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$70+ Cheap flights from Newark (EWR) to St. Louis (STL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/16. Fares are subject to change and may not be available on all flights or dates of travel.
EWR — STL
Apr 27 — May 41
Mon 4/27
Mon 5/4
1 adult, Economy
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Cheapflights Tip: The best prices from Newark to Lambert-St Louis are usually found in October or May, booked 72 days in advance, depart on a Saturday or Wednesday and return on a Thursday

Cheap flight deals from Newark to St. Louis

Cheapest flights from Newark to St. Louis
Explore the most affordable flight options available from Newark to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 28, 2026.

This United Airlines deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/113:07 pm
EWR
-
STL
1 stop5h 15m
United Airlines
Thu 4/166:15 am
STL
-
EWR
Nonstop2h 36m
United Airlines
Deal found 3/24$350
This Delta deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/141:28 pm
EWR
-
STL
1 stop5h 16m
Delta
Sun 4/196:00 am
STL
-
EWR
1 stop5h 22m
Delta
Deal found 3/23$351
This United Airlines deal was found by Cheapflights users on 3/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/3010:17 pm
EWR
-
STL
Nonstop2h 28m
United Airlines
Sun 8/26:01 am
STL
-
EWR
Nonstop2h 29m
United Airlines
Deal found 3/23$352
This Kiwi.com deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/710:29 pm
EWR
-
STL
2 stops25h 56m
Frontier
Thu 4/96:29 pm
STL
-
EWR
1 stop5h 47m
Frontier
Deal found 3/25$353
This United Airlines deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/136:50 pm
EWR
-
STL
1 stop5h 21m
United Airlines
Wed 4/156:15 am
STL
-
EWR
Nonstop2h 36m
United Airlines
Deal found 3/24$354
This United Airlines deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/610:07 pm
EWR
-
STL
Nonstop2h 28m
United Airlines
Tue 6/96:00 am
STL
-
EWR
Nonstop2h 29m
United Airlines
Deal found 3/27$355
This Kiwi.com deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/75:50 am
EWR
-
STL
1 stop5h 40m
Multiple Airlines
Tue 4/74:59 pm
STL
-
EWR
1 stop15h 02m
Multiple Airlines
Deal found 3/24$356
This Delta deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/96:00 am
EWR
-
STL
1 stop4h 31m
Delta
Sat 7/116:04 pm
STL
-
EWR
1 stop4h 21m
Delta
Deal found 3/26$357
This United Airlines deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/159:59 pm
EWR
-
STL
Nonstop2h 58m
United Airlines
Fri 4/1711:37 am
STL
-
EWR
Nonstop2h 36m
United Airlines
Deal found 3/25$358
This Kiwi.com deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/125:50 am
EWR
-
STL
1 stop5h 48m
Multiple Airlines
Thu 4/168:06 pm
STL
-
EWR
2 stops15h 53m
Multiple Airlines
Deal found 3/24$359
This Kiwi.com deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/610:29 pm
EWR
-
STL
1 stop13h 01m
Multiple Airlines
Tue 4/74:59 pm
STL
-
EWR
2 stops13h 52m
Multiple Airlines
Deal found 3/24$360
This Kiwi.com deal was found by Cheapflights users on 3/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/91:30 pm
EWR
-
STL
1 stop10h 55m
Multiple Airlines
Sun 4/1211:33 am
STL
-
EWR
2 stops34h 56m
Multiple Airlines
Deal found 3/24$361

Find flight deals from Newark to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Newark (EWR) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$350
(United Airlines)

One-way from

$70
(Priceline)

Popular in

March

Cheapest in

October

Average price

$471

Good round-trip deal

$395 or less

Good one-way deal

$171 or less
Provider with most accurate pricing for Newark-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Newark-Lambert-St Louis flights.
Search Deals
From Newark to Lambert-St Louis
Search Deals
One-way flight from Newark to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($43 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals
Price to beat on a round-trip flight from Newark to Lambert-St Louis.
Search Deals
Price to beat on a one-way flight from Newark to Lambert-St Louis.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Newark 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, Cheapflights users made 2,558,603 searches. Data last updated March 28, 2026.
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

