$95+ Cheap flights to St. Charles
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/21. Fares are subject to change and may not be available on all flights or dates of travel.
— STL
Oct 15 — Oct 221
Round-trip
1 adult, Economy
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Find cheap flights to St. Charles 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
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Flights to St. Charles in 2026
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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 September 15, 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 September 15, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/11. 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.
Mon 10/56:15 am -
1 stop7h 55m
Wed 10/72:29 pm -
1 stop5h 30m
Deal found 9/11![Frontier logo]()
$242
This Expedia deal was found by Cheapflights users on 9/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/55:55 am -
1 stop11h 39m
Wed 10/72:29 pm -
1 stop5h 55m
Deal found 9/11![Frontier logo]()
$249
This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
Thu 10/2910:38 am -
2 stops32h 02m
Thu 11/124:26 pm -
1 stop23h 14m
Deal found 9/15![Multiple Airlines logo]()
$293
This Delta deal was found by Cheapflights users on 9/10. 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.
Thu 10/19:59 am -
Nonstop2h 44m
Tue 10/610:00 am -
Nonstop2h 21m
Deal found 9/10![Delta logo]()
$293
This American Airlines deal was found by Cheapflights users on 9/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/106:00 am -
1 stop5h 50m
Tue 10/131:20 pm -
1 stop4h 23m
Deal found 9/14![American Airlines logo]()
$295
This American Airlines deal was found by Cheapflights users on 9/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/107:14 am -
1 stop6h 21m
Tue 10/131:20 pm -
1 stop5h 12m
Deal found 9/14![American Airlines logo]()
$295
This Southwest deal was found by Cheapflights users on 9/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/298:55 am -
1 stop4h 20m
Thu 11/122:40 pm -
1 stop5h 15m
Deal found 9/14![Southwest logo]()
$296
This Southwest deal was found by Cheapflights users on 9/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/126:35 pm -
Nonstop3h 05m
Tue 11/178:25 am -
2 stops7h 20m
Deal found 9/13![Southwest logo]()
$297
This Delta deal was found by Cheapflights users on 9/14. 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.
Fri 10/306:25 pm -
Nonstop2h 49m
Thu 11/125:00 pm -
Nonstop2h 30m
Deal found 9/14![Delta logo]()
$299
This Kiwi.com deal was found by Cheapflights users on 9/11. 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 9/224:55 pm -
1 stop21h 15m
Fri 10/22:29 pm -
1 stop24h 31m
Deal found 9/11![Frontier logo]()
$300
This Frontier deal was found by Cheapflights users on 9/14. 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 11/136:30 am -
1 stop12h 10m
Mon 11/1612:14 pm -
1 stop6h 21m
Deal found 9/14![Frontier logo]()
$301
This American Airlines deal was found by Cheapflights users on 9/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/297:10 pm -
1 stop6h 09m
Thu 11/1210:25 am -
1 stop5h 06m
Deal found 9/15![American Airlines logo]()
$301
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 September 15, 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 September 15, 2026.
This Southwest deal was found by Cheapflights users on 9/15. 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.
Fri 11/64:25 pm -
Nonstop3h 00m
Sat 11/145:45 am -
2 stops6h 45m
Deal found 9/15![Southwest logo]()
$297
This Delta deal was found by Cheapflights users on 9/10. 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.
Thu 11/124:39 pm -
1 stop4h 50m
Sat 11/142:31 pm -
1 stop4h 49m
Deal found 9/10![Delta logo]()
$313
This United Airlines deal was found by Cheapflights users on 9/15. 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 11/411:22 am -
1 stop6h 37m
Sat 11/76:00 am -
Nonstop2h 21m
Deal found 9/15![United Airlines logo]()
$335
This Kiwi.com deal was found by Cheapflights users on 9/11. 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 10/1510:56 am -
1 stop13h 17m
Sat 10/174:30 pm -
1 stop16h 46m
Deal found 9/11![Multiple Airlines logo]()
$381
This Southwest deal was found by Cheapflights users on 9/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/228:30 am -
1 stop7h 25m
Tue 10/278:30 am -
2 stops7h 20m
Deal found 9/14![Southwest logo]()
$306
This Southwest deal was found by Cheapflights users on 9/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/126:30 am -
1 stop7h 15m
Tue 11/178:25 am -
2 stops7h 20m
Deal found 9/13![Southwest logo]()
$306
This Delta deal was found by Cheapflights users on 9/10. 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.
