$77 Cheap Flights from Newark Liberty Intl. Airport (EWR) to St. Louis (STL)

View $77 flight on Thu, Oct 9, 2025Opens in a new window

Popular airlines from Newark Liberty Intl. Airport (EWR) to St. Louis Lambert Intl. Airport (STL)

Cheap Flights from Newark Liberty Intl. Airport to St. Louis (EWR-STL)

Prices were available within the past 7 days and start at $77 for one-way flights and $154 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Thu, Sep 25 - Mon, Sep 29
EWR
New York
STL
St. Louis
$154 Roundtrip, found 2 hours ago
$154
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Thu, Sep 25 from New York to St. Louis, returning Mon, Sep 29, priced at $154 found 2 hours ago
Frontier Airlines
Thu, Oct 9 - Sat, Oct 18
EWR
New York
STL
St. Louis
$158 Roundtrip, found 5 hours ago
$158
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Thu, Oct 9 from New York to St. Louis, returning Sat, Oct 18, priced at $158 found 5 hours ago
Frontier Airlines
Thu, Oct 9 - Sat, Oct 11
EWR
New York
STL
St. Louis
$159 Roundtrip, found 5 hours ago
$159
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Thu, Oct 9 from New York to St. Louis, returning Sat, Oct 11, priced at $159 found 5 hours ago
United
Tue, Feb 17 - Sat, Feb 21
EWR
New York
STL
St. Louis
$159 Roundtrip, found 5 days ago
$159
Roundtrip
found 5 days ago
Select United flight, departing Tue, Feb 17 from New York to St. Louis, returning Sat, Feb 21, priced at $159 found 5 days ago
Frontier Airlines
Thu, Oct 2 - Sat, Oct 11
EWR
New York
STL
St. Louis
$164 Roundtrip, found 5 hours ago
$164
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Thu, Oct 2 from New York to St. Louis, returning Sat, Oct 11, priced at $164 found 5 hours ago
Frontier Airlines
Sun, Oct 5 - Sat, Oct 11
EWR
New York
STL
St. Louis
$165 Roundtrip, found 11 hours ago
$165
Roundtrip
found 11 hours ago
Select Frontier Airlines flight, departing Sun, Oct 5 from New York to St. Louis, returning Sat, Oct 11, priced at $165 found 11 hours ago
Frontier Airlines
Thu, Sep 25 - Sun, Sep 28
EWR
New York
STL
St. Louis
$166 Roundtrip, found 7 hours ago
$166
Roundtrip
found 7 hours ago
Select Frontier Airlines flight, departing Thu, Sep 25 from New York to St. Louis, returning Sun, Sep 28, priced at $166 found 7 hours ago
Spirit Airlines
Sat, Nov 1 - Fri, Nov 7
EWR
New York
STL
St. Louis
$176 Roundtrip, found 12 hours ago
$176
Roundtrip
found 12 hours ago
Select Spirit Airlines flight, departing Sat, Nov 1 from New York to St. Louis, returning Fri, Nov 7, priced at $176 found 12 hours ago
American Airlines
Wed, Oct 22 - Sat, Oct 25
EWR
New York
STL
St. Louis
$179 Roundtrip, found 6 hours ago
$179
Roundtrip
found 6 hours ago
Select American Airlines flight, departing Wed, Oct 22 from New York to St. Louis, returning Sat, Oct 25, priced at $179 found 6 hours ago
Delta
Sat, Nov 1 - Fri, Nov 7
EWR
New York
STL
St. Louis
$188 Roundtrip, found 12 hours ago
$188
Roundtrip
found 12 hours ago
Select Delta flight, departing Sat, Nov 1 from New York to St. Louis, returning Fri, Nov 7, priced at $188 found 12 hours ago

Find the cheapest month to fly from New York (EWR) to St. Louis (STL)

August is typically the cheapest month to fly

From $135 - $207 per traveler.

