Cheap Flights to St. Charles County from $19 (2026/2027)

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How Much Does it Cost To Fly To St. Charles County?

Prices found within past 7 days. Prices and availability subject to change. Additional terms may apply.

Fri, Nov 13 - Mon, Nov 16
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$53 Roundtrip, found 13 hours ago
$53
Roundtrip
found 13 hours ago
Select Frontier Airlines flight, departing Fri, Nov 13 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Mon, Nov 16, priced at $53 found 13 hours ago
Sat, Sep 26 - Wed, Sep 30
DEN
Denver Intl.
STL
Lambert-St. Louis Intl.
$80 Roundtrip, just found
$80
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Sep 26 from Denver Intl. to Lambert-St. Louis Intl., returning Wed, Sep 30, priced at $80 just found
Wed, Sep 30 - Sat, Oct 3
DEN
Denver Intl.
STL
Lambert-St. Louis Intl.
$97 Roundtrip, found 14 hours ago
$97
Roundtrip
found 14 hours ago
Select Frontier Airlines flight, departing Wed, Sep 30 from Denver Intl. to Lambert-St. Louis Intl., returning Sat, Oct 3, priced at $97 found 14 hours ago
Sat, Oct 10 - Sat, Oct 17
DEN
Denver Intl.
STL
Lambert-St. Louis Intl.
$103 Roundtrip, found 2 hours ago
$103
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Sat, Oct 10 from Denver Intl. to Lambert-St. Louis Intl., returning Sat, Oct 17, priced at $103 found 2 hours ago
Wed, Sep 23 - Sat, Oct 3
DEN
Denver Intl.
STL
Lambert-St. Louis Intl.
$103 Roundtrip, found 3 days ago
$103
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Wed, Sep 23 from Denver Intl. to Lambert-St. Louis Intl., returning Sat, Oct 3, priced at $103 found 3 days ago
Sat, Oct 24 - Mon, Nov 2
SEA
Seattle - Tacoma Intl.
STL
Lambert-St. Louis Intl.
$137 Roundtrip, found 12 hours ago
$137
Roundtrip
found 12 hours ago
Select Southwest Airlines flight, departing Sat, Oct 24 from Seattle - Tacoma Intl. to Lambert-St. Louis Intl., returning Mon, Nov 2, priced at $137 found 12 hours ago
Sat, Oct 24 - Mon, Nov 2
SEA
Seattle - Tacoma Intl.
STL
Lambert-St. Louis Intl.
$159 Roundtrip, found 12 hours ago
$159
Roundtrip
found 12 hours ago
Select American Airlines flight, departing Sat, Oct 24 from Seattle - Tacoma Intl. to Lambert-St. Louis Intl., returning Mon, Nov 2, priced at $159 found 12 hours ago
Thu, Oct 22 - Thu, Oct 29
MCO
Orlando Intl.
STL
Lambert-St. Louis Intl.
$176 Roundtrip, found 3 days ago
$176
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Thu, Oct 22 from Orlando Intl. to Lambert-St. Louis Intl., returning Thu, Oct 29, priced at $176 found 3 days ago
Sat, Oct 24 - Mon, Nov 2
SEA
Seattle - Tacoma Intl.
STL
Lambert-St. Louis Intl.
$177 Roundtrip, found 12 hours ago
$177
Roundtrip
found 12 hours ago
Select Delta flight, departing Sat, Oct 24 from Seattle - Tacoma Intl. to Lambert-St. Louis Intl., returning Mon, Nov 2, priced at $177 found 12 hours ago
OriginDestinationTravel DatesFlights From*
ATLSt. LouisNovember 13 to November 16$53
DENSt. LouisOctober 3 to October 17$80
SEASt. LouisOctober 24 to November 2$137
DFWSt. LouisNovember 12 to November 15$178
TPASt. LouisOctober 5 to October 12$211
LGASt. LouisSeptember 23 to September 25$222
LGASt. LouisSeptember 23 to September 25$222
PHLSt. LouisSeptember 25 to September 28$226
LAXSt. LouisOctober 31 to November 7$288
FCOSt. LouisSeptember 16 to September 20$874
*Prices include taxes and fees
OriginDestinationTravel DatesFlights From*
DFWSt. LouisSeptember 6 to September 10$235
PIEMascoutahSeptember 4 to September 11$262
TPASt. LouisSeptember 6 to September 20$265
DENSt. LouisSeptember 5 to September 15$275
PHLSt. LouisSeptember 6 to September 9$310
LGASt. LouisSeptember 6 to September 9$310
LGASt. LouisSeptember 6 to September 9$310
ATLSt. LouisSeptember 4 to September 6$324
SEASt. LouisSeptember 6 to September 21$360
LAXSt. LouisSeptember 6 to March 3$438
*Prices include taxes and fees

