EWR - STL

$72 Find Cheap Flights from Newark Liberty Airport to St. Louis

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Newark to St. Louis departing on 4/14. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Newark to St. Louis, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Newark to St. Louis, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$339
Overall average: $356
United Airlines
Wed 5/6Sun 5/10
EWR - STL • Non-stop
Cheapest non-stop
$345
Typical prices: $310-$474
United Airlines
Wed 5/20Mon 5/25
EWR - STL • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
Security lines at Newark can be long, so arrive early.
Use MetroLink for easy access from STL to downtown.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Cheapest • from $339 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
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Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with United Airlines. Average duration is 2h 59m
Direct flights
Direct flights
+1
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Direct flights
Direct flights
+1
Avoid delays
Most punctual • 85% on-time
Best time • Fewest delays
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $362 (round-trip)
Shortest trip • 4h 53m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 11% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 15% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
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We hope you love your trip to St. Louis!
Flight Deals
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Expert advice
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Newark to St. Louis that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Newark to St. Louis

Wed, May 6 - Sun, May 10
United Airlines Logo
9:59 pm - 11:57 pm
EWR
-
STL
2h 58mnonstop
United Airlines Logo
7:09 pm - 1:30 am
STL
-
EWR
5h 21m
1 stop
$339United Airlines
Mon, Apr 13 - Wed, Apr 15
Frontier Logo
1:30 pm - 11:25 pm
EWR
-
STL
10h 55m
1 stop
Frontier Logo
8:23 pm - 12:59 pm
STL
-
EWR
15h 36m
2 stops
$340Frontier
Tue, Apr 21 - Fri, Apr 24
Frontier Logo
1:45 pm - 11:19 pm
EWR
-
STL
10h 34m
1 stop
Frontier Logo
4:59 pm - 12:59 pm
STL
-
EWR
19h 00m
1 stop
$341Frontier
Mon, Apr 20 - Fri, Apr 24
Multiple Airlines Logo
1:54 pm - 11:19 pm
EWR
-
STL
10h 25m
1 stop
Multiple Airlines Logo
8:23 pm - 5:45 pm
STL
-
EWR
20h 22m
2 stops
$342Multiple Airlines
Sat, Apr 4 - Thu, Apr 9
Multiple Airlines Logo
10:29 pm - 10:30 am
EWR
-
STL
13h 01m
1 stop
Multiple Airlines Logo
6:29 pm - 11:29 pm
STL
-
EWR
28h 00m
2 stops
$343Multiple Airlines
Tue, Apr 7 - Thu, Apr 9
United Airlines Logo
2:24 pm - 9:13 pm
EWR
-
STL
7h 49m
1 stop
United Airlines Logo
6:15 am - 9:51 am
STL
-
EWR
2h 36mnonstop
$345United Airlines
Fri, May 15 - Mon, May 18
United Airlines Logo
9:59 pm - 11:57 pm
EWR
-
STL
2h 58mnonstop
United Airlines Logo
7:09 pm - 1:30 am
STL
-
EWR
5h 21m
1 stop
$346United Airlines
Fri, May 29 - Sun, May 31
United Airlines Logo
10:07 pm - 11:35 pm
EWR
-
STL
2h 28mnonstop
United Airlines Logo
5:41 pm - 12:42 am
STL
-
EWR
6h 01m
1 stop
$347United Airlines
Fri, Apr 24 - Mon, Apr 27
Frontier Logo
10:29 pm - 6:50 am
EWR
-
STL
9h 21m
1 stop
Frontier Logo
9:55 pm - 1:16 am
STL
-
EWR
26h 21m
2 stops
$348Frontier
Thu, Apr 23 - Sun, Apr 26
Multiple Airlines Logo
10:29 pm - 6:50 am
EWR
-
STL
9h 21m
1 stop
Multiple Airlines Logo
4:59 pm - 9:03 am
STL
-
EWR
15h 04m
1 stop
$349Multiple Airlines
Booking Insights

KAYAK's insights & trends for Newark to St. Louis flights

Get data-powered insights and trends into flights from Newark to St. Louis to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Newark Liberty Airport to St. Louis?

