STL - EWR

$54 Find Cheap Flights from St. Louis to Newark Liberty Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Newark departing on 9/12. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Newark Airport

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

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Newark 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 St. Louis to Newark

Thu, Jul 24 - Sun, Jul 27
Spirit Airlines Logo
10:47 am - 8:00 pmSTL-EWR
8h 13m1 stop
Spirit Airlines Logo
6:05 am - 9:52 amEWR-STL
4h 47m1 stop
$130Spirit Airlines
Find Deal
Fri, Sep 12 - Sat, Sep 20
Spirit Airlines Logo
8:44 am - 6:45 pmSTL-EWR
9h 01m1 stop
Spirit Airlines Logo
7:50 pm - 7:49 amEWR-STL
12h 59m1 stop
$134Spirit Airlines
Find Deal
Thu, Jul 17 - Sun, Jul 20
Spirit Airlines Logo
10:47 am - 8:00 pmSTL-EWR
8h 13m1 stop
Spirit Airlines Logo
6:05 am - 9:52 amEWR-STL
4h 47m1 stop
$137Spirit Airlines
Find Deal
Thu, Sep 4 - Tue, Sep 9
American Airlines Logo
5:27 am - 12:39 pmSTL-EWR
6h 12m1 stop
American Airlines Logo
10:50 am - 3:24 pmEWR-STL
5h 34m1 stop
$217American Airlines
Find Deal
Tue, Sep 16 - Wed, Sep 17
United Airlines Logo
6:00 am - 9:36 amSTL-EWR
2h 36mnonstop
United Airlines Logo
9:59 am - 2:19 pmEWR-STL
5h 20m1 stop
$223United Airlines
Find Deal
Sat, Aug 16 - Wed, Aug 20
United Airlines Logo
5:30 pm - 12:46 amSTL-EWR
6h 16m1 stop
United Airlines Logo
9:48 pm - 11:44 pmEWR-STL
2h 56mnonstop
$229United Airlines
Find Deal
Wed, Sep 17 - Sat, Sep 20
American Airlines Logo
6:27 am - 12:59 pmSTL-EWR
5h 32m1 stop
American Airlines Logo
1:59 pm - 6:41 pmEWR-STL
5h 42m1 stop
$239American Airlines
Find Deal
Tue, Jun 24 - Mon, Jun 30
 Logo
1:00 pm - 12:46 amSTL-EWR
34h 46m2 stops
 Logo
11:00 am - 6:18 pmEWR-STL
8h 18m1 stop
Thu, Jun 26 - Mon, Jun 30
 Logo
6:36 pm - 5:37 pmSTL-EWR
22h 01m1 stop
 Logo
6:53 am - 6:41 pmEWR-STL
12h 48m2 stops
Mon, Jun 30 - Fri, Jul 4
Delta Logo
6:40 am - 12:16 pmSTL-EWR
4h 36m1 stop
Delta Logo
12:00 pm - 4:18 pmEWR-STL
5h 18m1 stop
$261Delta
Find Deal
Expert advice

Expert advice for your flight from St. Louis to Newark

 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airports
STL

Avoid peak hours at STL to minimize wait times, especially in Terminal 2, which can get crowded due to Southwest's popularity.

Read more about STLby Yulia Denisyuk
EWR

For a quick and affordable trip to NYC from EWR, take the AirTrain to NJ Transit or Amtrak trains heading to New York Penn Station.

Read more about EWRby Stefanie Waldek
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on EWR

Stefanie Waldek

Stefanie Waldek

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.

Read more
Yulia Denisyuk

Yulia Denisyuk

Expert on STL

Yulia Denisyuk

Yulia Denisyuk

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.

Read more
Useful Info

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

Get data-powered insights and trends into flights from St. Louis to Newark 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 St. Louis to Newark Liberty Airport?

