Cheap flights from Denver to Sioux City

One-way fares from $223 · DEN → SUX · prices found by travellers in the last 48 hours

Compare all dates Sioux City → Denver
Cheapest fare
$223

United Airlines · Fri, Nov 13

Cheapest month
November

from $223

Direct flights
Yes

United Airlines

Flight time
1h 38m

780 km

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Cheapest month to fly from Denver to Sioux City

Lowest one-way fare per person in each month. Choose a month to see every date.

  1. November 2026 Cheapest $223

Cheapest dates in November 2026

The lowest fares we've seen for each day, cheapest first.

United Airlines
Depart21:05 Fri, Nov 13DEN → SUX 1h 38m · Direct
$223one way, per person
View deal
United Airlines
Depart21:05 Sat, Nov 14DEN → SUX 1h 38m · Direct
$223one way, per person
View deal
See every date in November 2026 →

Plan the rest of your trip to Sioux City

Where to stay, what to do and getting around, from our travel partners.

Where to stay

Hotels in Sioux CityCompare places to stay on Booking.com Find hotels →

Things to do

Things to do in Sioux CityTours, attractions and day trips on Klook Explore →

Getting around

Airport transfer in Sioux CityPre-book a driver to meet you at arrivals, with Kiwitaxi Book a transfer → Car hire in Sioux CityCompare rental cars from major brands on EconomyBookings Compare cars →

About flights from Denver to Sioux City

Denver (DEN) and Sioux City (SUX) are about 780 km apart. Direct flights take around 1h 38m, and recent direct fares were with United Airlines. Over the next few months, one-way fares start from $223, and November 2026 is currently the cheapest month to fly.

These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.

Frequently asked questions

How much is a flight from Denver to Sioux City?

The cheapest one-way fare we've seen recently is $223 with United Airlines, departing Friday, November 13, 2026.

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

November 2026 currently has the lowest fares, from $223 one way.

Are there direct flights from Denver to Sioux City?

Yes. Recent direct fares were with United Airlines.

How long is the flight from Denver to Sioux City?

A direct flight takes about 1h 38m. Denver and Sioux City are around 780 km apart.

Which airlines fly from Denver to Sioux City?

Recent fares on this route were with United Airlines.

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