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Southern Illinois

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Southern Illinois Flights as Low as $118

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

Frontier Airlines
Mon, Jan 6 - Sat, Jan 11
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$118 Roundtrip, found 17 hours ago
$118
Roundtrip
found 17 hours ago
Select Frontier Airlines flight, departing Mon, Jan 6 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Sat, Jan 11, priced at $118 found 17 hours ago
Frontier Airlines
Tue, Jan 14 - Tue, Jan 21
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$163 Roundtrip, found 6 hours ago
$163
Roundtrip
found 6 hours ago
Select Frontier Airlines flight, departing Tue, Jan 14 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Tue, Jan 21, priced at $163 found 6 hours ago
Frontier Airlines
Mon, Jan 6 - Thu, Jan 9
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$177 Roundtrip, found 17 hours ago
$177
Roundtrip
found 17 hours ago
Select Frontier Airlines flight, departing Mon, Jan 6 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Thu, Jan 9, priced at $177 found 17 hours ago
Frontier Airlines
Mon, Jan 6 - Thu, Jan 9
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$183 Roundtrip, found 17 hours ago
$183
Roundtrip
found 17 hours ago
Select Frontier Airlines flight, departing Mon, Jan 6 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Thu, Jan 9, priced at $183 found 17 hours ago
Frontier Airlines
Thu, Jan 2 - Tue, Jan 7
CLE
Hopkins Intl.
STL
Lambert-St. Louis Intl.
$188 Roundtrip, found 1 day ago
$188
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Thu, Jan 2 from Hopkins Intl. to Lambert-St. Louis Intl., returning Tue, Jan 7, priced at $188 found 1 day ago
Frontier Airlines
Wed, Jan 8 - Sat, Jan 11
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$188 Roundtrip, found 17 hours ago
$188
Roundtrip
found 17 hours ago
Select Frontier Airlines flight, departing Wed, Jan 8 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Sat, Jan 11, priced at $188 found 17 hours ago
United
Tue, Jan 14 - Tue, Jan 21
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$196 Roundtrip, found 6 hours ago
$196
Roundtrip
found 6 hours ago
Select United flight, departing Tue, Jan 14 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Tue, Jan 21, priced at $196 found 6 hours ago
Frontier Airlines
Wed, Dec 25 - Tue, Jan 7
CLE
Hopkins Intl.
STL
Lambert-St. Louis Intl.
$218 Roundtrip, found 1 day ago
$218
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Wed, Dec 25 from Hopkins Intl. to Lambert-St. Louis Intl., returning Tue, Jan 7, priced at $218 found 1 day ago
American Airlines
Tue, Jan 14 - Tue, Jan 21
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$239 Roundtrip, found 6 hours ago
$239
Roundtrip
found 6 hours ago
Select American Airlines flight, departing Tue, Jan 14 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Tue, Jan 21, priced at $239 found 6 hours ago
American Airlines
Tue, Jan 14 - Tue, Jan 21
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$240 Roundtrip, found 6 hours ago
$240
Roundtrip
found 6 hours ago
Select American Airlines flight, departing Tue, Jan 14 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Tue, Jan 21, priced at $240 found 6 hours ago
American Airlines
Tue, Jan 14 - Tue, Jan 21
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$246 Roundtrip, found 6 hours ago
$246
Roundtrip
found 6 hours ago
Select American Airlines flight, departing Tue, Jan 14 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Tue, Jan 21, priced at $246 found 6 hours ago
Frontier Airlines
Sat, Jan 4 - Sat, Jan 11
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$248 Roundtrip, found 17 hours ago
$248
Roundtrip
found 17 hours ago
Select Frontier Airlines flight, departing Sat, Jan 4 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Sat, Jan 11, priced at $248 found 17 hours ago
American Airlines
Tue, Jan 14 - Tue, Jan 21
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$263 Roundtrip, found 6 hours ago
$263
Roundtrip
found 6 hours ago
Select American Airlines flight, departing Tue, Jan 14 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Tue, Jan 21, priced at $263 found 6 hours ago
Delta
Tue, Jan 7 - Sun, Jan 12
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$263 Roundtrip, found 17 hours ago
$263
Roundtrip
found 17 hours ago
Select Delta flight, departing Tue, Jan 7 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Sun, Jan 12, priced at $263 found 17 hours ago
Spirit Airlines
Sun, Jan 5 - Tue, Jan 7
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$275 Roundtrip, found 17 hours ago
$275
Roundtrip
found 17 hours ago
Select Spirit Airlines flight, departing Sun, Jan 5 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Tue, Jan 7, priced at $275 found 17 hours ago
Delta
Tue, Dec 31 - Wed, Jan 8
ABQ
Albuquerque Intl. Sunport
STL
Lambert-St. Louis Intl.
$301 Roundtrip, found 9 hours ago
$301
Roundtrip
found 9 hours ago
Select Delta flight, departing Tue, Dec 31 from Albuquerque Intl. Sunport to Lambert-St. Louis Intl., returning Wed, Jan 8, priced at $301 found 9 hours ago

