$1,231
Roundtrip
found 2 days ago
Select United flight, departing Mon, Oct 12 from Sioux City to Eugene, returning Thu, Oct 15, priced at $1,231 found 2 days ago

Frequently asked questions

How much does a flight from Sioux City, IA (SUX-Sioux Gateway) to Eugene, OR (EUG) cost?
You can find cheap one-way flights from $321 and cheap return flights from $1,069 SUX to EUG with Expedia. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see our cheapest fares first, and use the Price Tracking tool to receive alerts when SUX to EUG ticket fares go up or down.
What is the cheapest month to fly from Sioux City, IA (SUX-Sioux Gateway) to Eugene, OR (EUG)?
The cheapest month to fly from SUX to EUG is October when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Sioux City, IA (SUX-Sioux Gateway) to Eugene, OR (EUG)?
Enter SUX to EUG and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Sioux City, IA (SUX-Sioux Gateway) to Eugene, OR (EUG)?
United is the only carrier that flies from Sioux City, IA (SUX) to Eugene, OR (EUG). Use Expedia's flight search tool to compare airlines on this route and find our cheapest option for your trip. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Sioux City, IA (SUX-Sioux Gateway) to Eugene, OR (EUG)?
To find a cheap flight from Sioux City, IA (SUX-Sioux Gateway) to Eugene, OR (EUG), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Sioux City, IA (SUX-Sioux Gateway) to Eugene, OR (EUG)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
What is the earliest flight from Sioux City, IA (SUX-Sioux Gateway) to Eugene, OR (EUG)?
The earliest flight from Sioux City (SUX) to Eugene (EUG) typically departs at around 7:50 AM local time, operated by United or Alaska Airlines. This is a seasonal service active in September. An early departure can help you make the most of your time in Eugene. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Sioux City, IA (SUX-Sioux Gateway) to Eugene, OR (EUG)?
You'll usually find the most flights from Sioux Gateway (SUX) to Mahlon Sweet Field (EUG) on a Thursday, with around 1 flights available. This gives you plenty of options for your travel plans. A major airline on this route is United.
What are the most popular departure times for flights from Sioux City, IA (SUX-Sioux Gateway) to Eugene, OR (EUG)?
The most popular departure times for flights from Sioux City (SUX) to Eugene (EUG) are in the early morning, from 6am to 9am. This accounts for about 100% of total traffic, meaning all flights from Sioux City to Eugene leave during this time. United Airlines operates these flights, making it a convenient option for early risers looking to maximize their day.
How long does it take to fly from Sioux City, IA (SUX-Sioux Gateway) to Eugene, OR (EUG)?
Flights from SUX to EUG with one stop typically take around 9 hours 20 minutes, covering approximately 1,349 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Sioux City, IA (SUX-Sioux Gateway) to Eugene, OR (EUG)?
Select the "Business class" and "First class" filters when looking for SUX to EUG flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Sioux City, IA (SUX-Sioux Gateway) to Eugene, OR (EUG) flight with Expedia?
It's easy to earn miles on a Sioux City, IA (SUX-Sioux Gateway) to Eugene, OR (EUG) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Eugene from Sioux Gateway (SUX)?
If you're planning to travel to Eugene from Sioux Gateway (SUX), you can fly into Mahlon Sweet Field (EUG) Some flights may connect through major hubs like O'Hare Intl. (ORD) before reaching Eugene. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Sioux City, IA (SUX-Sioux Gateway) to Eugene, OR (EUG) at the last minute?
Typically, booking a last minute flight from Sioux City, IA (SUX-Sioux Gateway) to Eugene, OR (EUG) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Sioux City, IA (SUX-Sioux Gateway) to Eugene, OR (EUG) flight and hotel package?
Securing a Sioux City, IA (SUX-Sioux Gateway) to Eugene, OR (EUG) Eugene Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Sioux City, IA (SUX-Sioux Gateway) to Eugene, OR (EUG)?
If you booked your Sioux City, IA (SUX-Sioux Gateway) to Eugene, OR (EUG) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Sioux Gateway
Destination airport
Eugene
Roundtrip price
$1,068
Distance
1349 mi

Book with confidence

Sioux City to Eugene Flights

The cheapest times to fly from Sioux City to Eugene

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Sioux City to Eugene are during the month of October. You can find some of the cheapest flights from Sioux City to Eugene with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Sioux City to Eugene

Sunday is one of the best days to book for cheap flights from Sioux City to Eugene: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Sioux City to Eugene

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Sioux City to Eugene in 2026. You can also book with separate airlines for your outbound and return journeys, from $321 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Sioux City to Eugene flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Sioux City to Eugene airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Sioux City to Eugene Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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