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Cheap flights from Newark Airport to St. Louis from $48

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Newark Airport to St. Louis departing on 1/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Newark Airport to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
7:45 am - 12:29 pm
EWR
-
STL
5h 44m1 stop
United Airlines Logo
7:00 am - 10:37 am
STL
-
EWR
2h 37mnonstop
$277United Airlines
Wed, Jan 21 - Sun, Jan 25
Multiple Airlines Logo
10:05 pm - 8:07 pm
EWR
-
STL
23h 02m2 stops
Multiple Airlines Logo
3:43 pm - 11:30 pm
STL
-
EWR
6h 47m1 stop
$282Multiple Airlines
Sun, Jan 4 - Fri, Jan 9
United Airlines Logo
9:54 pm - 11:43 pm
EWR
-
STL
2h 49mnonstop
United Airlines Logo
5:02 pm - 11:15 pm
STL
-
EWR
5h 13m1 stop
$285United Airlines
Thu, Dec 25 - Wed, Dec 31
Multiple Airlines Logo
5:25 am - 8:08 pm
EWR
-
STL
15h 43m2 stops
Multiple Airlines Logo
5:42 pm - 10:49 am
STL
-
EWR
16h 07m1 stop
$286Multiple Airlines
Mon, Jan 19 - Thu, Jan 22
Delta Logo
10:43 am - 2:48 pm
EWR
-
STL
5h 05m1 stop
Delta Logo
6:57 pm - 12:55 am
STL
-
EWR
4h 58m1 stop
$287Delta
Tue, Jan 13 - Thu, Jan 29
United Airlines Logo
9:57 pm - 11:59 pm
EWR
-
STL
3h 02mnonstop
United Airlines Logo
12:44 pm - 7:10 pm
STL
-
EWR
5h 26m1 stop
$291United Airlines
Wed, Jan 7 - Sat, Jan 24
Multiple Airlines Logo
6:32 pm - 10:56 am
EWR
-
STL
17h 24m1 stop
Multiple Airlines Logo
5:11 pm - 10:00 am
STL
-
EWR
15h 49m1 stop
$292Multiple Airlines
Mon, Jan 5 - Sat, Jan 10
United Airlines Logo
8:35 am - 10:41 am
EWR
-
STL
3h 06mnonstop
United Airlines Logo
7:00 am - 10:37 am
STL
-
EWR
2h 37mnonstop
$293United Airlines
Fri, Jan 30 - Sun, Feb 1
United Airlines Logo
12:42 pm - 5:43 pm
EWR
-
STL
6h 01m1 stop
United Airlines Logo
7:00 am - 10:37 am
STL
-
EWR
2h 37mnonstop
$294United Airlines
Thu, Jan 29 - Sat, Feb 7
Multiple Airlines Logo
3:30 pm - 10:34 pm
EWR
-
STL
8h 04m1 stop
Multiple Airlines Logo
5:42 pm - 10:49 am
STL
-
EWR
16h 07m1 stop
$295Multiple Airlines
Mon, Jan 19 - Thu, Jan 22

Frontier flights from Newark Airport to St. Louis

Our best Frontier deals on Newark Airport to St. Louis flight tickets
Frontier
Dec 17
EWR10:30 pmNewark
12h 10m
1 stop
STL9:40 amLambert-St Louis
Dec 18
STL10:42 amLambert-St Louis
9h 53m
1 stop
EWR9:35 pmNewark
$274
Find similar
Frontier
Dec 11
EWR10:30 pmNewark
12h 17m
1 stop
STL9:47 amLambert-St Louis
Dec 15
STL10:47 amLambert-St Louis
9h 48m
1 stop
EWR9:35 pmNewark
$293
Find similar
Frontier
Dec 14
EWR10:30 pmNewark
12h 22m
1 stop
STL9:52 amLambert-St Louis
Dec 21
STL10:57 amLambert-St Louis
9h 38m
1 stop
EWR9:35 pmNewark
$302
Find similar

United Airlines flights from Newark Airport to St. Louis

Our best United Airlines deals on Newark Airport to St. Louis flight tickets
United Airlines
Jan 21
EWR8:35 amNewark
3h 06m
STL10:41 amLambert-St Louis
Jan 23
STL6:40 pmLambert-St Louis
5h 05m
1 stop
EWR12:45 amNewark
$277
Find similar
United Airlines
Dec 25
EWR9:54 pmNewark
2h 49m
STL11:43 pmLambert-St Louis
Dec 31
STL5:02 pmLambert-St Louis
5h 13m
1 stop
EWR11:15 pmNewark
$285
Find similar
United Airlines
Jan 7
EWR9:57 pmNewark
3h 02m
STL11:59 pmLambert-St Louis
Jan 24
STL12:44 pmLambert-St Louis
5h 26m
1 stop
EWR7:10 pmNewark
$291
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Newark Airport to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated December 9, 2025.
Use the filters below to find and compare flights from Newark Airport to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

