A bridge over a calm river with a sunset sky.

Flight Destinations in St. Charles County

View ฿21,730 flight on Mon, 7 Sept 2026Opens in a new window

Popular airlines to St. Charles County

  • American Airlines

  • Delta

  • United

  • Southwest Airlines

  • Alaska Airlines

  • Frontier 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 ฿21,730 for one-way flights and ฿38,055 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Mon, 7 Sept - Mon, 14 Sept
HKG
Hong Kong SAR
STL
St. Louis
฿38,055 Return, found 1 day ago
฿38,055
Return
found 1 day ago
Select Delta flight, departing Mon, 7 Sept from Hong Kong SAR to St. Louis, returning Mon, 14 Sept, priced at ฿38,055 found 1 day ago
Delta
Mon, 7 Sept - Mon, 14 Sept
HKG
Hong Kong SAR
STL
St. Louis
฿38,275 Return, found 1 day ago
฿38,275
Return
found 1 day ago
Select Delta flight, departing Mon, 7 Sept from Hong Kong SAR to St. Louis, returning Mon, 14 Sept, priced at ฿38,275 found 1 day ago
EVA Airways
Mon, 7 Sept - Mon, 14 Sept
HKG
Hong Kong SAR
STL
St. Louis
฿41,345 Return, found 1 day ago
฿41,345
Return
found 1 day ago
Select EVA Airways flight, departing Mon, 7 Sept from Hong Kong SAR to St. Louis, returning Mon, 14 Sept, priced at ฿41,345 found 1 day ago
Asiana Airlines
Mon, 7 Sept - Mon, 14 Sept
HKG
Hong Kong SAR
STL
St. Louis
฿41,475 Return, found 1 day ago
฿41,475
Return
found 1 day ago
Select Asiana Airlines flight, departing Mon, 7 Sept from Hong Kong SAR to St. Louis, returning Mon, 14 Sept, priced at ฿41,475 found 1 day ago
Asiana Airlines
Mon, 7 Sept - Mon, 14 Sept
HKG
Hong Kong SAR
STL
St. Louis
฿41,695 Return, found 1 day ago
฿41,695
Return
found 1 day ago
Select Asiana Airlines flight, departing Mon, 7 Sept from Hong Kong SAR to St. Louis, returning Mon, 14 Sept, priced at ฿41,695 found 1 day ago
EVA Airways
Mon, 7 Sept - Mon, 14 Sept
HKG
Hong Kong SAR
STL
St. Louis
฿44,210 Return, found 1 day ago
฿44,210
Return
found 1 day ago
Select EVA Airways flight, departing Mon, 7 Sept from Hong Kong SAR to St. Louis, returning Mon, 14 Sept, priced at ฿44,210 found 1 day ago
China Airlines
Mon, 7 Sept - Mon, 14 Sept
HKG
Hong Kong SAR
STL
St. Louis
฿45,020 Return, found 1 day ago
฿45,020
Return
found 1 day ago
Select China Airlines flight, departing Mon, 7 Sept from Hong Kong SAR to St. Louis, returning Mon, 14 Sept, priced at ฿45,020 found 1 day ago
Delta
Mon, 7 Sept - Mon, 14 Sept
HKG
Hong Kong SAR
STL
St. Louis
฿47,405 Return, found 1 day ago
฿47,405
Return
found 1 day ago
Select Delta flight, departing Mon, 7 Sept from Hong Kong SAR to St. Louis, returning Mon, 14 Sept, priced at ฿47,405 found 1 day ago
Delta
Mon, 7 Sept - Mon, 14 Sept
HKG
Hong Kong SAR
STL
St. Louis
฿49,115 Return, found 1 day ago
฿49,115
Return
found 1 day ago
Select Delta flight, departing Mon, 7 Sept from Hong Kong SAR to St. Louis, returning Mon, 14 Sept, priced at ฿49,115 found 1 day ago
Korean Air
Mon, 7 Sept - Mon, 14 Sept
HKG
Hong Kong SAR
STL
St. Louis
฿49,855 Return, found 1 day ago
฿49,855
Return
found 1 day ago
Select Korean Air flight, departing Mon, 7 Sept from Hong Kong SAR to St. Louis, returning Mon, 14 Sept, priced at ฿49,855 found 1 day 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, ฿38,055 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 Hong Kong SAR (HKG) sold for as low as ฿21,730 in the last seven days. During this time, the price of a return airfare to St. Charles County varied between ฿38,055 and ฿49,855. 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.
How much is a plane ticket to St. Charles County?
In the last seven days, plane tickets to St. Charles County fluctuated from ฿38,055 to ฿49,855.
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

About St. Charles County

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.
About St. Charles County
*Available to Expedia members.