Cheap flights from St. Louis to Louisiana from $78

In general, April is the cheapest month to fly from St. Louis to Louisiana. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $368. The month of January is another great option to travel to Louisiana, with average flight prices from St. Louis averaging around $398.

According to our data, Tuesday is the cheapest day to fly to Louisiana from St. Louis. The lowest ticket price found for a Tuesday departure recently was $350. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to Louisiana on Saturday is $472.

The cheapest time of day to fly to Louisiana is in the afternoon when flights can be purchased for as low as $426. In contrast, the most expensive time of day to depart to Louisiana is at noon when prices are around $493.

Fly from Lambert-St Louis to New Orleans Louis Armstrong for the best Lambert-St Louis - Louisiana flight prices

You are more likely to see cheaper flights to Louisiana from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Louisiana for around $433 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Louisiana from St. Louis for as low as $277 on momondo.

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

Frontier, Delta, and American Airlines are the most popular carriers operating from Lambert-St Louis to Louisiana

Southwest, American Airlines and United Airlines are the top three most popular airlines that fly to Louisiana from St. Louis according to our data. Southwest is the first choice among our users, with 68% of people opting to fly with this airline when traveling to Louisiana. Keep in mind that there are 5 different airlines that fly to Louisiana on a routine basis, so you have a few additional options to choose from.

1 flights are operational daily from St. Louis to Louisiana as of November 2026. The most popular departure time for this route is 8:00AM, with 50% of flights per day taking off at noon.

The number of flights available between St. Louis and Louisiana is 10 per week as of November 2026. The most frequent departure day is Mon, with 20% of weekly flights leaving on this day.