$62+ 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 1/23. Fares are subject to change and may not be available on all flights or dates of travel.
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Flights to St. Charles in 2025
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 December 15, 2025.
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 December 15, 2025.
This United Airlines deal was found by Cheapflights users on 12/14. 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.
This United Airlines deal was found by Cheapflights users on 12/13. 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.
This United Airlines deal was found by Cheapflights users on 12/12. 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.
This Frontier deal was found by Cheapflights users on 12/13. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This American Airlines deal was found by Cheapflights users on 12/14. 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.
This United Airlines deal was found by Cheapflights users on 12/14. 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.
This Kiwi.com deal was found by Cheapflights users on 12/14. 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.
This Expedia deal was found by Cheapflights users on 12/15. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Delta deal was found by Cheapflights users on 12/13. 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.
This United Airlines deal was found by Cheapflights users on 12/13. 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.
This Kiwi.com deal was found by Cheapflights users on 12/14. 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.
This Kiwi.com deal was found by Cheapflights users on 12/12. 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.
Find flight deals to St. Charles
Find the latest flights to St. Charles in 2025, 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 December 15, 2025.
Popular in | December |
|---|---|
Cheapest in | March |
Average price | $439 |
Round-trip from | $127 |
One-way from | $62 |
Cheapflights Fare Finder
Use the filters below to find and compare flights to St. Charles that are best for you.
Fly from
Route
Depart
Return
Price
NewarkSt. Louis
EWR - STL
EWRSTL
Newark
Tue 1/13
9:57 pm-11:59 pm
Nonstop3h 02m
Lambert-St Louis
Sat 1/17
7:00 am-10:37 am
Nonstop2h 37m
NewarkSt. Louis
EWR - STL
EWRSTL
Newark
Sat 1/17
10:39 am-2:49 pm
1 stop5h 10m
Lambert-St Louis
Sun 1/18
9:59 am-5:29 pm
1 stop6h 30m
NewarkSt. Louis
EWR - STL
EWRSTL
Newark
Fri 2/6
8:35 am-10:41 am
Nonstop3h 06m
Lambert-St Louis
Sat 2/7
6:06 pm-9:50 pm
Nonstop2h 44m
NewarkSt. Louis
EWR - STL
EWRSTL
Newark
Tue 1/20
9:57 pm-11:59 pm
Nonstop3h 02m
Lambert-St Louis
Fri 1/23
7:00 am-10:37 am
Nonstop2h 37m
NewarkSt. Louis
EWR - STL
EWRSTL
Newark
Fri 2/13
9:59 pm-12:05 am
Nonstop3h 06m
Lambert-St Louis
Tue 2/17
7:41 am-3:16 pm
1 stop6h 35m
New YorkSt. Louis
JFK - STL
JFKSTL
New York John F Kennedy Intl
Tue 1/13
5:16 pm-9:51 pm
1 stop5h 35m
Lambert-St Louis
Thu 1/29
9:54 am-2:57 pm
1 stop4h 03m
New YorkSt. Louis
LGA - STL
LGASTL
New York LaGuardia
Fri 1/16
6:05 pm-8:06 pm
Nonstop3h 01m
Lambert-St Louis
Mon 1/19
6:25 am-9:54 am
Nonstop2h 29m
New YorkSt. Louis
LGA - STL
LGASTL
New York LaGuardia
Fri 2/27
6:10 pm-8:09 pm
Nonstop2h 59m
Lambert-St Louis
Sun 3/1
5:39 pm-9:05 pm
Nonstop2h 26m
NewarkSt. Louis
EWR - STL
EWRSTL
Newark
Fri 1/30
3:16 pm-5:18 pm
Nonstop3h 02m
Lambert-St Louis
Sun 2/1
7:00 am-10:37 am
Nonstop2h 37m
New YorkSt. Louis
LGA - STL
LGASTL
New York LaGuardia
Tue 1/20
6:30 am-5:10 pm
2 stops11h 40m
Lambert-St Louis
Fri 1/23
6:00 am-4:25 pm
1 stop9h 25m
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.
Cheapflights Insights
Everything you need to know about your flight to St. Charles
When is the best time to book a flight to St. Charles?
Use this chart to determine the optimal time to book a round-trip flight from New York to St. Charles. Price data was last updated on December 12, 2025.
The best time to book flights to St. Charles is 79 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
How long is the flight to St. Charles?
On average, a flight from New York to St. Charles takes 5 hours 2 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.
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 December 16, 2024.
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 evenings, when prices are usually at their highest.
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, Spirit Airlines and Delta.
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).
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 December 15, 2025.
Read reviews from past customers who have flown Southwest, Delta, and United 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.
Boarding
Food
Comfort
Overall
Entertainment
Crew
Reviews
Thomas,Dec 2025
SEA - DEN
Boarding
Food
Comfort
Overall
Entertainment
Crew
Reviews
Thomas,Dec 2025
SEA - DEN
Boarding
Food
Comfort
Overall
Entertainment
Crew
Reviews
Thomas,Dec 2025
SEA - DEN
Boarding
Food
Comfort
Overall
Entertainment
Crew
Reviews
Thomas,Dec 2025
SEA - DEN
Boarding
Food
Comfort
Overall
Entertainment
Crew
Reviews
Thomas,Dec 2025
SEA - DEN
Boarding
Food
Comfort
Overall
Entertainment
Crew
Reviews
Thomas,Dec 2025
SEA - DEN