$178+ 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 4/21. Fares are subject to change and may not be available on all flights or dates of travel.
HPN — STL
May 1 — May 81
Round-trip
1 adult, Economy
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Find cheap flights from Westchester County to St. Louis with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Westchester County to St. Louis
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Cheapest flights from Westchester County to St. LouisExplore 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 April 1, 2026.
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 April 1, 2026.
This Delta deal was found by Cheapflights users on 3/29. 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 4/286:00 am
HPN
- STL
1 stop6h 56m
Delta
Sat 5/26:00 am
STL
- HPN
1 stop5h 00m
Delta
Deal found 3/29![Delta logo]()
$301
This American Airlines deal was found by Cheapflights users on 3/29. 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 4/2911:00 am
HPN
- STL
1 stop5h 13m
American Airlines
Sun 5/35:51 am
STL
- HPN
1 stop4h 38m
American Airlines
Deal found 3/29![American Airlines logo]()
$316
This American Airlines deal was found by Cheapflights users on 3/28. 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 9/65:29 pm
HPN
- STL
1 stop4h 33m
American Airlines
Thu 10/16:06 am
STL
- HPN
1 stop4h 03m
American Airlines
Deal found 3/28![American Airlines logo]()
$331
This Delta deal was found by Cheapflights users on 3/29. 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 4/284:29 pm
HPN
- STL
1 stop5h 50m
Delta
Sun 5/36:00 am
STL
- HPN
1 stop5h 00m
Delta
Deal found 3/29![Delta logo]()
$345
This Delta deal was found by Cheapflights users on 3/31. 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 9/66:40 pm
HPN
- STL
1 stop5h 57m
Delta
Thu 10/13:42 pm
STL
- HPN
1 stop5h 00m
Delta
Deal found 3/31![Delta logo]()
$360
This Delta deal was found by Cheapflights users on 3/31. 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 5/224:29 pm
HPN
- STL
1 stop6h 00m
Delta
Mon 5/256:45 am
STL
- HPN
1 stop4h 06m
Delta
Deal found 3/31![Delta logo]()
$374
This Delta deal was found by Cheapflights users on 3/29. 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 5/14:29 pm
HPN
- STL
1 stop5h 50m
Delta
Sun 5/36:00 am
STL
- HPN
1 stop5h 00m
Delta
Deal found 3/29![Delta logo]()
$389
This American Airlines deal was found by Cheapflights users on 3/30. 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.
Fri 6/265:29 pm
HPN
- STL
1 stop5h 01m
American Airlines
Tue 6/306:00 am
STL
- HPN
1 stop4h 29m
American Airlines
Deal found 3/30![American Airlines logo]()
$394
This American Airlines deal was found by Cheapflights users on 3/29. 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 4/285:16 pm
HPN
- STL
1 stop5h 51m
American Airlines
Mon 5/45:51 am
STL
- HPN
1 stop4h 38m
American Airlines
Deal found 3/29![American Airlines logo]()
$396
This Delta deal was found by Cheapflights users on 3/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/266:00 am
HPN
- STL
1 stop6h 56m
Delta
Thu 4/306:00 am
STL
- HPN
1 stop5h 00m
Delta
Deal found 3/30![Delta logo]()
$400
This Delta deal was found by Cheapflights users on 3/27. 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 4/174:29 pm
HPN
- STL
1 stop5h 50m
Delta
Mon 4/209:59 am
STL
- HPN
1 stop7h 17m
Delta
Deal found 3/27![Delta logo]()
$403
This American Airlines deal was found by Cheapflights users on 3/31. 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 4/14:30 pm
HPN
- STL
1 stop5h 41m
American Airlines
Wed 4/89:10 am
STL
- HPN
1 stop6h 36m
American Airlines
Deal found 3/31![American Airlines logo]()
$407
Best flights from Westchester County to St. LouisDiscover carefully curated flight deals from Westchester County to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 1, 2026.
Discover carefully curated flight deals from Westchester County to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 1, 2026.