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

For St. Louis to Newark Liberty Airport, Friday is the cheapest day to fly on average and Monday is the most expensive. Flying from Newark Liberty Airport back to St. Louis, the best deals are generally found on Saturday, with Sunday being the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Newark Airport, 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 St. Louis to Newark Airport is September, where tickets cost $337 (return) on average. On the other hand, the most expensive months are November and December, where the average cost of round-trip tickets is $440 and $440 respectively.

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

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.

No, with an average price for the route of $499, prices are generally cheapest when you fly direct.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from St. Louis to Newark Airport, 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 St. Louis to Newark Airport, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 17 weeks before departure.

Good to know

Low seasonJanuary
High seasonJune
Cheapest flight$54
Best time to beat the crowds with an average 2% drop in price.
Most popular time to fly and prices are also 3% lower on average.
Flight from St. Louis to Newark Liberty Airport

When to book flights from St. Louis to Newark

Are your dates flexible? Find out the best times to travel from St. Louis to Newark 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 St. Louis to Newark Liberty Airport flights

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

    In the last 3 days, the lowest price for a flight from St. Louis to Newark Airport was $54 for a one-way ticket and $130 for a round-trip.

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

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

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

    All the following airlines offer inflight Wi-Fi service on the St. Louis to Newark Liberty Airport flight route: Delta, American Airlines, Lufthansa, United Airlines, Alaska Airlines, and JetBlue.

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

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

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

    Star Alliance is the only airline alliance operating flights between St. Louis and Newark Liberty Airport.

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

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

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

    The two airlines most popular with KAYAK users for flights from St. Louis to Newark are Delta and United Airlines. With an average price for the route of $327 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $394 and an overall rating of 7.4.

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

    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 St. Louis to Newark Liberty Airport.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Newark Liberty Airport from St. Louis 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 St. Louis to Newark Liberty Airport?

    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 Newark Liberty Airport with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and EWR 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 St. Louis to Newark Liberty Airport?

    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 Newark Liberty Airport from St. Louis 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 St. Louis to Newark Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for $205 or less one-way and $435 or less round-trip.

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

Find which airlines fly direct from Lambert-St Louis Airport to Newark Airport, which days they fly and book direct flights.

Direct departures

Lambert-St Louis to Newark

Monday

Austrian Airlines, Lufthansa, United Airlines

Austrian Airlines, Lufthansa, +1 more

Tuesday

Austrian Airlines, Lufthansa, United Airlines

Austrian Airlines, Lufthansa, +1 more

Wednesday

Austrian Airlines, Lufthansa, United Airlines

Austrian Airlines, Lufthansa, +1 more

Thursday

Austrian Airlines, Lufthansa, United Airlines

Austrian Airlines, Lufthansa, +1 more

Friday

Austrian Airlines, Lufthansa, United Airlines

Austrian Airlines, Lufthansa, +1 more

Saturday

Austrian Airlines, Lufthansa, United Airlines

Austrian Airlines, Lufthansa, +1 more

Sunday

Austrian Airlines, Lufthansa, United Airlines

Austrian Airlines, Lufthansa, +1 more

See more direct flights

Direct returns

Newark to Lambert-St Louis

Monday

Austrian Airlines, Lufthansa, United Airlines

Austrian Airlines, Lufthansa, +1 more

Tuesday

Austrian Airlines, Lufthansa, United Airlines

Austrian Airlines, Lufthansa, +1 more

Wednesday

Austrian Airlines, Lufthansa, United Airlines

Austrian Airlines, Lufthansa, +1 more

Thursday

Austrian Airlines, Lufthansa, United Airlines

Austrian Airlines, Lufthansa, +1 more

Friday

Austrian Airlines, Lufthansa, United Airlines

Austrian Airlines, Lufthansa, +1 more

Saturday

Austrian Airlines, Lufthansa, United Airlines

Austrian Airlines, Lufthansa, +1 more

Sunday

Austrian Airlines, Lufthansa, United Airlines

Austrian Airlines, Lufthansa, +1 more

See more direct flights
See more direct flights

Top 4 airlines serving from St. Louis to Newark

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Newark. 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 St. Louis to Newark? 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.
8.0
DeltaOverall score based on 7946 reviews
8.2Boarding
7.9Comfort
7.9Entertainment
7.3Food
8.5Crew
Airline reviews

Boarding was tough as we had to take a bus out to the plane and walk up a lot of stairs. Difficult with heavy carry-ons that said I got an entire empty row of seats, which was excellent for an international flight. Food was very mediocre but happy with the comfort so not complaining.