Cheapest round-trip

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

Tue 5/5

9:59 pm-11:57 pm

Nonstop2h 58m

Lambert-St Louis

Fri 5/8

6:15 am-9:49 am

Nonstop2h 34m

$364

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

Fri 4/17

9:59 pm-11:57 pm

Nonstop2h 58m

Lambert-St Louis

Wed 4/22

6:15 am-9:51 am

Nonstop2h 36m

$370

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

Wed 7/22

8:30 am-2:35 pm

1 stop7h 05m

Lambert-St Louis

Sun 7/26

6:30 am-11:56 am

1 stop4h 26m

$387

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

Tue 4/14

9:59 pm-11:57 pm

Nonstop2h 58m

Lambert-St Louis

Fri 4/17

7:45 am-3:00 pm

1 stop6h 15m

$390

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

Fri 4/24

4:50 pm-9:52 pm

1 stop6h 02m

Lambert-St Louis

Sun 4/26

6:15 am-9:51 am

Nonstop2h 36m

$394
Quickest round-trip

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

Wed 7/22

10:17 pm-11:45 pm

Nonstop2h 28m

Lambert-St Louis

Sun 7/26

6:01 am-9:30 am

Nonstop2h 29m

$397

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

Thu 5/21

10:07 pm-11:35 pm

Nonstop2h 28m

Lambert-St Louis

Mon 5/25

6:00 am-9:29 am

Nonstop2h 29m

$397

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

Sun 4/12

6:00 am-9:46 am

1 stop4h 46m

Lambert-St Louis

Mon 4/13

5:59 pm-11:03 pm

1 stop4h 04m

$403

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

Mon 4/13

2:24 pm-9:13 pm

1 stop7h 49m

Lambert-St Louis

Wed 4/15

6:15 am-9:51 am

Nonstop2h 36m

$407

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

Mon 4/13

9:59 pm-11:57 pm

Nonstop2h 58m

Lambert-St Louis

Thu 4/16

9:10 am-4:30 pm

1 stop6h 20m

$410

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Showing 1-10 of 23 resultsSorted by cheapest first
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Compare providers for flights from Newark to St. Louis

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Newark to St. Louis in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
Trip.comPrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Newark Airport-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Newark Airport-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Newark Airport-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Newark Airport-St. Louis flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Newark Airport-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Newark to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Newark with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

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

Use this chart to determine the optimal time to book a round-trip flight from Newark to St. Louis. Price data was last updated on March 13, 2026.

Booking 72 days in advance of your planned departure date is, on average, the best time to get cheap flights from Newark Airport to St. Louis. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Newark Airport to St. Louis?

Currently, June is the cheapest month in which you can book a flight from Newark Airport to St. Louis (average of $180). Flying from Newark Airport to St. Louis in January is currently the most expensive (average of $311). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from EWR to STL?

Find hourly flight availability from Newark to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 28, 2026.

It’s typically best to fly out from Newark Airport to St. Louis in the evening. Doing so could potentially save you 22% on the flight price compared to flying at noon, which is usually more expensive.

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

Use this chart to determine the cheapest time to fly round-trip from Newark to St. Louis. Price data was last updated on March 23, 2026.

Travelers seeking maximum savings on their Newark Airport to St. Louis flight should consider departing on Saturday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Newark Airport to St. Louis?

The best insider tips for Newark Airport to St. Louis flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Newark Airport to St. Louis trip
Our travel experts
Brandon Schultz

Brandon Schultz

Expert on EWR

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Read more
Taryn White

Taryn White

Expert on STL

Taryn White is a freelance travel writer, digital creator, and travel advisor who has visited nearly 100 countries and all 50 states. She’s familiar with many airports and enjoys beach hopping, boutique hotels, spa experiences, and exploring local culture. Her work has appeared in Travel + Leisure, Condé Nast Traveler, National Geographic, Smithsonian Magazine, AFAR, and more.

