--- title: "Sioux City (SUX) airport: direct flights & routes" description: "Flights to and from Sioux City (SUX), Sioux Gateway Airport: 2 nonstop destinations (Denver and Chicago). See who flies each one on 2LNR." canonical: "https://2lnr.com/routes/sux" url: "https://2lnr.com/routes/sux.md" date_modified: "2026-10-23T14:17:50Z" --- # Direct flights from Sioux City (SUX) Sioux Gateway Airport (SUX) is a small station with nonstop service to 2 destinations, flown by one airline, led by United Airlines. The schedule below is every nonstop SUX route in 2LNR's schedule data. Route data refreshed October 23, 2026. Routes and carriers reflect the schedule data behind 2LNR's route map. Updated October 20, 2026. Explore Sioux City routes on the interactive map [Get started free](https://2lnr.com/login) 2 Nonstop destinations 1 Airlines serving SUX Free To get started ## About Sioux Gateway Airport (SUX) Sioux Gateway Airport (SUX) is the airport serving Sioux City, United States. Its ICAO code is KSUX. Departure and arrival times at SUX are local to the America/Chicago time zone. Every one of its 2 nonstop destinations is inside United States. ## Every nonstop route from Sioux City This page carries every nonstop route from SUX in 2LNR's schedule data, with the airlines that operate each one and how often it runs. Pick a destination below for that route's own schedule and timetable. ### Every nonstop from here Each SUX nonstop in 2LNR's schedule data opens its own route page, with who flies it and how often. ### Plan on the map Explore every SUX nonstop on the interactive route map, with connections and route statistics. ## All nonstop destinations from Sioux City (SUX) These are the city pairs behind flights to and from Sioux City: 2 nonstop destinations with active service at Sioux Gateway Airport. Each route links to its own schedule. - [Sioux City to Chicago flights (SUX-ORD)](https://2lnr.com/routes/sux-ord.md): United Airlines\ [Return: Chicago to Sioux City](https://2lnr.com/routes/ord-sux.md) - [Sioux City to Denver flights (SUX-DEN)](https://2lnr.com/routes/sux-den.md): United Airlines\ [Return: Denver to Sioux City](https://2lnr.com/routes/den-sux.md) Explore SUX routes on the interactive map → ## Nonstop flights to Sioux City (SUX) 2 airports have nonstops to Sioux Gateway Airport in 2LNR's schedule data. Here they are, with the airlines that fly each route. - [Chicago to Sioux City flights (ORD-SUX)](https://2lnr.com/routes/ord-sux.md): United Airlines - [Denver to Sioux City flights (DEN-SUX)](https://2lnr.com/routes/den-sux.md): United Airlines ## Airlines that fly out of Sioux City (SUX) The carriers with nonstop service from Sioux Gateway Airport, ordered by how many destinations each one reaches. Each links to that airline's full route map. - [United Airlines (UA)](https://2lnr.com/routes/airlines/ua.md) ## Alternative airports near Sioux City (SUX) Nearby airports with nonstop service of their own, closest first. Distances are great-circle between the two airports' coordinates, not driving time, so check the ground connection before you treat one as a substitute. - [Omaha (OMA)](https://2lnr.com/routes/oma.md) (80 miles, 29 nonstop destinations) - [Sioux Falls (FSD)](https://2lnr.com/routes/fsd.md) (83 miles, 13 nonstop destinations) - [Lincoln (LNK)](https://2lnr.com/routes/lnk.md) (109 miles, 6 nonstop destinations) - [Fort Dodge (FOD)](https://2lnr.com/routes/fod.md) (112 miles, 2 nonstop destinations) - [Grand Island (GRI)](https://2lnr.com/routes/gri.md) (140 miles, 3 nonstop destinations) [United States flights by airport](https://2lnr.com/routes/to/united-states.md) - [How to plan an upgrade by route](https://2lnr.com/guides/upgrade-strategy.md) ## Frequently asked questions about Sioux City (SUX) **How many nonstop destinations does Sioux Gateway Airport (SUX) serve?** Sioux Gateway Airport has active nonstop service to 2 destinations in 2LNR's schedule data. The busiest markets from SUX are Denver and Chicago. The full list, with who flies each route and, where 2LNR tracks the carrier, upgrade and award space by date, is on this page. **Which airlines fly out of Sioux City (SUX)?** The carriers with nonstop service from Sioux Gateway Airport are listed in full on this page, each linked to its own route map. United Airlines run the most routes from Sioux City. In 2LNR's schedule data that is one airline in total. **How many airlines fly out of SUX?** 2LNR's schedule data currently shows one airline with at least one nonstop route from Sioux City (SUX). That figure counts the carrier operating the flight rather than every carrier that sells a seat on it, so a codeshare marketed by a partner is not counted twice, and it moves with the season. **Does 2LNR show upgrade or award space from SUX?** Not from SUX: 2LNR doesn't show award or upgrade space on any route from it. Pick any destination on this page to open that route's nonstop schedule and timetable instead. **Does 2LNR track flights from SUX?** Every nonstop route from Sioux Gateway Airport in 2LNR's schedule data is listed here, 2 destinations in total, with who flies each one. 2LNR doesn't show award or upgrade space on these routes, so this page carries the schedule rather than a space claim. **Where can you fly nonstop from Sioux City (SUX)?** From Sioux City (SUX), 2LNR's schedule data shows nonstop flights to Chicago and Denver. This page lists every one, with the airlines that fly it. ## Every nonstop from SUX, who flies it and when Open any route for its timetable and who flies it. Where 2LNR tracks the carrier, upgrade and award space shows by date, the next 14 days free on every product and the full horizon on Pro. [Get started free](https://2lnr.com/login)