$20 Cheap flights to St. Charles County

Earn rewards on top of your airline miles with Orbitz Rewards

Many airlines offer flexible change policies

Sign up to receive text alerts about your trip

Top places to visit in St. Charles County

A frozen lake with a sunset and a forest in the background.
FlightsFlights
FlightsFlights

Foristell

Foristell

Cheap flights to St. Charles County from $20 One Way, $39 Round Trip

$39 return flights and $20 one-way flights to St. Charles County were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Nov 4 - Wed, Nov 11
ATL
Atlanta
STL
St. Louis
$39 Roundtrip, found 1 day ago
$39
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Wed, Nov 4 from Atlanta to St. Louis, returning Wed, Nov 11, priced at $39 found 1 day ago
Fri, Nov 13 - Mon, Nov 16
DEN
Denver
STL
St. Louis
$44 Roundtrip, found 6 days ago
$44
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Fri, Nov 13 from Denver to St. Louis, returning Mon, Nov 16, priced at $44 found 6 days ago
Fri, Oct 16 - Mon, Oct 19
FLL
Fort Lauderdale
BLV
Belleville
$78 Roundtrip, found 2 days ago
$78
Roundtrip
found 2 days ago
Select Allegiant Air flight, departing Fri, Oct 16 from Fort Lauderdale to Belleville, returning Mon, Oct 19, priced at $78 found 2 days ago
Thu, Oct 22 - Mon, Oct 26
VPS
Fort Walton Beach
BLV
Belleville
$85 Roundtrip, found 1 day ago
$85
Roundtrip
found 1 day ago
Select Allegiant Air flight, departing Thu, Oct 22 from Fort Walton Beach to Belleville, returning Mon, Oct 26, priced at $85 found 1 day ago
Fri, Nov 13 - Mon, Nov 16
GUF
Gulf Shores
BLV
Belleville
$88 Roundtrip, found 22 hours ago
$88
Roundtrip
found 22 hours ago
Select Allegiant Air flight, departing Fri, Nov 13 from Gulf Shores to Belleville, returning Mon, Nov 16, priced at $88 found 22 hours ago
Sat, Oct 24 - Mon, Nov 2
MCO
Orlando
STL
St. Louis
$96 Roundtrip, found 4 days ago
$96
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Sat, Oct 24 from Orlando to St. Louis, returning Mon, Nov 2, priced at $96 found 4 days ago
Wed, Oct 21 - Wed, Oct 28
PIE
St. Petersburg
BLV
Belleville
$99 Roundtrip, found 3 days ago
$99
Roundtrip
found 3 days ago
Select Allegiant Air flight, departing Wed, Oct 21 from St. Petersburg to Belleville, returning Wed, Oct 28, priced at $99 found 3 days ago
Thu, Jan 28 - Sun, Jan 31
SRQ
Sarasota
BLV
Belleville
$100 Roundtrip, found 5 days ago
$100
Roundtrip
found 5 days ago
Select Allegiant Air flight, departing Thu, Jan 28 from Sarasota to Belleville, returning Sun, Jan 31, priced at $100 found 5 days ago
Fri, Oct 30 - Mon, Nov 2
DFW
Dallas
STL
St. Louis
$107 Roundtrip, found 3 days ago
$107
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Fri, Oct 30 from Dallas to St. Louis, returning Mon, Nov 2, priced at $107 found 3 days ago
Sat, Oct 10 - Sat, Oct 17
SFB
Orlando
BLV
Belleville
$117 Roundtrip, found 5 days ago
$117
Roundtrip
found 5 days ago
Select Allegiant Air flight, departing Sat, Oct 10 from Orlando to Belleville, returning Sat, Oct 17, priced at $117 found 5 days ago
Sat, Oct 3 - Tue, Oct 6
ATL
Atlanta
STL
St. Louis
$119 Roundtrip, found 6 days ago
$119
Roundtrip
found 6 days ago
Select Delta flight, departing Sat, Oct 3 from Atlanta to St. Louis, returning Tue, Oct 6, priced at $119 found 6 days ago
Sat, Oct 31 - Sun, Nov 1
ATL
Atlanta
STL
St. Louis
$125 Roundtrip, found 1 day ago
$125
Roundtrip
found 1 day ago
Select Southwest Airlines flight, departing Sat, Oct 31 from Atlanta to St. Louis, returning Sun, Nov 1, priced at $125 found 1 day ago

