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$126+ Cheap flights from New Windsor to St. Louis (SWF - 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 2/6. Fares are subject to change and may not be available on all flights or dates of travel.
SWF — STL
Feb 14 — Feb 211
Sat 2/14
Sat 2/21
1 adult, Economy
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Cheap flight deals from Stewart to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Stewart (SWF) 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 January 15, 2026.

Most accurate provider

Expedia
2 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$435
(Kiwi.com)

One-way from

$126
(Kiwi.com)

Popular in

November

Cheapest in

March

Average price

$331
Provider with most accurate pricing for New Windsor Stewart-Lambert-St Louis flight deals.
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Provider most trusted by Cheapflights users for New Windsor Stewart-Lambert-St Louis flights.
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From New Windsor Stewart to Lambert-St Louis
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One-way flight from New Windsor Stewart to Lambert-St Louis
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Highest demand for flights based on searches. 14% potential increase in price ($58 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Find flight deals from Stewart to St. Louis

Cheapest flights from Stewart to St. Louis
Explore the most affordable flight options available from Stewart to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 15, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/15. 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.
Sat 2/141:29 pm
SWF
-
STL
1 stop11h 30m
Multiple Airlines
Sun 2/153:49 pm
STL
-
SWF
1 stop17h 25m
Multiple Airlines
Deal found 1/15$435
This Kiwi.com deal was found by Cheapflights users on 1/14. 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 3/1911:48 am
SWF
-
STL
1 stop20h 34m
Multiple Airlines
Sun 3/224:51 pm
STL
-
SWF
1 stop15h 06m
Multiple Airlines
Deal found 1/14$453
This Kiwi.com deal was found by Cheapflights users on 1/14. 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.
Fri 2/1311:04 am
SWF
-
STL
1 stop14h 23m
Multiple Airlines
Sun 2/153:49 pm
STL
-
SWF
1 stop17h 25m
Multiple Airlines
Deal found 1/14$538
This Kiwi.com deal was found by Cheapflights users on 1/15. 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 3/1911:48 am
SWF
-
STL
1 stop12h 31m
Multiple Airlines
Sat 3/218:53 pm
STL
-
SWF
1 stop13h 15m
Multiple Airlines
Deal found 1/15$790

Cheapflights Fare Finder

 
Customize your flight search to find flights from Stewart 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 January 15, 2026.
Use the filters below to find and compare flights from New Windsor to St. Louis that are best for you.

Fly from

Stewart

Fly to

St. Louis

Route

Depart

Return

Price

New WindsorSt. Louis

SWF - STL

SWFSTL

New Windsor Stewart

Sat 2/14

1:29 pm-11:59 pm

1 stop11h 30m

Lambert-St Louis

Sun 2/15

3:49 pm-10:14 am

1 stop17h 25m

$435

New WindsorSt. Louis

SWF - STL

SWFSTL

New Windsor Stewart

Thu 3/19

11:48 am-7:22 am

1 stop20h 34m

Lambert-St Louis

Sun 3/22

4:51 pm-8:57 am

1 stop15h 06m

$453

New WindsorSt. Louis

SWF - STL

SWFSTL

New Windsor Stewart

Fri 2/13

11:04 am-12:27 am

1 stop14h 23m

Lambert-St Louis

Sun 2/15

3:49 pm-10:14 am

1 stop17h 25m

$540

New WindsorSt. Louis

SWF - STL

SWFSTL

New Windsor Stewart

Thu 3/19

11:48 am-11:19 pm

1 stop12h 31m

Lambert-St Louis

Sat 3/21

8:53 pm-11:08 am

1 stop13h 15m

$790

New WindsorSt. Louis

SWF - STL

SWFSTL

New Windsor Stewart

Fri 2/6

12:11 pm-11:33 pm

2 stops12h 22m

$126

New WindsorSt. Louis

SWF - STL

SWFSTL

New Windsor Stewart

Thu 2/26

11:48 am-11:59 pm

1 stop13h 11m

$136

New WindsorSt. Louis

SWF - STL

SWFSTL

New Windsor Stewart

Sun 2/8

11:48 am-11:33 pm

1 stop12h 45m

$200

New WindsorSt. Louis

SWF - STL

SWFSTL

New Windsor Stewart

Mon 3/2

12:11 pm-11:59 pm

2 stops12h 48m

$220

New WindsorSt. Louis

SWF - STL

SWFSTL

New Windsor Stewart

Sun 1/25

12:13 pm-12:50 pm

2 stops25h 37m

$235

New WindsorSt. Louis

SWF - STL

SWFSTL

New Windsor Stewart

Fri 1/30

12:11 pm-11:33 pm

2 stops12h 22m

$237

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/14

Showing 1-10 of 14 results
1
2
  • Most accurate provider: When it comes to deals on New Windsor-St. Louis flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on New Windsor-St. Louis flight deals on Cheapflights vs. Expedia 90-95% of the time. Price accuracy is based on data collected from New Windsor-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on New Windsor-St. Louis flights, Cheapflights users trust Expedia the most. Expedia 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 New Windsor-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 Stewart to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Stewart 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 New Windsor to St. Louis

What is the cheapest month to book a flight from New Windsor to St. Louis?

Currently, March is the cheapest month in which you can book a flight from New Windsor to St. Louis (average of $59). Flying from New Windsor to St. Louis in December is currently the most expensive (average of $257). 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.

Related info for your journey

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

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Stewart 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 New Windsor to St. Louis?

    Currently, March is the cheapest month in which you can book a flight from New Windsor to St. Louis (average of $59). Flying from New Windsor to St. Louis in December is currently the most expensive (average of $257). 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
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
Chesterfield
Alton
Farmington
Festus

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