Cheap flights from Chicago to Sioux City

Chicago FSS
CHI
Sioux Gateway
SUX

Flight deals from Chicago to Sioux City

Below you can see the best deals on flights Chicago — Sioux City for upcoming dates. Direct and connecting flights from various airlines — compare prices and choose the right ticket.

The lowest price for the next 2 months is on 6 October, from $150.

Top 10 cheap flights from Chicago to Sioux City

About the Chicago — Sioux City flight

Looking for cheap flights from Chicago to Sioux City? Compare fares from different airlines, check the flight schedule and travel time — and book your Chicago — Sioux City ticket online at the best price.

The route has direct flights — around 13 flights per week, flights are operated by United Airlines, a nonstop flight takes about 1 h 54 min, the distance between the cities is around 728 km.

Planning your trip? You may find our Sioux City travel guide, how to get from the airport into town and Sioux City weather forecast useful. To catch a low fare, use the low-price calendar and the monthly price chart on this page.

Facts about this route

from $149Min. price
DecemberCheapest
MayPeak season
YesDirect flights
728 kmDistance
1 h 54 minTravel time
1Airlines
13 / wkFlights

Flight schedule from Chicago to Sioux City

The table shows direct flights from Chicago to Sioux City on the selected date. The flight takes approximately 1 h 54 min. Regular flights are operated by United Airlines. Departures from O'Hare International Airport, Chicago Midway International Airport and Midway International Airport airports, arrivals at Sioux Gateway Airport.

For each flight, the following details are shown: departure time (local), arrival city and airport, flight number and airline, terminal or gate, and status. Click on a flight to open its details and go to ticket search. To view flights on a different day, change the date above the table.

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Last update: 01 Sep 2026

Flight ticket prices by day: Chicago — Sioux City

Below is a calendar of the lowest flight ticket prices for Chicago — Sioux City by day. Pick a convenient date and instantly see the fare. The cheapest flights on this route start from $149 in December, and the most expensive are around $315 in May. If your travel dates are flexible, the calendar will help you find the best price for your preferred period. To view round-trip fares, switch to the "Round trip" tab above the calendar, select your departure date — and the right-hand calendar will highlight the lowest prices for return flights on each day.

 
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Prices by month

Average one-way fares from Chicago to Sioux City by month. Tickets are usually cheapest in February (around $168) and priciest in July (about $213) — use the table and chart below to pick the best time to fly.

MonthAverage priceLevelMonthAverage priceLevelMonthAverage priceLevel
Jan$172lowMay$195mediumSep$186medium
Feb$168lowJun$208highOct$181medium
Mar$181mediumJul$213highNov$199high
Apr$186mediumAug$177lowDec$208high

Some values are estimated based on seasonality.

When to fly

Weather in Sioux City: it is warmest in July (up to 30 °C on average) and coolest in January (around -1 °C). The driest month is January.

Tickets are usually cheapest in December and most expensive in May. Compare prices and weather by month in the charts below to pick the best time to fly.

Temperature · Sioux City

Dry and wet days · Sioux City

Wind speed and direction · Sioux City

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How to get the best deal on a Chicago — Sioux City ticket

  • Book ahead: fares for Chicago — Sioux City are usually lower 3–8 weeks before departure than at the last minute.
  • Play with your dates — Tuesday, Wednesday and Saturday departures are often cheaper than Friday and Sunday.
  • Chicago is served by more than one airport — compare fares and travel time to each before you book.
  • The cheapest month to fly to Sioux City is usually December — plan your trip around it if your dates are flexible.
  • Compare direct and connecting flights: nonstop is faster, while a connection is sometimes noticeably cheaper.
  • Watch the low-price calendar and the monthly price trend on this page — they make it easier to catch a good date.
  • Travelling light? Pick a cabin-baggage-only fare — tickets without checked luggage are noticeably cheaper.
  • Get to the airport in good time — about 2–3 hours before an international departure and roughly an hour before a domestic one.

Airlines

Flights on the Chicago — Sioux City route are operated by 1 airline; United Airlines runs the most flights (around 100% of all flights). Compare carriers, flight shares and schedules below.

  • United AirlinesUA
    4x/week
    WebsiteFleet: 956165M pax/year
    • Direct flight ORD → SUX4x/week
    100.0%Open →

Cities and airports on the Chicago — Sioux City route

Flights Chicago — Sioux City depart from O'Hare International Airport, Chicago Midway International Airport, Midway International Airport and Chicago Rockford International Airport and arrive at Sioux Gateway Airport. Below are pages for the cities, countries, and airports on the route: airlines, schedules, and travel guides.

Departure

Chicago

CHI
United States
About the cityHow to get thereWeatherAll about the country United States
Arrival

Sioux City

SUX
United States
About the cityHow to get thereWeatherAll about the country United States
Departure airports
Arrival airports

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Frequently asked questions about the Chicago — Sioux City flight

How long is the flight from Chicago to Sioux City?

A nonstop Chicago — Sioux City flight takes about 1 h 54 min — the distance between the cities is around 728 km.

How far is it from Chicago to Sioux City?

The distance from Chicago to Sioux City is about 728 km, which a nonstop flight covers in around 1 h 54 min.

Are there direct flights from Chicago to Sioux City?

Yes, there are nonstop flights Chicago — Sioux City — around 13 flights per week.

Which airlines fly from Chicago to Sioux City?

Airlines operating Chicago — Sioux City include United Airlines. See the full list with schedules in the "Airlines" section on this page.

Which airports do Chicago — Sioux City flights use?

Flights from Chicago depart from O'Hare International Airport, Chicago Midway International Airport, Midway International Airport, and arrive at Sioux Gateway Airport. If a city has more than one airport, check which one your ticket uses before you travel.

How much is a ticket from Chicago to Sioux City?

The price of a Chicago — Sioux City ticket depends on your travel date, season and demand: it is usually cheapest to fly in December, and most expensive in May. Tickets typically cost between $149 and $315. Check the current lowest fare and low-price calendar on this page.

When is the best time to book flights Chicago — Sioux City?

Flights Chicago — Sioux City are usually cheaper when booked in advance — a few weeks before departure and away from peak dates; the most budget-friendly month to fly is December. Compare prices by month in the price trend chart on this page.

How can I find the cheapest flights from Chicago to Sioux City?

To catch a low fare Chicago — Sioux City, book a few weeks in advance, keep your dates flexible, and compare airlines and connecting options. The low-price calendar and monthly price chart on this page show the cheapest days and months at a glance: the most budget-friendly month to fly is usually December.

How early should I arrive at the airport?

For international flights, plan to be at the airport about 2–3 hours before departure, and around an hour before a domestic flight. Allow extra time during busy travel seasons and at large hubs, where check-in and security lines can be longer.

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