Deals For This Weekend's Flights

OriginDestinationTravel DatesFlights From*
DENSt. LouisSeptember 20 to September 21$410
SEASt. LouisSeptember 19 to September 21$434
LAXSt. LouisSeptember 20 to September 23$457
JFKSt. LouisSeptember 19 to September 26$493
DFWSt. LouisSeptember 20 to September 23$518
LGASt. LouisSeptember 20 to September 22$521
PHLSt. LouisSeptember 19 to September 20$525
ATLSt. LouisSeptember 20 to September 20$542
TPASt. LouisSeptember 19 to September 21$1,236
*Prices include taxes and fees

Find The Perfect Hotel For After Your Flight

Score Epic St. Charles County Accommodation Deals

Ameristar Casino Resort and Spa

Ameristar Casino Resort and Spa

4.5 out of 5
1 Ameristar Blvd St. Charles MO
Fully refundableReserve now, pay when you stay
$179 nightly
The price is $210 total per night from Oct 12 to Oct 13
$210 total
Oct 12 - Oct 13
Total with taxes and fees
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 ...
8.6/10 Excellent! (1,054 reviews)
"We only spent one night but the room was gorgeous the checking was easy and the employees were great. The food at the restaurants were also good and of course we did enjoy our time at the casino"

Reviewed on Sep 15, 2026

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
Fully refundableReserve now, pay when you stay
$94 nightly
The price is $110 total per night from Oct 4 to Oct 5
$110 total
Oct 4 - Oct 5
Total with taxes and fees
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 ...
9/10 Wonderful! (3,399 reviews)
"The property was central and breakfast was good. It was clean and the rooms were spacious. Parking wasn’t great but it was free"

Reviewed on Sep 17, 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
Fully refundableReserve now, pay when you stay
$152 nightly
The price is $179 total per night from Oct 1 to Oct 2
$179 total
Oct 1 - Oct 2
Total with taxes and fees
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 ...
8.6/10 Excellent! (4,278 reviews)
"The hotel was amazing. My husband and I was upgraded to a suite for our 16th wedding anniversary"

Reviewed on Sep 17, 2026

Opens in a new windowHyatt Regency St. Louis at The Arch
Save an average of 15% on thousands of hotels when you're signed in
Sign in
Sign up, it's free
Pear Tree Inn St. Louis Airport

Pear Tree Inn St. Louis Airport

2.5 out of 5
10810 Pear Tree Ln St. Ann MO
Fully refundableReserve now, pay when you stay
$90 nightly
The price is $106 total per night from Sep 22 to Sep 23
$106 total
Sep 22 - Sep 23
Total with taxes and fees
Book a stay at this business-friendly hotel in St. Ann. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the breakfast and the helpful staff ...
9.2/10 Wonderful! (3,240 reviews)
"Amazing experience overall"

Reviewed on Sep 17, 2026

Opens in a new windowPear Tree Inn St. Louis Airport
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.

Need a Car For After Your Flight?

Compact

Nissan Versa Note
  • 5 people
  • Unlimited mileage
Saint Louis, Missouri, USA
Nissan Versa Note

$114

$293 total
found 2 days ago
Compact Nissan Versa Note

Economy

Chevrolet Spark
  • 4 people
  • Unlimited mileage
Saint Louis, Missouri, USA
Chevrolet Spark

$114

$293 total
found 2 days ago
Economy Chevrolet Spark

Midsize

Toyota Corolla
  • 5 people
  • Unlimited mileage
Saint Louis, Missouri, USA
Toyota Corolla

$120

$306 total
found 2 days ago
Midsize Toyota Corolla

Special

Managers Special
  • 4 people
  • Unlimited mileage
Saint Louis, Missouri, USA
Managers Special

$122

$312 total
found 2 days ago
Special Managers Special
Lowest prices found within the past 2 days. Prices and availability subject to change. Additional terms may apply.

