$112+ 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 7 — Oct 141
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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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 7, 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 7, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/2. 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 11/155:37 pm -
2 stops25h 03m
Thu 11/194:26 pm -
1 stop17h 13m
Deal found 9/2![Multiple Airlines logo]()
$287
This Delta deal was found by Cheapflights users on 9/3. 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
Mon 10/55:30 pm -
Nonstop2h 30m
Deal found 9/3![Delta logo]()
$293
This Kiwi.com deal was found by Cheapflights users on 9/3. 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 9/231:00 pm -
2 stops29h 54m
Mon 9/282:29 pm -
1 stop20h 21m
Deal found 9/3![Frontier logo]()
$293
This Delta deal was found by Cheapflights users on 9/3. 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 10/33:05 pm -
Nonstop2h 47m
Mon 10/51:01 pm -
Nonstop2h 29m
Deal found 9/3![Delta logo]()
$294
This Frontier deal was found by Cheapflights users on 9/2. 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 9/116:15 am -
1 stop7h 55m
Mon 9/142:29 pm -
1 stop5h 30m
Deal found 9/2![Frontier logo]()
$295
This Super.com deal was found by Cheapflights users on 9/5. 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.
Wed 9/236:15 am -
1 stop7h 55m
Fri 9/252:29 pm -
1 stop5h 30m
Deal found 9/5![Frontier logo]()
$296
This Frontier deal was found by Cheapflights users on 9/2. 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 10/15:55 am -
1 stop12h 59m
Sun 10/45:19 pm -
1 stop6h 42m
Deal found 9/2![Frontier logo]()
$296
This Kiwi.com deal was found by Cheapflights users on 9/3. 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 10/14:55 pm -
1 stop21h 15m
Mon 10/58:10 pm -
2 stops22h 34m
Deal found 9/3![Frontier logo]()
$299
This Frontier deal was found by Cheapflights users on 9/6. 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.
Wed 10/1411:30 am -
1 stop7h 10m
Sun 10/184:30 pm -
1 stop7h 32m
Deal found 9/6![Frontier logo]()
$299
This Frontier deal was found by Cheapflights users on 9/2. 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 9/115:55 am -
1 stop11h 39m
Mon 9/145:19 pm -
1 stop6h 42m
Deal found 9/2![Frontier logo]()
$300
This Expedia deal was found by Cheapflights users on 9/5. 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.
Fri 11/139:29 am -
1 stop9h 11m
Sun 11/1512:14 pm -
1 stop6h 21m
Deal found 9/5![Frontier logo]()
$301
This Kiwi.com deal was found by Cheapflights users on 9/4. 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 10/1911:30 am -
1 stop7h 10m
Mon 10/266:35 pm -
1 stop15h 01m
Deal found 9/4![Frontier 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 7, 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 7, 2026.
This Delta deal was found by Cheapflights users on 9/2. 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 10/33:05 pm -
Nonstop2h 47m
Mon 10/51:01 pm -
Nonstop2h 29m
Deal found 9/2![Delta logo]()
$293
This Southwest deal was found by Cheapflights users on 9/3. 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
Mon 11/25:35 pm -
Nonstop2h 20m
Deal found 9/3![Southwest logo]()
$299
This Kiwi.com deal was found by Cheapflights users on 9/5. 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
Sun 11/14:26 pm -
1 stop24h 45m
Deal found 9/5![Multiple Airlines logo]()
$338
This United Airlines deal was found by Cheapflights users on 9/2. 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 11/48:45 am -
Nonstop3h 03m
Sat 11/76:50 pm -
1 stop5h 08m
Deal found 9/2![United Airlines logo]()
$383
This Delta deal was found by Cheapflights users on 9/3. 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 11/49:59 am -
Nonstop2h 48m
Sat 11/710:47 am -
1 stop5h 56m
Deal found 9/3![Delta logo]()
$303
This Southwest deal was found by Cheapflights users on 9/2. 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 10/36:15 am -
2 stops10h 45m
Mon 10/53:05 pm -
1 stop5h 20m
Deal found 9/2![Southwest logo]()
$324
This Delta deal was found by Cheapflights users on 9/2. 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 10/177:00 am -
1 stop4h 51m
Tue 10/206:00 am -
1 stop6h 36m
Deal found 9/2![Delta logo]()
$313
This Kiwi.com deal was found by Cheapflights users on 9/5. 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
Sun 10/254:30 pm -
1 stop24h 41m
Deal found 9/5![Multiple Airlines logo]()
$367
This Delta deal was found by Cheapflights users on 9/3. 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 10/311:15 am -
1 stop6h 17m
Mon 10/56:54 pm -
1 stop5h 06m
