$108+ Cheap flights to St. Charles
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 10/25. Fares are subject to change and may not be available on all flights or dates of travel.
— STL
Aug 31 — Sep 71
Round-trip
1 adult, Economy
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Cheapest flights to St. CharlesExplore the most affordable flight options available to St. Charles. Find the lowest fares based on data from user searches, with prices last updated on August 1, 2026.
Explore the most affordable flight options available to St. Charles. Find the lowest fares based on data from user searches, with prices last updated on August 1, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/28. 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.
Thu 10/2210:38 am
SWF
- STL
2 stops24h 02m
Multiple Airlines
Thu 10/298:34 pm
STL
- SWF
1 stop19h 15m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$256
This Southwest deal was found by Cheapflights users on 7/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2012:00 pm
LGA
- STL
Nonstop2h 40m
Southwest
Mon 8/245:40 am
STL
- LGA
Nonstop2h 20m
Southwest
Deal found 7/29![Southwest logo]()
$293
This Kiwi.com deal was found by Cheapflights users on 7/30. 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.
Thu 8/206:18 am
LGA
- STL
1 stop12h 04m
Frontier
Sun 8/236:17 pm
STL
- LGA
1 stop25h 42m
Frontier
Deal found 7/30![Frontier logo]()
$294
This American Airlines deal was found by Cheapflights users on 7/30. 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.
Thu 8/206:55 am
LGA
- STL
Nonstop2h 48m
American Airlines
Mon 8/246:00 am
STL
- LGA
Nonstop2h 29m
American Airlines
Deal found 7/30![American Airlines logo]()
$295
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/144:59 pm
LGA
- STL
1 stop16h 58m
Frontier
Sun 8/166:34 pm
STL
- LGA
1 stop25h 10m
Frontier
Deal found 7/27![Frontier logo]()
$296
This Kiwi.com deal was found by Cheapflights users on 7/30. 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.
Thu 8/201:00 pm
JFK
- STL
2 stops27h 28m
Frontier
Mon 8/246:17 pm
STL
- JFK
1 stop16h 37m
Frontier
Deal found 7/30![Frontier logo]()
$296
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/276:18 am
LGA
- STL
1 stop12h 04m
Frontier
Sun 8/306:17 pm
STL
- LGA
1 stop20h 43m
Frontier
Deal found 7/27![Frontier logo]()
$297
This Kiwi.com deal was found by Cheapflights users on 7/30. 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.
Thu 9/2410:56 am
SWF
- STL
1 stop30h 38m
Multiple Airlines
Mon 10/52:29 pm
STL
- SWF
2 stops44h 10m
Multiple Airlines
Deal found 7/30![Multiple Airlines logo]()
$297
This Delta deal was found by Cheapflights users on 7/29. 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 9/310:00 am
LGA
- STL
Nonstop2h 47m
Delta
Sun 9/612:30 pm
STL
- LGA
Nonstop2h 39m
Delta
Deal found 7/29![Delta logo]()
$298
This Kiwi.com deal was found by Cheapflights users on 7/28. 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.
Thu 8/206:18 am
LGA
- STL
1 stop12h 04m
Frontier
Mon 8/247:58 pm
STL
- LGA
2 stops24h 01m
Frontier
Deal found 7/28![Frontier logo]()
$299
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 9/412:17 pm
SWF
- STL
2 stops28h 54m
Multiple Airlines
Thu 9/106:39 pm
STL
- SWF
1 stop14h 37m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$302
This Delta deal was found by Cheapflights users on 7/28. 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 8/206:30 am
LGA
- STL
Nonstop2h 38m
Delta
Mon 8/243:39 pm
STL
- LGA
1 stop5h 48m
Delta
Deal found 7/28![Delta logo]()
$304
Best flights to St. CharlesDiscover carefully curated flight deals to St. Charles that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 1, 2026.
Discover carefully curated flight deals to St. Charles that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 1, 2026.