Sun 11/81:50 pm -
Nonstop2h 49m
Thu 11/125:00 pm -
Nonstop2h 30m
Deal found 9/10![Delta logo]()
$356
This Alaska Airlines deal was found by Cheapflights users on 9/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/124:00 pm -
2 stops32h 59m
Sat 11/147:00 am -
2 stops23h 39m
Deal found 9/10![Alaska Airlines logo]()
$714
This United Airlines deal was found by Cheapflights users on 9/15. 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 11/63:30 pm -
1 stop7h 10m
Sat 11/149:44 am -
Nonstop2h 31m
Deal found 9/15![United Airlines logo]()
$371
This Kiwi.com deal was found by Cheapflights users on 9/13. 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.
Sun 11/2210:56 am -
1 stop14h 03m
Wed 12/22:59 pm -
2 stops26h 00m
Deal found 9/13![Multiple Airlines logo]()
$384
This Southwest deal was found by Cheapflights users on 9/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/86:05 am -
Nonstop2h 40m
Thu 10/157:50 pm -
Nonstop2h 25m
Deal found 9/10![Southwest logo]()
$333
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Tue 10/137:29 pm -
Nonstop2h 40m
Sat 10/249:30 am -
Nonstop2h 38m
Deal found 9/10![United Airlines logo]()
$373
This Kiwi.com deal was found by Cheapflights users on 9/14. 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.
Sat 10/1712:39 pm -
2 stops11h 34m
Sat 10/244:30 pm -
1 stop16h 46m
Deal found 9/14![Multiple Airlines logo]()
$401
This Delta deal was found by Cheapflights users on 9/10. 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.
Tue 9/2910:55 am -
1 stop5h 59m
Fri 10/26:54 pm -
1 stop5h 05m
Deal found 9/10![Delta logo]()
$409
This United Airlines deal was found by Cheapflights users on 9/10. 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 10/147:00 am -
Nonstop2h 48m
Tue 10/209:30 am -
Nonstop2h 38m
Deal found 9/10![United Airlines logo]()
$373
This Southwest deal was found by Cheapflights users on 9/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/176:35 am -
2 stops10h 30m
Mon 10/193:35 pm -
Nonstop2h 20m
Deal found 9/14![Southwest logo]()
$368
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 10/2910:56 am -
1 stop13h 20m
Thu 11/54:26 pm -
2 stops18h 10m
Deal found 9/14![Multiple Airlines logo]()
$412
This United Airlines deal was found by Cheapflights users on 9/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/137:29 pm -
Nonstop2h 40m
Wed 10/211:29 pm -
1 stop5h 01m
Deal found 9/13![United Airlines logo]()
$399
This Kiwi.com deal was found by Cheapflights users on 9/11. 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 10/2210:56 am -
1 stop13h 17m
Sat 10/244:30 pm -
1 stop16h 46m
Deal found 9/11![Multiple Airlines logo]()
$423
This Southwest deal was found by Cheapflights users on 9/11. 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.
Fri 10/236:05 am -
Nonstop2h 40m
Tue 10/278:30 am -
2 stops7h 20m
Deal found 9/11![Southwest logo]()
$388
This Delta deal was found by Cheapflights users on 9/10. 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.
Thu 10/86:00 am -
1 stop5h 51m
Thu 10/157:20 pm -
1 stop4h 39m
Deal found 9/10![Delta logo]()
$487
This United Airlines deal was found by Cheapflights users on 9/14. 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 10/310:22 am -
1 stop4h 54m
Mon 10/55:36 pm -
1 stop4h 39m
Deal found 9/14![United Airlines logo]()
$414
This Southwest deal was found by Cheapflights users on 9/15. 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.
Fri 10/231:30 pm -
1 stop6h 35m
Sun 10/255:40 am -
Nonstop2h 20m
Deal found 9/15![Southwest logo]()
$388
This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
Thu 10/1510:56 am -
1 stop13h 17m
Thu 10/224:30 pm -
2 stops18h 06m
Deal found 9/15![Multiple Airlines logo]()
$445
This Southwest deal was found by Cheapflights users on 9/12. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/166:45 pm -
Nonstop2h 40m
Wed 10/213:35 pm -
Nonstop2h 20m
Deal found 9/12![Southwest logo]()
$391
This United Airlines deal was found by Cheapflights users on 9/11. 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.
