$94 Find Cheap Flights from St. Louis to Newark Liberty Airport - Compare and Save

Among airlines operating St. Louis to Newark Airport flights:

• United Airlines: offers extra legroom; offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

Only United Airlines operates flights between St. Louis and Newark Airport.

Flights from St. Louis to Newark Airport usually depart from Lambert-St Louis (STL) and arrive at Newark (EWR).

Here are some options for this route, based on selected ticket types and cabin classes:

• United Airlines: a cabin bag and a checked bag in Economy Class

Bag allowance can vary by ticket type, cabin class, route and airline, so travelers should check the fare details before booking.

Three cabin classes are available on flights from St. Louis to Newark Airport:

• Economy Class
• Business Class
• First Class

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $242 round-trip via Orlando (MCO), compared to $377 for nonstop.

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $40–$80 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

The Embraer 175 (Enhanced Winglets) family is used most often on this route, operated mainly by United Airlines. Other aircraft seen on the route include Boeing 737-700 variants.

One-stop flights from St. Louis to Newark Airport most commonly connect through:

• Atlanta Hartsfield-Jackson (ATL) - 54% of one-stop connections
• Detroit Metropolitan Wayne County (DTW) - 18% of one-stop connections
• Chicago O'Hare Intl (ORD) - 14% of one-stop connections
• Charlotte Douglas (CLT) - 12% of one-stop connections

Atlanta Hartsfield-Jackson (ATL) handles the largest share of one-stop connections on this route.

Yes. Being flexible with your travel dates can save you up to 25% on the St. Louis to Newark Airport route. Wednesday is the cheapest departure day at $335 round-trip on average, while Sunday is the most expensive at $446, a difference of $111. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

Morning is the busiest departure period on St. Louis to Newark Airport flights, with 67% of flights leaving in that window. Afternoon departures account for 33%, evening flights for 0%, and night flights for 0%.

Some of the most popular sights in Newark Airport are Prudential Center, New Jersey Performing Arts Center and Newark City Hall. These are among the most viewed places in Newark Airport on KAYAK.

These are the earliest and latest flight times available from St. Louis to Newark Airport:

• Earliest: departs at 6:00 am and lands at 8:32 am
• Latest: departs at 8:24 pm and lands at 10:56 pm.

The flight takes about 2h 32m.

Last-minute fares on this route - booked within 2 weeks of departure - run 13% above the route average of $372. Book 19 weeks before departure for the lowest fares.

A nonstop flight from St. Louis to Newark Airport takes 2h 32m, covering 869 miles.

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $153 to $1,244. That means the highest observed fare was about 8x higher than the lowest one.

One-way fares from St. Louis to Newark Airport are currently lower than usual. Average one-way flight prices are about $139, which is 38% below the typical average for this route.

Flying via Detroit Metropolitan Wayne County (DTW) gives the shortest average 1-stop total travel time at 4h 31m, compared with 5h 03m via Chicago O'Hare Intl (ORD) and 5h 48m via Charlotte Douglas (CLT).

Newark Airport is 1 hour ahead of St. Louis (Eastern Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

Newark Airport (EWR) hosts 5 major car rental companies, with daily rates starting from around $28 for economy cars. Top options include:
• Ace
• Budget
• Alamo
• Dollar
• Hertz

Round-trip flights from St. Louis to Newark Airport range from $315 to $455, with an average of $372 over the past 12 months. Anything below $315 counts as a good deal.