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St. Louis

$169+ 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 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
HPN — STL
Aug 23 — Aug 301
Sat 8/23
Sat 8/30
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 August 18, 2025.

Round-trip from

$261
(American Airlines)

One-way from

$169
(Delta)

Popular in

December

Cheapest in

January

Average price

$336
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. 8% potential increase in price ($30 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 August 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 August 18, 2025.

This Delta deal was found by Cheapflights users on 8/16. 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.
Tue 9/165:20 pmHPN - STL
1 stop4h 14mDelta
Wed 9/246:40 amSTL - HPN
1 stop4h 19mDelta
Deal found 8/16$261
This Delta deal was found by Cheapflights users on 8/16. 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.
Mon 9/156:40 pmHPN - STL
1 stop5h 44mDelta
Wed 9/246:01 amSTL - HPN
1 stop7h 28mDelta
Deal found 8/16$287
This Delta deal was found by Cheapflights users on 8/16. 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.
Sun 9/146:00 amHPN - STL
1 stop4h 59mDelta
Wed 9/246:40 amSTL - HPN
1 stop4h 19mDelta
Deal found 8/16$309
This Delta deal was found by Cheapflights users on 8/17. 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 9/266:40 pmHPN - STL
1 stop5h 44mDelta
Mon 9/296:01 amSTL - HPN
1 stop7h 28mDelta
Deal found 8/17$313
This Delta deal was found by Cheapflights users on 8/18. 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.
Tue 9/24:29 pmHPN - STL
1 stop6h 33mDelta
Wed 9/106:00 amSTL - HPN
1 stop7h 29mDelta
Deal found 8/18$315
This American Airlines deal was found by Cheapflights users on 8/17. 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.
Tue 9/235:29 pmHPN - STL
1 stop4h 41mAmerican Airlines
Fri 9/262:11 pmSTL - HPN
1 stop4h 49mAmerican Airlines
Deal found 8/17$317
This Delta deal was found by Cheapflights users on 8/16. 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 9/2012:42 pmHPN - STL
2 stops11h 27mDelta
Wed 9/246:40 amSTL - HPN
1 stop4h 19mDelta
Deal found 8/16$335
This Delta deal was found by Cheapflights users on 8/18. 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 8/206:00 amHPN - STL
1 stop4h 57mDelta
Sun 8/246:40 amSTL - HPN
1 stop4h 17mDelta
Deal found 8/18$353
This Delta deal was found by Cheapflights users on 8/16. 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 9/196:40 pmHPN - STL
1 stop5h 44mDelta
Wed 9/246:01 amSTL - HPN
1 stop7h 28mDelta
Deal found 8/16$354
This Delta deal was found by Cheapflights users on 8/18. 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 9/256:40 pmHPN - STL
1 stop5h 44mDelta
Sun 9/286:01 amSTL - HPN
1 stop4h 59mDelta
Deal found 8/18$380

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 August 18, 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

Wed 9/17

6:00 am-9:26 am

1 stop4h 26m

Lambert-St Louis

Wed 9/24

6:10 am-11:29 am

1 stop4h 19m

$261

White PlainsSt. Louis

HPN - STL

HPNSTL

White Plains Westchester County

Tue 9/16

5:20 pm-8:34 pm

1 stop4h 14m

Lambert-St Louis

Wed 9/24

6:40 am-11:59 am

1 stop4h 19m

$261

White PlainsSt. Louis

HPN - STL

HPNSTL

White Plains Westchester County

Wed 9/17

5:20 pm-8:34 pm

1 stop4h 14m

Lambert-St Louis

Wed 9/24

6:40 am-11:59 am

1 stop4h 19m

$261

White PlainsSt. Louis

HPN - STL

HPNSTL

White Plains Westchester County

Sat 9/20

12:42 pm-4:42 pm

1 stop5h 00m

Lambert-St Louis

Wed 9/24

7:10 am-2:29 pm

1 stop6h 19m

$261

White PlainsSt. Louis

HPN - STL

HPNSTL

White Plains Westchester County

Mon 9/15

6:40 pm-11:24 pm

1 stop5h 44m

Lambert-St Louis

Wed 9/24

6:40 am-11:59 am

1 stop4h 19m

$287

White PlainsSt. Louis

HPN - STL

HPNSTL

White Plains Westchester County

Thu 10/9

6:00 am-10:26 am

1 stop5h 26m

Lambert-St Louis

Sat 10/11

3:59 pm-10:09 pm

1 stop5h 10m

$287

White PlainsSt. Louis

HPN - STL

HPNSTL

White Plains Westchester County

Thu 9/18

6:00 am-12:31 pm

1 stop7h 31m

Lambert-St Louis

Wed 9/24

7:10 am-2:29 pm

1 stop6h 19m

$287

White PlainsSt. Louis

HPN - STL

HPNSTL

White Plains Westchester County

Sun 9/14

6:00 am-9:59 am

1 stop4h 59m

Lambert-St Louis

Wed 9/24

6:01 am-12:00 pm

1 stop4h 59m

$309

White PlainsSt. Louis

HPN - STL

HPNSTL

White Plains Westchester County

Wed 9/10

6:00 am-12:31 pm

1 stop7h 31m

$169

White PlainsSt. Louis

HPN - STL

HPNSTL

White Plains Westchester County

Tue 9/9

4:29 pm-10:02 pm

1 stop6h 33m

$169

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/18

Showing 1-10 of 13 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 August 18, 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
7,981 reviews

Overall

8.0

Crew

8.5

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Food

7.3

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
7,981 reviews
Delta
8.0
Very good
7,981 reviews

Overall

8.0

Crew

8.5

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Food

7.3

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
10,000 reviews
Delta
8.0
Very good
7,981 reviews

Overall

8.0

Crew

8.5

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Food

7.3

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 $261, American Airlines can have you in St. Louis from Westchester County in 4h 14m. 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
O'Fallon
Fairview Heights
Maryland Heights
Collinsville
Eureka
St. Peters
Glencoe
Alton
Chesterfield
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 August 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$236Average$368FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$268Average$385FlexibilityNo cancel feeOn-time71%

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