$28 Cheap Flights to Charleston, IL

View $28 flight on Wed, Jun 17, 2026Opens in a new window

Popular airlines to Charleston

How much is the cheapest flight to Charleston?

Prices were available within the past 7 days and start at $28 for one-way flights and $56 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Wed, Jun 17 - Tue, Jun 23
DEN
Denver
STL
St. Louis
$56 Roundtrip, found 7 hours ago
$56
Roundtrip
found 7 hours ago
Select Frontier Airlines flight, departing Wed, Jun 17 from Denver to St. Louis, returning Tue, Jun 23, priced at $56 found 7 hours ago
United
Tue, Jun 30 - Wed, Jul 1
DEN
Denver
STL
St. Louis
$201 Roundtrip, found 1 hour ago
$201
Roundtrip
found 1 hour ago
Select United flight, departing Tue, Jun 30 from Denver to St. Louis, returning Wed, Jul 1, priced at $201 found 1 hour ago
Southwest Airlines
Tue, Jun 30 - Wed, Jul 1
DEN
Denver
STL
St. Louis
$201 Roundtrip, found 1 hour ago
$201
Roundtrip
found 1 hour ago
Select Southwest Airlines flight, departing Tue, Jun 30 from Denver to St. Louis, returning Wed, Jul 1, priced at $201 found 1 hour ago
Delta
Tue, Jun 30 - Wed, Jul 1
DEN
Denver
STL
St. Louis
$221 Roundtrip, found 1 hour ago
$221
Roundtrip
found 1 hour ago
Select Delta flight, departing Tue, Jun 30 from Denver to St. Louis, returning Wed, Jul 1, priced at $221 found 1 hour ago
American Airlines
Sat, Sep 5 - Sat, Sep 12
SEA
Seattle
STL
St. Louis
$249 Roundtrip, found 8 hours ago
$249
Roundtrip
found 8 hours ago
Select American Airlines flight, departing Sat, Sep 5 from Seattle to St. Louis, returning Sat, Sep 12, priced at $249 found 8 hours ago

Frequently asked questions

What month is the cheapest to fly to Charleston?
June is the cheapest month to travel to Charleston. Demand is lower then, so fares are generally more affordable. Organizing your trip outside of public holidays and school breaks can also help you save.
Which US cities have the cheapest flights to Charleston?
Typically, Chicago, Dallas and Denver offer cheap flights to Charleston. However, being flexible is the secret to getting the lowest fares. Head off during the off-peak season or midweek to keep costs to a minimum.
Which US cities fly direct to Charleston?
There are 55 US destinations that you can fly to Charleston directly from. Explore the options by selecting the "Direct flights only" box on Expedia and choose the best departure point for you. Here are several of the major cities to leave from:

  • Chicago
  • Dallas
  • Denver
  • New York
  • Atlanta

How to find a cheap flight to Charleston?
Book early or look for a cheap flight to Charleston during the low season, such as December and January. Leaving on a Thursday can also save you 16% on average compared to a Sunday flight.* The Expedia app makes it even easier to know when to book. Just activate the toggle for "Watch prices" and get notified as soon as fares drop.*Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.
How to get a cheap last-minute flight to Charleston?
You can find cheap deals on last-minute flights to Charleston, especially if your travel arrangements aren't set in stone. Think about flying from a different hub, tweaking your trip dates or choosing an alternative airline to get a cheap flight to Charleston.
How far in advance should I book a flight to Charleston?
To nab some of the biggest savings on domestic journeys, book your flight to Charleston 28 days ahead of your travel dates. For international flights, search for your ticket between two and four months in advance. This improves your chances of securing the departure dates and times you want.**Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.
Which day of the week is the cheapest day to buy a plane ticket to Charleston?
You'll save an average of 8% if you buy tickets on a Sunday instead of Fridays, which tend to be the most expensive day to book.* When it comes to scoring a cheap flight to Charleston, timing makes a difference.*Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.
Which airlines fly to Charleston?
Heading to Charleston is as simple as deciding between two popular airlines. Book your fare with either of these options:

  • American Airlines - 1,083 flights to Charleston each month, including 927 flights to Lambert-St. Louis Intl. Airport (STL) per month.
  • Delta Air Lines - 637 flights to Charleston each month, including 637 flights to Lambert-St. Louis Intl. Airport (STL) per month.

Where do you fly into Charleston?
The main airport when you fly to Charleston is University Of Illinois Urbana-Champaign Williard Airport (CMI), but there are other nearby choices like Decatur Airport (DEC) and Mattoon, IL (MTO-Coles County Memorial). You can also land at Terre Haute, IN (HUF-Terre Haute Intl. - Hulman Field) and Danville, IL (DNV-Vermilion County) when flying to Charleston.
How far is the airport from central Charleston?
If you're arriving at University Of Illinois Urbana-Champaign Williard Airport (CMI), you'll be around 40 mi north of central Charleston.
Can I save money by booking a Charleston trip package?
Bundle your hotel and flight and you could save hundreds of dollars. Better yet, you can add extras like tours and car rentals to your Charleston flight and hotel package deal. With Expedia, it's a breeze to look after all your Charleston travel plans in one place.
Can I change or cancel my flight to Charleston?
If you bought your flight to Charleston within the last 24 hours, you can typically change or cancel it for free. After that, additional costs may apply depending on the airline's terms and conditions. For more information, visit our Customer Service Portal. Bear in mind that some flights are non-refundable, so you may be issued a credit toward future travel instead of a direct refund. When searching on Expedia, use the "No cancel fee" or "Changes included" boxes to compare fares with flexible change policies.

*Flight schedules are subject to change.

*Available to One Key members.

 

Travel information

Destination airport
Lambert-St. Louis Intl.
Destination airport IATA code
STL
Destination city name
St. Louis
Roundtrip price
$68

Trending flights to Charleston

Prices were available within the past 7 days and start at $28 for one-way flights and $56 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Wed, Jun 17 - Tue, Jun 23
DEN
Denver
STL
St. Louis
$56 Roundtrip, found 7 hours ago
$56
Roundtrip
found 7 hours ago
Select Frontier Airlines flight, departing Wed, Jun 17 from Denver to St. Louis, returning Tue, Jun 23, priced at $56 found 7 hours ago

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