Cheap flights from St. Louis to Sioux City (STL - SUX)

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How to find the cheapest flight from
St. Louis (STL) to Sioux City (SUX)

All the information you need to plan the best STL to SUX flight in 2022: compare St. Louis to Sioux City flight prices with the expected peak season, weather and rainfall in Sioux City.
When is the cheapest time to fly from St. Louis to Sioux City (STL - SUX)?

When flying from St. Louis to Sioux City, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Related info for your journey

Useful info, stats and facts about <span class="emphasized">St. Louis</span> to <span class="emphasized">Sioux City</span> flights.

COVID Restrictions

View COVID Travel Restrictions for Sioux City, IA

Do I need a COVID test to fly to Sioux City from St. Louis?

Information is based on travel restrictions for travel to Sioux City Sioux Gateway within the United States

Most visitors from Lambert-St Louis need to provide a negative COVID-19 test result and/or quarantine to enter Sioux City Sioux Gateway.

COVID-19 testing requirements
Visitors from Lambert-St Louis must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 1 day for RT-PCR (NAAT) and 1 day for Antigen (quick-test) before departing to Sioux City Sioux Gateway.

Quarantine requirements
Visitors from Lambert-St Louis are not required to quarantine after entering Sioux City Sioux Gateway.

Do I need a test to fly back to St. Louis from Sioux City?

Returning to Lambert-St Louis from Sioux City Sioux Gateway

COVID-19 testing requirements
Visitors from Sioux City Sioux Gateway must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 1 day for RT-PCR (NAAT) and 1 day for Antigen (quick-test) before departing to Lambert-St Louis.

Quarantine requirements
Visitors from Sioux City Sioux Gateway are not required to quarantine after entering Lambert-St Louis.

Hide COVID Travel Restrictions for Sioux City, IA

Alternative routes for St. Louis to Sioux City

See prices for flight routes from nearby airports that may be better suited for you.

Destination information for Sioux City

Things to know before you go - useful duration and weather info for your trip from St. Louis to Sioux City.
Average temperature for May in Sioux City
75.2 °F
Avg rainfall for May in Sioux City
3.9 ″

Airports servicing St. Louis

Airports servicing Sioux City

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