10.0 ExcellentSally, Jun 2025LIS - JFK
Read more Delta reviews

Boarding was tough as we had to take a bus out to the plane and walk up a lot of stairs. Difficult with heavy carry-ons that said I got an entire empty row of seats, which was excellent for an international flight. Food was very mediocre but happy with the comfort so not complaining.

After I checked in, I realized we had no seat assignment. It said they would be assigned at the gate. This was really frustrating because I usually use a lounge before flights, but I couldn't because I had to be at the gate to ensure we got our seat assignments. The gate agent arrived an hour before the flight left. I was the first one up to ask about seat assignments. She told us to wait for names to be called. Dozens of other passengers were paged, but we were not. Finally, I asked my husband to ask. He went up and was also told to wait. About 10 minutes later, they called for boarding. We still had not been told our seats. We went back to the desk and they were in a panic, saying we actually weren't on that flight. Then they made an announcement telling the stand by passengers to not board (in case we needed their seats). It was so stressful and unprofessional. Finally they gave us our seats. I have no idea what happened and why the two desk agents seemed to have conflicting ideas about our seats, whether we were on that flight etc.

Subject: Complaint Regarding Disrespectful Behavior by Delta Air Lines Staff at Boarding Gate Dear Delta Air Lines Team, I am writing to formally file a complaint regarding the behavior of a staff member at the boarding gate today, May 14, 2025, at Las Américas International Airport. While we were preparing to board flight DL-1829 to New York, scheduled for 2:28 PM at gate T-11, we were informed that the aircraft was experiencing water system issues and that passengers were advised to use the restroom before boarding. I politely approached one of the Delta staff members to ask whether the lavatory would be partially or completely unavailable during the flight, as I am traveling with a baby in my arms. The employee’s response was extremely rude and arrogant. He replied, in an unnecessarily hostile tone, something along the lines of: “It’s either that or we cancel the flight — do you want us to cancel the flight?” This response lacked any empathy or professionalism. I understand that technical issues can arise, but that does not excuse such inappropriate treatment of passengers. I felt deeply disrespected and disappointed by the interaction. I sincerely hope appropriate measures are taken, and that all staff members receive the necessary training to treat passengers with courtesy, especially in delicate situations like this one.

Delayed take-off. Very small plane so very scary with lots of bumps during the flight. Would never fly Delta on short flights in small 80 seaters plane again! Felt relieved when landed.

The plane was old with small storage areas that had problems closing/latching and not enough storage for everyone, and worn, damaged seats. Service was great but feel a little unsafe on such well used planes.

Great staff. Wifi is terrible. Signing up for skylines is a painstaking process. Had to call customer service just to get my flight itinerary and confirmation sent to me. Consistent delays. A well staffed company that is run so poorly. Upper management needs to be renewed.

Boarding is, as it always is… horrible. Gate lice. Slow moving zones. Too many people with carry ons

I sat in comfort plus. It was fine. Seats were comfortable. I got drinks and snacks.

Good and consistent Printer in lounge did not work for me :(

Flight heavily delayed. No food available despite purchasing an upgrade. No in cabin service.

Very comfortable (upgraded to business class). The audio on my screen didn’t work, but I managed to play the audio through my phone while watching the screen.

get E+, a must for 5 hours flight if you are tall

Multiple delays and not straight answer from the United team

I just got back from a trip with 3 flights each way. The flights were good and we were happy with out experience. There was one steward on our first flight that was harsh and grump with passengers. It did not leave a good impression. All of the other flight crews were great on the other five flights.

