Cheap flights from Sioux City from $158

Our data suggests that currently, the cheapest flights from Sioux City are being offered by United Airlines. For example, United Airlines flights from Sioux City to Denver start at $194.

Currently, the cheapest flight from Sioux City found by our users is for $197 to Chicago O'Hare Intl Airport. Prices will vary according to several factors such as the departure date and time, but on average you can expect to pay around $394 to travel from Sioux City to Chicago O'Hare Intl Airport.

Chicago, Sault Ste. Marie and Denver are currently the destinations served most frequently from Sioux City, with 1, 1 and 1 flights per day on average, respectively.

Airlines including United Airlines frequently fly from Sioux City. You can view other airlines by performing a quick search in the form above.

Prices for flights from Sioux City Sioux Gateway Airport were last updated today.

As of September 2025, there is 1 operator available to choose from for flights from Sioux City Sioux Gateway Airport.

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Sioux City Sioux Gateway Airport.

The travel and health documents required for your trip to Sioux City Sioux Gateway Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Sioux City Sioux Gateway Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.