$101+ 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 8/25. Fares are subject to change and may not be available on all flights or dates of travel.
— STL
Jul 16 — Jul 231
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 June 16, 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 June 16, 2026.
This United Airlines deal was found by Cheapflights users on 6/15. 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 7/810:17 pm
EWR
- STL
Nonstop2h 27m
United Airlines
Sat 7/116:00 am
STL
- EWR
1 stop5h 06m
United Airlines
Deal found 6/15![United Airlines logo]()
$303
This Frontier deal was found by Cheapflights users on 6/11. 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.
Thu 6/255:58 am
EWR
- STL
1 stop12h 32m
Frontier
Mon 7/64:57 pm
STL
- EWR
1 stop7h 06m
Frontier
Deal found 6/11![Frontier logo]()
$304
This Frontier deal was found by Cheapflights users on 6/11. 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.
Sun 8/210:29 pm
EWR
- STL
1 stop11h 28m
Frontier
Mon 8/34:57 pm
STL
- EWR
1 stop7h 06m
Frontier
Deal found 6/11![Frontier logo]()
$305
This Frontier deal was found by Cheapflights users on 6/14. 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.
Thu 7/25:58 am
EWR
- STL
1 stop12h 32m
Frontier
Wed 7/84:57 pm
STL
- EWR
1 stop7h 06m
Frontier
Deal found 6/14![Frontier logo]()
$306
This Kiwi.com deal was found by Cheapflights users on 6/14. 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 7/310:29 pm
EWR
- STL
1 stop11h 23m
Frontier
Sun 8/96:34 pm
STL
- EWR
1 stop25h 54m
Frontier
Deal found 6/14![Frontier logo]()
$307
This Kiwi.com deal was found by Cheapflights users on 6/13. 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 7/95:55 am
EWR
- STL
1 stop12h 42m
Frontier
Mon 7/134:57 pm
STL
- EWR
1 stop7h 06m
Frontier
Deal found 6/13![Frontier logo]()
$308
This Kiwi.com deal was found by Cheapflights users on 6/15. 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 7/1010:29 pm
EWR
- STL
1 stop11h 28m
Frontier
Wed 7/298:08 pm
STL
- EWR
2 stops27h 55m
Frontier
Deal found 6/15![Frontier logo]()
$309
This CheapOair deal was found by Cheapflights users on 6/13. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/811:30 am
EWR
- STL
1 stop13h 29m
Frontier
Sat 7/114:57 pm
STL
- EWR
1 stop7h 06m
Frontier
Deal found 6/13![Frontier logo]()
$310
This Frontier deal was found by Cheapflights users on 6/14. 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.
Fri 7/310:29 pm
EWR
- STL
1 stop11h 23m
Frontier
Mon 8/104:57 pm
STL
- EWR
1 stop7h 06m
Frontier
Deal found 6/14![Frontier logo]()
$311
This Kiwi.com deal was found by Cheapflights users on 6/15. 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 8/1210:29 pm
EWR
- STL
1 stop20h 08m
Frontier
Wed 8/198:08 pm
STL
- EWR
2 stops13h 23m
Frontier
Deal found 6/15![Frontier logo]()
$312
This Delta deal was found by Cheapflights users on 6/11. 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 7/46:00 am
EWR
- STL
1 stop7h 34m
Delta
Wed 7/811:18 am
STL
- EWR
1 stop5h 35m
Delta
Deal found 6/11![Delta logo]()
$313
This Frontier deal was found by Cheapflights users on 6/11. 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.
Fri 6/2610:29 pm
EWR
- STL
1 stop11h 23m
Frontier
Tue 6/306:31 pm
STL
- EWR
1 stop5h 34m
Frontier
Deal found 6/11![Frontier logo]()
$314
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 June 16, 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 June 16, 2026.
This United Airlines deal was found by Cheapflights users on 6/11. 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.