This Southwest deal was found by Cheapflights users on 7/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/155:45 pm
LGA
- STL
Nonstop2h 50m
Southwest
Thu 9/175:40 am
STL
- LGA
Nonstop2h 20m
Southwest
Deal found 7/29![Southwest logo]()
$293
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 9/412:17 pm
SWF
- STL
2 stops28h 54m
Multiple Airlines
Thu 9/106:39 pm
STL
- SWF
1 stop14h 37m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$302
This Delta deal was found by Cheapflights users on 7/27. 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.
Thu 8/206:00 am
JFK
- STL
1 stop4h 54m
Delta
Mon 8/245:23 pm
STL
- JFK
1 stop6h 51m
Delta
Deal found 7/27![Delta logo]()
$312
This United Airlines deal was found by Cheapflights users on 7/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/269:59 pm
EWR
- STL
Nonstop2h 39m
United Airlines
Wed 9/27:00 am
STL
- EWR
Nonstop2h 31m
United Airlines
Deal found 7/27![United Airlines logo]()
$373
This Southwest deal was found by Cheapflights users on 7/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/267:25 am
LGA
- STL
1 stop4h 55m
Southwest
Wed 9/27:55 pm
STL
- LGA
Nonstop2h 20m
Southwest
Deal found 7/27![Southwest logo]()
$303
This Kiwi.com deal was found by Cheapflights users on 7/29. 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.
Thu 9/1010:56 am
SWF
- STL
1 stop7h 58m
Multiple Airlines
Sun 9/135:19 pm
STL
- SWF
1 stop16h 12m
Multiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$304
This Delta deal was found by Cheapflights users on 7/30. 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.
Sat 10/176:00 am
JFK
- STL
1 stop5h 51m
Delta
Tue 10/205:35 pm
STL
- JFK
1 stop6h 24m
Delta
Deal found 7/30![Delta logo]()
$313
This Southwest deal was found by Cheapflights users on 7/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/56:00 am
LGA
- STL
1 stop9h 15m
Southwest
Mon 9/75:40 am
STL
- LGA
Nonstop2h 20m
Southwest
Deal found 7/29![Southwest logo]()
$303
This Delta deal was found by Cheapflights users on 7/29. 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.
Sat 9/128:35 am
JFK
- STL
1 stop4h 57m
Delta
Sat 9/193:54 pm
STL
- JFK
1 stop5h 08m
Delta
Deal found 7/29![Delta logo]()
$313
This Southwest deal was found by Cheapflights users on 7/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/18:55 am
LGA
- STL
1 stop4h 20m
Southwest
Tue 10/68:30 am
STL
- LGA
1 stop7h 20m
Southwest
Deal found 7/27![Southwest logo]()
$308
This United Airlines deal was found by Cheapflights users on 7/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/209:15 am
EWR
- STL
1 stop7h 23m
United Airlines
Sat 8/227:00 am
STL
- EWR
Nonstop2h 31m
United Airlines
Deal found 7/27![United Airlines logo]()
$383
This Delta deal was found by Cheapflights users on 7/30. 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.
Fri 10/166:25 pm
LGA
- STL
Nonstop2h 49m
Delta
Tue 10/2010:00 am
STL
- LGA
Nonstop2h 21m
Delta
Deal found 7/30![Delta logo]()
$329
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2810:56 am
SWF
- STL
1 stop30h 15m
Multiple Airlines
Mon 8/317:58 pm
STL
- SWF
2 stops14h 10m
Multiple Airlines
Deal found 7/31![Multiple Airlines logo]()
$367
This United Airlines deal was found by Cheapflights users on 7/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/264:55 pm
EWR
- STL
1 stop5h 22m
United Airlines
Sat 8/297:00 am
STL
- EWR
Nonstop2h 31m
United Airlines
Deal found 7/30![United Airlines logo]()
$383
This Delta deal was found by Cheapflights users on 7/30. 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.
