What’s the cost of a flight from Sioux City to Saint Louis?

Prices vary based on date, airline, and availability. Compare several options if you're flying between Sioux City and Saint Louis.

Choose a date to explore the best fares now.

If possible, avoid holiday periods: ticket prices tend to rise quickly and availability drops, especially on busy routes. Morning and evening flights are often in high demand too — book early to get a good fare.

Which airports are most convenient between Sioux City and Saint Louis?

Whether it’s cost or connection time, the right airport combination can make a difference.

• Airports in Sioux City: Only Sioux City - Sioux Gateway is currently active.
• Airports in Saint Louis: Saint Louis - Lambert is the only functioning airport for now.

In some cases, flying into a secondary airport can also reduce transfer costs. Connections from multiple airports give you more flight options and airlines.

Smart ways to search flights from Sioux City to Saint Louis

Use Jetcost to view tailored results based on what you care about — time, duration, number of stops, or even your preferred booking agency. Results include carriers like American, Delta, United, and more.

Other popular destinations

Flying to United States? Other travelers also searched: Atlanta, Los Angeles, Miami, New York City, Orlando.

Prefer non-stop flights? Just activate the filter to skip unnecessary layovers. If your dates are flexible, you can also explore different departure and return combinations to find the best fit.