Wed 1/21

7:45 am-12:29 pm

1 stop5h 44m

Lambert-St Louis

Sun 1/25

7:00 am-10:37 am

Nonstop2h 37m

$277

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

Sun 1/4

10:05 pm-8:07 pm

2 stops23h 02m

Lambert-St Louis

Fri 1/9

3:43 pm-11:30 pm

1 stop6h 47m

$282

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

Thu 12/25

9:54 pm-11:43 pm

Nonstop2h 49m

Lambert-St Louis

Wed 12/31

5:02 pm-11:15 pm

1 stop5h 13m

$285

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

Mon 1/19

5:25 am-8:08 pm

2 stops15h 43m

Lambert-St Louis

Thu 1/22

5:42 pm-10:49 am

1 stop16h 07m

$286

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

Tue 1/13

10:43 am-2:48 pm

1 stop5h 05m

Lambert-St Louis

Thu 1/29

6:57 pm-12:55 am

1 stop4h 58m

$287

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

Wed 1/7

9:57 pm-11:59 pm

Nonstop3h 02m

Lambert-St Louis

Sat 1/24

12:44 pm-7:10 pm

1 stop5h 26m

$291

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

Mon 1/5

6:32 pm-10:56 am

1 stop17h 24m

Lambert-St Louis

Sat 1/10

5:11 pm-10:00 am

1 stop15h 49m

$292

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

Fri 1/30

8:35 am-10:41 am

Nonstop3h 06m

Lambert-St Louis

Sun 2/1

7:00 am-10:37 am

Nonstop2h 37m

$293

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

Thu 1/29

12:42 pm-5:43 pm

1 stop6h 01m

Lambert-St Louis

Sat 2/7

7:00 am-10:37 am

Nonstop2h 37m

$294

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

Mon 1/19

3:30 pm-10:34 pm

1 stop8h 04m

Lambert-St Louis

Thu 1/22

5:42 pm-10:49 am

1 stop16h 07m

$295

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to St. Louis from

How to get the cheapest flight ticket from Newark Airport to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to St. Louis?

In general, October is the cheapest month to fly from Newark Airport to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $343. The month of May is another great option to travel to St. Louis, with average flight prices from Newark Airport averaging around $363.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Wednesday when prices can be found for as low as $311. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $442. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Newark Airport in the morning is the least expensive time of day to depart. momondo users have found prices as low as $343 when looking at flights departing in the morning. In the evening is when there is more demand to fly to St. Louis, so prices are often more expensive at around $370 per ticket.

What is the cheapest Newark to Lambert-St Louis flight route?

Fly from Newark to Lambert-St Louis for the best Newark - Lambert-St Louis flight prices

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

You are more likely to see cheaper flights to St. Louis from Newark Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $391 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from Newark Airport for as low as $307 on momondo.

What cabin class options are available on Newark to Lambert-St Louis flights?

There are 4 cabin classes available to choose from on Newark to Lambert-St Louis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Newark Airport to St. Louis flight prices changed over time?

As of December 2025, prices for Newark Airport to St. Louis flights are approximately 23% cheaper when compared to flights at the same time last year.

When to book flights from Newark Airport to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Newark Airport to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Newark Airport to St. Louis (EWR to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Newark Airport to St. Louis

Best Price Found

$178

Fastest flight time

2h 41m

Direct flights

Every day

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from Newark Airport in the past 72 hours is $178. The best round-trip flight deal from Newark Airport to St. Louis found on momondo in the last 72 hours is $325.
The fastest flight from Newark Airport to St. Louis takes 2h 41m
Direct flights go from Newark Airport to St. Louis every day.
There is 1 airport near St. Louis: Lambert-St Louis (STL)
Search flight deals

  • How far is Newark to Lambert-St Louis by plane?

    Newark and Lambert-St Louis are 862.3 mi apart from one another. Flights usually cover this in 2h 49m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Newark Airport to Lambert-St Louis Airport?

    Prices for flights from Newark Airport to Lambert-St Louis Airport were last updated today.

  • How many operators does momondo search for flights from Newark Airport to Lambert-St Louis Airport?

  • How old do you have to be to fly from Newark Airport to Lambert-St Louis Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Newark Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The required travel and health documents for your Lambert-St Louis Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Newark Airport to St. Louis?

  • What is the most popular airline from Newark Airport to St. Louis?

Best airlines flying from Newark Airport to St. Louis

Compare and see reviews for airlines that fly from Newark Airport to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $152Free CancellationRating
6.3
8,168 reviews
Search Spirit Airlines flights
American AirlinesPriceFrom $196Free CancellationRating
7.2
11,045 reviews
Search American Airlines flights
DeltaPriceFrom $216Free CancellationRating
7.9
8,011 reviews
Search Delta flights
United AirlinesPriceFrom $245Free CancellationRating
7.4
9,089 reviews
Search United Airlines flights

  • United Airlines Flights From Newark Airport to St. Louis

    The lowest priced United Airlines flight from Newark Airport to St. Louis from the last 72 hours was $245. Generally, United Airlines has 16 flights on this route every week with an average price of $408. United Airlines is rated 7.4/10 by our users.

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Maryland Heights
O'Fallon
Florissant
Fenton
Wentzville
St. Peters
Collinsville
Alton
Farmington
Festus
Clayton
Glencoe
Edwardsville
Eureka
Litchfield
Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from New York to St. Louis?

Finding the right flight to St. Louis from New York is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to St. Louis quick and easy, saving you time and money.

Can I find flights from New York to St. Louis with flexible booking policies on momondo?

All flight searches from New York to St. Louis on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from New York to St. Louis?

Once all potential New York to St. Louis flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from New York to St. Louis right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of New York to St. Louis flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your St. Louis trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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