St. Charles County

Why search for low cost fares on your flights to St. Charles County when Orbitz offers the guaranteed lowest prices on foreign and domestic flights? When you travel with Orbitz you can benefit from:

Bargain Flights to St. Charles County

Orbitz offers massive discounts and substantial last-minute savings on your St. Charles County flights. Orbitz ensures that you can find, plan and reserve your flights any destination with ease, all while enjoying the guaranteed lowest prices available anywhere.

Cutting-Edge Mobile Tools to Keep You In The Know

Orbitz sends you free alerts and updates on your St. Charles County flight wherever you are in the world. Once you have downloaded the free app for your iPhone, Android, or iPad, you can review or alter any travel plans that you have made or even book a future flight for business or pleasure. If you need to reserve a hotel room when booking your flight, you will find exclusive deals on our mobile site.

Frequent Flyer Program Enrolment

Orbitz finds you the lowest fares, but you can still add your miles to your frequent flyer program to earn miles or points on selected flights to St. Charles County. When making your booking, reference your frequent flyer number to receive discounts in the future.

Outstanding Customer Service

Orbitz values your business and wants to ensure that all of your flights are as easy as possible to book. If you have booked a flight to St. Charles County but need to cancel it, you may be able to do so online. If you have any questions or need help, the dedicated Orbitz customer service team is always standing by.

Frequently asked questions

Which airlines fly to St. Charles County?
Lock in a ticket with one of the 24 airlines that fly to Lambert-St. Louis Intl. Airport (STL) and get set to embark on exciting new adventures. This popular airport is the main entry point for St. Charles County. When it's time to discover the region, these reputable carriers will take you there:

  • Air Canada - 35 flights to St. Charles County per month
  • Frontier Airlines - 17 flights to St. Charles County per month
  • Lufthansa - 3 flights to St. Charles County per month

What is the best airport to fly to in St. Charles County?
Fly into Lambert-St. Louis Intl. Airport (STL), the main entry point to St. Charles County. Organizing your flight to this region doesn't get much easier than that.
How much is a flight to St. Charles County?
Prices for round-trip flights dropped as low as $39 this week to St. Charles County, and rose to a high of $1,236. Some lucky travelers journeying out of Atlanta (ATL) managed to secure one-way fares starting at just $20.
How to book the cheapest flight to St. Charles County?
With Orbitz, you'll find some of the most affordable flight deals around from a wide selection of airlines. But if you want to heighten your chances of nabbing cheap flights to St. Charles County, here are a few tips to bear in mind:

  • Consider other airports to cut costs. Enter your preferred departure and arrival points in the form fields, then select the 'Nearby airports' function below. It will list the available options.
  • Similarly, click on the 'Show flexible dates' option to see the prices for days around your chosen departure. You may be able to find cheaper flight deals if your travel plans are flexible.
  • You can also use the 'Show options' link to filter results for your preferred carrier, seating class, nonstop flights and refundable flights. Under 'Sort & Filter' to the left, you can even pick the time of day you want to fly.
  • Lock in your airfare as soon as you've decided on your travel dates. While you can get lucky now and then, tickets rarely drop in price as your date of departure gets closer.
  • Consider combining your hotels, flights and car rental into one convenient package deal to make your dollar go further.
  • If it's an option, avoid traveling during the busy season. Airfares often surge during school breaks, summer and other vacation periods like Easter, Thanksgiving and Christmas.