Sat 10/177:57 pm -
Nonstop2h 40m
Mon 10/1912:20 pm -
Nonstop2h 27m
Deal found 9/11![United Airlines logo]()
$451
This Delta deal was found by Cheapflights users on 9/14. 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 10/14:34 pm -
1 stop5h 01m
Sun 10/46:40 am -
1 stop4h 20m
Deal found 9/14![Delta logo]()
$573
This Alaska Airlines deal was found by Cheapflights users on 9/14. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/64:27 pm -
2 stops23h 54m
Sun 11/86:00 am -
2 stops23h 22m
Deal found 9/14![Alaska Airlines logo]()
$789
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Sun 10/119:45 am -
Nonstop2h 37m
Fri 10/2312:20 pm -
Nonstop2h 27m
Deal found 9/10![United Airlines logo]()
$452
This Kiwi.com deal was found by Cheapflights users on 9/12. 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.
Thu 10/110:56 am -
1 stop7h 58m
Fri 10/22:29 pm -
2 stops20h 10m
Deal found 9/12![Multiple Airlines logo]()
$502
Last-minute flights to St. CharlesDiscover last-minute flight deals to St. Charles. Data last updated September 15, 2026 and is based on user searches.
Discover last-minute flight deals to St. Charles. Data last updated September 15, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 9/11. 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 9/224:55 pm -
1 stop21h 15m
Fri 10/22:29 pm -
1 stop24h 31m
Deal found 9/11![Frontier logo]()
$300
This Kiwi.com deal was found by Cheapflights users on 9/11. 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.
Mon 10/56:15 am -
1 stop7h 55m
Wed 10/72:29 pm -
1 stop5h 30m
Deal found 9/11![Frontier logo]()
$242
This Expedia deal was found by Cheapflights users on 9/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/55:55 am -
1 stop11h 39m
Wed 10/72:29 pm -
1 stop5h 55m
Deal found 9/11![Frontier logo]()
$249
This American Airlines deal was found by Cheapflights users on 9/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/66:54 am -
Nonstop2h 52m
Wed 10/74:18 pm -
Nonstop2h 30m
Deal found 9/10![American Airlines logo]()
$293
This American Airlines deal was found by Cheapflights users on 9/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/106:00 am -
1 stop5h 50m
Tue 10/131:20 pm -
1 stop4h 23m
Deal found 9/14![American Airlines logo]()
$295
This American Airlines deal was found by Cheapflights users on 9/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/107:14 am -
1 stop6h 21m
Tue 10/131:20 pm -
1 stop5h 12m
Deal found 9/14![American Airlines logo]()
$295
This American Airlines deal was found by Cheapflights users on 9/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/106:54 am -
Nonstop2h 52m
Mon 10/126:00 am -
Nonstop2h 29m
Deal found 9/15![American Airlines logo]()
$298
This Southwest deal was found by Cheapflights users on 9/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1512:05 pm -
Nonstop2h 40m
Tue 10/201:25 pm -
2 stops8h 00m
Deal found 9/13![Southwest logo]()
$297
This Delta deal was found by Cheapflights users on 9/14. 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.
Tue 10/206:00 am -
1 stop4h 49m
Fri 10/235:35 pm -
1 stop5h 05m
Deal found 9/14![Delta logo]()
$301
This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
Thu 10/2910:38 am -
2 stops32h 02m
Thu 11/124:26 pm -
1 stop23h 14m
Deal found 9/15![Multiple Airlines logo]()
$293
This Southwest deal was found by Cheapflights users on 9/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/298:55 am -
1 stop4h 20m
Thu 11/122:40 pm -
1 stop5h 15m
Deal found 9/14![Southwest logo]()
$296
This Delta deal was found by Cheapflights users on 9/14. 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.
Fri 10/306:25 pm -
Nonstop2h 49m
Thu 11/125:00 pm -
Nonstop2h 30m
Deal found 9/14![Delta logo]()
$299
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 September 15, 2026.
Search for one-way flight options to St. Charles. Find affordable one-way fares based on user searches. Data last updated September 15, 2026.
This CheapOair deal was found by Cheapflights users on 9/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2111:30 am -
1 stop7h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Frontier logo]()
$95
This Kiwi.com deal was found by Cheapflights users on 9/13. 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.
