EWR - STL

$68 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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$353
Typical prices: $557-$329
Frontier
Thu 4/16Sun 4/19
EWR - STL • 1 stop
Cheapest non-stop
$356
Typical prices: $643-$330
United Airlines
Tue 4/21Thu 4/23
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 $356 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with United Airlines. Average duration is 2h 56m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Avoid delays
Most punctual • 86% on-time
Best time • Fewest delays
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $366 (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
+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 St. Louis!
Flight Deals
Booking Insights
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

Thu, Apr 16 - Sun, Apr 19
Multiple Airlines Logo
10:29 pm - 6:50 am
EWR
-
STL
9h 21m
1 stop
Multiple Airlines Logo
4:59 pm - 12:22 pm
STL
-
EWR
18h 23m
1 stop
$353Multiple Airlines
Wed, Apr 22 - Fri, Apr 24
Delta Logo
1:15 pm - 4:42 pm
EWR
-
STL
4h 27m
1 stop
Delta Logo
6:50 pm - 12:51 am
STL
-
EWR
5h 01m
1 stop
$356Delta
Sat, Apr 25 - Tue, Apr 28
United Airlines Logo
9:59 pm - 11:57 pm
EWR
-
STL
2h 58mnonstop
United Airlines Logo
5:24 pm - 8:59 pm
STL
-
EWR
2h 35mnonstop
$357United Airlines
Wed, Apr 22 - Thu, Apr 23
United Airlines Logo
9:59 pm - 11:57 pm
EWR
-
STL
2h 58mnonstop
United Airlines Logo
6:15 am - 9:51 am
STL
-
EWR
2h 36mnonstop
$359United Airlines
Sat, May 23 - Mon, May 25
Multiple Airlines Logo
2:50 pm - 12:21 am
EWR
-
STL
10h 31m
1 stop
Multiple Airlines Logo
4:19 pm - 1:45 pm
STL
-
EWR
20h 26m
1 stop
$360Multiple Airlines
Fri, May 1 - Sun, May 3
Frontier Logo
10:29 pm - 6:50 am
EWR
-
STL
9h 21m
1 stop
Frontier Logo
11:28 am - 9:29 pm
STL
-
EWR
9h 01m
1 stop
$361Frontier
Sun, Apr 12 - Tue, Apr 14
Frontier Logo
5:59 am - 10:38 am
EWR
-
STL
5h 39m
1 stop
Frontier Logo
4:59 pm - 12:59 pm
STL
-
EWR
19h 00m
1 stop
$362Frontier
Sat, Apr 25 - Sun, Apr 26
United Airlines Logo
9:59 pm - 11:57 pm
EWR
-
STL
2h 58mnonstop
United Airlines Logo
6:15 am - 9:51 am
STL
-
EWR
2h 36mnonstop
$363United Airlines
Fri, May 1 - Sun, May 3
United Airlines Logo
9:59 pm - 11:57 pm
EWR
-
STL
2h 58mnonstop
United Airlines Logo
6:15 am - 9:49 am
STL
-
EWR
2h 34mnonstop
$364United Airlines
Sat, Apr 25 - Mon, Apr 27
Multiple Airlines Logo
5:05 pm - 11:19 pm
EWR
-
STL
7h 14m
1 stop
Multiple Airlines Logo
8:17 pm - 12:59 pm
STL
-
EWR
15h 42m
2 stops
$365Multiple 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.

How much is a round-trip flight from Newark Airport to St. Louis?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Newark Airport to St. Louis departing in April.

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 Friday 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$68
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

  • 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 $68 for a one-way ticket and $353 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 $354 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 $421 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 $184 or less one-way and $397 or less round-trip.

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 8368 reviews
7.9Comfort
7.2Food
7.8Entertainment
8.1Boarding
8.5Crew
Airline reviews

This was the worse experience. They delayed our flight twice and we still had to find another flight to get home sooner which was alos delayed. Also, the flight attendant named Ginny on DL9890 leaving at 4:13pm on 3/23/26 was extremely rude.

2.0 MediocreAliya, Mar 2026
JFK - ATL
Read more Delta reviews

This was the worse experience. They delayed our flight twice and we still had to find another flight to get home sooner which was alos delayed. Also, the flight attendant named Ginny on DL9890 leaving at 4:13pm on 3/23/26 was extremely rude.

I love Delta the flight attendants were personable and the flight arrived 1/2 earlier thanks expected. All a plus. The gate agent was a bit flustered but even with that I still had a good experience. Her supervisor assisted me.

I am still at the Airport! Delayed Delayed and Delyaed

The first class flight attendant was awful to everyone. Very rude; no customer service. She should not be working in first class.

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

They promise free wi-fi prior to boarding and then once on board you are informed you have to purchase wifi even after being a mileagePlus member.

Both our flights were delayed. Almost didn’t get in the second flight. Staff was rude to the bone.

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.

We called Kayak for a change due to the TSA situation in Atlanta. What we got was a canceled return flight (in error) and we had to find the mistake. Not happy with Kayak who blamed it on AA.

My flight from LGA was cancelled and my rebooked flight from JFK was delayed numerous times. I will now be getting home after 2am.

Flight was delayed half hour before boarding, but when I checked flight aware the plane that would Pick us up had a delay of more than an hour. AA should let us know in advance to avoid waiting several hours in the airport

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!

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

Information on your arrival and departure airports