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St. Louis

$157+ Cheap flights from Westchester County 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 11/19. Fares are subject to change and may not be available on all flights or dates of travel.
HPN — STL
Nov 1 — Nov 81
Sat 11/1
Sat 11/8
1 adult, Economy
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Cheap flight deals from Westchester County to St. Louis

Keep the following information in mind while searching for Westchester County to St. Louis flight deals. Data was last updated October 2, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$287
(Delta)

One-way from

$157
(Delta)

Popular in

December

Cheapest in

January

Average price

$354
Provider with most accurate pricing for New York (NYC)-Lambert-St Louis flight deals.
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Provider most trusted by Cheapflights users for New York (NYC)-Lambert-St Louis flights.
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From Westchester County to Lambert-St Louis
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One-way flight from Westchester County 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. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Westchester County to St. Louis

Cheapest flights from Westchester County to St. Louis
Explore the most affordable flight options available from Westchester County to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 2, 2025.

This Delta deal was found by Cheapflights users on 10/2. 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.
Sat 11/15:20 pmHPN - STL
1 stop5h 44mDelta
Sun 11/25:00 amSTL - HPN
1 stop5h 00mDelta
Deal found 10/2$287
This American Airlines deal was found by Cheapflights users on 10/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/197:11 amHPN - STL
1 stop6h 54mAmerican Airlines
Wed 11/195:40 pmSTL - HPN
1 stop4h 49mAmerican Airlines
Deal found 10/1$313
This Delta deal was found by Cheapflights users on 10/2. 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.
Sat 10/45:20 pmHPN - STL
1 stop5h 30mDelta
Wed 10/86:00 amSTL - HPN
1 stop5h 00mDelta
Deal found 10/2$315
This American Airlines deal was found by Cheapflights users on 9/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/165:59 pmHPN - STL
1 stop6h 57mAmerican Airlines
Tue 11/185:40 pmSTL - HPN
1 stop4h 49mAmerican Airlines
Deal found 9/30$325
This American Airlines deal was found by Cheapflights users on 10/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/244:30 pmHPN - STL
1 stop4h 56mAmerican Airlines
Sat 10/256:00 amSTL - HPN
1 stop4h 29mAmerican Airlines
Deal found 10/1$346
This Delta deal was found by Cheapflights users on 10/2. 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.
Fri 10/34:29 pmHPN - STL
1 stop5h 46mDelta
Tue 10/78:53 amSTL - HPN
1 stop6h 45mDelta
Deal found 10/2$353
This American Airlines deal was found by Cheapflights users on 10/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/233:21 pmHPN - STL
1 stop7h 08mAmerican Airlines
Fri 10/246:08 pmSTL - HPN
1 stop4h 21mAmerican Airlines
Deal found 10/1$362
This Delta deal was found by Cheapflights users on 10/1. 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.
Wed 10/14:29 pmHPN - STL
1 stop6h 31mDelta
Sat 10/46:40 amSTL - HPN
1 stop4h 19mDelta
Deal found 10/1$373
This American Airlines deal was found by Cheapflights users on 10/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/41:41 pmHPN - STL
1 stop6h 00mAmerican Airlines
Wed 10/88:42 amSTL - HPN
1 stop6h 17mAmerican Airlines
Deal found 10/2$385
This American Airlines deal was found by Cheapflights users on 9/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/15:29 pmHPN - STL
1 stop4h 41mAmerican Airlines
Wed 10/88:42 amSTL - HPN
1 stop6h 17mAmerican Airlines
Deal found 9/30$386
This Delta deal was found by Cheapflights users on 10/2. 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 10/24:29 pmHPN - STL
1 stop5h 46mDelta
Sun 10/56:01 amSTL - HPN
1 stop4h 59mDelta
Deal found 10/2$391

Cheapflights Fare Finder

 
Customize your flight search to find flights from Westchester County 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 October 2, 2025.
Use the filters below to find and compare flights from Westchester County to St. Louis that are best for you.