How long is a flight to St. Charles County?
You might have time to read a few chapters of your novel, or you might make it though the entire thing! How long a flight is depends on where you're taking off from, but these top routes to St. Charles County will give you some insight:

  • New York, NY (LGA-LaGuardia) to Lambert-St. Louis Intl. Airport (STL) - 2 hours and 28 minutes
  • Atlanta, GA (ATL-Hartsfield-Jackson Atlanta Intl.) to Lambert-St. Louis Intl. Airport (STL) - 1 hour and 41 minutes
  • Chicago, IL (ORD-O'Hare Intl.) to Lambert-St. Louis Intl. Airport (STL) - 1 hour and 27 minutes

What is the best time to book a flight to St. Charles County?
On average, the cheapest month to book your journey is January. This is followed by February then August. When looking for a cheap flight to St. Charles County, be ready to book. Cheap deals pop up suddenly and don't stick around!
What day of the week is the cheapest to book a flight to St. Charles County?
If you're after low-cost fares to St. Charles County, the best days of the week to book are Tuesdays, Wednesdays and Saturdays. With Orbitz (and some good timing!), an unbeatable flight deal will be all yours.
What is the cheapest day of the week to fly to St. Charles County?
You can grab cheap flights to St. Charles County by taking off on a Monday, according to Orbitz data from 2020. Tuesday is the next cheapest day, while Saturday has the most costly ticket prices. Whether you prefer to save a bundle or fly out on whichever day is convenient, you'll always get a terrific deal with Orbitz.
What is the cheapest month to fly to St. Charles County?
According to Orbitz data, you should fly out in August. This is generally an excellent month to pick up cheap flights to St. Charles County. Keep in mind that the most expensive time to depart is in June.
Which airlines allow free cancellation?
Orbitz makes it a piece of cake to find carriers offering fare flexibility. Simply click on "Filter by flexible change policies" when searching for your flights and voila! You'll see options that include free cancellation within 24 hours of booking, no change fees and of course, the very best price.
What do I need for the flight to St. Charles County?
Nothing's more enjoyable than jetting to a new place, but it's wise to be prepared. The following top tips will help get your trip off to a smooth start:

  • Your travel documents are the most important things you'll need to take with you on your flight to St. Charles County. To avoid any problems while checking in, make sure that the name on your ticket matches your government-issued ID.
  • To keep you amused on your short trip to St. Charles County, download some new music or restock the audiobook library on your smartphone. Food can also be a delicious distraction while in the air, so pack some snacks.
  • Even if you're flying when it's blistering hot, carry a cardigan or sweater on board with you. Cabins are notorious for getting a bit chilly!

How many direct flights are there to St. Charles County?
You can lock in a seat on one of 482 flights that travel direct to St. Charles County each month. Southwest Airlines, American Airlines and Delta Air Lines are just a couple of the airlines that will get you there comfortably in one go. United Airlines, Cape Air and Frontier Airlines also fly nonstop.
How do I get cheap first-class/business deals to St. Charles County?
Savvy travelers have a talent for finding first or business-class airfares to St. Charles County that don't cost a packet. Be like them with these handy hints:

  • Being flexible isn't just useful in the gym. Avoid locking in your travel dates so you can snap up more affordable airfares when a sale comes along.
  • Search for a low-cost airline that offers seats in business class. They usually come with more legroom and a glass of Champagne — but without the high price.
  • Make a bid for an upgrade. Some carriers hold online auctions that let you offer a price for a seat up the front. You can also try upgrading with points earned through a loyalty program.

What is the best time to go to St. Charles County?
St. Charles County is a popular place in March, April and May. If you plan to head there during these months, it would be a good idea to book ahead of time to ensure you get the best deals. Like to know what the summer's like in St. Charles County? Average daily temperatures normally sit between 70 ºF and 85 ºF. Like many destinations in the Northern Hemisphere, the summer season commences June 20 here.

Fare, taxes & fees: Fares include all taxes and fees, except baggage fees. Rates shown reflect fares found by other Orbitz users over the past 7 days. Due to rapidly changing airline prices & seat availability, these fares may no longer be available.

Refunds/changes/cancellations: Itinerary changes, if permitted for the fare, will have a $30 service fee charged by Orbitz. Additional airline charges may apply.

Other conditions: Schedules, fares and rules are subject to change without notice. Seats are limited and may not be available on all flights/dates or in all markets. Lower fares may be available. Fares will not be honored retroactively or in exchange for any wholly/partially unused ticket. Tickets are non-transferable and non-refundable. Fare rules are provided for the selected itinerary before booking.