Frequently asked questions

How much does a flight from Liberty Intl. Airport (EWR) to Lambert-St. Louis Intl. Airport (STL) cost?
Grab a cheap one-way flight from $77 or cheap return flight from $154 from Liberty Intl. Airport (EWR) to Lambert-St. Louis Intl. Airport (STL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Liberty Intl. Airport (EWR) to Lambert-St. Louis Intl. Airport (STL)?
September is the least expensive month to fly from EWR to STL. Planning your trip for the off-season is often the key to better flight prices.
Which airlines fly direct from Liberty Intl. Airport (EWR) to Lambert-St. Louis Intl. Airport (STL)?
Fly directly from Liberty Intl. Airport (EWR) to Lambert-St. Louis Intl. Airport (STL) on a United Airlines flight.
What is the cheapest airline that flies from Liberty Intl. Airport (EWR) to Lambert-St. Louis Intl. Airport (STL)?
To find the cheapest airline flying from EWR to STL, use Expedia's filter tool. Tailor your search based on what matters most to you, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to discover the cheapest flight right away.
How many flights per day from Liberty Intl. Airport (EWR) to Lambert-St. Louis Intl. Airport (STL)?
Every day, an average of 3 nonstop flights take off from Liberty Intl. Airport (EWR) to Lambert-St. Louis Intl. Airport (STL). Select the departure date that best suits your travel plans.
What are the most popular departure times for flights from Liberty Intl. Airport (EWR) to Lambert-St. Louis Intl. Airport (STL)?
Flights between EWR and STL are their busiest at 8 AM. If you'd like a more relaxed experience and possibly cheaper tickets, look for a departure that's outside typical rush times.
What day of the week has the most flights from EWR to STL?
Friday has the most flights from Liberty Intl. Airport (EWR) to Lambert-St. Louis Intl. Airport (STL). Consider traveling on this day and you'll have a greater chance of finding a departure that fits your schedule.
What is the earliest flight from Liberty Intl. Airport (EWR) to Lambert-St. Louis Intl. Airport (STL)?
The earliest flight leaving Liberty Intl. Airport (EWR) is at around 8:43AM UTC-5. Catch this flight and you'll arrive at Lambert-St. Louis Intl. Airport (STL) at approximately 10:43AM UTC-6. The total time in the air is 3h.
How long does it take to fly from Liberty Intl. Airport (EWR) to Lambert-St. Louis Intl. Airport (STL)?
Flights from EWR to STL have an average travel time of 2 hours and 58 minutes. The distance between these two airports is 870 mi.
What is the best time to fly from Liberty Intl. Airport (EWR) to Lambert-St. Louis Intl. Airport (STL)?
Select a flight from Liberty Intl. Airport (EWR) to Lambert-St. Louis Intl. Airport (STL) that leaves before 3 PM to reduce the risk of cancellations and delays. Departures after this hour are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for St. Louis from Liberty Intl. Airport (EWR)?
Explore your flight options from Liberty Intl. Airport (EWR) to Lambert-St. Louis Intl. Airport (STL). This is the only St. Louis airport you can touch down at if you're taking a direct flight.
Is it cheaper to buy a plane ticket from Liberty Intl. Airport (EWR) to Lambert-St. Louis Intl. Airport (STL) last-minute?
Booking your plane ticket from EWR to STL right before your trip is usually more expensive. But if there's some wiggle room with your departure dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book an EWR to STL flight and hotel package?
Opting for an EWR to STL flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip all in one place. Select from our extensive range of accommodations and then add activities, car rentals and flights to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Liberty Intl. Airport (EWR) to Lambert-St. Louis Intl. Airport (STL)?
In most cases, you can modify or cancel your EWR to STL flight. However, additional charges may apply, especially if you made your booking more than 24 hours ago. Double-check your itinerary for the airline's policies and fees on flight changes, or if you need further information, visit our Customer Service portal.

Travel information

Travel information

Origin airport
Newark Liberty Intl. Airport
Destination airport
Lambert-St. Louis Intl.
Airlines serving
American Airlines, Delta, Frontier Airlines, Spirit Airlines, United
Roundtrip price
$148
Distance
869 mi
Average flight time
1 hour 50 mins

Book with confidence

Book with confidence

Newark Liberty Intl. Airport to St. Louis Flights

The cheapest times to fly from Newark Liberty Intl. Airport to St. Louis

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Newark Liberty Intl. Airport to St. Louis are during the month of September. You can find some of the cheapest flights from Newark Liberty Intl. Airport to St. Louis with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Newark Liberty Intl. Airport to St. Louis

Sunday is one of the best days to book for cheap flights from Newark Liberty Intl. Airport to St. Louis: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Newark Liberty Intl. Airport to St. Louis

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Newark Liberty Intl. Airport to St. Louis in 2025. You can also book with separate airlines for your outbound and return journeys, from $77 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Newark Liberty Intl. Airport to St. Louis flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Newark Liberty Intl. Airport to St. Louis airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Newark Liberty Intl. Airport to St. Louis Flights

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*Available to One Key members.