Tue 8/189:59 pm
EWR
- STL
Nonstop2h 39m
United Airlines
Wed 8/265:30 pm
STL
- EWR
1 stop6h 27m
United Airlines
Deal found 6/11![United Airlines logo]()
$317
This Delta deal was found by Cheapflights users on 6/11. 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 8/66:00 am
EWR
- STL
1 stop4h 37m
Delta
Mon 8/1012:52 pm
STL
- EWR
1 stop7h 02m
Delta
Deal found 6/11![Delta logo]()
$317
This Southwest deal was found by Cheapflights users on 6/15. 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 8/1312:00 pm
LGA
- STL
Nonstop2h 40m
Southwest
Mon 8/178:00 pm
STL
- LGA
Nonstop2h 20m
Southwest
Deal found 6/15![Southwest logo]()
$321
This Kiwi.com deal was found by Cheapflights users on 6/14. 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 7/2111:48 am
SWF
- STL
1 stop13h 11m
Multiple Airlines
Tue 8/116:34 pm
STL
- SWF
2 stops15h 51m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$378
This KAYAK deal was found by Cheapflights users on 6/15. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/2212:00 pm
JFK
- STL
1 stop6h 19m
American Airlines
Tue 6/235:14 am
STL
- JFK
1 stop7h 34m
American Airlines
Deal found 6/15![American Airlines logo]()
$521
This Delta deal was found by Cheapflights users on 6/14. 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 7/411:45 am
LGA
- STL
Nonstop2h 48m
Delta
Wed 7/812:28 pm
STL
- LGA
Nonstop2h 38m
Delta
Deal found 6/14![Delta logo]()
$321
This Southwest deal was found by Cheapflights users on 6/11. 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 8/61:10 pm
LGA
- STL
2 stops7h 45m
Southwest
Mon 8/105:40 pm
STL
- LGA
1 stop4h 40m
Southwest
Deal found 6/11![Southwest logo]()
$325
This Delta deal was found by Cheapflights users on 6/11. 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 9/411:00 am
JFK
- STL
1 stop6h 17m
Delta
Tue 9/86:45 am
STL
- JFK
1 stop4h 21m
Delta
Deal found 6/11![Delta logo]()
$328
This United Airlines deal was found by Cheapflights users on 6/12. 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 7/2210:17 pm
EWR
- STL
Nonstop2h 27m
United Airlines
Wed 7/296:01 am
STL
- EWR
Nonstop2h 29m
United Airlines
Deal found 6/12![United Airlines logo]()
$373
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 8/1811:48 am
SWF
- STL
1 stop13h 26m
Multiple Airlines
Wed 8/265:33 pm
STL
- SWF
2 stops24h 08m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$381
This Delta deal was found by Cheapflights users on 6/13. 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 8/610:00 am
LGA
- STL
Nonstop2h 47m
Delta
Mon 8/107:00 am
STL
- LGA
1 stop5h 42m
Delta
Deal found 6/13![Delta logo]()
$331
This United Airlines deal was found by Cheapflights users on 6/15. 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.
Tue 7/710:07 pm
EWR
- STL
Nonstop2h 29m
United Airlines
Tue 7/146:01 am
STL
- EWR
Nonstop2h 29m
United Airlines
Deal found 6/15![United Airlines logo]()
$373
This Kiwi.com deal was found by Cheapflights users on 6/15. 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 7/711:48 am
SWF
- STL
1 stop13h 11m
Multiple Airlines
Wed 7/154:57 pm
STL
- SWF
2 stops15h 41m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$399
This Delta deal was found by Cheapflights users on 6/11. 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 9/106:59 am
LGA
- STL
Nonstop2h 45m
Delta
Sun 9/136:00 am
STL
- LGA
Nonstop2h 27m
Delta
Deal found 6/11![Delta logo]()
$333
This United Airlines deal was found by Cheapflights users on 6/11. 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 8/219:59 pm
EWR
- STL
Nonstop2h 39m
United Airlines
Mon 8/247:00 am
STL
- EWR
Nonstop2h 31m
United Airlines
Deal found 6/11![United Airlines logo]()
$382
This Delta deal was found by Cheapflights users on 6/13. 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 7/76:30 am
LGA
- STL
Nonstop2h 38m
Delta
Mon 7/135:00 pm
STL
- LGA
Nonstop2h 38m
Delta
Deal found 6/13![Delta logo]()
$341
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 8/610:33 am
SWF
- STL
1 stop14h 26m
Multiple Airlines
Mon 8/107:10 pm
STL
- SWF
2 stops46h 58m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$432
This United Airlines deal was found by Cheapflights users on 6/15. 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 7/247:12 pm
EWR
- STL
1 stop5h 17m