This American Airlines deal was found by Cheapflights users on 3/28. 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 9/65:29 pm
HPN
- STL
1 stop4h 33m
American Airlines
Thu 10/16:06 am
STL
- HPN
1 stop4h 03m
American Airlines
Deal found 3/28![American Airlines logo]()
$331
This Delta deal was found by Cheapflights users on 3/29. 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 4/296:57 pm
HPN
- STL
1 stop5h 39m
Delta
Sun 5/36:00 am
STL
- HPN
1 stop5h 00m
Delta
Deal found 3/29![Delta logo]()
$345
This Delta deal was found by Cheapflights users on 3/29. 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 4/306:57 pm
HPN
- STL
1 stop5h 39m
Delta
Sat 5/27:25 am
STL
- HPN
1 stop6h 04m
Delta
Deal found 3/29![Delta logo]()
$345
This Delta deal was found by Cheapflights users on 3/31. 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 9/66:40 pm
HPN
- STL
1 stop5h 57m
Delta
Thu 10/13:42 pm
STL
- HPN
1 stop5h 00m
Delta
Deal found 3/31![Delta logo]()
$360
This Delta deal was found by Cheapflights users on 3/31. 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 5/156:40 pm
HPN
- STL
1 stop6h 19m
Delta
Mon 5/186:45 am
STL
- HPN
1 stop4h 05m
Delta
Deal found 3/31![Delta logo]()
$389
This Delta deal was found by Cheapflights users on 3/31. 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 7/35:10 pm
HPN
- STL
1 stop4h 29m
Delta
Wed 7/86:00 am
STL
- HPN
1 stop5h 08m
Delta
Deal found 3/31![Delta logo]()
$400
This Delta deal was found by Cheapflights users on 3/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/266:00 am
HPN
- STL
1 stop6h 56m
Delta
Thu 4/306:00 am
STL
- HPN
1 stop5h 00m
Delta
Deal found 3/30![Delta logo]()
$400
This Delta deal was found by Cheapflights users on 3/27. 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 4/174:29 pm
HPN
- STL
1 stop5h 50m
Delta
Mon 4/209:59 am
STL
- HPN
1 stop7h 17m
Delta
Deal found 3/27![Delta logo]()
$403
This Delta deal was found by Cheapflights users on 3/29. 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 5/14:29 pm
HPN
- STL
1 stop5h 50m
Delta
Mon 5/46:00 am
STL
- HPN
1 stop5h 00m
Delta
Deal found 3/29![Delta logo]()
$444
This Delta deal was found by Cheapflights users on 3/27. 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 4/206:57 pm
HPN
- STL
1 stop5h 39m
Delta
Thu 4/2310:50 am
STL
- HPN
1 stop3h 59m
Delta
Deal found 3/27![Delta logo]()
$456
This Delta deal was found by Cheapflights users on 3/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/146:00 am
HPN
- STL
1 stop6h 56m
Delta
Wed 4/156:00 am
STL
- HPN
1 stop7h 29m
Delta
Deal found 3/30![Delta logo]()
$477
This Delta deal was found by Cheapflights users on 3/27. 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 7/126:29 am
HPN
- STL
1 stop6h 48m
Delta
Mon 7/133:40 pm
STL
- HPN
1 stop5h 45m
Delta
Deal found 3/27![Delta logo]()
$478
Last-minute flights from Westchester County to St. LouisDiscover last-minute flight deals from Westchester County to St. Louis. Data last updated April 1, 2026 and is based on user searches.