The average price of all round-trip flights from Newark Airport to St. Louis clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to St. Louis on a Saturday, as we generally find the cheapest rates on that day for this route. On the other hand, Monday is the most expensive day to fly from Newark Liberty Airport to St. Louis. For your return ticket, we recommend flying on a Thursday and avoiding Sundays for the best deals.

What is the cheapest month to fly from Newark Airport to St. Louis?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Newark Airport to St. Louis, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Newark Airport to St. Louis is October, where tickets cost $343 (return) on average. On the other hand, the most expensive months are March and February, where the average cost of round-trip tickets is $471 and $455 respectively.

Can I save money by flying with a layover from Newark Airport to St. Louis?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $452 on average.

How far in advance should I book a flight from Newark Airport to St. Louis?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Newark Airport to St. Louis, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Newark Airport to St. Louis, you should book around 3 weeks before departure, which saves you about 11% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

Expert advice

Expert advice for your flight from Newark to St. Louis

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on EWR

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Yulia Denisyuk

Yulia Denisyuk

Expert on STL

Yulia is a freelance journalist who’s dispatched from 90+ countries. Her work focuses on cultures, adventure trips and air travel, appearing in NatGeo, NYT, CNTraveler, and more. For past assignments, she’s stayed with nomads in Mongolia and learned the art of Imigongo in Rwanda. She’s based in Chicago; in winter she often questions that decision.

Good to know

Low seasonNovember
Cheapest flight$80
Best time to beat the crowds with an average 1% drop in price.
Most popular time to fly and prices are also 12% lower on average.
Flight from Newark Liberty Airport to St. Louis

When to book flights from Newark to St. Louis

Are your dates flexible? Find out the best times to travel from Newark to St. Louis based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Newark Liberty Airport to St. Louis flights

  • Are there changeable ticket options on flights from Newark Liberty Airport to St. Louis with United Airlines?

    Yes, United Airlines offers several changeable ticket options. Basic Economy tickets are the most restrictive and typically do not allow changes or cancellations. Economy tickets typically allow changes for a fee plus any difference in fare. United First and United Business tickets generally allow changes for a fee plus any difference in fare but the fee may be lower than for Economy tickets, and some fare classes may allow changes without a fee.

  • What is the luggage allowance on Spirit Airlines flights from Newark Liberty Airport to St. Louis?

    Spirit offers a bare fare that does not include checked or carry-on luggage on flights from Newark Liberty Airport to St. Louis. Passengers are required to pay for any bags they want to bring on the flight, including carry-on bags. Passengers can purchase up to five checked bags per flight. Bag fees vary depending on various factors, including the time of booking and the size and weight of the bag.

  • How do I get from Lambert-St-Louis Airport (STL) to the city center?

    The MetroLink light rail system has a station at STL, and you can take it to the city center. The train runs every 20 minutes during weekdays and every 30 minutes on weekends. Additionally, the MetroBus system also operates from the airport, and you can take the #49 bus to the city center. The bus stop is located outside of Terminal 1, Door 12.

  • What services does American Airlines offer economy-class passengers on flights from Newark Liberty Airport to St. Louis?

    American Airlines offers complimentary snacks and non-alcoholic beverages to economy-class passengers on flights from Newark Liberty Airport to St. Louis. These include soft drinks, coffee, and tea. Passengers can also enjoy a variety of in-flight entertainment options, including movies, TV shows, music, games, and Wi-Fi at a fee.

  • What is the cheapest flight from Newark Airport to St. Louis?

    In the last 3 days, the lowest price for a flight from Newark Airport to St. Louis was $72 for a one-way ticket and $339 for a round-trip.

  • Do I need a passport to fly between Newark Liberty Airport and St. Louis?

    A passport is not required to fly from Newark Liberty Airport to St. Louis.

  • Which airports will I be using when flying from Newark Liberty Airport to St. Louis?

    On your way to St. Louis, you’ll fly out from Newark. You’ll be landing at Lambert-St Louis.

  • Which airlines offer Wi-Fi service onboard planes from Newark Liberty Airport to St. Louis?