Food and flight attendents with positive dispositions and friendly behavior, more professional attitudes

Easy to board. Flight was super crowded though so I didn't sleep well on that cross country red-eye flight. The aisles seem ot have gotten narrower and the seat smaller whn luggage and people are getting bigger so it would be AWESOME to have more space and breathing room in general ;)

Liked the hospitality . The ight took us 6 hrs to get from fort myers to ewr.

Wish movie and music choices changed more often. Mostly same from a month or two ago when I last flew.

Overall great. I was forced to check my carry-on backpack from EWR to BOS but it came out on the luggage carousel so fast I didn't even get delayed for my pickup.

Boarding was easy. RDU gates can get crowded, be prepared to be patient. Flight was smooth, with excellent service. Pilots really provided a lot of visibility into flight details. Plane and seats were clean and serviceable. TY!

Whenever a passenger purchase a ticket his advantage number should automatically to his information. It's not everyone remember the number. You request for your number and American airline agent say they will email it....and they never email anything and you loose your mileage just because you don't remember your number. It should automatically go your information and associate with your email account at all times

Newark airport grounded inbound flight and only announced when the flight was about to start taxing.

Boarding took forever, the plane was cramped and cold, and the seatbelt song came on constantly throughout the red eye flight with a loud pre-recorded message playing each time

Cabin felt crammed Snacks are lame But crew was super efficient getting us out on time despite delay

Two flight changes before the scheduled flight. On the day of the flight, the flight was delayed, which caused the connecting flight to be missed. Then, I was directed to another airport (CUN) and traveled to Tulum. American gave a $12 voucher for lunch. The least expensive item on the menu at a Mexican restaurant was $9.99. Driving to Tulum was a bad auto crash, and traffic was delayed two-plus hours. The bottom line is that we should have been at the hotel at noon, but it ended up at 11:30 PM.

Flight was empty so had a whole row to myself. Still had to wait to get the bag due to the negligence at Palm Springs departure.

Amazingly comfy flight - I had upgraded for a reasonable price and it was worth it. The food also was good.

Miami lounges were overcrowded and we were unable to get in. We only had a short time. But the banks are too tight in all American hubs

Only thing that I liked it that I got to my destination safely, otherwise American Airlines stinks.

Ok. Got us there safely and a bit early. Need food available on this long flight. Almost 3 hours.

The flight was canceled and was bounced around time wise with my elderly parents. That being said the gentleman in custody service was amazingly helpful

It amaze me how other airlines leave on time and Spirit always have some type of delay. I’ve flown with Spirit many times, but it reached a point I’d rather pay twice the amount and not deal with this corporation they never do nothing to reimburse people for their time or headaches.

Too many time late and postponed No electrical power for my electric devices

Flight and crew were good, no complaints at all. Easy, uneventful, quick flight. The delays, cancelled flight, hold time to wait for customer service on the phone were not good. One person that answered told me the delays, first on the way to Newark, and again on way from Newark were due to weather (there was no weather on flight coming in); turns out that was not true. Multiple flights were delayed and cancelled that weekend- 6 for the trip leaving on Sunday from what customer service at the desk told me. Newark was having issues with air traffic controller I believe. So, getting false information and only options of rebook (for another day, or one with stops to get in the next day), refund or a credit valid for 5 years, did nothing to help me get to work the next day or get my son home for school that next day. There was no sort of compensation for the wait or cancellation from airline or from airport. Just out of pocket for the uber ride and the missed hours at work.

The seats! Do not nickel and dime! Be transparent about all your fees!

It was fine, Can’t blame you about airport issues.

You get what you pay for, and the flights went smoothly. There’s no reclining chairs, no screens, And there isn’t always wifi, but the plane was clean and staff was friendly and the takeoff/landing were smooth.

We had an 8 hr delay so it was not good

The reservation was cancelled after a day and a half due to family reasons. There was no flight from Newark to Orlando 03.01.2025. Very bad customer service. Never use again.

Overall good experience for the price. Thank you for making travel affordable.

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

Information on your arrival and departure airports

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