Discover last-minute flight deals from Westchester County to St. Louis. Data last updated April 1, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 3/31. 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 4/14:30 pm
HPN
- STL
1 stop5h 41m
American Airlines
Wed 4/89:10 am
STL
- HPN
1 stop6h 36m
American Airlines
Deal found 3/31![American Airlines logo]()
$407
This American Airlines deal was found by Cheapflights users on 3/31. 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 4/41:37 pm
HPN
- STL
1 stop6h 53m
American Airlines
Mon 4/610:33 am
STL
- HPN
1 stop5h 14m
American Airlines
Deal found 3/31![American Airlines logo]()
$429
This Delta deal was found by Cheapflights users on 3/27. 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 4/174:29 pm
HPN
- STL
1 stop5h 50m
Delta
Mon 4/209:59 am
STL
- HPN
1 stop7h 17m
Delta
Deal found 3/27![Delta logo]()
$403
This American Airlines deal was found by Cheapflights users on 3/31. 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 4/177:00 am
HPN
- STL
1 stop8h 03m
American Airlines
Mon 4/205:51 am
STL
- HPN
1 stop4h 38m
American Airlines
Deal found 3/31![American Airlines logo]()
$451
This Delta deal was found by Cheapflights users on 3/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/266:00 am
HPN
- STL
1 stop6h 56m
Delta
Thu 4/306:00 am
STL
- HPN
1 stop5h 00m
Delta
Deal found 3/30![Delta logo]()
$400
This Delta deal was found by Cheapflights users on 3/29. 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 4/286:00 am
HPN
- STL
1 stop6h 56m
Delta
Sat 5/26:00 am
STL
- HPN
1 stop5h 00m
Delta
Deal found 3/29![Delta logo]()
$301
This Delta deal was found by Cheapflights users on 3/29. 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 4/284:29 pm
HPN
- STL
1 stop5h 50m
Delta
Sun 5/36:00 am
STL
- HPN
1 stop5h 00m
Delta
Deal found 3/29![Delta logo]()
$345
This American Airlines deal was found by Cheapflights users on 3/29. 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 4/285:16 pm
HPN
- STL
1 stop5h 51m
American Airlines
Mon 5/45:51 am
STL
- HPN
1 stop4h 38m
American Airlines
Deal found 3/29![American Airlines logo]()
$396
This American Airlines deal was found by Cheapflights users on 3/29. 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 4/2911:00 am
HPN
- STL
1 stop5h 13m
American Airlines
Sun 5/35:51 am
STL
- HPN
1 stop4h 38m
American Airlines
Deal found 3/29![American Airlines logo]()
$316
This American Airlines deal was found by Cheapflights users on 3/29. 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 4/3011:00 am
HPN
- STL
1 stop5h 13m
American Airlines
Sun 5/35:51 am
STL
- HPN
1 stop4h 38m
American Airlines
Deal found 3/29![American Airlines logo]()
$331
This American Airlines deal was found by Cheapflights users on 3/29. 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 4/305:16 pm
HPN
- STL
1 stop5h 51m
American Airlines
Mon 5/45:51 am
STL
- HPN
1 stop4h 38m
American Airlines
Deal found 3/29![American Airlines logo]()
$411
One-way flights from Westchester County to St. LouisSearch for one-way flight options from Westchester County to St. Louis. Find affordable one-way fares based on user searches. Data last updated April 1, 2026.
Search for one-way flight options from Westchester County to St. Louis. Find affordable one-way fares based on user searches. Data last updated April 1, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2112:08 pm
HPN
- STL
2 stops12h 11m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$178
This American Airlines deal was found by Cheapflights users on 3/27. 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 5/177:00 am
HPN
- STL
1 stop5h 47m
American Airlines
Deal found 3/27![American Airlines logo]()
$195
This Delta deal was found by Cheapflights users on 3/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/204:29 pm
HPN
- STL
1 stop8h 07m
Delta
Deal found 3/30![Delta logo]()
$198
This American Airlines deal was found by Cheapflights users on 3/29. 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 4/127:00 am
HPN
- STL
1 stop5h 47m
American Airlines
Deal found 3/29![American Airlines logo]()
$239
This Kiwi.com deal was found by Cheapflights users on 3/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/208:00 am
HPN
- STL
2 stops16h 19m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$248
This Delta deal was found by Cheapflights users on 3/28. 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 4/75:17 pm
HPN
- STL
1 stop4h 25m
Delta
Deal found 3/28![Delta logo]()
$270
This Delta deal was found by Cheapflights users on 3/28. 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 4/912:35 pm
HPN
- STL
1 stop4h 57m
Delta
Deal found 3/28![Delta logo]()
$289
This American Airlines deal was found by Cheapflights users on 3/28. 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.
Mon 4/65:29 pm
HPN
- STL
1 stop7h 36m
American Airlines
Deal found 3/28![American Airlines logo]()
$329
This Kiwi.com deal was found by Cheapflights users on 3/29. 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.
Sun 4/121:20 pm
HPN
- STL
3 stops58h 59m
Multiple Airlines
Deal found 3/29![Multiple Airlines logo]()
$332
This Kiwi.com deal was found by Cheapflights users on 3/28. 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 4/1012:08 pm
HPN
- STL
2 stops36h 17m
Multiple Airlines
Deal found 3/28![Multiple Airlines logo]()
$343
Find 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 April 1, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $301 (Delta) |
One-way from | $178 (Kiwi.com) |
Popular in | November |
Cheapest in | August |
Average price | $317 |
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 April 1, 2026.