    Delta, and American Airlines offer inflight Wi-Fi service on the Newark Liberty Airport to St. Louis flight route.

  • Which aircraft models fly most regularly from Newark Liberty Airport to St. Louis?

    The Embraer 175 (Enhanced Winglets) is the aircraft model that flies most regularly on the Newark Liberty Airport to St. Louis flight route.

  • Which airline alliances offer flights from Newark Liberty Airport to St. Louis?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Newark Liberty Airport and St. Louis, with oneworld being the most commonly used for this route.

  • On which days can I fly direct from Newark Liberty Airport to St. Louis?

    There are nonstop flights from Newark Liberty Airport to St. Louis on a daily basis.

  • Which is the best airline for flights from Newark to St. Louis, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Newark to St. Louis are Delta and United Airlines. With an average price for the route of $352 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $413 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Newark Liberty Airport to St. Louis?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Newark Liberty Airport to St. Louis.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Newark Liberty Airport to St. Louis?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Newark Liberty Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Newark Liberty Airport to St. Louis?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to St. Louis with an airline and back to Newark Liberty Airport with another airline. Booking your flights between Newark Liberty Airport and STL can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Newark Liberty Airport to St. Louis?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Louis from Newark Liberty Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Newark Airport to St. Louis

  • Looking for a cheap flight? 25% of our users found flights on this route for $171 or less one-way and $395 or less round-trip.
  • Connecting flights from Newark Liberty Airport (EWR) to St. Louis (STL) usually have layovers in various cities depending on the airline you opt for. Some common layovers for this route include Orlando (MCO), Detroit (DTW), Chicago (ORD), Charlotte (CLT), and Atlanta (ATL).
  • American Airlines has implemented operational improvements to reduce its carbon emissions, such as optimizing flight routes to reduce the amount of fuel consumed during flights and reducing the amount of time spent idling on the tarmac including for flights from Newark Liberty Airport (EWR) to St. Louis (STL).
  • United Airlines offers child-friendly meals for children aged two to 12 years on flights from Newark Liberty Airport (EWR) to St. Louis (STL). The airline also offers a range of films, TV shows, and games suitable for children and allows the use of FAA-approved child restraint systems, including infant car seats, during flights.
  • Delta Airlines provides various forms of assistance onboard its flights from Newark Liberty Airport (EWR) to St. Louis (STL) for passengers with reduced mobility, including help with stowing and retrieving carry-on baggage, assistance with using the lavatory, and assistance with transfers.
  • Newark Liberty International Airport (EWR) is a hub for United Airlines which offers flights from Newark Liberty Airport to St. Louis. United Airlines operates from three terminals at Newark Airport: Terminal A, Terminal B, and Terminal C.

Prefer to fly direct from Newark Liberty Airport to St. Louis?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Newark to Lambert-St Louis.
Find which airlines fly direct from Newark Airport to Lambert-St Louis Airport, which days they fly and book direct flights.

Direct departures

Newark to Lambert-St Louis

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

Direct returns

Lambert-St Louis to Newark

Monday

United Airlines

United Airlines

Tuesday

United Airlines

United Airlines

Wednesday

United Airlines

United Airlines

Thursday

United Airlines

United Airlines

Friday

United Airlines

United Airlines

Saturday

United Airlines

United Airlines

Sunday

United Airlines

United Airlines

See more direct flights

Reviews of the top 3 airlines serving from Newark to St. Louis

 
See real verified KAYAK customer reviews for airlines flying from Newark to St. Louis. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Newark to St. Louis? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8293 reviews
7.8Entertainment
7.9Comfort
8.1Boarding
8.5Crew
7.2Food
Airline reviews

Love delta smaller commuter plane so no entertainment and paid wifi on MKE-LGA leg was extremely unreliable and slow

8.0 ExcellentMary, Mar 2026
LGA - MKE
Read more Delta reviews

Love delta smaller commuter plane so no entertainment and paid wifi on MKE-LGA leg was extremely unreliable and slow

Delayed. Hot. Passenger next to me was so large I couldn’t move.

