Cheap flights from Wisconsin to St. Louis from $49

In general, August is the cheapest month to fly from Wisconsin to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $286. The month of October is another great option to travel to St. Louis, with average flight prices from Wisconsin averaging around $287.

The cheapest day to depart on your flight to St. Louis is on a Wednesday when prices can be found for as low as $332. 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 Sunday because tickets tend to average around $445. 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 Wisconsin at noon is the least expensive time of day to depart. momondo users have found prices as low as $331 when looking at flights departing at noon. In the evening is when there is more demand to fly to St. Louis, so prices are often more expensive at around $509 per ticket.

Fly from Milwaukee-Mitchell to Lambert-St Louis for the best Wisconsin - Lambert-St Louis flight prices

There is only 1 cabin class available to choose from on Wisconsin to Lambert-St Louis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

No. A direct flight is the cheapest option for a flight between Wisconsin to St. Louis.

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

United Airlines, American Airlines and Southwest are the top three most popular airlines that fly to St. Louis from Wisconsin according to our data. United Airlines is the first choice among our users, with 34% of people opting to fly with this airline when traveling to St. Louis. Keep in mind that there are 4 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.

The number of flights available between Wisconsin and St. Louis is 62 per day as of March 2026. The most frequent departure time is 6:00AM, with 43% of daily flights leaving at noon.

As of March 2026, 435 flights take off from Wisconsin and land in St. Louis each week. The most common flight departure day for this route is Sun, with 19% of weekly flights taking off on this day.