Cheap flights from New Jersey to St. Louis from $70

The cheapest day to depart on your flight to St. Louis is on a Wednesday when prices can be found for as low as $379. 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 Monday because tickets tend to average around $492. 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 New Jersey in the evening is the least expensive time of day to depart. momondo users have found prices as low as $385 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 $424 per ticket.

Fly from Newark to Lambert-St Louis for the best New Jersey - Lambert-St Louis flight prices

There are 4 cabin classes available to choose from on New Jersey to St. Louis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

United Airlines, Delta and Frontier are the top three most popular airlines that fly to St. Louis from New Jersey according to our data. United Airlines is the first choice among our users, with 90% 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 New Jersey and St. Louis is 20 per day as of August 2026. The most frequent departure time is 10:00PM, with 52% of daily flights leaving in the evening.

As of August 2026, there are 142 flights per week flying from New Jersey to St. Louis. The most common day of the week flights depart is Fri, with 20% of flights taking off on this day.