Thu 9/31:50 pm
LGA
- STL
Nonstop2h 48m
Delta
Fri 9/45:25 pm
STL
- LGA
Nonstop2h 38m
Delta
Deal found 7/30![Delta logo]()
$329
This Southwest deal was found by Cheapflights users on 7/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/238:55 am
LGA
- STL
1 stop4h 20m
Southwest
Mon 10/2611:05 am
STL
- LGA
Nonstop2h 20m
Southwest
Deal found 7/27![Southwest logo]()
$335
This Kiwi.com deal was found by Cheapflights users on 7/28. 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.
Thu 9/2410:56 am
SWF
- STL
1 stop7h 58m
Multiple Airlines
Sun 9/275:19 pm
STL
- SWF
1 stop16h 12m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$385
This United Airlines deal was found by Cheapflights users on 7/31. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/59:59 pm
EWR
- STL
Nonstop2h 39m
United Airlines
Sun 9/68:40 am
STL
- EWR
1 stop4h 24m
United Airlines
Deal found 7/31![United Airlines logo]()
$386
This Delta deal was found by Cheapflights users on 7/31. 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.
Wed 9/236:20 pm
LGA
- STL
Nonstop2h 46m
Delta
Sat 9/262:00 pm
STL
- LGA
Nonstop2h 29m
Delta
Deal found 7/31![Delta logo]()
$331
This Southwest deal was found by Cheapflights users on 7/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/44:35 pm
LGA
- STL
1 stop6h 35m
Southwest
Mon 9/75:40 am
STL
- LGA
Nonstop2h 20m
Southwest
Deal found 7/29![Southwest logo]()
$339
This United Airlines deal was found by Cheapflights users on 7/31. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/29:15 am
EWR
- STL
1 stop7h 23m
United Airlines
Sat 9/54:50 pm
STL
- EWR
Nonstop2h 40m
United Airlines
Deal found 7/31![United Airlines logo]()
$402
This Delta deal was found by Cheapflights users on 7/27. 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 10/96:45 am
LGA
- STL
Nonstop2h 44m
Delta
Mon 10/125:31 pm
STL
- LGA
Nonstop2h 29m
Delta
Deal found 7/27![Delta logo]()
$346
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2710:33 am
SWF
- STL
1 stop29h 55m
Multiple Airlines
Mon 8/314:23 pm
STL
- SWF
1 stop17h 45m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$429
This Southwest deal was found by Cheapflights users on 7/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/88:30 am
LGA
- STL
1 stop7h 25m
Southwest
Sun 10/115:40 am
STL
- LGA
Nonstop2h 20m
Southwest
Deal found 7/29![Southwest logo]()
$356
This United Airlines deal was found by Cheapflights users on 7/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/42:15 pm
EWR
- STL
Nonstop2h 36m
United Airlines
Mon 9/77:00 am
STL
- EWR
Nonstop2h 31m
United Airlines
Deal found 7/29![United Airlines logo]()
$409
This Delta deal was found by Cheapflights users on 7/29. 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 8/206:00 am
JFK
- STL
1 stop4h 54m
Delta
Fri 8/2112:52 pm
STL
- JFK
1 stop6h 00m
Delta
Deal found 7/29![Delta logo]()
$349
This Kiwi.com deal was found by Cheapflights users on 7/30. 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.
Thu 8/2010:33 am
SWF
- STL
1 stop29h 55m
Multiple Airlines
Mon 8/247:58 pm
STL
- SWF
2 stops14h 10m
Multiple Airlines
Deal found 7/30![Multiple Airlines logo]()
$434
This United Airlines deal was found by Cheapflights users on 7/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/286:00 am
EWR
- STL
1 stop7h 02m
United Airlines
Mon 8/314:50 pm
STL
- EWR
Nonstop2h 40m
United Airlines
Deal found 7/29![United Airlines logo]()
$419
This Delta deal was found by Cheapflights users on 7/29. 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.
Mon 8/316:59 pm
EWR
- STL
1 stop5h 59m
Delta
Wed 9/25:30 pm
STL
- EWR
1 stop4h 55m
Delta
Deal found 7/29![Delta logo]()
$361
This United Airlines deal was found by Cheapflights users on 7/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/17:29 pm
EWR
- STL
Nonstop2h 40m
United Airlines
Tue 10/612:20 pm
STL
- EWR
Nonstop2h 27m
United Airlines
Deal found 7/27![United Airlines logo]()
$426
Last-minute flights to St. CharlesDiscover last-minute flight deals to St. Charles. Data last updated August 1, 2026 and is based on user searches.