Cheap Flights to Southern Illinois

Fall in love at first flight with your vacation to Southern Illinois by saving a ton of cash on your last-minute cheap flight. There’s no more scouring the internet for a good deal—book your flight to Southern Illinois on Hotwire, and you’ll be up, up, and on a getaway in no time.

Because once the wheels are down in Southern Illinois, the good times start rolling. So buckle up, you’re in for a fun ride.

Frequently Asked Questions About flights to Southern Illinois

Don’t waste your time on endless searches for cheap airline tickets oneway or roundtrip. We’ll have you on your way to Southern Illinois with a tiny bag of pretzels in your hand before you can say “tray tables in the upright position”—and for a ticket price that works for your vacay budget.

So all you have to worry about is where you’re headed after the STL airport.

What is the cheapest month to fly to Southern Illinois?

Airline ticket prices fluctuate all the time, depending on the day of the week or the month of the year. The cheapest round trip flights to Southern Illinois are in January, but when you book your flight on Hotwire, savings are always in season.

How many airlines fly to Southern Illinois?

Variety is the spice of life, even when it comes to booking your next trip. Want options for airlines? You’ll find 16 to choose from for your flight to Southern Illinois.

What airport is best to fly into Southern Illinois?

When you’re planning your trip to Southern Illinois, convenience is the name of the game. Luckily, Southern Illinois Williamson County Regional Airport is nearby so you can deplane and get going on checking off everything on your Southern Illinois must-do list.

How much are flights to Southern Illinois?

Got very cheap flights on your vacation itinerary? When you book your airline tickets to Southern Illinois on Hotwire, you may just get what’s on your getaway wish list. With tickets as low as $118, you’ll have leftover cash for at least a magazine and a bottle of water at the airport book store.

How to get cheap flights to Southern Illinois?

The trick to saving a stack of cash on your flight to Southern Illinois? Snatch up that Hotwire flight deal when you see a killer rate because it could be gone in a flash. And with flights as low as $118 right now, why wait?

Southern Illinois Flight Information
Destination airport
Lambert-St. Louis Intl.
Destination airport IATA code
STL
Roundtrip price
$116

Last Minute Hotel Deals in Southern Illinois

Super 8 by Wyndham O'Fallon
Super 8 by Wyndham O'Fallon
2 out of 5
1100 Eastgate Dr, O'Fallon, IL
The price is $56 per night from Dec 30 to Dec 31
$56
includes taxes & fees
Dec 30 - Dec 31
Book a stay at this business-friendly hotel in O'Fallon. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the helpful staff and the clean ...
7.6/10 Good! (1,001 reviews)
"I came in late at night and left early. The property was fine for my purposes."

Reviewed on Dec 16, 2024

Super 8 by Wyndham O'Fallon
Walker's Bluff Casino Resort
Walker's Bluff Casino Resort
4.5 out of 5
777 Walkers Bluff Way, Carterville, IL
The price is $144 per night from Dec 24 to Dec 25
$144
includes taxes & fees
Dec 24 - Dec 25
Stay at this 4.5-star luxury resort in Carterville. Enjoy free WiFi, free parking, and an outdoor pool. Our guests praise the helpful staff and the clean rooms ...
9.2/10 Wonderful! (260 reviews)
"Went for a weekend get-away with the lady and was a very good time"

Reviewed on Dec 20, 2024

Walker's Bluff Casino Resort
Drury Inn & Suites St. Louis O'Fallon, IL
Drury Inn & Suites St. Louis O'Fallon, IL
3 out of 5
1118 Central Park Drive, O'Fallon, IL
The price is $120 per night from Dec 29 to Dec 30
$120
includes taxes & fees
Dec 29 - Dec 30
Stay at this 3-star business-friendly hotel in O'Fallon. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the breakfast and the helpful staff ...
9.4/10 Exceptional! (1,009 reviews)
"Nice place to stay"

Reviewed on Dec 22, 2024

Drury Inn & