Cheap flights from Iowa to St. Louis from $119

In general, July is the cheapest month to fly from Iowa to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $0. The month of May is another great option to travel to St. Louis, with average flight prices from Iowa averaging around $116.

The cheapest day to depart on your flight to St. Louis is on a Wednesday when prices can be found for as low as $364. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $472. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

Flying to St. Louis from Iowa in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $413 when looking at flights departing in the afternoon. In the morning is when there is more demand to fly to St. Louis, so prices are often more expensive at around $425 per ticket.

Fly from Des Moines to Lambert-St Louis for the best Iowa - Lambert-St Louis flight prices

Southwest, Delta, and United Airlines are the most popular carriers operating from Iowa to Lambert-St Louis

United Airlines, American Airlines and Delta are the top three most popular airlines that fly to St. Louis from Iowa according to our data. United Airlines is the first choice among our users, with 50% of people opting to fly with this airline when traveling to St. Louis. Keep in mind that there are 3 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.