STL - EWR

$59 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 3/18. 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 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
Travelers love KAYAK
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Everything you should know

Cheapest round-trip
$118
Overall average: $378
Multiple Airlines
Tue 2/24Wed 2/25
STL - EWR • 1 stop
Cheapest non-stop
$259
Typical prices: $342-$551
United Airlines
Sat 2/28Sat 2/28
STL - EWR • Non-stop
Our travelers' advice
AI-powered summary based on content written by travel experts. AI can make mistakes.
Avoid peak hours at STL to minimize wait times.
For an affordable NYC trip, use EWR's AirTrain.
Expert advice
Expert advice
Expert advice
Expert advice
When to book
5 weeks
in advance
Our data shows that travelers who book at least 5 weeks in advance save around 7% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
August
Cheapest • 17% price drop
June
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Newark!
Flight Deals
Booking Insights
Expert advice
Flight 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

Tue, Feb 24 - Wed, Feb 25
Multiple Airlines Logo
3:49 pm - 9:00 am
STL
-
EWR
16h 11m
1 stop
Multiple Airlines Logo
3:00 pm - 10:27 pm
EWR
-
STL
8h 27m
1 stop
$118Multiple Airlines
Wed, Feb 11 - Tue, Feb 17
Multiple Airlines Logo
8:17 pm - 8:05 am
STL
-
EWR
10h 48m
1 stop
Multiple Airlines Logo
10:31 pm - 6:51 am
EWR
-
STL
9h 20m
1 stop
$124Multiple Airlines
Mon, Feb 23 - Wed, Feb 25
Multiple Airlines Logo
8:22 pm - 8:05 am
STL
-
EWR
10h 43m
1 stop
Multiple Airlines Logo
3:00 pm - 10:27 pm
EWR
-
STL
8h 27m
1 stop
$127Multiple Airlines
Sat, Feb 14 - Tue, Feb 17
Multiple Airlines Logo
8:17 pm - 8:05 am
STL
-
EWR
10h 48m
1 stop
Multiple Airlines Logo
10:31 pm - 6:51 am
EWR
-
STL
9h 20m
1 stop
$128Multiple Airlines
Wed, Feb 18 - Tue, Feb 24
Multiple Airlines Logo
8:17 pm - 8:05 am
STL
-
EWR
10h 48m
1 stop
Multiple Airlines Logo
6:00 pm - 6:51 am
EWR
-
STL
13h 51m
1 stop
$129Multiple Airlines
Wed, Feb 25 - Wed, Mar 4
Multiple Airlines Logo
8:17 pm - 8:05 am
STL
-
EWR
10h 48m
1 stop
Multiple Airlines Logo
3:00 pm - 10:27 pm
EWR
-
STL
8h 27m
1 stop
$130Multiple Airlines
Wed, Mar 11 - Tue, Mar 17
Frontier Logo
11:32 am - 9:30 pm
STL
-
EWR
8h 58m
1 stop
Frontier Logo
10:30 pm - 10:37 am
EWR
-
STL
13h 07m
1 stop
$131Frontier
Mon, Feb 23 - Mon, Mar 2
Multiple Airlines Logo
8:22 pm - 8:05 am
STL
-
EWR
10h 43m
1 stop
Multiple Airlines Logo
10:30 pm - 10:27 pm
EWR
-
STL
24h 57m
1 stop
$132Multiple Airlines
Mon, Feb 23 - Thu, Feb 26
Multiple Airlines Logo
8:22 pm - 8:05 am
STL
-
EWR
10h 43m
1 stop
Multiple Airlines Logo
10:31 pm - 6:51 am
EWR
-
STL
9h 20m
1 stop
$133Multiple Airlines
Wed, Feb 18 - Thu, Feb 26
Multiple Airlines Logo
8:17 pm - 8:05 am
STL
-
EWR
10h 48m
1 stop
Multiple Airlines Logo
10:31 pm - 6:51 am
EWR
-
STL
9h 20m
1 stop
$134Multiple Airlines
Booking Insights

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 Sunday is the most expensive. Flying from Newark Liberty Airport back to St. Louis, the best deals are generally found on Wednesday, 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 August, where tickets cost $305 (return) on average. On the other hand, the most expensive months are March and January, where the average cost of round-trip tickets is $402 and $399 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 $363, 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 5 weeks before departure, which saves you about 7% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 14 weeks before departure.

Expert advice

Expert advice for your flight from St. Louis to Newark

 
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 seasonAugust
Cheapest flight$59
Best time to beat the crowds with an average 17% drop in price.
Most popular time to fly with an average 1% increase in price.
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 $59 for a one-way ticket and $120 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?

