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$66+ Cheap flights from St. Louis (STL) to Newark (EWR)

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 4/22. Fares are subject to change and may not be available on all flights or dates of travel.
STL — EWR
Apr 5 — Apr 121
Sun 4/5
Sun 4/12
1 adult, Economy
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Cheapflights Tip: The best prices from Lambert-St Louis to Newark are usually found in August or September, booked 48 days in advance, depart on a Friday or Thursday and return on a Saturday

Cheap flight deals from St. Louis to Newark

Cheapest flights from St. Louis to Newark
Explore the most affordable flight options available from St. Louis to Newark. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 6, 2026.

This Kiwi.com deal was found by Cheapflights users on 3/6. 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.
Wed 4/228:23 pm
STL
-
EWR
1 stop27h 53m
Frontier
Tue 4/2810:29 pm
EWR
-
STL
1 stop9h 21m
Frontier
Deal found 3/6$128
This Kiwi.com deal was found by Cheapflights users on 3/3. 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.
Wed 3/1811:32 am
STL
-
EWR
1 stop8h 58m
Frontier
Mon 3/2310:30 pm
EWR
-
STL
1 stop13h 02m
Frontier
Deal found 3/3$131
This Kiwi.com deal was found by Cheapflights users on 3/3. 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 3/3111:27 am
STL
-
EWR
1 stop12h 36m
Multiple Airlines
Tue 4/75:50 am
EWR
-
STL
1 stop5h 40m
Multiple Airlines
Deal found 3/3$133
This Kiwi.com deal was found by Cheapflights users on 3/5. 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 3/3111:27 am
STL
-
EWR
1 stop8h 56m
Frontier
Mon 4/610:29 pm
EWR
-
STL
1 stop13h 01m
Frontier
Deal found 3/5$142
This Kiwi.com deal was found by Cheapflights users on 3/3. 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 3/3111:27 am
STL
-
EWR
1 stop8h 56m
Frontier
Thu 4/95:59 am
EWR
-
STL
1 stop12h 35m
Frontier
Deal found 3/3$146
This Kiwi.com deal was found by Cheapflights users on 3/6. 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 5/118:13 pm
STL
-
EWR
1 stop24h 16m
Frontier
Fri 5/1510:29 pm
EWR
-
STL
1 stop9h 21m
Frontier
Deal found 3/6$153
This Kiwi.com deal was found by Cheapflights users on 3/4. 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.
Wed 4/228:23 pm
STL
-
EWR
1 stop27h 53m
Multiple Airlines
Fri 4/246:37 pm
EWR
-
STL
1 stop13h 13m
Multiple Airlines
Deal found 3/4$158
This Frontier deal was found by Cheapflights users on 3/3. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/3111:27 am
STL
-
EWR
1 stop8h 56m
Frontier
Tue 4/75:59 am
EWR
-
STL
1 stop5h 31m
Frontier
Deal found 3/3$160
This Kiwi.com deal was found by Cheapflights users on 3/3. 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 4/208:23 pm
STL
-
EWR
1 stop24h 06m
Frontier
Sun 5/310:29 pm
EWR
-
STL
1 stop9h 21m
Frontier
Deal found 3/3$162

Find flight deals from St. Louis to Newark

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Newark (EWR). 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 6, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$128
(Kiwi.com)

One-way from

$66
(Kiwi.com)

Popular in

February

Cheapest in

August

Average price

$390

Good round-trip deal

$384 or less

Good one-way deal

$206 or less
Provider with most accurate pricing for Lambert-St Louis-Newark flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Newark flights.
Search Deals
From Lambert-St Louis to Newark
Search Deals
One-way flight from Lambert-St Louis to Newark
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($21 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 0% potential price decrease ($3 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 Lambert-St Louis to Newark.
Search Deals
Price to beat on a one-way flight from Lambert-St Louis to Newark.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Newark 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 6, 2026.
Use the filters below to find and compare flights from St. Louis to Newark Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisNewark

