SUX

$163 Find Cheap Flights to Sioux City - Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$224
Typical prices: $303-$572
United Airlines
Mon 10/8Thu 10/11
ORD - SUX • Non-stop
Cheapest non-stop
$224
Typical prices: $232-$443
United Airlines
Tue 10/2Mon 10/8
ORD - SUX • Non-stop
Nonstop flights
Every day
You can fly direct with United Airlines. Average duration is 1h 45m
FAQs
FAQs
Top airlines
United Airlines
Most flights • 14 per week
United Airlines
Best reviews • 7.4 score
Airline reviews
+1
Airline reviews
+1
Top routes
DEN - SUX
Cheapest • 41% average savings
CHI - SUX
Most popular
Insights
Insights
When to travel
February
Cheapest • 21% price drop
March
Most popular
Good to know
+1
Good to know
+1
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We hope you love your trip to Sioux City!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights to Sioux City

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals to Sioux City

Thu, Oct 8 - Sun, Oct 11
United Airlines Logo
4:00 pm - 5:53 pmORD  Chicago O'Hare Intl-SUX Sioux City Sioux Gateway
1h 53mnonstop
United Airlines Logo
8:35 am - 10:29 amSUX  Sioux City Sioux Gateway-ORD Chicago O'Hare Intl
1h 54mnonstop
$224United Airlines
Fri, Oct 9 - Sun, Oct 11
United Airlines Logo
4:00 pm - 5:53 pmORD  Chicago O'Hare Intl-SUX Sioux City Sioux Gateway
1h 53mnonstop
United Airlines Logo
8:35 am - 10:29 amSUX  Sioux City Sioux Gateway-ORD Chicago O'Hare Intl
1h 54mnonstop
$224United Airlines
Fri, Oct 2 - Thu, Oct 8
United Airlines Logo
4:00 pm - 5:53 pmORD  Chicago O'Hare Intl-SUX Sioux City Sioux Gateway
1h 53mnonstop
United Airlines Logo
8:35 am - 10:29 amSUX  Sioux City Sioux Gateway-ORD Chicago O'Hare Intl
1h 54mnonstop
$224United Airlines
Sat, Oct 3 - Sat, Oct 10
United Airlines Logo
9:05 pm - 11:43 pmDEN  Denver Intl-SUX Sioux City Sioux Gateway
1h 38mnonstop
United Airlines Logo
6:58 pm - 7:52 pmSUX  Sioux City Sioux Gateway-DEN Denver Intl
1h 54mnonstop
$234United Airlines
Thu, Nov 5 - Mon, Nov 9
United Airlines Logo
9:05 pm - 11:43 pmDEN  Denver Intl-SUX Sioux City Sioux Gateway
1h 38mnonstop
United Airlines Logo
6:45 pm - 7:41 pmSUX  Sioux City Sioux Gateway-DEN Denver Intl
1h 56mnonstop
$234United Airlines
Fri, Dec 25 - Tue, Jan 5
United Airlines Logo
9:02 pm - 11:44 pmDEN  Denver Intl-SUX Sioux City Sioux Gateway
1h 42mnonstop
United Airlines Logo
6:46 pm - 7:45 pmSUX  Sioux City Sioux Gateway-DEN Denver Intl
1h 59mnonstop
$234United Airlines
Fri, Oct 23 - Sat, Oct 31
United Airlines Logo
9:05 pm - 11:43 pmDEN  Denver Intl-SUX Sioux City Sioux Gateway
1h 38mnonstop
United Airlines Logo
6:45 pm - 7:41 pmSUX  Sioux City Sioux Gateway-DEN Denver Intl
1h 56mnonstop
$234United Airlines
Fri, Nov 6 - Mon, Nov 9
United Airlines Logo
9:05 pm - 11:43 pmDEN  Denver Intl-SUX Sioux City Sioux Gateway
1h 38mnonstop
United Airlines Logo
6:45 pm - 7:41 pmSUX  Sioux City Sioux Gateway-DEN Denver Intl
1h 56mnonstop
$234United Airlines
Wed, Sep 30 - Wed, Oct 7
United Airlines Logo
9:05 pm - 11:43 pmDEN  Denver Intl-SUX Sioux City Sioux Gateway
1h 38mnonstop
United Airlines Logo
6:58 pm - 7:52 pmSUX  Sioux City Sioux Gateway-DEN Denver Intl
1h 54mnonstop
$234United Airlines
Fri, Oct 2 - Fri, Oct 9
United Airlines Logo
9:05 pm - 11:43 pmDEN  Denver Intl-SUX Sioux City Sioux Gateway
1h 38mnonstop
United Airlines Logo
6:58 pm - 7:52 pmSUX  Sioux City Sioux Gateway-DEN Denver Intl
1h 54mnonstop
$234United Airlines
Booking Insights

Price, demand and travel trends for United States to Sioux City flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from the United States to Sioux City with more confidence.

What is the cheapest flight to Sioux City?

Chicago O'Hare Intl Airport to Sioux City is the cheapest route at $224 round-trip, found in the past 5 days on KAYAK. Denver to Sioux City is the most popular connection with round-trip deals from $234.

How much is a flight to Sioux City?

A round-trip flight to Sioux City costs $424 on average, based on data over the past 12 months on KAYAK. Round-trip fares from Denver average $278, while Nashville runs a bit higher at $297.

What is the cheapest day to fly to Sioux City?