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

  • 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?

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

  • 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 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $380 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 $162 or less one-way and $352 or less round-trip.

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

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Lambert-St Louis to Newark.
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

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

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

Reviews of the top 5 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.
7.9
DeltaOverall score based on 8124 reviews
8.1Boarding
7.9Comfort
8.5Crew
7.2Food
7.8Entertainment
Airline reviews

The seats weren’t reclining even though it wasn’t as exit seat

6.0 GoodPuneet, Jan 2026
MSP - EWR
Read more Delta reviews

The seats weren’t reclining even though it wasn’t as exit seat

It was good because we traveled without luggage, carry on only.

Air travel sucks. It continues to be awful for all airlines. No shame on delta alone.

Delta canceled our flight and we had to scramble to find another airline to get home. Phoenix is not a delta hub so they didn’t have another plane. It would have been a red eye though Salt Lake City. Getting in at 5am. No bueno.

The food is terrible. The staff is wonderful. Comfort is good.

I fly Delta all the time, have Platinum Medallion status. But this route seems to have major problems with delays and seems to never leave on time! Have only taken it twice in the last two weeks, and each time it had delays of more than 1 hour... very disappointed!!!!

Staff was exceptional! Everyone was kind, professional and friendly making the trip very pleasant. Thank you!

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

We were delayed, which I think had to do with air traffic control. Otherwise, everything was great.

Delta made it easy, comfortable and timely. The crew was fantastic.

HORRIBLE, my initial flight was cancelled, they made me pay $200 extra dollars and that got cancelled as well! After 6 cancellations I decided to get a refund because I needed to get home to my babies. Out of $1000+ dollars they offered me only $40 in refund! Totally unacceptable! The flight that they cancelled I was able to fly it on another airline. I had to spend $400 on one way tickets just to get home! I’m still getting the runaround.

I wish there were outlets to charge my iPhone. The crew was great; we had a female pilot who was great with explaining what was happening and delays,

Great flight. On time boarding. Smooth flight and on time arrival at EWR. The flight crew was marvelous and there was a great selection of movies on the entertainment system. Our bags were at the carousel before we got there. Another excellent flight from United.

Very turbulent trip made it pretty bearable, plus the lack of refreshments served and the lack of any air conditioning before takeoff which took an hour or more.

They brought an empty plane to the gate. Then a flight delay was announced for maintenance and waiting on a part. I was then put on a flight to San Francisco instead with a connecting flight to my final destination. Arrived at my final destination 2 hours late.

Flight team stood out for perzonal attention, kindness at bright cheery attitudes at 8am. Very helpful.

Premium Plus is a really good idea for longer flights

Flight was delayed only slightly before takeoff due to traffic control. However, the flight arrived early to ORD. Good flight. United has been very reliable for me.

The person I bought the ticket for didn’t make the flight.

During booking, I kept trying submitting my payment from the Mexican website and it didn't work. After I had the idea to change it to the Canadian website, it worked but I had to be charged the equivalent of 50 CAD more. I received the clear instruction that I would only be able to check-in at the airport and that it was impossible to select a seat 24 hours before departure, that I had to pay 144 CAD to do so, although not only was I able to check-in 24 hours before departure, but I could have selected my seats for free then. All in all, I almost threw $200 out the window due to misleading information. Besides, the app kept crashing, the information to get to the gate on the app was inaccurate, my gate was switched and I was only informed once in the air (luckily I had noticed the departure pannel), I was not addressed in my language beforehand and even if I tried I was immediately answered in English (which meant the crew understood but didn't want to answer accordingly), there was only one snack & beverage service on my medium haul flight and no beverage service on my short haul flight. To be fair, the planes were comfortable, the crew apart from the language issue was helpful, dynamic and engaging, the plane was clean and the directions were clear and direct. United has a lot of potential to be one of my favourite airlines, but the devil is in the details and a lot of them missed the target.

Trip delayed for 2 hours because of rain. We boarded and have to get down the flight and reboard again.

No enough space plus only allowing one laggage instead of two like other airlines.

It was good. But the gate team made me check my carry on when there was plenty of space for my luggage on the plane. Otherwise our trip was fine.

Qatar airways ,boarding arrangements at Hamid international airport could been better

Delayed, no updates, had a rewards number but was not working

Gate was overcrowded. Gate agents performed very well. Flight crew was top notch! Efficient & professional & courteous. Both meals not thermalized well. Dinner main dish was actually cold in the center. Almost inedible. Breakfast sandwich was lukewarm.

