Cheap flights from Tennessee to St. Louis from $59

In general, August is the cheapest month to fly from Tennessee to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $81. The month of February is another great option to travel to St. Louis, with average flight prices from Tennessee averaging around $88.

The cheapest day to depart on your flight to St. Louis is on a Tuesday when prices can be found for as low as $299. 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 Saturday because tickets tend to average around $431. 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 Tennessee in the evening is the least expensive time of day to depart. momondo users have found prices as low as $359 when looking at flights departing in the evening. At noon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $447 per ticket.

Fly from Nashville Intl to Lambert-St Louis for the best Tennessee - Lambert-St Louis flight prices

You could potentially save up to 17% on your flight if you consider stops on a Tennessee to St. Louis flight.

Southwest, Delta, and Frontier are the most popular carriers operating from Tennessee to Lambert-St Louis

American Airlines, Delta and Southwest are the top three most popular airlines that fly to St. Louis from Tennessee according to our data. American Airlines is the first choice among our users, with 35% of people opting to fly with this airline when traveling to St. Louis. Keep in mind that there are 5 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.

As of May 2026, there are 3 flights per day flying from Tennessee to St. Louis. The most common time of day flights depart is 6:00AM, with 46% of flights taking off at noon.

As of May 2026, there are 23 flights per week flying from Tennessee to St. Louis. The most common day of the week flights depart is Mon, with 22% of flights taking off on this day.