Cheap Flights from Sioux City (SUX) to Duluth (DLH)

Popular airlines from Sioux City, IA (SUX-Sioux Gateway) to Duluth, MN (DLH-Duluth Intl.)

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Cheap Flights from Sioux City to Duluth (SUX-DLH)

Prices were available within the past 7 days and start at for one-way flights and $924 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, Oct 8 - Sun, Oct 12
SUX
Sioux City
DLH
Duluth
$924 Roundtrip, found 3 days ago
$924
Roundtrip
found 3 days ago
Select United flight, departing Wed, Oct 8 from Sioux City to Duluth, returning Sun, Oct 12, priced at $924 found 3 days ago
United
Wed, Oct 8 - Sun, Oct 12
SUX
Sioux City
DLH
Duluth
$1,004 Roundtrip, found 3 days ago
$1,004
Roundtrip
found 3 days ago
Select United flight, departing Wed, Oct 8 from Sioux City to Duluth, returning Sun, Oct 12, priced at $1,004 found 3 days ago
United
Wed, Oct 8 - Sun, Oct 12
SUX
Sioux City
DLH
Duluth
$1,131 Roundtrip, found 3 days ago
$1,131
Roundtrip
found 3 days ago
Select United flight, departing Wed, Oct 8 from Sioux City to Duluth, returning Sun, Oct 12, priced at $1,131 found 3 days ago
United
Wed, Oct 8 - Sun, Oct 12
SUX
Sioux City
DLH
Duluth
$1,216 Roundtrip, found 3 days ago
$1,216
Roundtrip
found 3 days ago
Select United flight, departing Wed, Oct 8 from Sioux City to Duluth, returning Sun, Oct 12, priced at $1,216 found 3 days ago
United
Wed, Oct 8 - Sun, Oct 12
SUX
Sioux City
DLH
Duluth
$1,460 Roundtrip, found 3 days ago
$1,460
Roundtrip
found 3 days ago
Select United flight, departing Wed, Oct 8 from Sioux City to Duluth, returning Sun, Oct 12, priced at $1,460 found 3 days ago

Frequently asked questions

How much does a flight from Sioux Gateway Airport (SUX) to Duluth Intl. Airport (DLH) cost?
Secure a cheap one-way flight or cheap return flight from $924 from Sioux Gateway Airport (SUX) to Duluth Intl. Airport (DLH) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Sioux Gateway Airport (SUX) to Duluth Intl. Airport (DLH)?
October is the least expensive month to fly from SUX to DLH. Timing your trip outside of the busy season is often the key to finding a great deal.
What is the cheapest airline that flies from Sioux Gateway Airport (SUX) to Duluth Intl. Airport (DLH)?
Expedia's filter tool lets you easily compare travel time, airlines and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest SUX to DLH flight.
How many flights per day from Sioux Gateway Airport (SUX) to Duluth Intl. Airport (DLH)?
There are no daily nonstop flights departing from Sioux Gateway Airport (SUX) to Duluth Intl. Airport (DLH). But you can choose flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be on your way in no time.
What day of the week has the most flights from SUX to DLH?
Generally you'll find the widest variety of flight choices on a Friday. Tuesdays are often the quietest.* But this can change depending on the time of year, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Sioux Gateway Airport (SUX) to Duluth Intl. Airport (DLH)?
To arrive at Duluth Intl. Airport (DLH) on time, select a flight that takes off from Sioux Gateway Airport (SUX) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Sioux Gateway Airport (SUX) to Duluth Intl. Airport (DLH) last-minute?
Booking your plane ticket from SUX to DLH just before your trip is usually more expensive. But if there's some wiggle room with your travel dates and times, you could snag a cheap last-minute fare.
Is it cheaper to book a SUX to DLH flight and hotel package?
Opting for a SUX to DLH flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip in one place. Choose from our impressive range of hotels and then add car rentals, flights and activities 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 Gateway Airport (SUX) to Duluth Intl. Airport (DLH)?
You can usually cancel or reschedule your SUX to DLH flight. However, for bookings made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Travel information

Origin airport
Sioux Gateway
Destination airport
Duluth Intl.
Roundtrip price
$924
Distance
369 mi

Book with confidence

Book with confidence

Sioux City to Duluth Flights

The cheapest times to fly from Sioux City to Duluth

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 Duluth are during the month of October. You can find some of the cheapest flights from Sioux City to Duluth with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Sioux City to Duluth: 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 Duluth

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 Duluth in 2025. You can also book with separate airlines for your outbound and return journeys, from 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 Duluth 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 Duluth 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 Duluth Flights

Explore a world of travel with Expedia

Explore a world of travel with Expedia

*Available to One Key members.