In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

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

Find a great deal and save up to 64% by booking at least 57 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from New Windsor to St. Louis within the next two weeks, with the cheapest ticket starting at $333.

What is the cheapest month to fly from New Windsor to St. Louis?

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, January can be a great choice for travel to St. Louis. Flights to St. Louis from New Windsor in January are about $334 on average during January, but can be found for as low as $207.

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

When flying from New Windsor to St. Louis, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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.

$108+ Flights from New Windsor to St. Louis

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Cheap flight deals from Stewart to St. Louis

Round-trip from	$264 (Kiwi.com)
One-way from	$108 (Kiwi.com)
Popular in	December
Cheapest in	January
Average price	$313

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. 9% potential increase in price ($34 potential increase over avg. RT price).

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Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).

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Average for round-trip flights in September 2025

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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 September 11, 2025.

Fri 12/1212:27 pmSWF - STL

1 stop26h 26mMultiple Airlines

Sat 12/205:48 pmSTL - SWF

2 stops22h 50mMultiple Airlines

Deal found 9/9

$525

Mon 12/227:10 pmSWF - STL

1 stop28h 36mMultiple Airlines

Tue 12/303:40 pmSTL - SWF

1 stop24h 04mMultiple Airlines

Deal found 9/10

$671

Mon 12/227:10 pmSWF - STL

1 stop28h 36mMultiple Airlines

Sun 12/283:40 pmSTL - SWF

1 stop19h 22mMultiple Airlines

Deal found 9/10

$687

Sat 12/209:45 amSWF - STL

1 stop14h 01mMultiple Airlines

Mon 12/225:45 pmSTL - SWF

1 stop16h 18mMultiple Airlines

Deal found 9/10

$796

Sun 12/2111:43 amSWF - STL

1 stop12h 03mMultiple Airlines

Mon 12/295:45 pmSTL - SWF

1 stop16h 18mMultiple Airlines

Deal found 9/9

$821

Best flights from Stewart to St. Louis
Discover carefully curated flight deals from Stewart to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2025.

Fri 1/2311:09 amSWF - STL

1 stop27h 44mMultiple Airlines

Sun 2/112:20 pmSTL - SWF

1 stop20h 59mMultiple Airlines

Deal found 9/11

$264

Fri 12/1212:27 pmSWF - STL

1 stop26h 26mMultiple Airlines

Sat 12/205:48 pmSTL - SWF

2 stops22h 50mMultiple Airlines

Deal found 9/9

$525

Mon 12/227:10 pmSWF - STL

1 stop28h 36mMultiple Airlines

Tue 12/303:40 pmSTL - SWF

1 stop24h 04mMultiple Airlines

Deal found 9/10

$671

Mon 12/227:10 pmSWF - STL

1 stop28h 36mMultiple Airlines

Sun 12/283:40 pmSTL - SWF

1 stop19h 22mMultiple Airlines

Deal found 9/9

$687

Sat 12/209:45 amSWF - STL

1 stop14h 01mMultiple Airlines

Mon 12/225:45 pmSTL - SWF

1 stop16h 18mMultiple Airlines

Deal found 9/10

$796

Sun 12/2111:43 amSWF - STL

1 stop12h 03mMultiple Airlines

Mon 12/295:45 pmSTL - SWF

1 stop16h 18mMultiple Airlines

Deal found 9/9

$821

One-way flights from Stewart to St. Louis
Search for one-way flight options from Stewart to St. Louis. Find affordable one-way fares based on user searches. Data last updated September 11, 2025.

Fri 12/512:27 pmSWF - STL

1 stop26h 26mMultiple Airlines

Deal found 9/10

$108

Fri 12/1212:27 pmSWF - STL

1 stop26h 26mMultiple Airlines

Deal found 9/10

$110

Mon 12/87:30 pmSWF - STL

2 stops39h 32mMultiple Airlines

Deal found 9/10

$145

Mon 12/157:30 pmSWF - STL

1 stop28h 16mMultiple Airlines

Deal found 9/10

$162

Thu 12/411:09 amSWF - STL

2 stops31h 22mMultiple Airlines

Deal found 9/10

$172

Thu 12/1111:09 amSWF - STL

3 stops31h 22mMultiple Airlines

Deal found 9/10

$185

Cheapflights Fare Finder

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

New WindsorSt. Louis

SWF - STL

SWFSTL

New Windsor Stewart

Fri 1/23

11:09 am-1:53 pm

1 stop27h 44m

Lambert-St Louis

Sun 2/1

12:20 pm-10:19 am

1 stop20h 59m

$264

New WindsorSt. Louis

SWF - STL

SWFSTL

New Windsor Stewart

Fri 12/12

12:27 pm-1:53 pm

1 stop26h 26m

Lambert-St Louis

Sat 12/20

5:48 pm-5:38 pm

2 stops22h 50m

$525

New WindsorSt. Louis

SWF - STL

SWFSTL

New Windsor Stewart

Mon 12/22

7:10 pm-10:46 pm

1 stop28h 36m

Lambert-St Louis

Tue 12/30

3:40 pm-4:44 pm

1 stop24h 04m

$671

New WindsorSt. Louis

SWF - STL

SWFSTL

New Windsor Stewart

Mon 12/22

7:10 pm-10:46 pm

1 stop28h 36m

Lambert-St Louis

Sun 12/28

3:40 pm-12:02 pm

1 stop19h 22m

$687

New WindsorSt. Louis

SWF - STL

SWFSTL

New Windsor Stewart

Sat 12/20

9:45 am-10:46 pm

1 stop14h 01m

Lambert-St Louis

Mon 12/22

5:45 pm-11:03 am

1 stop16h 18m

$796

New WindsorSt. Louis

SWF - STL

SWFSTL

New Windsor Stewart

Sun 12/21

11:43 am-10:46 pm

1 stop12h 03m

Lambert-St Louis

Mon 12/29

5:45 pm-11:03 am

1 stop16h 18m

$821

New WindsorSt. Louis

SWF - STL

SWFSTL

New Windsor Stewart

Fri 12/5

12:27 pm-1:53 pm

1 stop26h 26m

$108

New WindsorSt. Louis

SWF - STL

SWFSTL

New Windsor Stewart

Mon 12/8

7:30 pm-10:02 am

2 stops39h 32m

$145

New WindsorSt. Louis

SWF - STL

SWFSTL

New Windsor Stewart

Thu 12/4

11:09 am-5:31 pm

2 stops31h 22m

$172

New WindsorSt. Louis

SWF - STL

SWFSTL

New Windsor Stewart

Sun 9/28

11:43 am-1:02 pm

1 stop26h 19m

$193

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 12 results

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, August is the cheapest month in which you can book a flight from New Windsor to St. Louis (average of $311). Flying from New Windsor to St. Louis in March is currently the most expensive (average of $356). 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

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, August is the cheapest month in which you can book a flight from New Windsor to St. Louis (average of $311). Flying from New Windsor to St. Louis in March is currently the most expensive (average of $356). 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

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$108+ 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 12/5. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Stewart to St. Louis with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Stewart to St. Louis

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Stewart to St. Louis

Cheapest flights from Stewart to St. LouisExplore 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 September 11, 2025.

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 September 11, 2025.

Cheapflights Fare Finder

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

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.

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?

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?

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

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

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

Traveling to a place near St. Louis?

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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 September 11, 2025.