The flight went very well, but the flight attendants didn't serve and food or drinks other than 1st class due to rough air but to be honest it wasn't that bumpy and I felt that they could've at least offered water and coffee perhaps. Also serving 1st class only is a bad look. I've been in 1st class many times and I would've felt that if the turbulence was too rough for the main cabin, it would be too rough for 1st class too.

There was an unruly family behind us that made the short flight miserable!!! The cabin crew did nothing to contain it.

My seatback screen didn’t work so that sucked because that’s what I was going to do on the plane.

The whole experience was excellent. As it most often is with Delta

There’s not much to say about a one hour flight. This is a connection from LA to RNO that I missed the previous night due to a mechanical check delay on my originating flight from JFK to LAX. The short flight itself was fine. Instructions from the pilot and crew were per usual. The coffee was barely lukewarm, which possibly was purposeful so we would down it quickly. Bags were already on carousel upon reaching baggage claim, which was excellent.

Flight crew issues delayed my flight by 2 1/2 hours. Causing me to miss my connection.

Boarding and crew were fantastic, but I paid for a window seat with no window. Seat 11D on a CRJ-900 apparently does not have a window. Lesson learned.

Delta flights recently are always delayed AND at jfk tney get the gates further away (need To walk 20’ to get to them/all the way at the end of the terminal). Not sure whats happening but price doesnt match experience!

Everything went well except the turbulence what no one have a control of but pilot and crew handled very good!

Airport terminal was outdated, flight was on a small jet with no wifi

Much better than Spirit. I was please by the easy fast check in and boarding

The attendant on board was amazing. She should be doing business/first international long haul.

Perfect flight. Smooth flight. Arrived 20 minutes early at destination. Excellent service.

Flight was delayed 8 times. We were sitting at the airport for 14 hours. We got 2 hours of sleep (if that) on what was not meant to be a red-eye.

Plane boarded early a quickly, was mostly full. We left close to on time. And landed early.

Excellent flight. Smooth, efficient boarding. Quick flight. Arrived early at STL.

Flight was timely, relatively comfortable, with decent entertainment and food served. Only problem encountered was with the free messaging which I highly appreciate, but it did not work from iphone to non-iphones.

This flight was perfect. No complaints and only the highest regard for the crew and ground staff and how they executed perfectly. I fly a lot with United and would request predictability and transparency in their operations instead of last minute changes.

There was no inflight service. Once we landed we were delayed to find a gate for an hour and a half which was 1/2 the total time in the air.

Small plane, poor meal choices for first class, bad terminal and boarding experience at LAX

The gate agent had a really bad attitude and refused to help me get on the standby list. She just handed me a card and said I needed to call a number. I asked her to help with the AA app on my phone and she just shrugged and said she didnt know. After a few phone calls, I eventually just went to a different gate agent on the other side of the terminal and got the help I needed.

Boarding delayed 20 minutes for no reason, no wifi, in flight entertainment, or snacks / waters?

One day, I do so hope for a gluten free snack! Seems like with the rest of the world FINALLY figuring out what gluten free is, American Airlines would too. Fingers crossed!!

I am very appreciative of the help provided to me by Dennis and Whitney. I had lost my phone at EWR airport and they were very kind in assisting me. This included advice on how to file a report and also helping me connect with family. The pilot was also great about keeping passengers updated on the flight progress with regular communications over the system.

This flight captain and crew were amazing, started ahead of time of departure and reached 30 mins before arrival time. Amazing!

I would like the crew to talk LESS over the PA and specifically about credit card offers. I am trying to work, sleep, watch a movie and the PA was booming about a credit card offer. Could we go back to the days when the customer was more important than selling a credit card?

My seat tv didn’t work the whole trip. And the seat space is too small despite being seated at the front.

On the plus side, crew was attentive, drinks were cold, and in-flight entertainment selection was better than some other airlines. On the negative aide, Plane was delayed almost an hour, either no announcements from the gate crew. Biscoff cookies are gross, appreciate airlines that give a choice. Also, crew had no personality or enthusiasm at all.

Everything you need to know for your flight from Newark to St. Louis

Information on your arrival and departure airports