Saturday is the cheapest day to fly to Sioux City at $373 round-trip on average over the past 12 months on KAYAK. Monday is the most expensive at $621.

What is the cheapest month to fly to Sioux City?

  • February is the cheapest month to fly to Sioux City with an average price of $336 round-trip.
  • May ($489) and March ($483) are the most expensive.
  • Based on KAYAK data over the past 12 months.

What is the cheapest time of day to fly to Sioux City?

Morning flights to Sioux City are the cheapest at $392 round-trip on average. Afternoon flights are the most expensive at $451.

What is a good deal for flights to Sioux City?

Flights under $303 are considered a good deal. 25% of KAYAK users found round-trip flights to Sioux City at or below these prices, with the lowest fares from:

  • Chicago $204
  • Colorado Springs $233
  • Denver $234
.

Find deals

Key details for flights to Sioux City

Low season

December

Cheapest flight

$163
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly with an average 14% increase in price.
Flight from Denver to Sioux City

When to book flights to Sioux City

Are your dates flexible? Find out the best times to travel to Sioux City based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your questions about flights to Sioux City, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • What is the difference between the most popular and the most frequent airline at Sioux City?

    United Airlines operates the most flights from the United States to Sioux City at 14 per week, and for this route United Airlines is also the airline most often selected by KAYAK users searching for flights from the United States to Sioux City. The two are often different because flight volume reflects an airline's schedule, while popularity reflects traveler choice.

  • How far is Sioux City Sioux Gateway from downtown Sioux City?

    Sioux City Sioux Gateway is 6.5 mi from downtown Sioux City.

  • How long are nonstop flights to Sioux City from different departure cities?

    Nonstop flight time to Sioux City varies depending on your departure city:
    • from Chicago: 1h 50m
    • from Denver: 1h 38m

  • Where can I fly from to get the cheapest fares to Sioux City?

    Based on fares booked in the past 5 days, the cheapest flights to Sioux City are from:
    • Chicago, from $224 round-trip

  • How many flights serve Sioux City?

    Sioux City receives 2 flights per day and 14 per week from across the world. Chicago has the most flights to Sioux City, with 7 weekly flights.

  • How do I know if a flight to Sioux City is a good deal?

    A good deal on a flight to Sioux City is around $303 round-trip. This fare is in the lowest 25% of round-trip prices searched on KAYAK, averaged across the cities most often searched as origins by KAYAK users.

Your guide to booking Sioux City flights

From booking to airport arrival, find tips to help you plan your flight with more confidence.
  • For flights to Sioux City, recent KAYAK data shows that stronger deals tend to land around $303 round-trip. If you see a fare below that threshold, it's a strong deal – book before the price climbs back up.
  • If you can choose when to go, time your trip to Sioux City around February. Round-trip fares historically average $336 that month – typically the cheapest month to travel based on the last 12 months.
  • Before you book:

    • Check the route's typical price range so you can spot a deal.
    • Confirm baggage fees and seat-selection costs on budget carriers.
    • Verify whether you need any travel documents beyond ID.
    • Pick a departure airport, since your nearest may not be the cheapest origin.
  • Shift your departure to morning to save up to $59 per round-trip. Morning flights to Sioux City average $392 compared to $451 for noon flights. See the time-of-day chart above for the full breakdown.
  • Bag allowances vary by airline, fare type, cabin class and route. On flights to Sioux City, some airlines may include bags at no extra cost. For example, United Airlines includes a cabin bag in Economy Class and JetBlue includes a cabin bag in Economy Class. Always check the fare details before booking, since bag policies can change by ticket type.

Reviews of the top airline flying to Sioux City

 
Need help choosing which airline to fly with to Sioux City? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 10169 reviews
8.1Crew
7.7Boarding
7.3Comfort
7.1Entertainment
6.7Food
Airline reviews

Airplane is not very clean, food quality and taste was not good. Lufthansa used to be good but nowadays went down. Overall experience is just okay, wouldn't fly again, prefer Turkish airlines.

4.0 OkayAnonymous, Sep 2026
Read more United Airlines reviews

Airplane is not very clean, food quality and taste was not good. Lufthansa used to be good but nowadays went down. Overall experience is just okay, wouldn't fly again, prefer Turkish airlines.

I missed the flight due to maintenance issues. This is the second flight I’ve missed in four days because United allows such little time between layovers. Very disappointing

My return flight to Honolulu (UA 1170) was on a 777-200. I’d forgotten the weird seating arrangement in first-class (2-2-2); I was in 1B, so I faced the passenger in 1C. Unfortunately, there was a problem with the flight computer, so we left LA an hour late (6:05pm). The meal I chose was Korean BBQ Glazed short rib. It was served with a nice salad and fried rice. This meal was better than breakfast on the outgoing leg. All in all, a decent flying experience. Ratings: 777: 3.75, food: 3.5, service: 5 (out of 5).

Food was not Good Nuts came very wet & not tasting Good Main course I asked for Steak they got me Chicken because they don’t have more !!!!

It cancelled and we were unable to catch our connecting international flights.

A long delay. Don't travel late in the day.

The seat was comfortable. There was a lot of turbulence. If it weren't for that,it would have been okay.

It was great, I’m very grateful for the pilots and crew flight attendants for everything.

Flight was great. Efficient boarding. Short flight. Early arrival. Friendly flight crew. The entertainment system did not work well. Could not access it until the aircraft reached 10K feet or more. Lots of glitches.

No food service almost missed because of first flight delays

More options for your flight to Sioux City