Deal found 9/3![Delta logo]()
$313
This Alaska Airlines deal was found by Cheapflights users on 9/4. 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 10/25:29 pm -
2 stops31h 30m
Fri 10/94:42 pm -
1 stop28h 47m
Deal found 9/4![Alaska Airlines logo]()
$768
This Southwest deal was found by Cheapflights users on 9/3. 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 11/512:30 pm -
Nonstop3h 00m
Sun 11/85:30 am -
Nonstop2h 20m
Deal found 9/3![Southwest logo]()
$356
This Kiwi.com deal was found by Cheapflights users on 9/5. 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 11/1210:56 am -
1 stop13h 20m
Sun 11/154:26 pm -
1 stop24h 48m
Deal found 9/5![Multiple Airlines logo]()
$380
This United Airlines deal was found by Cheapflights users on 9/3. 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 11/237:59 pm -
Nonstop2h 53m
Fri 11/276:00 am -
Nonstop2h 21m
Deal found 9/3![United Airlines logo]()
$425
This Southwest deal was found by Cheapflights users on 9/3. 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
Sun 11/15:35 pm -
Nonstop2h 20m
Deal found 9/3![Southwest logo]()
$362
This Kiwi.com deal was found by Cheapflights users on 9/6. 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
Sun 10/184:30 pm -
1 stop24h 41m
Deal found 9/6![Multiple Airlines logo]()
$394
This United Airlines deal was found by Cheapflights users on 9/2. 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 10/17:17 am -
1 stop5h 56m
Sun 10/47:30 am -
Nonstop2h 30m
Deal found 9/2![United Airlines logo]()
$446
This Southwest deal was found by Cheapflights users on 9/4. 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.
Mon 10/56:05 am -
Nonstop2h 40m
Tue 10/611:05 am -
Nonstop2h 20m
Deal found 9/4![Southwest logo]()
$371
This Delta deal was found by Cheapflights users on 9/6. 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 10/136:45 am -
Nonstop2h 44m
Tue 10/201:02 pm -
Nonstop2h 28m
Deal found 9/6![Delta logo]()
$373
This Kiwi.com deal was found by Cheapflights users on 9/2. 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 9/2710:56 am -
2 stops27h 14m
Thu 10/16:39 pm -
1 stop24h 19m
Deal found 9/2![Multiple Airlines logo]()
$403
This Southwest deal was found by Cheapflights users on 9/6. 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 10/16:05 am -
Nonstop2h 40m
Mon 10/55:40 am -
Nonstop2h 20m
Deal found 9/6![Southwest logo]()
$373
This United Airlines deal was found by Cheapflights users on 9/5. 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 9/297:29 pm -
Nonstop2h 40m
Fri 10/27:30 am -
Nonstop2h 30m
Deal found 9/5![United Airlines logo]()
$453
This Delta deal was found by Cheapflights users on 9/6. 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 10/226:00 am -
1 stop5h 51m
Mon 10/267:00 am -
1 stop5h 26m
Deal found 9/6![Delta logo]()
$393
This Kiwi.com deal was found by Cheapflights users on 9/2. 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 11/2011:29 am -
1 stop25h 56m
Sun 11/225:59 pm -
1 stop15h 40m
Deal found 9/2![Multiple Airlines logo]()
$406
This United Airlines deal was found by Cheapflights users on 9/6. 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 10/97:00 am -
Nonstop2h 48m
Mon 10/127:30 am -
Nonstop2h 30m
Deal found 9/6![United Airlines logo]()
$453
This Southwest deal was found by Cheapflights users on 9/3. 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 11/192:05 pm -
1 stop8h 00m
Sun 11/228:30 am -
1 stop6h 15m
Deal found 9/3![Southwest logo]()
$376
This United Airlines deal was found by Cheapflights users on 9/3. 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 10/237:29 pm -
Nonstop2h 40m
Sun 10/256:09 am -
Nonstop2h 20m
Deal found 9/3![United Airlines logo]()
$455
This Kiwi.com deal was found by Cheapflights users on 9/4. 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
Sun 10/45:19 pm -
2 stops17h 17m
Deal found 9/4![Multiple Airlines logo]()
$434
This United Airlines deal was found by Cheapflights users on 9/6. 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 10/12:18 pm -
Nonstop2h 42m
Mon 10/55:36 pm -
1 stop4h 39m
Deal found 9/6![United Airlines logo]()
$463
This Alaska Airlines deal was found by Cheapflights users on 9/5. 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 10/299:30 am -
2 stops15h 29m
Sun 11/17:00 am -
1 stop31h 37m
Deal found 9/5![Alaska Airlines logo]()
$783
This Kiwi.com deal was found by Cheapflights users on 9/3. 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
Mon 10/55:19 pm -
2 stops41h 20m
Deal found 9/3![Multiple Airlines logo]()
$443
Last-minute flights to St. CharlesDiscover last-minute flight deals to St. Charles. Data last updated September 7, 2026 and is based on user searches.
Discover last-minute flight deals to St. Charles. Data last updated September 7, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 9/2. 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 9/116:15 am -
1 stop7h 55m
Mon 9/142:29 pm -
1 stop5h 30m
Deal found 9/2![Frontier logo]()
$295
This Frontier deal was found by Cheapflights users on 9/2. 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 9/115:55 am -
1 stop11h 39m
Mon 9/145:19 pm -
1 stop6h 42m
Deal found 9/2![Frontier logo]()
$300
This Kiwi.com deal was found by Cheapflights users on 9/3. 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 9/231:00 pm -
2 stops29h 54m
Mon 9/282:29 pm -
1 stop20h 21m
Deal found 9/3![Frontier logo]()
$293
This Super.com deal was found by Cheapflights users on 9/5. 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.
Wed 9/236:15 am -
1 stop7h 55m
Fri 9/252:29 pm -
1 stop5h 30m
Deal found 9/5![Frontier logo]()
$296
This Delta deal was found by Cheapflights users on 9/3. 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
Mon 10/55:30 pm -
Nonstop2h 30m
Deal found 9/3![Delta logo]()
$293
This Frontier deal was found by Cheapflights users on 9/2. 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 10/15:55 am -
1 stop12h 59m
Sun 10/45:19 pm -
1 stop6h 42m
Deal found 9/2![Frontier logo]()
$296
This Kiwi.com deal was found by Cheapflights users on 9/3. 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 10/14:55 pm -
1 stop21h 15m
Mon 10/58:10 pm -
2 stops22h 34m
Deal found 9/3![Frontier logo]()
$299
This Delta deal was found by Cheapflights users on 9/3. 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 10/33:05 pm -
Nonstop2h 47m
Mon 10/51:01 pm -
Nonstop2h 29m
Deal found 9/3![Delta logo]()
$294
This Frontier deal was found by Cheapflights users on 9/6. 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.
Wed 10/1411:30 am -
1 stop7h 10m
Sun 10/184:30 pm -
1 stop7h 32m
Deal found 9/6![Frontier logo]()
$299
This United Airlines deal was found by Cheapflights users on 9/3. 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 10/179:45 am -
Nonstop2h 48m
Tue 10/2011:35 am -
1 stop4h 43m
Deal found 9/3![United Airlines logo]()
$303
This Kiwi.com deal was found by Cheapflights users on 9/4. 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 10/1911:30 am -
1 stop7h 10m
Mon 10/266:35 pm -
1 stop15h 01m
Deal found 9/4![Frontier logo]()
$301
This KAYAK deal was found by Cheapflights users on 9/2. 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.
Tue 10/276:25 pm -
Nonstop2h 49m
Thu 10/297:00 am -
Nonstop2h 26m
Deal found 9/2![Delta logo]()
$301
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 7, 2026.
Search for one-way flight options to St. Charles. Find affordable one-way fares based on user searches. Data last updated September 7, 2026.
This Super.com deal was found by Cheapflights users on 9/5. 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.
Wed 10/2111:30 am -
1 stop7h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Frontier logo]()
$112
This Priceline deal was found by Cheapflights users on 9/4. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1111:35 am -
1 stop7h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Frontier logo]()
$113
This Super.com deal was found by Cheapflights users on 9/3. 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.