STL - EWR

STLEWR

Lambert-St Louis

Wed 4/1

8:21 am-2:00 pm

1 stop4h 39m

Newark

Sat 4/4

9:59 pm-11:57 pm

Nonstop2h 58m

$276

St. LouisNewark

STL - EWR

STLEWR

Lambert-St Louis

Thu 4/30

7:45 am-3:21 pm

1 stop6h 36m

Newark

Tue 5/5

9:59 pm-11:57 pm

Nonstop2h 58m

$307

St. LouisNewark

STL - EWR

STLEWR

Lambert-St Louis

Fri 4/17

7:45 am-1:55 pm

1 stop5h 10m

Newark

Sun 4/19

9:59 pm-11:57 pm

Nonstop2h 58m

$327

St. LouisNewark

STL - EWR

STLEWR

Lambert-St Louis

Wed 4/8

7:45 am-3:00 pm

1 stop6h 15m

Newark

Mon 4/13

3:15 pm-9:13 pm

1 stop6h 58m

$335

St. LouisNewark

STL - EWR

STLEWR

Lambert-St Louis

Wed 4/15

6:15 am-9:51 am

Nonstop2h 36m

Newark

Sun 4/19

9:00 am-10:56 am

Nonstop2h 56m

$336

St. LouisNewark

STL - EWR

STLEWR

Lambert-St Louis

Wed 5/13

6:15 am-9:49 am

Nonstop2h 34m

Newark

Tue 5/26

10:07 pm-11:36 pm

Nonstop2h 29m

$338

St. LouisNewark

STL - EWR

STLEWR

Lambert-St Louis

Thu 4/2

7:45 am-2:00 pm

1 stop5h 15m

Newark

Sun 4/5

6:00 am-10:45 am

1 stop5h 45m

$338

St. LouisNewark

STL - EWR

STLEWR

Lambert-St Louis

Thu 5/14

7:45 am-2:00 pm

1 stop5h 15m

Newark

Tue 5/26

10:07 pm-11:36 pm

Nonstop2h 29m

$341

St. LouisNewark

STL - EWR

STLEWR

Lambert-St Louis

Fri 4/24

7:45 am-3:00 pm

1 stop6h 15m

Newark

Sun 4/26

9:59 pm-11:57 pm

Nonstop2h 58m

$362
Quickest round-trip

St. LouisNewark

STL - EWR

STLEWR

Lambert-St Louis

Thu 6/11

6:00 am-9:29 am

Nonstop2h 29m

Newark

Sun 6/14

10:07 pm-11:35 pm

Nonstop2h 28m

$367

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/2

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3

Compare providers for flights from St. Louis to Newark

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 St. Louis to Newark in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
MytripPrice Accuracy3 starsTrust 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 St. Louis-Newark Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Newark Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Newark Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Newark Airport 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 St. Louis-Newark Airport 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 St. Louis to Newark

Have a flexible travel schedule? Discover the best time to fly to Newark from St. Louis 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 St. Louis to Newark Airport

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

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Newark. Price data was last updated on February 27, 2026.

Booking 48 days in advance of your planned departure date is, on average, the best time to get cheap flights from St. Louis to Newark Airport. 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 St. Louis to Newark Airport?

Currently, August is the cheapest month in which you can book a flight from St. Louis to Newark Airport (average of $129). Flying from St. Louis to Newark Airport in February is currently the most expensive (average of $273). 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 STL to EWR?

Find hourly flight availability from St. Louis to Newark. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 6, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from St. Louis to Newark Airport as you normally would.