United Airlines
Sun 7/266:01 am
STL
- EWR
Nonstop2h 29m
United Airlines
Deal found 6/15![United Airlines logo]()
$399
This Delta deal was found by Cheapflights users on 6/15. 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 7/206:30 am
LGA
- STL
Nonstop2h 38m
Delta
Tue 7/215:00 pm
STL
- LGA
Nonstop2h 38m
Delta
Deal found 6/15![Delta logo]()
$341
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 stop9h 43m
Multiple Airlines
Sun 9/138:34 pm
STL
- SWF
1 stop12h 57m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$435
This United Airlines deal was found by Cheapflights users on 6/14. 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 7/44:45 pm
EWR
- STL
Nonstop2h 50m
United Airlines
Wed 7/86:01 am
STL
- EWR
Nonstop2h 29m
United Airlines
Deal found 6/14![United Airlines logo]()
$401
This Delta deal was found by Cheapflights users on 6/13. 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 7/176:30 am
LGA
- STL
Nonstop2h 38m
Delta
Tue 7/219:26 am
STL
- LGA
Nonstop2h 31m
Delta
Deal found 6/13![Delta logo]()
$341
This Kiwi.com deal was found by Cheapflights users on 6/14. 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 8/610:33 am
SWF
- STL
1 stop14h 26m
Multiple Airlines
Tue 8/116:34 pm
STL
- SWF
2 stops15h 51m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$438
This Delta deal was found by Cheapflights users on 6/15. 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 9/108:35 am
JFK
- STL
1 stop4h 57m
Delta
Sat 9/123:54 pm
STL
- JFK
1 stop5h 08m
Delta
Deal found 6/15![Delta logo]()
$341
This United Airlines deal was found by Cheapflights users on 6/15. 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.
Mon 7/1310:17 pm
EWR
- STL
Nonstop2h 27m
United Airlines
Wed 7/156:01 am
STL
- EWR
Nonstop2h 29m
United Airlines
Deal found 6/15![United Airlines logo]()
$432
This Kiwi.com deal was found by Cheapflights users on 6/12. 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 8/3111:56 am
SWF
- STL
1 stop13h 18m
Multiple Airlines
Thu 9/33:33 pm
STL
- SWF
2 stops17h 13m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$465
This Delta deal was found by Cheapflights users on 6/14. 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 7/306:29 pm
LGA
- STL
Nonstop3h 06m
Delta
Tue 8/47:00 am
STL
- LGA
1 stop4h 42m
Delta
Deal found 6/14![Delta logo]()
$351
This United Airlines deal was found by Cheapflights users on 6/14. 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 7/1710:17 pm
EWR
- STL
Nonstop2h 27m
United Airlines
Sat 8/84:53 pm
STL
- EWR
Nonstop2h 37m
United Airlines
Deal found 6/14![United Airlines logo]()
$435
This Kiwi.com deal was found by Cheapflights users on 6/15. 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 7/711:48 am
SWF
- STL
1 stop13h 11m
Multiple Airlines
Fri 7/178:08 pm
STL
- SWF
2 stops20h 46m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$471
This United Airlines deal was found by Cheapflights users on 6/15. 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 9/109:59 pm
EWR
- STL
Nonstop2h 39m
United Airlines
Sun 9/137:00 am
STL
- EWR
Nonstop2h 31m
United Airlines
Deal found 6/15![United Airlines logo]()
$435
Last-minute flights to St. CharlesDiscover last-minute flight deals to St. Charles. Data last updated June 16, 2026 and is based on user searches.
Discover last-minute flight deals to St. Charles. Data last updated June 16, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 6/11. 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.
Thu 6/255:58 am
EWR
- STL
1 stop12h 32m
Frontier
Mon 7/64:57 pm
STL
- EWR
1 stop7h 06m
Frontier
Deal found 6/11![Frontier logo]()
$304
This Frontier deal was found by Cheapflights users on 6/11. 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.
Fri 6/2610:29 pm
EWR
- STL
1 stop11h 23m
Frontier
Tue 6/306:31 pm
STL
- EWR
1 stop5h 34m
Frontier
Deal found 6/11![Frontier logo]()
$314
This United Airlines deal was found by Cheapflights users on 6/10. 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 7/110:17 pm
EWR
- STL
Nonstop2h 27m
United Airlines
Wed 7/86:00 am
STL
- EWR
1 stop5h 06m
United Airlines
Deal found 6/10![United Airlines logo]()
$303
This Frontier deal was found by Cheapflights users on 6/10. 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.