Discover last-minute flight deals to St. Charles. Data last updated August 1, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 7/29. 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.
Tue 8/1110:00 pm
LGA
- STL
1 stop11h 57m
Frontier
Tue 8/185:27 pm
STL
- LGA
1 stop27h 33m
Frontier
Deal found 7/29![Frontier logo]()
$298
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/144:59 pm
LGA
- STL
1 stop16h 58m
Frontier
Sun 8/166:34 pm
STL
- LGA
1 stop25h 10m
Frontier
Deal found 7/27![Frontier logo]()
$296
This Delta deal was found by Cheapflights users on 7/28. 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.
Wed 8/196:00 am
EWR
- STL
1 stop4h 54m
Delta
Mon 8/246:25 pm
STL
- EWR
1 stop4h 00m
Delta
Deal found 7/28![Delta logo]()
$313
This Southwest deal was found by Cheapflights users on 7/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2012:00 pm
LGA
- STL
Nonstop2h 40m
Southwest
Mon 8/245:40 am
STL
- LGA
Nonstop2h 20m
Southwest
Deal found 7/29![Southwest logo]()
$293
This Kiwi.com deal was found by Cheapflights users on 7/30. 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.
Thu 8/206:18 am
LGA
- STL
1 stop12h 04m
Frontier
Sun 8/236:17 pm
STL
- LGA
1 stop25h 42m
Frontier
Deal found 7/30![Frontier logo]()
$294
This American Airlines deal was found by Cheapflights users on 7/30. 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.
Thu 8/206:55 am
LGA
- STL
Nonstop2h 48m
American Airlines
Mon 8/246:00 am
STL
- LGA
Nonstop2h 29m
American Airlines
Deal found 7/30![American Airlines logo]()
$295
This Kiwi.com deal was found by Cheapflights users on 7/30. 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.
Thu 8/201:00 pm
JFK
- STL
2 stops27h 28m
Frontier
Mon 8/246:17 pm
STL
- JFK
1 stop16h 37m
Frontier
Deal found 7/30![Frontier logo]()
$296
This Kiwi.com deal was found by Cheapflights users on 7/28. 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.
Thu 8/206:18 am
LGA
- STL
1 stop12h 04m
Frontier
Mon 8/247:58 pm
STL
- LGA
2 stops24h 01m
Frontier
Deal found 7/28![Frontier logo]()
$299
This Delta deal was found by Cheapflights users on 7/28. 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 8/206:30 am
LGA
- STL
Nonstop2h 38m
Delta
Mon 8/243:39 pm
STL
- LGA
1 stop5h 48m
Delta
Deal found 7/28![Delta logo]()
$304
This Delta deal was found by Cheapflights users on 7/28. 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 8/206:00 am
JFK
- STL
1 stop4h 54m
Delta
Mon 8/245:23 pm
STL
- JFK
1 stop6h 51m
Delta
Deal found 7/28![Delta logo]()
$313
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/276:18 am
LGA
- STL
1 stop12h 04m
Frontier
Sun 8/306:17 pm
STL
- LGA
1 stop20h 43m
Frontier
Deal found 7/27![Frontier logo]()
$297
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/291:35 pm
EWR
- STL
2 stops27h 36m
Frontier
Mon 8/316:17 pm
STL
- EWR
1 stop5h 46m
Frontier
Deal found 7/27![Frontier logo]()
$315
One-way flights to St. CharlesSearch for one-way flight options to St. Charles. Find affordable one-way fares based on user searches. Data last updated August 1, 2026.
Search for one-way flight options to St. Charles. Find affordable one-way fares based on user searches. Data last updated August 1, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/30. 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.