Wed 10/1411:30 am -
1 stop7h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Frontier logo]()
$115
This Super.com deal was found by Cheapflights users on 9/3. 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.
Thu 9/245:55 am -
1 stop12h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Frontier logo]()
$116
This Jetabroad deal was found by Cheapflights users on 9/3. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2811:35 am -
1 stop7h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Frontier logo]()
$120
This Kiwi.com deal was found by Cheapflights users on 9/2. 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 9/291:30 pm -
2 stops24h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Frontier logo]()
$121
This Kiwi.com deal was found by Cheapflights users on 9/2. 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 -
2 stops30h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Multiple Airlines logo]()
$123
This Kiwi.com deal was found by Cheapflights users on 9/3. 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 10/411:48 am -
2 stops26h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Multiple Airlines logo]()
$125
This Kiwi.com deal was found by Cheapflights users on 9/4. 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 9/2612:39 pm -
2 stops49h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Multiple Airlines logo]()
$126
This Frontier deal was found by Cheapflights users on 9/2. 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 11/1611:35 am -
1 stop7h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Frontier logo]()
$126
This Trip.com deal was found by Cheapflights users on 9/3. 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.
Wed 11/411:35 am -
1 stop7h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Frontier logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 9/2. 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 9/3012:39 pm -
2 stops49h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Multiple Airlines logo]()
$130
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 7, 2026.
Popular in | July |
|---|---|
Cheapest in | January |
Average price | $370 |
Round-trip from | $287 |
One-way from | $112 |
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 7, 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 WindsorSt. Louis
SWF New Windsor Stewart - STL Lambert-St Louis
SWFSTL
New Windsor Stewart
Sun 10/25
11:58 am-5:40 pm
2 stops30h 42m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$123
New WindsorSt. Louis
SWF New Windsor Stewart - STL Lambert-St Louis
SWFSTL
New Windsor Stewart
Sun 10/4
11:48 am-1:10 pm
2 stops26h 22m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$127
New WindsorSt. Louis
SWF New Windsor Stewart - STL Lambert-St Louis
SWFSTL
New Windsor Stewart
Thu 10/15
10:18 am-5:40 pm
2 stops32h 22m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$140
New YorkSt. Louis
LGA New York LaGuardia - STL Lambert-St Louis
LGASTL
New York LaGuardia
Mon 3/1
10:00 am-11:59 am
Nonstop2h 59m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$147
New YorkSt. Louis
LGA New York LaGuardia - STL Lambert-St Louis
LGASTL
New York LaGuardia
Sat 2/6
10:00 am-11:59 am
Nonstop2h 59m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$147
New YorkSt. Louis
LGA New York LaGuardia - STL Lambert-St Louis
LGASTL
New York LaGuardia
Sat 10/31
7:15 am-12:12 pm
1 stop5h 57m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$157
New YorkSt. Louis
LGA New York LaGuardia - STL Lambert-St Louis
LGASTL
New York LaGuardia
Tue 3/2
12:00 pm-6:01 pm
1 stop7h 01m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$157
New YorkSt. Louis
LGA New York LaGuardia - STL Lambert-St Louis
LGASTL
New York LaGuardia
Fri 2/26
7:00 am-12:06 pm
1 stop6h 06m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$176
New YorkSt. Louis
LGA New York LaGuardia - STL Lambert-St Louis
LGASTL
New York LaGuardia
Wed 2/24
1:15 pm-3:15 pm
Nonstop3h 00m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$185
New YorkSt. Louis
LGA New York LaGuardia - STL Lambert-St Louis
LGASTL
New York LaGuardia
Tue 2/23
1:15 pm-3:15 pm
Nonstop3h 00m
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.
SWF-STL
LGA-STL
JFK-STL
EWR-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
SWF-STL
LGA-STL
JFK-STL
EWR-STL
How long is the flight to St. Charles?
On average, a flight from New York to St. Charles takes 4 hours 25 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.
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 5, 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 7, 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.
Food
7.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Comfort
8.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Food
7.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Comfort
8.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Food
7.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Comfort
8.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Food
7.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Comfort
8.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Food
7.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Comfort
8.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Food
7.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Comfort
8.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
FAQs about flying to St. Charles
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