Thu 7/25:58 am
EWR
- STL
1 stop12h 32m
Frontier
Thu 7/96:34 pm
STL
- EWR
1 stop5h 29m
Frontier
Deal found 6/10![Frontier logo]()
$305
This Frontier deal was found by Cheapflights users on 6/14. 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.
Thu 7/25:58 am
EWR
- STL
1 stop12h 32m
Frontier
Wed 7/84:57 pm
STL
- EWR
1 stop7h 06m
Frontier
Deal found 6/14![Frontier logo]()
$306
This Kiwi.com deal was found by Cheapflights users on 6/14. 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 7/310:29 pm
EWR
- STL
1 stop11h 23m
Frontier
Sun 8/96:34 pm
STL
- EWR
1 stop25h 54m
Frontier
Deal found 6/14![Frontier logo]()
$307
This Frontier deal was found by Cheapflights users on 6/14. 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.
Fri 7/310:29 pm
EWR
- STL
1 stop11h 23m
Frontier
Mon 8/104:57 pm
STL
- EWR
1 stop7h 06m
Frontier
Deal found 6/14![Frontier logo]()
$311
This Delta deal was found by Cheapflights users on 6/10. 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 7/46:15 am
EWR
- STL
1 stop5h 13m
Delta
Wed 7/86:30 am
STL
- EWR
1 stop4h 26m
Delta
Deal found 6/10![Delta logo]()
$313
This Frontier deal was found by Cheapflights users on 6/10. 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.
Sun 7/55:55 am
EWR
- STL
1 stop12h 42m
Frontier
Sat 7/114:57 pm
STL
- EWR
1 stop7h 06m
Frontier
Deal found 6/10![Frontier logo]()
$312
This CheapOair deal was found by Cheapflights users on 6/13. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/811:30 am
EWR
- STL
1 stop13h 29m
Frontier
Sat 7/114:57 pm
STL
- EWR
1 stop7h 06m
Frontier
Deal found 6/13![Frontier logo]()
$310
This Kiwi.com deal was found by Cheapflights users on 6/13. 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 7/95:55 am
EWR
- STL
1 stop12h 42m
Frontier
Mon 7/134:57 pm
STL
- EWR
1 stop7h 06m
Frontier
Deal found 6/13![Frontier logo]()
$308
This Kiwi.com deal was found by Cheapflights users on 6/15. 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 7/1010:29 pm
EWR
- STL
1 stop11h 28m
Frontier
Wed 7/298:08 pm
STL
- EWR
2 stops27h 55m
Frontier
Deal found 6/15![Frontier logo]()
$309
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 June 16, 2026.
Search for one-way flight options to St. Charles. Find affordable one-way fares based on user searches. Data last updated June 16, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 8/251:30 pm
EWR
- STL
1 stop26h 18m
Frontier
Deal found 6/11![Frontier logo]()
$101
This Trip.com deal was found by Cheapflights users on 6/15. 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 8/2410:29 pm
EWR
- STL
1 stop20h 01m
Frontier
Deal found 6/15![Frontier logo]()
$103
This Trip.com deal was found by Cheapflights users on 6/13. 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.
Tue 9/15:55 am
EWR
- STL
1 stop12h 35m
Frontier
Deal found 6/13![Frontier logo]()
$104
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 9/125:55 am
EWR
- STL
1 stop28h 45m
Frontier
Deal found 6/11![Frontier logo]()
$107
This Trip.com deal was found by Cheapflights users on 6/13. 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.
Tue 7/215:55 am
EWR
- STL
1 stop12h 42m
Frontier
Deal found 6/13![Frontier logo]()
$108
This Trip.com deal was found by Cheapflights users on 6/12. 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 8/305:55 am
EWR
- STL
1 stop12h 35m
Frontier
Deal found 6/12![Frontier logo]()
$109
This Super.com deal was found by Cheapflights users on 6/11. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/410:29 pm
EWR
- STL
1 stop11h 28m
Frontier
Deal found 6/11![Frontier logo]()
$111
This Kiwi.com deal was found by Cheapflights users on 6/14. 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 8/135:55 am
EWR
- STL
1 stop28h 02m
Frontier
Deal found 6/14![Frontier logo]()
$112
This Kiwi.com deal was found by Cheapflights users on 6/13. 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 7/1010:29 pm
EWR
- STL
1 stop11h 28m
Frontier
Deal found 6/13![Frontier logo]()
$115
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 9/1212:39 pm
SWF
- STL
2 stops22h 01m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$137
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 9/2312:39 pm
SWF
- STL
2 stops22h 01m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$142
This Kiwi.com deal was found by Cheapflights users on 6/12. 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 7/2512:05 pm
SWF
- STL
2 stops45h 52m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$143
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 June 16, 2026.