Sun 10/2511:30 am
EWR
- STL
2 stops23h 10m
Frontier
Deal found 7/30![Frontier logo]()
$108
This Kiwi.com deal was found by Cheapflights users on 7/30. 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.
Sun 8/307:31 pm
SWF
- STL
2 stops22h 51m
Multiple Airlines
Deal found 7/30![Multiple Airlines logo]()
$111
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/275:55 am
EWR
- STL
2 stops32h 15m
Frontier
Deal found 7/31![Frontier logo]()
$112
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1510:18 am
SWF
- STL
2 stops24h 22m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$113
This Frontier deal was found by Cheapflights users on 7/30. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/145:55 am
EWR
- STL
1 stop11h 39m
Frontier
Deal found 7/30![Frontier logo]()
$114
This Trip.com deal was found by Cheapflights users on 7/30. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/315:55 am
EWR
- STL
1 stop12h 27m
Frontier
Deal found 7/30![Frontier logo]()
$116
This Trip.com deal was found by Cheapflights users on 7/31. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/110:29 pm
EWR
- STL
1 stop12h 11m
Frontier
Deal found 7/31![Frontier logo]()
$117
This Kiwi.com deal was found by Cheapflights users on 7/28. 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.
Thu 10/110:28 am
SWF
- STL
2 stops27h 42m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$118
This Kiwi.com deal was found by Cheapflights users on 7/29. 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.
Wed 8/2610:29 pm
EWR
- STL
1 stop19h 53m
Frontier
Deal found 7/29![Frontier logo]()
$118
This Kiwi.com deal was found by Cheapflights users on 7/30. 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.
Sun 10/2511:58 am
SWF
- STL
2 stops46h 42m
Multiple Airlines
Deal found 7/30![Multiple Airlines logo]()
$119
This Kiwi.com deal was found by Cheapflights users on 7/28. 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.
Mon 8/245:55 am
EWR
- STL
1 stop12h 27m
Frontier
Deal found 7/28![Frontier logo]()
$119
This Trip.com deal was found by Cheapflights users on 7/31. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1511:30 am
EWR
- STL
1 stop9h 09m
Frontier
Deal found 7/31![Frontier logo]()
$120
Find flight deals to St. Charles
Find the latest flights to St. Charles in 2026, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 2,558,603 searches and data was last updated on August 1, 2026.
Popular in | July |
|---|---|
Cheapest in | January |
Average price | $359 |
Round-trip from | $256 |
One-way from | $108 |
Cheapflights Fare Finder
Locate flights to St. Charles that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 2,558,603 searches and data was last updated on August 1, 2026.
Use the filters below to find and compare flights to St. Charles that are best for you.
Fly from
Route
Depart
Return
Cheapest round-trip
New YorkSt. Louis
LGA - STL
LGASTL
New York LaGuardia
Tue 9/15
5:45 pm-7:35 pm
Nonstop2h 50m
Lambert-St Louis
Thu 9/17
5:40 am-9:00 am
Nonstop2h 20m
$293
New WindsorSt. Louis
SWF - STL
SWFSTL
New Windsor Stewart
Fri 9/4
12:17 pm-4:11 pm
2 stops28h 54m
Lambert-St Louis
Thu 9/10
6:39 pm-10:16 am
1 stop14h 37m
$302
New YorkSt. Louis
LGA - STL
LGASTL
New York LaGuardia
Wed 8/26
7:25 am-11:20 am
1 stop4h 55m
Lambert-St Louis
Wed 9/2
7:55 pm-11:15 pm
Nonstop2h 20m
$303
New YorkSt. Louis
LGA - STL
LGASTL
New York LaGuardia
Sat 9/5
6:00 am-2:15 pm
1 stop9h 15m
Lambert-St Louis
Mon 9/7
5:40 am-9:00 am
Nonstop2h 20m
$303
New WindsorSt. Louis
SWF - STL
SWFSTL
New Windsor Stewart
Thu 9/10
10:56 am-5:54 pm
1 stop7h 58m
Lambert-St Louis
Sun 9/13
5:19 pm-10:31 am
1 stop16h 12m
$304
New YorkSt. Louis
LGA - STL
LGASTL
New York LaGuardia
Thu 10/1
8:55 am-12:15 pm
1 stop4h 20m
Lambert-St Louis
Tue 10/6
8:30 am-4:50 pm
1 stop7h 20m
$308
New YorkSt. Louis
JFK - STL