Tue 10/65:55 am -
2 stops32h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Frontier logo]()
$97
This Trip.com deal was found by Cheapflights users on 9/11. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2010:29 pm -
1 stop20h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Frontier logo]()
$102
This Kiwi.com deal was found by Cheapflights users on 9/11. 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 10/2710:14 pm -
1 stop20h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Frontier logo]()
$108
This CheapOair deal was found by Cheapflights users on 9/11. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3011:35 am -
1 stop7h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Frontier logo]()
$114
This Trip.com deal was found by Cheapflights users on 9/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1310:29 pm -
1 stop20h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Frontier logo]()
$116
This CheapOair deal was found by Cheapflights users on 9/12. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/411:35 am -
1 stop7h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/12![Frontier logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 9/12. 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.
Wed 10/286:00 am -
2 stops12h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/12![Frontier logo]()
$126
This Trip.com deal was found by Cheapflights users on 9/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1210:14 pm -
1 stop20h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Frontier logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 9/12. 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.
Thu 10/2910:38 am -
2 stops32h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/12![Multiple Airlines logo]()
$130
This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
Thu 10/2210:38 am -
2 stops32h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Multiple Airlines logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 10/1510:18 am -
2 stops32h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Multiple Airlines logo]()
$150
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 7,457,451 searches and data was last updated on September 15, 2026.
Popular in | July |
|---|---|
Cheapest in | January |
Average price | $370 |
Round-trip from | $242 |
One-way from | $95 |
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 7,457,451 searches and data was last updated on September 15, 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 Newark - STL Lambert-St Louis
EWRSTL
Newark
Wed 11/11
11:35 am-5:40 pm
1 stop7h 05m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$117
NewarkSt. Louis
EWR Newark - STL Lambert-St Louis
EWRSTL
Newark
Thu 11/12
10:14 pm-5:40 pm
1 stop20h 26m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$127
NewarkSt. Louis
EWR Newark - STL Lambert-St Louis
EWRSTL
Newark
Sat 11/7
7:15 am-1:20 pm
1 stop7h 05m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$133
New WindsorSt. Louis
SWF New Windsor Stewart - STL Lambert-St Louis
SWFSTL
New Windsor Stewart
Thu 10/22
10:38 am-5:40 pm
2 stops32h 02m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$146
NewarkSt. Louis
EWR Newark - STL Lambert-St Louis
EWRSTL
Newark
Sun 11/1
10:14 pm-5:40 pm
1 stop20h 26m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$148
New YorkSt. Louis
LGA New York LaGuardia - STL Lambert-St Louis
LGASTL
New York LaGuardia
Fri 11/13
1:59 pm-3:54 pm
Nonstop2h 55m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$159
New YorkSt. Louis
LGA New York LaGuardia - STL Lambert-St Louis
LGASTL
New York LaGuardia
Fri 10/23
1:50 pm-3:39 pm
Nonstop2h 49m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$159
New YorkSt. Louis
LGA New York LaGuardia - STL Lambert-St Louis
LGASTL
New York LaGuardia
Fri 10/23
1:30 pm-7:05 pm
1 stop6h 35m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$169
New YorkSt. Louis
LGA New York LaGuardia - STL Lambert-St Louis
LGASTL
New York LaGuardia
Fri 10/16
6:05 am-7:45 am
Nonstop2h 40m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$179
New YorkSt. Louis
LGA New York LaGuardia - STL Lambert-St Louis
LGASTL
New York LaGuardia
Sat 11/21
10:00 am-12:02 pm
Nonstop3h 02m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$185
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
EWR-STL
SWF-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
LGA-STL
EWR-STL
SWF-STL
JFK-STL
How long is the flight to St. Charles?
On average, a flight from New York to St. Charles takes 4 hours 35 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 (20 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (6 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 Southwest.
What are the cheapest airlines that fly to St. Charles?
The cheapest airlines flying from New York to St. Charles are Frontier, Delta and American Airlines.
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 September 12, 2026.
Users looking for the lowest fares to St. Charles should consider flying on Sunday afternoons, 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 September 15, 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
8.0
Boarding
8.1
Food
7.0
Crew
8.6
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Crew
8.6
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Crew
8.6
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Crew
8.6
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Crew
8.6
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Crew
8.6
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
FAQs about flying to St. Charles
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