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

Get insights into the airlines that provide service to Newark. 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 Newark. Reviews last updated March 6, 2026.
Read reviews from past customers who have flown Delta, United Airlines, and American Airlines from St. Louis to Newark Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,263 reviews

Crew

8.5

Overall

7.9

Entertainment

7.8

Food

7.2

Boarding

8.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Lucy,Nov 2023

ATL - JFK

On time flights; courteous staff; efficient boarding system! Thank you!
Delta
7.9
Good
8,263 reviews
Delta
7.9
Good
8,263 reviews

Crew

8.5

Overall

7.9

Entertainment

7.8

Food

7.2

Boarding

8.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Lucy,Nov 2023

ATL - JFK

On time flights; courteous staff; efficient boarding system! Thank you!
United Airlines
7.4
Good
9,403 reviews
Delta
7.9
Good
8,263 reviews

Crew

8.5

Overall

7.9

Entertainment

7.8

Food

7.2

Boarding

8.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Lucy,Nov 2023

ATL - JFK

On time flights; courteous staff; efficient boarding system! Thank you!
American Airlines
7.1
Good
11,397 reviews
Delta
7.9
Good
8,263 reviews

Crew

8.5

Overall

7.9

Entertainment

7.8

Food

7.2

Boarding

8.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Lucy,Nov 2023

ATL - JFK

On time flights; courteous staff; efficient boarding system! Thank you!
Spirit Airlines
6.3
Okay
8,499 reviews
Delta
7.9
Good
8,263 reviews

Crew

8.5

Overall

7.9

Entertainment

7.8

Food

7.2

Boarding

8.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Lucy,Nov 2023

ATL - JFK

On time flights; courteous staff; efficient boarding system! Thank you!
Frontier
5.7
Fair
3,041 reviews
Delta
7.9
Good
8,263 reviews

Crew

8.5

Overall

7.9

Entertainment

7.8

Food

7.2

Boarding

8.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Lucy,Nov 2023

ATL - JFK

On time flights; courteous staff; efficient boarding system! Thank you!

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Newark. 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 from for flights from St. Louis to Newark?

    Lambert-St Louis (STL) is the airport you will fly out of if you book a flight from St. Louis to Newark. You should not have trouble finding flights to Newark from Lambert-St Louis; the airport handles an average of 1 outbound flight to Newark per day. You should also have plenty of airline options to choose from since 5 airlines have flights from the St. Louis airport to Newark. It is only a 12.7 mi journey to Lambert-St Louis (STL) from St. Louis’s city center.

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

    Departing from St. Louis to Newark Airport will take you 4h 39m. The distance between St. Louis and Newark Airport is about 869 mi.

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

    Currently priced at $73, Spirit Airlines will fly you from St. Louis to Newark Airport and back. In addition to Spirit Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Frontier and Delta - these airlines can fly you to your destination from $87 and $207, respectively. Spirit Airlines is 80% cheaper than the average price of flights available within the next 90 days to this destination.

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

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $72. Users have also found prices from $114 and $120 on Delta and United Airlines, respectively.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from St. Louis to Newark Airport on time: Austrian Airlines (80%), Lufthansa (80%), United Airlines (75%).

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

    Looking for the cheapest flight from St. Louis to Newark Airport? While on average our users pay $448, our data indicates the cheapest price to be $171. The most popular route (Lambert-St Louis - Newark), is priced around $135.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from St. Louis to Newark 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 St. Louis to Newark Airport?

    Currently, August is the cheapest month in which you can book a flight from St. Louis to Newark Airport (average of $129). Flying from St. Louis to Newark Airport in February is currently the most expensive (average of $273). 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 Newark Airport?

Book flights to Newark Airport if you plan to visit one of these locations
Queens
Mahwah
Bronx
East Rutherford
Yonkers
Bethlehem
Secaucus
Elizabeth
Mount Laurel
North Bergen
Edgewater
Irvington
Seaside Heights
Absecon
Carle Place
Parsippany
Tannersville
Staten Island
Carteret
Stamford

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 5 airlines flying from St. Louis to Newark

Discover the top 5 airlines that operate flights from St. Louis to Newark. 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 6, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$73Average$161FlexibilityNo cancel feeOn-time65%
FrontierCheapest$87Average$209FlexibilityNo cancel feeOn-time62%
DeltaCheapest$207Average$327FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$216Average$344FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$255Average$381FlexibilityNo cancel feeOn-time69%

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