JFKSTL
New York John F Kennedy Intl
Thu 8/20
6:00 am-9:54 am
1 stop4h 54m
Lambert-St Louis
Mon 8/24
5:23 pm-1:14 am
1 stop6h 51m
$312
New YorkSt. Louis
JFK - STL
JFKSTL
New York John F Kennedy Intl
Sat 10/17
6:00 am-10:51 am
1 stop5h 51m
Lambert-St Louis
Tue 10/20
5:35 pm-12:59 am
1 stop6h 24m
$313
New YorkSt. Louis
JFK - STL
JFKSTL
New York John F Kennedy Intl
Sat 9/12
8:35 am-12:32 pm
1 stop4h 57m
Lambert-St Louis
Sat 9/19
3:54 pm-10:02 pm
1 stop5h 08m
$313
New YorkSt. Louis
LGA - STL
LGASTL
New York LaGuardia
Fri 10/16
6:25 pm-8:14 pm
Nonstop2h 49m
Lambert-St Louis
Tue 10/20
10:00 am-1:21 pm
Nonstop2h 21m
$329
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight to St. Charles
Have a flexible travel schedule? Discover the best time to fly to St. Charles with our price prediction graph.
LGA-STL
JFK-STL
EWR-STL
SWF-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 to St. Charles
NYC-CH5
LGA-STL
JFK-STL
EWR-STL
SWF-STL
How long is the flight to St. Charles?
On average, a flight from New York to St. Charles takes 4 hours 27 minutes. Flights to St. Charles from other popular cities in USA will vary in length. Below are a few examples of popular routes and their flight times.
Weekly flight availability to St. Charles
The most flights from New York to St. Charles are scheduled on a Thursday (19 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (7 on average).
What are the most popular airlines that fly to St. Charles?
The most popular airlines flying from New York to St. Charles are United Airlines, Delta and American Airlines.
What are the cheapest airlines that fly to St. Charles?
The cheapest airlines flying from New York to St. Charles are Frontier, Delta and Southwest.
Rainfall in St. Charles by month
Plan your trip to St. Charles by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in St. Charles 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. Charles when rainfall is around 2.2 in.
Temperature in St. Charles by month
Plan your trip to St. Charles by taking into account the average temperature totals by month.
If weather is an important factor for your trip to St. Charles, 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).
When is the cheapest time to fly to St. Charles?
Use this chart to determine the cheapest time to fly round-trip from New York to St. Charles. Price data was last updated on July 25, 2026.
Users looking for the lowest fares to St. Charles should consider flying on Saturday evenings, when prices are typically cheapest. Budget-minded travelers will want to avoid Sunday at noon, when prices are usually at their highest.
Reviews of airlines servicing St. Charles
Get insights into the airlines that provide service to St. Charles. 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. Charles. Reviews last updated August 1, 2026.
Read reviews from past customers who have flown Southwest,Delta, andUnited Airlines to the United States. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.6
Food
7.0
Overall
8.0
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
2.0
MediocreAnonymous,Feb 2025
MCO - STL
Crew
8.6
Food
7.0
Overall
8.0
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
2.0
MediocreAnonymous,Feb 2025
MCO - STL
Crew
8.6
Food
7.0
Overall
8.0
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
2.0
MediocreAnonymous,Feb 2025
MCO - STL
Crew
8.6
Food
7.0
Overall
8.0
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
2.0
MediocreAnonymous,Feb 2025
MCO - STL
Crew
8.6
Food
7.0
Overall
8.0
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
2.0
MediocreAnonymous,Feb 2025
MCO - STL
Crew
8.6
Food
7.0
Overall
8.0
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
2.0
MediocreAnonymous,Feb 2025
MCO - STL
FAQs about flying to St. Charles
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