$1,700+ Cheap flights to St. Charles
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/3. Fares are subject to change and may not be available on all flights or dates of travel.
Flights to St. Charles in 2025
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 647,157 searches and data was last updated on 20 January 2025.
Find flight deals to St. Charles
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 20 January 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 20 January 2025.
Find flights to St. Charles within your budget
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 647,157 searches and data was last updated on 20 January 2025.
Fly from
Route
Depart
Return
Price
SydneySt. Louis
SYD - STL
SYDSTL
Sydney Kingsford Smith
Wed 5/3
11:20-15:06
2 stops44h 46m
Lambert-St Louis
Wed 12/3
15:50-08:35
2 stops48h 45m
SydneySt. Louis
SYD - STL
SYDSTL
Sydney Kingsford Smith
Wed 5/3
11:15-16:21
2 stops22h 06m
Lambert-St Louis
Wed 12/3
06:15-09:00
1 stop34h 45m
SydneySt. Louis
SYD - STL
SYDSTL
Sydney Kingsford Smith
Thu 20/2
11:20-18:56
2 stops24h 36m
Lambert-St Louis
Thu 20/3
15:50-08:35
2 stops48h 45m
SydneySt. Louis
SYD - STL
SYDSTL
Sydney Kingsford Smith
Thu 13/3
11:15-23:09
1 stop27h 54m
Lambert-St Louis
Thu 20/3
06:15-09:00
1 stop34h 45m
SydneySt. Louis
SYD - STL
SYDSTL
Sydney Kingsford Smith
Sun 9/3
11:50-19:54
1 stop25h 04m
Lambert-St Louis
Fri 14/3
08:40-07:00
1 stop30h 20m
SydneySt. Louis
SYD - STL
SYDSTL
Sydney Kingsford Smith
Thu 13/3
21:00-15:31
3 stops58h 31m
Lambert-St Louis
Thu 20/3
17:33-19:00
3 stops57h 27m
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.
Travel insights for flights to St. Charles
Get recent, data-driven insights about flights to St. Charles including ideal travel times, pricing trends, and more.
How long is the flight to St. Charles?
On average, a flight from Sydney to St. Charles takes 19 hours 47 minutes. Flights to St. Charles from other popular cities in Australia 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 Sydney to St. Charles are Qantas Airways, United Airlines and American Airlines.
What are the cheapest airlines that fly to St. Charles?
The cheapest airlines flying from Sydney to St. Charles are Air Canada, United Airlines 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 56.0 - 119.0 mm per month. May is typically the wettest month, when rainfall can reach 119.0 mm. February is typically the driest time to visit St. Charles when rainfall is around 56.0 mm.
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 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 0.0 C).
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 20 January 2025.
Food
Boarding
Overall
Crew
Entertainment
Comfort
Reviews
Complete scam of an airline. They have reduced the space that one gets when buying a seat to the point that it's absurdly uncomfortable. Qantas is a much better airline.
Food
Boarding
Overall
Crew
Entertainment
Comfort
Reviews
Complete scam of an airline. They have reduced the space that one gets when buying a seat to the point that it's absurdly uncomfortable. Qantas is a much better airline.
Food
Boarding
Overall
Crew
Entertainment
Comfort
Reviews
Complete scam of an airline. They have reduced the space that one gets when buying a seat to the point that it's absurdly uncomfortable. Qantas is a much better airline.
Food
Boarding
Overall
Crew
Entertainment
Comfort
Reviews
Complete scam of an airline. They have reduced the space that one gets when buying a seat to the point that it's absurdly uncomfortable. Qantas is a much better airline.
Food
Boarding
Overall
Crew
Entertainment
Comfort
Reviews
Complete scam of an airline. They have reduced the space that one gets when buying a seat to the point that it's absurdly uncomfortable. Qantas is a much better airline.
Food
Boarding
Overall
Crew
Entertainment
Comfort
Reviews
Complete scam of an airline. They have reduced the space that one gets when buying a seat to the point that it's absurdly uncomfortable. Qantas is a much better airline.
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