Flight to St. Charles County

View S$859 flight on Wed, 11 Mar, 2026Opens in a new window

Popular airlines to St. Charles County

  • American Airlines

  • Delta

  • United

  • Southwest Airlines

  • Frontier Airlines

  • Alaska Airlines

  • Air Canada

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 40% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap round-trip flights to St. Charles County

Prices were available within the past 7 days and start at S$859 for one-way flights and S$1,416 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

EVA Airways
Wed, 11 Mar - Wed, 15 Jul
SIN
Singapore
STL
St. Louis
S$1,416 Return, found 5 days ago
S$1,416
Return
found 5 days ago
Select EVA Airways flight, departing Wed, 11 Mar from Singapore to St. Louis, returning Wed, 15 Jul, priced at S$1,416 found 5 days ago
EVA Airways
Thu, 1 Oct - Mon, 30 Nov
SIN
Singapore
STL
St. Louis
S$1,455 Return, found 3 days ago
S$1,455
Return
found 3 days ago
Select EVA Airways flight, departing Thu, 1 Oct from Singapore to St. Louis, returning Mon, 30 Nov, priced at S$1,455 found 3 days ago
China Airlines
Thu, 1 Oct - Mon, 30 Nov
SIN
Singapore
STL
St. Louis
S$1,463 Return, found 3 days ago
S$1,463
Return
found 3 days ago
Select China Airlines flight, departing Thu, 1 Oct from Singapore to St. Louis, returning Mon, 30 Nov, priced at S$1,463 found 3 days ago
EVA Airways
Sat, 16 May - Sat, 30 May
SIN
Singapore
STL
St. Louis
S$1,480 Return, found 2 days ago
S$1,480
Return
found 2 days ago
Select EVA Airways flight, departing Sat, 16 May from Singapore to St. Louis, returning Sat, 30 May, priced at S$1,480 found 2 days ago
Qatar Airways
Thu, 23 Apr - Tue, 28 Apr
SIN
Singapore
STL
St. Louis
S$1,631 Return, found 2 days ago
S$1,631
Return
found 2 days ago
Select Qatar Airways flight, departing Thu, 23 Apr from Singapore to St. Louis, returning Tue, 28 Apr, priced at S$1,631 found 2 days ago
Japan Airlines
Wed, 11 Mar - Wed, 15 Jul
SIN
Singapore
STL
St. Louis
S$1,701 Return, found 5 days ago
S$1,701
Return
found 5 days ago
Select Japan Airlines flight, departing Wed, 11 Mar from Singapore to St. Louis, returning Wed, 15 Jul, priced at S$1,701 found 5 days ago
Cathay Pacific
Tue, 14 Apr - Sun, 26 Apr
SIN
Singapore
STL
St. Louis
S$1,783 Return, found 4 days ago
S$1,783
Return
found 4 days ago
Select Cathay Pacific flight, departing Tue, 14 Apr from Singapore to St. Louis, returning Sun, 26 Apr, priced at S$1,783 found 4 days ago
American Airlines
Thu, 1 Oct - Mon, 30 Nov
SIN
Singapore
STL
St. Louis
S$1,802 Return, found 3 days ago
S$1,802
Return
found 3 days ago
Select American Airlines flight, departing Thu, 1 Oct from Singapore to St. Louis, returning Mon, 30 Nov, priced at S$1,802 found 3 days ago
Air Canada
Sat, 25 Apr - Tue, 28 Apr
SIN
Singapore
STL
St. Louis
S$1,962 Return, found 2 days ago
S$1,962
Return
found 2 days ago
Select Air Canada flight, departing Sat, 25 Apr from Singapore to St. Louis, returning Tue, 28 Apr, priced at S$1,962 found 2 days ago
United
Wed, 22 Apr - Tue, 28 Apr
SIN
Singapore
STL
St. Louis
S$2,024 Return, found 1 day ago
S$2,024
Return
found 1 day ago
Select United flight, departing Wed, 22 Apr from Singapore to St. Louis, returning Tue, 28 Apr, priced at S$2,024 found 1 day ago

The Annual Holiday Sale

Members save up to 40% on hotels. Plan this year’s big trip and save.
Book now

Trending flights to St. Charles County

These prices were available within the past 7 days. Prices quoted are per person, return, for the period specified. Prices and availability are subject to change. Additional terms apply.