Fly from

Westchester County

Fly to

St. Louis

Route

Depart

Return

Price

White PlainsSt. Louis

HPN - STL

HPNSTL

White Plains Westchester County

Sat 11/1

5:20 pm-10:04 pm

1 stop5h 44m

Lambert-St Louis

Sun 11/2

5:00 am-11:00 am

1 stop5h 00m

$287

White PlainsSt. Louis

HPN - STL

HPNSTL

White Plains Westchester County

Wed 11/19

7:11 am-1:05 pm

1 stop6h 54m

Lambert-St Louis

Wed 11/19

5:40 pm-11:29 pm

1 stop4h 49m

$313

White PlainsSt. Louis

HPN - STL

HPNSTL

White Plains Westchester County

Fri 1/30

5:10 pm-8:39 pm

1 stop4h 29m

Lambert-St Louis

Mon 2/2

6:45 am-11:50 am

1 stop4h 05m

$313

White PlainsSt. Louis

HPN - STL

HPNSTL

White Plains Westchester County

Fri 10/24

4:30 pm-8:26 pm

1 stop4h 56m

Lambert-St Louis

Sat 10/25

6:00 am-11:29 am

1 stop4h 29m

$346

White PlainsSt. Louis

HPN - STL

HPNSTL

White Plains Westchester County

Thu 10/23

3:21 pm-9:29 pm

1 stop7h 08m

Lambert-St Louis

Fri 10/24

6:08 pm-11:29 pm

1 stop4h 21m

$362

White PlainsSt. Louis

HPN - STL

HPNSTL

White Plains Westchester County

Sun 11/16

6:41 pm-11:44 pm

1 stop6h 03m

Lambert-St Louis

Tue 11/18

1:55 pm-10:09 pm

1 stop7h 14m

$471

White PlainsSt. Louis

HPN - STL

HPNSTL

White Plains Westchester County

Sun 10/19

6:00 am-10:26 am

1 stop5h 26m

Lambert-St Louis

Tue 10/21

10:45 am-3:49 pm

1 stop4h 04m

$659

White PlainsSt. Louis

HPN - STL

HPNSTL

White Plains Westchester County

Wed 11/26

5:21 pm-9:47 pm

1 stop5h 26m

Lambert-St Louis

Sun 11/30

4:46 pm-11:29 pm

1 stop5h 43m

$777

White PlainsSt. Louis

HPN - STL

HPNSTL

White Plains Westchester County

Wed 11/19

5:14 pm-8:46 pm

1 stop4h 32m

$157

White PlainsSt. Louis

HPN - STL

HPNSTL

White Plains Westchester County

Tue 3/31

6:00 am-10:50 am

1 stop5h 50m

$169

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/1

Showing 1-10 of 19 results
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Best time to book a flight from Westchester County to St. Louis

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

What is the cheapest month to book a flight from Westchester County to St. Louis?

Currently, August is the cheapest month in which you can book a flight from Westchester County to St. Louis (average of $311). Flying from Westchester County 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.

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 October 2, 2025.
Get a feel of what it's like to fly with Delta and American Airlines from Westchester County to St. Louis by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,962 reviews

Food

7.3

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Crew

8.5

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
8.0
Very good
7,962 reviews
Delta
8.0
Very good
7,962 reviews

Food

7.3

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Crew

8.5

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
7.2
Good
11,033 reviews
Delta
8.0
Very good
7,962 reviews

Food

7.3

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Crew

8.5

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 Westchester County 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 Westchester County?

    Lambert-St Louis (STL), located 12.7 mi from the city center, is the airport you fly into when you book flights from Westchester County to St. Louis.

  • How long is the flight from Westchester County to St. Louis?

    For as low as $287, Delta can have you in St. Louis from Westchester County in 5h 44m. The distance from Westchester County to St. Louis is about 895 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Westchester County 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 Westchester County to St. Louis?

    Currently, August is the cheapest month in which you can book a flight from Westchester County to St. Louis (average of $311). Flying from Westchester County 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

Traveling to a place near St. Louis?

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

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Alternative routes for Westchester County to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Westchester County to St. Louis

Discover the top 2 airlines that operate flights from Westchester County 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 October 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$242Average$368FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$278Average$415FlexibilityNo cancel feeOn-time71%

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