RIC Staff was not enough. Elderly passengers had to wait 30 minutes to deplane, so we could board and still had to walk as no chairs were provided. And, passenger in front of my seat assignment rammed seat against my legs entire flight time. Was mildly bruised and left thigh still sore.

Flight was cancelled 3 hrs AFTER etd. Thetefore Missed connection from JFK to New Zealand . No accommodation provided… This cost ne aporox 1000 USD in extra expenses and turned whst should have been a 24 hr trip ftom Boston - New Zealand into a VERY expensive , late 70+ hr nightmare … Complete nonsense!!!

Overall fine, but the delay was annoying and the reasons for the delay were not communicated. The crew on board were phenomenal!

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

didn't order food on board. there's no way to hold a water botton on the way. otherwise it was a pleasant flight, thanks to the crew.

Even though there was a delay the crew was exceptional.

The flight was on time, the crew is friendly, and the seat was nice and wide compared to some other airlines. (the KAYAK survey should allow for the response, not applicable, because I did not have any food or take advantage of the entertainment)

A Spirit agent caused me to miss my flight. The company has not responded for request of refund. Stay away from Spirit.

It was good. It will be nice one check Baggage cost and picking seats were free.

Sprit being a value airlines providing flights for less prices, does its basic job. Flight was on time and ride was comfortable. Its did take off and landed on time. Luggage took sometime to arrive at carousal but that could be Newark airport issue.

Worst every experience travelling with Family. So much delayed while going and returning both. All airlines were time except this. not sure Spirit operational issues. No recommend Spirit. It may spoil your entire trip. Rather spent extra $ and book better airlines.

Horrible. They canceled the flight and didn’t offer much help

Canceled flight without any explanation at last moment. No replacement options. Not a weather related event. Completely messed up our holiday plans.

Very bad. Our flight was canceled and we need to rebook another flight which was in two hours after we’ve known about cancelation. It changed our plans. We had financial and other loses. Nobody did reimbursement to us.

Very well recently! Frontier is improving and less harrassing customer on luggages! Positive!

Good for a budget airline! It was easy to get on, staff was really nice. Can’t say anything about the food or entertainment because it wasn’t available, which is fine.

I am writing to express my disappointment with my recent Frontier Airlines flight. I was charged $99 at the gate because my bag was said to be too large, yet once onboard there was no available overhead bin space, and I was required to place the bag under the seat in front of me anyway. This made the charge feel unnecessary and unfair. Additionally, before the flight even took off, I was asked to move from the seat I paid for into a middle seat so another passenger and her cat could have my seat to themselves. I was not offered compensation or an explanation for being moved from a paid seat. Between the unexpected bag fee and being forced to give up my seat, this experience fell well below acceptable customer service standards. I would appreciate a review of this situation and appropriate compensation.

It was costly and difficult to check in. $85 to take a small suitcase with me, carry on or checked and $75 on the return trip, Plus $25 if I didn't check my self in check in $25, because I couldn't do it on the kiosk. Small very uncomfortable seats, waited on the runway for near an hour each way. It was my worst flight to date.

It was ok. It was expensive to check 2 bags ($75.00 per bag), and then it took a long time to wait for shuttle to take us from one terminal to the terminal where the plane was taking off at LAX. And all of this for a flight where we had to pay for any food or drink that was not water.

It didn’t happen. I booked it and then was told it wasn’t available and then forced to pay far higher prices for a worse option

A 630departure flight Delayed 6hours! They changed my gate, I moved to the new gate. Had our flight on the screen for 12noon departure. I go get above to eat, check screen again and the flight was gone, no notice no announcement, nothing!! They sent my bag on the flight I wasn’t on, got it back to me 3days later. Thank goodness they did refund my money but I will NEVER fly them again.

Due to weather, my flight was delayed, further delayed, then canceled. I eventually got through to a support person who helped me find a different route out of MSP, but to get to DIA, they didn't want to, but eventually did help with the connection ticket purchase. But even this replacement flight was delayed time and time again, and I would have missed my connecting flights and I didn't want to get stuck in a layover city, so after 12 hours at the airport with two young boys who were very tired, we just cancelled our plans and spent the week at home, instead of Nana's.

Plane and crew on board were fine. Everything else was terrible.

The third party booking with cheapflightsfares was awful. Kayak should NOT partner with them. They sold me a bundle including seat selection and carry-on, but did not book the carry-ons with Frontier, so I’m out of pocket for $414 more while I await resolution.

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

Information on your arrival and departure airports