EVA Airways
Wed, 11 Mar - Wed, 15 Jul
SIN
Singapore
STL
St. Louis
S$1,416 Return, found 5 days ago
S$1,416
Return
found 5 days ago
Select EVA Airways flight, departing Wed, 11 Mar from Singapore to St. Louis, returning Wed, 15 Jul, priced at S$1,416 found 5 days ago

Frequently asked questions

How do I find cheap flights to St. Charles County that have flexible change policies?
We understand that things can change from one minute to the next, so booking a flexible ticket with Expedia is always a clever idea. Simply mark the "No change fee" box directly below the "Flexible change policies" filter. Your low-priced, flexible flight to St. Charles County is just a few clicks away.
Which airlines fly to St. Charles County?
When you're ready to reserve your seat to or near St. Charles County, these well-known carriers are waiting to welcome you on board:

  • Southwest Airlines - 2,214 flights to or near St. Charles County each month, including 2,214 flights to Lambert-St. Louis Intl. Airport (STL) per month.
  • American Airlines - 789 flights to or near St. Charles County each month, including 789 flights to Lambert-St. Louis Intl. Airport (STL) per month.
  • Delta Air Lines - 650 flights to or near St. Charles County each month, including 650 flights to Lambert-St. Louis Intl. Airport (STL) per month.

How can I find cheap tickets to St. Charles County?
An excellent strategy for walking away with cheap fares is to be flexible with your travel dates. Start by searching for your flight to St. Charles County, then click on the "flexible dates" link for a list of prices for nearby days. Want another tip? Book well ahead of time. To give you an idea of costs, S$1,416 was the lowest price for a flight to St. Charles County in the last seven days.
How much is a flight to St. Charles County?
One-way flights taking off from Singapore (SIN) sold for as low as S$859 in the last seven days. During this time, the price of a return airfare to St. Charles County varied between S$1,416 and S$2,024. If you find a deal, book as fast as you can — these fares don't stick around for long.
What are the most popular airports to fly into in St. Charles County?
Get ready to pack your bags and jet into Lambert-St. Louis Intl. Airport (STL), St. Charles County's leading flight hub. Lock in a seat on one of the 4,902 flights that land at this popular destination each month.
When is the cheapest time to fly to St. Charles County?
Fly out on a Tuesday to raise your chances of bagging the cheapest deal to St. Charles County. Mondays are usually the second most affordable day to take off. Saturday is typically the most expensive day to fly anywhere.
How much is a plane ticket to St. Charles County?
In the last seven days, plane tickets to St. Charles County fluctuated from S$1,416 to S$2,024.
What is the best time to go to St. Charles County?
Foristell, St. Charles County's most prominent city, is a terrific destination to explore at anytime. Not a big fan of chilly weather? Then journey here from June 20 onward during the summer months, when average temperatures vary from 18ºC to 29ºC. March, April and May is when Foristell is really buzzing.
What months are the cheapest to book a flight to St. Charles County?
A cheap month to score a fantastic deal to St. Charles County is February, whereas prices are at their highest in December. Keep clear of this month if you're on a tight budget.

Book with confidence

Expedia offers flights to St. Charles County to meet every traveller's needs. Whatever your flight need - Expedia has the flight for you. So choose from flights to St. Charles County or destinations around the world and discover how easy it is to make your flight reservations on Expedia.

Travel information

St. Charles County Flights Information

Airlines serving
EVA Airways, Qatar Airways, Cathay Pacific, Air Canada, Turkish Airlines, Lufthansa, Japan Airlines, Air India, China Airlines, American Airlines, United
Roundtrip price
from S$1,416
St. Charles County Flights Information

Explore a world of travel with Expedia

*Available to Expedia members.