Use the filters below to find and compare flights from Westchester County to St. Louis that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
White PlainsSt. Louis
HPN - STL
HPNSTL
White Plains Westchester County
Sun 9/6
5:29 pm-9:02 pm
1 stop4h 33m
Lambert-St Louis
Thu 10/1
6:06 am-11:09 am
1 stop4h 03m
$331
White PlainsSt. Louis
HPN - STL
HPNSTL
White Plains Westchester County
Wed 4/29
6:57 pm-11:36 pm
1 stop5h 39m
Lambert-St Louis
Sun 5/3
6:00 am-12:00 pm
1 stop5h 00m
$345
White PlainsSt. Louis
HPN - STL
HPNSTL
White Plains Westchester County
Thu 4/30
6:57 pm-11:36 pm
1 stop5h 39m
Lambert-St Louis
Sat 5/2
7:25 am-2:29 pm
1 stop6h 04m
$345
White PlainsSt. Louis
HPN - STL
HPNSTL
White Plains Westchester County
Sun 9/6
6:40 pm-11:37 pm
1 stop5h 57m
Lambert-St Louis
Thu 10/1
3:42 pm-9:42 pm
1 stop5h 00m
$360
White PlainsSt. Louis
HPN - STL
HPNSTL
White Plains Westchester County
Fri 5/15
6:40 pm-11:59 pm
1 stop6h 19m
Lambert-St Louis
Mon 5/18
6:45 am-11:50 am
1 stop4h 05m
$389
White PlainsSt. Louis
HPN - STL
HPNSTL
White Plains Westchester County
Fri 7/3
5:10 pm-8:39 pm
1 stop4h 29m
Lambert-St Louis
Wed 7/8
6:00 am-12:08 pm
1 stop5h 08m
$400
White PlainsSt. Louis
HPN - STL
HPNSTL
White Plains Westchester County
Sun 4/26
6:00 am-11:56 am
1 stop6h 56m
Lambert-St Louis
Thu 4/30
6:00 am-12:00 pm
1 stop5h 00m
$400
White PlainsSt. Louis
HPN - STL
HPNSTL
White Plains Westchester County
Fri 4/17
4:29 pm-9:19 pm
1 stop5h 50m
Lambert-St Louis
Mon 4/20
9:59 am-6:16 pm
1 stop7h 17m
$403
White PlainsSt. Louis
HPN - STL
HPNSTL
White Plains Westchester County
Fri 5/1
4:29 pm-9:19 pm
1 stop5h 50m
Lambert-St Louis
Mon 5/4
6:00 am-12:00 pm
1 stop5h 00m
$444
White PlainsSt. Louis
HPN - STL
HPNSTL
White Plains Westchester County
Mon 4/20
6:57 pm-11:36 pm
1 stop5h 39m
Lambert-St Louis
Thu 4/23
10:50 am-3:49 pm
1 stop3h 59m
$456
Showing 1-10 of 23 resultsSorted by cheapest first
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.
HPN-STL
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
zzREU-STL
HPN-STL
No data available for this route at this time. Please check back soon.
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 April 1, 2026.
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.
Crew
8.5
Entertainment
7.8
Boarding
8.1
Overall
7.9
Comfort
7.9
Food
7.2
Reviews
1 / 20
10.0
ExcellentKymberlee,Oct 2024
JFK - ATL
Crew
8.5
Entertainment
7.8
Boarding
8.1
Overall
7.9
Comfort
7.9
Food
7.2
Reviews
1 / 20
10.0
ExcellentKymberlee,Oct 2024
JFK - ATL
Crew
8.5
Entertainment
7.8
Boarding
8.1
Overall
7.9
Comfort
7.9
Food
7.2
Reviews
1 / 20
10.0
ExcellentKymberlee,Oct 2024
JFK - ATL
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.
Traveling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsEdwardsville
O'Fallon
Fenton
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Wentzville
Glencoe
Chesterfield
Alton
Farmington
Festus
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St. Louis flight routes
Alternative routes for Westchester County to St. Louis
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Complete your trip
Complete your trip to St. Louis by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Westchester County to St. Louis by cabin class
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Westchester County and St. Louis flights
Browse other Westchester County and St. Louis flight options. Last updated on April 1, 2026.
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Other flights to St. Louis
Explore flights to St. Louis departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on April 1, 2026.
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 April 1, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$260 | Average$332 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$280 | Average$415 | FlexibilityNo cancel fee | On-time71% |