Best St. Charles County Flight and Hotel Packages

Price found within the past 48 hours. Click for updated prices.
The Wildwood Hotel
3.5-star property

The Wildwood Hotel

Oct 2 - Oct 4

2 night stay

Orange County (SNA) to St. Louis (STL)

United • Non-stop roundtrip • Coach
Price was $741, price is now $535 per person
$535
per person
found 1 day ago
Hermann Grain Bins BNB
2.0-star property

Hermann Grain Bins BNB

Sep 3 - Sep 7

4 night stay

Miami (MIA) to St. Louis (STL)

Frontier Airlines • Non-stop roundtrip • Coach
Save 100% on your flight
Price was $1,594, price is now $1,156 per person
$1,156
per person
found 1 day ago
Lodge Of Four Seasons Golf Resort, Marina & Spa
4.0-star property

Lodge Of Four Seasons Golf Resort, Marina & Spa

Sep 17 - Sep 21

4 night stay

Burbank (BUR) to St. Louis (STL)

Alaska Airlines • Non-stop roundtrip • Coach
Price was $911, price is now $735 per person
$735
per person
found 16 hours ago
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Travelers ❤️ These St. Charles County 🏨

Ameristar Casino Resort and Spa

Ameristar Casino Resort and Spa

4.5 out of 5
1 Ameristar Blvd St. Charles MO
Book a stay at this luxury hotel in St. Charles. Enjoy a full-service spa, 6 restaurants, and a casino. Our guests praise the clean rooms in our reviews. Popular attractions Ameristar Casino St. Charles and Hollywood Casino Amphitheatre are located nearby.
Opens in a new windowAmeristar Casino Resort and Spa
Clayton Plaza Hotel & Extended Stay

Clayton Plaza Hotel & Extended Stay

3.5 out of 5
7750 Carondelet Avenue St. Louis MO
Book a stay at this business-friendly hotel in St. Louis. Enjoy free breakfast, free WiFi, and a 24-hour fitness center. Our guests praise the breakfast and the pool in our reviews. Popular attractions St. Louis Zoo and Forest Park are located nearby.
9/10 Wonderful! (3,366 reviews)
"Multiple stays in the past"

Reviewed on Aug 31, 2026

Opens in a new windowClayton Plaza Hotel & Extended Stay
Hyatt Regency St. Louis at The Arch

Hyatt Regency St. Louis at The Arch

4 out of 5
315 Chestnut St St. Louis MO
Book a stay at this business-friendly hotel in St. Louis. Enjoy free WiFi, 3 restaurants, and 2 bars/lounges. Our guests praise the helpful staff and the clean rooms in our reviews. Popular attractions Gateway Arch and Busch Stadium are located nearby.
8.6/10 Excellent! (4,217 reviews)
"Clean room, great location for baseball games, arch, and other downtown visits. Valet parking feels a bit expensive for STL but their lot is secure and monitored 24/7."

Reviewed on Aug 31, 2026

Opens in a new windowHyatt Regency St. Louis at The Arch
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Renaissance St. Louis Airport Hotel

Renaissance St. Louis Airport Hotel

4 out of 5
9801 Natural Bridge Road St. Louis MO
Book a stay at this business-friendly hotel in St. Louis. Enjoy an outdoor pool, breakfast (surcharge), and a free airport shuttle. Our guests praise the helpful staff and the clean rooms in our reviews. Popular attractions Westport Plaza and Blanche M. Touhill Performing Arts Center are located nearby.
8.4/10 Very Good! (1,165 reviews)
"This place was very convenient considering my flight got in after midnight and it's so close to the airport. I only stayed over night and checked into another hotel in the city for the weekend. The rooms are old and need some updating (popcorn ceilings), but it was fine for a few hours of sleep and ..."

