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$121+ 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 6/24. Fares are subject to change and may not be available on all flights or dates of travel.
SWF — STL
May 25 — Jun 11
Mon 5/25
Mon 6/1
1 adult, Economy
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Cheap 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 April 25, 2026.

This Kiwi.com deal was found by Cheapflights users on 4/20. 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 6/189:38 am
SWF
-
STL
1 stop15h 31m
Multiple Airlines
Sun 6/214:17 pm
STL
-
SWF
1 stop15h 32m
Multiple Airlines
Deal found 4/20$296
This Kiwi.com deal was found by Cheapflights users on 4/21. 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 6/199:39 am
SWF
-
STL
1 stop15h 30m
Multiple Airlines
Sun 6/214:17 pm
STL
-
SWF
1 stop15h 32m
Multiple Airlines
Deal found 4/21$327
This Kiwi.com deal was found by Cheapflights users on 4/24. 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.
Fri 5/229:41 am
SWF
-
STL
1 stop15h 16m
Multiple Airlines
Tue 5/266:33 pm
STL
-
SWF
2 stops15h 52m
Multiple Airlines
Deal found 4/24$339
This Kiwi.com deal was found by Cheapflights users on 4/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/59:39 am
SWF
-
STL
1 stop15h 18m
Multiple Airlines
Tue 6/96:31 pm
STL
-
SWF
2 stops15h 54m
Multiple Airlines
Deal found 4/23$349
This Kiwi.com deal was found by Cheapflights users on 4/22. 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 6/19:41 am
SWF
-
STL
1 stop15h 16m
Multiple Airlines
Thu 6/43:30 pm
STL
-
SWF
2 stops16h 19m
Multiple Airlines
Deal found 4/22$371
This Kiwi.com deal was found by Cheapflights users on 4/25. 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.
Sat 5/2312:05 pm
SWF
-
STL
2 stops12h 52m
Multiple Airlines
Sat 5/304:19 pm
STL
-
SWF
1 stop15h 39m
Multiple Airlines
Deal found 4/25$391
This Kiwi.com deal was found by Cheapflights users on 4/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/59:39 am
SWF
-
STL
1 stop15h 18m
Multiple Airlines
Sun 6/74:19 pm
STL
-
SWF
1 stop15h 30m
Multiple Airlines
Deal found 4/23$418
This Kiwi.com deal was found by Cheapflights users on 4/20. 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 5/2312:05 pm
SWF
-
STL
2 stops12h 52m
Multiple Airlines
Sun 6/144:17 pm
STL
-
SWF
1 stop15h 32m
Multiple Airlines
Deal found 4/20$433

Find 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 April 25, 2026.

Most accurate provider

Expedia
1 star

Most trusted provider

Expedia
3 stars

Round-trip from

$296
(Kiwi.com)

One-way from

$121
(Kiwi.com)

Popular in

November

Cheapest in

August

Average price

$388
Provider with most accurate pricing for New Windsor Stewart-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for New Windsor Stewart-Lambert-St Louis flights.
Search Deals
From New Windsor Stewart to Lambert-St Louis
Search Deals
One-way flight from New Windsor Stewart to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($28 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

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 April 25, 2026.
Use the filters below to find and compare flights from New Windsor to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

New WindsorSt. Louis

SWF - STL

SWFSTL

New Windsor Stewart

Thu 6/18

9:38 am-12:09 am

1 stop15h 31m

Lambert-St Louis

Sun 6/21

4:17 pm-8:49 am

1 stop15h 32m

$296

New WindsorSt. Louis

SWF - STL

SWFSTL

New Windsor Stewart

Fri 6/19

9:39 am-12:09 am

1 stop15h 30m

Lambert-St Louis

Sun 6/21

4:17 pm-8:49 am

1 stop15h 32m

$327

New WindsorSt. Louis

SWF - STL

SWFSTL

New Windsor Stewart

Fri 5/22

9:41 am-11:57 pm

1 stop15h 16m

Lambert-St Louis

Tue 5/26

6:33 pm-11:25 am

2 stops15h 52m

$339

New WindsorSt. Louis

SWF - STL

SWFSTL

New Windsor Stewart

Mon 6/1

9:41 am-11:57 pm

1 stop15h 16m

Lambert-St Louis

Thu 6/4

3:30 pm-8:49 am

2 stops16h 19m

$371

New WindsorSt. Louis

SWF - STL

SWFSTL

New Windsor Stewart

Sat 5/23

12:05 pm-11:57 pm

2 stops12h 52m

Lambert-St Louis

Sat 5/30

4:19 pm-8:58 am

1 stop15h 39m

$391

New WindsorSt. Louis

SWF - STL

SWFSTL

New Windsor Stewart

Fri 6/5

9:39 am-11:57 pm

1 stop15h 18m

Lambert-St Louis

Sun 6/7

4:19 pm-8:49 am

1 stop15h 30m

$418
Quickest round-trip

New WindsorSt. Louis

SWF - STL

SWFSTL

New Windsor Stewart

Sat 5/23

12:05 pm-11:57 pm

2 stops12h 52m

Lambert-St Louis

Sun 6/14

4:17 pm-8:49 am

1 stop15h 32m

$433

New WindsorSt. Louis

SWF - STL

SWFSTL

New Windsor Stewart

Wed 7/29

7:46 pm-11:59 pm

1 stop29h 13m

Lambert-St Louis

Mon 8/3

8:08 pm-11:08 am

2 stops14h 00m

$444

New WindsorSt. Louis

SWF - STL

SWFSTL

New Windsor Stewart

Thu 5/21

8:10 pm-8:55 am

2 stops37h 45m

Lambert-St Louis

Thu 6/4

4:19 pm-8:49 am

1 stop15h 30m

$447
Cheapest one-way

New WindsorSt. Louis

SWF - STL

SWFSTL

New Windsor Stewart

Sat 6/6

12:05 pm-8:55 am

2 stops45h 50m

$131

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/25

Showing 1-10 of 19 resultsSorted by cheapest first
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% 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.

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.

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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