Cheap flights from St. Louis to New York from $109

The cheapest month to fly to Newark Airport from St. Louis is in September. Flight prices, which tend to average around $333, are often lower during this time because this is during the off-season. If you don’t want to visit Newark Airport in September, then you should wait until August to fly from St. Louis, when ticket prices are also cheap, with an average price of $335.

The cheapest day to depart on your flight to Newark Airport is on a Friday when prices can be found for as low as $481. This is often the case because there is less demand to fly during this day of the week. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from St. Louis to Newark Airport for around $779.

The cheapest time of day to fly to Newark Airport is in the morning when flights can be purchased for as low as $529. Flights in the afternoon are often more expensive with an average ticket price of $626.

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

You are more likely to see cheaper flights to Newark Airport from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Newark Airport for around $374 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Newark Airport from St. Louis for as low as $284 on momondo.

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

You could potentially save up to 6% on your flight if you consider stops on a St. Louis to Newark Airport flight.

As of May 2026, prices for St. Louis to Newark Airport flights are approximately 7% cheaper when compared to flights at the same time last year.

United Airlines and Delta are the most popular carriers operating from Lambert-St Louis to Newark

United Airlines, Delta and American Airlines are the top three most popular airlines that fly to Newark Airport from St. Louis according to our data. United Airlines is the first choice among our users, with 79% of people opting to fly with this airline when traveling to Newark Airport. Keep in mind that there are 5 different airlines that fly to Newark Airport on a routine basis, so you have a few additional options to choose from.

Detroit (DTW) was the most common stop: 44% of momondo users choosing 1-stop flights on this route connected there.

Flights via Detroit (DTW) offer the lowest average round-trip price of $245.

Flights connecting via Atlanta (ATL) have the shortest average one-way travel time: 4h 33m.

Atlanta (ATL) has the shortest average layover time for this route: 1h 04m.

4 flights are operational daily from St. Louis to Newark Airport as of May 2026. The most popular departure time for this route is 12:00PM, with 75% of flights per day taking off in the afternoon.

As of May 2026, there are 34 flights per week flying from St. Louis to Newark Airport. The most common day of the week flights depart is Mon, with 15% of flights taking off on this day.