Reviewed on Aug 31, 2026

Opens in a new windowRenaissance St. Louis Airport Hotel
Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.

Frequently asked questions

How much is the cheapest flight to St. Charles County?
The next vacation you take doesn't have to make a huge dent in your budget. Within the last seven days, the cheapest return flight to St. Charles County cost $53. Find a cheap fare and spend the dollars you save on exciting experiences. This price was available on Travelocity for flights to St. Charles County departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly to St. Charles County?
Splurge more money on grand experiences and less on your airfare by going away to St. Charles County in November. This is the cheapest time to jet to this destination based on Travelocity's direct return flight demand from January to December last year. Browse through our selection of flights and enjoy a change of scenery without breaking the bank.
How can I check my flight status to St. Charles County?
Whether you'd like to check the status of your flight to St. Charles County or change your itinerary, you'll find all the necessary details on our handy portal, Trips. Click on "Trips" at the top of the Travelocity homepage, then log in or create a new account. Another handy way to manage all your bookings is with the Travelocity app. Get real-time flight status alerts and easily share details with any friends or family flying with you.
How do I find the best deals on flights to St. Charles County?
Being flexible with your dates is a great way to walk away with an amazing deal. Travelocity makes it a cinch to find your perfect fare through the "Flexible dates" function. First, search for your flight to St. Charles County, then compare the cheapest prices for surrounding days by clicking the Flexible dates box above. Booking ahead of schedule and avoiding vacation periods are other ways to save on fares. In the last seven days, the lowest price for a return flight to St. Charles County was $53 on our site. This price was available on Travelocity for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
Why should I book my flight to St. Charles County with Travelocity?
If you're hunting for cheap flights to St. Charles County, you'll come across some top deals with Travelocity. From cheap family flights with low-cost air carriers to flexible tickets, we've got it all. Experience a hassle-free trip with our round-the-clock customer assistance, Price Match Guarantee and free cancellations with most hotels and activities. Start planning your travel itinerary and get ready to hop on a plane to this vibrant destination.
What are the most popular flight routes to St. Charles County?
To help you find flights to St. Charles County, here's a list of some of the leading routes:

  • Chicago, IL (ORD-O'Hare Intl.) to Lambert-St. Louis Intl. Airport (STL) - 2,049 flights a month.
  • Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) to Lambert-St. Louis Intl. Airport (STL) - 1,503 flights a month.
  • Dallas, TX (DFW-Dallas-Fort Worth Intl.) to Lambert-St. Louis Intl. Airport (STL) - 1,300 flights a month.

How much is a flight to St. Charles County on average?
Airfares for roundtrip flights to St. Charles County were priced between $53 and $874 in the last seven days. As soon as you see an awesome deal, lock it in and get ready to take off on your next fun adventure with Travelocity. These prices were available on Travelocity for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
How long is the average flight to St. Charles County?
To get a feel for the average time of a direct flight to St. Charles County, browse through these popular routes:

  • Chicago, IL (ORD-O'Hare Intl.) to Lambert-St. Louis Intl. Airport (STL) - 1 hour and 23 minutes
  • Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) to Lambert-St. Louis Intl. Airport (STL) - 1 hour and 37 minutes
  • Dallas, TX (DFW-Dallas-Fort Worth Intl.) to Lambert-St. Louis Intl. Airport (STL) - 1 hour and 49 minutes

What can I expect on a flight to St. Charles County?
Factors such as which airline you're jetting off with and where your plane departs from will mostly determine what inclusions and services you can expect. Of course, you'll likely find a range of flights to St. Charles County, from cheap flights for family vacations to first class airfares. Hot meals, entertainment and games for the kids are usually what most airlines offer on long-haul flights.