Popular in | December |
|---|---|
Cheapest in | August |
Average price | $380 |
Round-trip from | $303 |
One-way from | $101 |
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 June 16, 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
NewarkSt. Louis
EWR - STL
EWRSTL
Newark
Tue 8/18
9:59 pm-11:38 pm
Nonstop2h 39m
Lambert-St Louis
Wed 8/26
5:30 pm-12:57 am
1 stop6h 27m
$317
NewarkSt. Louis
EWR - STL
EWRSTL
Newark
Thu 8/6
6:00 am-9:37 am
1 stop4h 37m
Lambert-St Louis
Mon 8/10
12:52 pm-8:54 pm
1 stop7h 02m
$317
New YorkSt. Louis
LGA - STL
LGASTL
New York LaGuardia
Thu 8/13
12:00 pm-1:40 pm
Nonstop2h 40m
Lambert-St Louis
Mon 8/17
8:00 pm-11:20 pm
Nonstop2h 20m
$321
New YorkSt. Louis
LGA - STL
LGASTL
New York LaGuardia
Sat 7/4
11:45 am-1:33 pm
Nonstop2h 48m
Lambert-St Louis
Wed 7/8
12:28 pm-4:06 pm
Nonstop2h 38m
$321
New YorkSt. Louis
LGA - STL
LGASTL
New York LaGuardia
Thu 8/6
1:10 pm-7:55 pm
2 stops7h 45m
Lambert-St Louis
Mon 8/10
5:40 pm-11:20 pm
1 stop4h 40m
$325
New YorkSt. Louis
JFK - STL
JFKSTL
New York John F Kennedy Intl
Fri 9/4
11:00 am-4:17 pm
1 stop6h 17m
Lambert-St Louis
Tue 9/8
6:45 am-12:06 pm
1 stop4h 21m
$328
New YorkSt. Louis
LGA - STL
LGASTL
New York LaGuardia
Thu 8/6
10:00 am-11:47 am
Nonstop2h 47m
Lambert-St Louis
Mon 8/10
7:00 am-1:42 pm
1 stop5h 42m
$331
New YorkSt. Louis
LGA - STL
LGASTL
New York LaGuardia
Thu 9/10
6:59 am-8:44 am
Nonstop2h 45m
Lambert-St Louis
Sun 9/13
6:00 am-9:27 am
Nonstop2h 27m
$333
New YorkSt. Louis
LGA - STL
LGASTL
New York LaGuardia
Tue 7/7
6:30 am-8:08 am
Nonstop2h 38m
Lambert-St Louis
Mon 7/13
5:00 pm-8:38 pm
Nonstop2h 38m
$341
New YorkSt. Louis
LGA - STL
LGASTL
New York LaGuardia
Mon 7/20
6:30 am-8:08 am
Nonstop2h 38m
Lambert-St Louis
Tue 7/21
5:00 pm-8:38 pm
Nonstop2h 38m
$341
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.
EWR-STL
SWF-STL
LGA-STL
JFK-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
EWR-STL
SWF-STL
LGA-STL
JFK-STL
How long is the flight to St. Charles?
On average, a flight from New York to St. Charles takes 4 hours 24 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 Monday (19 on average). You will have fewer flight options on Saturday, 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 June 13, 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 mornings, 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 June 16, 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.
Entertainment
7.5
Overall
7.9
Comfort
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Entertainment
7.5
Overall
7.9
Comfort
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Entertainment
7.5
Overall
7.9
Comfort
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Entertainment
7.5
Overall
7.9
Comfort
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Entertainment
7.5
Overall
7.9
Comfort
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Entertainment
7.5
Overall
7.9
Comfort
8.0
Crew
8.6
Food
7.0
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
FAQs about flying to St. Charles
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