Cheap flights from New York to St. Louis from $99

In general, October is the cheapest month to fly from New York to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $349. The month of September is another great option to travel to St. Louis, with average flight prices from New York averaging around $359.

The cheapest day to depart on your flight to St. Louis is on a Wednesday when prices can be found for as low as $380. 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 $495. 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 York in the evening is the least expensive time of day to depart. momondo users have found prices as low as $390 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 $423 per ticket.

Fly from New York LaGuardia to Lambert-St Louis for the best New York - Lambert-St Louis flight prices

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

As of August 2026, prices for New York to St. Louis flights are approximately 6% cheaper when compared to flights at the same time last year.

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

United Airlines, Delta and American Airlines are the top three most popular airlines that fly to St. Louis from New York according to our data. United Airlines is the first choice among our users, with 48% 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.

Chicago (ORD) was the most common stop: 67% of momondo users choosing 1-stop flights on this route connected there.

Flights via Chicago (ORD) offer the lowest average round-trip price of $178.

Flights connecting via Chicago (ORD) have the shortest average one-way travel time: 5h 14m.

Chicago (ORD) has the shortest average layover time for this route: 1h 55m.

13 flights are operational daily from New York to St. Louis as of August 2026. The most popular departure time for this route is 9:00PM, with 41% of flights per day taking off in the evening.

The number of flights available between New York and St. Louis is 91 per week as of August 2026. The most frequent departure day is Thu, with 21% of weekly flights leaving on this day.