Read more

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated March 28, 2026.
Read through reviews of airlines operating flights from Newark Airport to St. Louis, such as Delta,United Airlines, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,356 reviews

Overall

7.9

Crew

8.5

Boarding

8.1

Food

7.2

Comfort

7.9

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Kymberlee,Oct 2024

JFK - ATL

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.
Delta
7.9
Good
8,356 reviews
Delta
7.9
Good
8,356 reviews

Overall

7.9

Crew

8.5

Boarding

8.1

Food

7.2

Comfort

7.9

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Kymberlee,Oct 2024

JFK - ATL

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.
United Airlines
7.4
Good
9,499 reviews
Delta
7.9
Good
8,356 reviews

Overall

7.9

Crew

8.5

Boarding

8.1

Food

7.2

Comfort

7.9

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Kymberlee,Oct 2024

JFK - ATL

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.
American Airlines
7.1
Good
11,520 reviews
Delta
7.9
Good
8,356 reviews

Overall

7.9

Crew

8.5

Boarding

8.1

Food

7.2

Comfort

7.9

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Kymberlee,Oct 2024

JFK - ATL

Overall it was good on the flight. Before the flight with checking the bag at JFK was a nightmare. It took way too long and the Delta concierge was very rude to everyone. But other than that it was fine.

Related info for your journey

Find useful and relevant information for your journey from Newark to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to St. Louis from Newark?

    Lambert-St Louis (STL), located 12.7 mi from the city center, is the airport you fly into when you book flights from Newark to St. Louis. 3 airlines have flights to Lambert-St Louis from Newark on a regular basis. Booking flights from Newark to Lambert-St Louis should not be difficult; the airport handles an average of 2 inbound flights from Newark per day.

  • How long is the flight from Newark Airport to St. Louis?

    Airlines like United Airlines and Delta fly from Newark Airport to St. Louis in about 2h 58m. The time it takes to get you to your destination can typically vary by up to 4h 07m. Newark Airport and St. Louis are separated by a distance of 869 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Newark Airport to St. Louis round-trip?

    Delta, at $174, was found to be the cheapest airline from Newark Airport to St. Louis.Alternate airlines to your destination round-trip include American Airlines and United Airlines. Delta is priced at 56% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Newark Airport to St. Louis one-way?

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $68. Spirit Airlines flights start at $71 while deals on American Airlines start at $108 one-way.

  • What are the most reliable airlines from Newark Airport to St. Louis?

    Before booking your flight to St. Louis from Newark Airport, check out the most reliable airlines to get you to your destination on time: Austrian Airlines (73%), Lufthansa (73%), United Airlines( 72%).

  • What are the cheapest flights from Newark Airport to St. Louis?

    The cheapest flight price from Newark Airport to St. Louis is $136. On average you can expect to pay $348. The most popular route, (Newark - Lambert-St Louis), can usually be booked for $182.

  • Can I find deals for flights from Newark to St. Louis that include hotel bookings?

    Yes. In addition to deals on Newark to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Newark to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Newark to St. Louis.

  • Can I find deals for business class flights from Newark to St. Louis?

    Yes. Cheapflights offers flight deals from Newark to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, June is the cheapest month in which you can book a flight from Newark Airport to St. Louis (average of $180). Flying from Newark Airport to St. Louis in January is currently the most expensive (average of $311). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Fenton
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Wentzville
Glencoe
Chesterfield
Alton
Farmington
Festus

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Top 3 airlines flying from Newark to St. Louis

Discover the top 3 airlines that operate flights from Newark to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$174Average$352FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$241Average$367FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$248Average$419FlexibilityNo cancel feeOn-time69%

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