Cheap flights from St. Louis to New Orleans from $65

The cheapest month to fly to New Orleans from St. Louis is in September. Flight prices, which tend to average around $307, are often lower during this time because this is during the off-season. If you are unable to visit New Orleans during the month of September, then departing from St. Louis during the month August is also very affordable. Most momondo users find prices during this month for around $329.

The cheapest day to depart from St. Louis to New Orleans is on a Tuesday when prices can be found for as low as $371. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from St. Louis to New Orleans for around $449.

The cheapest time of day to fly to New Orleans is at noon when flights can be purchased for as low as $371. In the afternoon is when there is more demand to fly to New Orleans, so prices are often more expensive at around $426 per ticket.

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

You are more likely to see cheaper flights to New Orleans from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to New Orleans for around $393 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to New Orleans from St. Louis for as low as $275 on momondo.

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

Southwest and Delta are the most popular carriers operating from Lambert-St Louis to New Orleans Louis Armstrong

Southwest, American Airlines and United Airlines are the top three most popular airlines that fly to New Orleans from St. Louis according to our data. Southwest is the first choice among our users, with 60% of people opting to fly with this airline when traveling to New Orleans. Keep in mind that there are 5 different airlines that fly to New Orleans on a routine basis, so you have a few additional options to choose from.

Atlanta (ATL) was the most common stop: 50% of momondo users choosing 1-stop flights on this route connected there.

Flights via Atlanta (ATL) offer the lowest average round-trip price of $434.

Flights connecting via Atlanta (ATL) have the shortest average one-way travel time: 4h 14m.

Houston (HOU) has the shortest average layover time for this route: 0h 50m.

The number of flights available between St. Louis and New Orleans is 1 per day as of April 2026. The most frequent departure time is 8:00AM, with 50% of daily flights leaving at noon.

13 flights are operational weekly from St. Louis to New Orleans as of April 2026. The most popular departure day for this route is Mon, with 23% of flights per week taking off on this day.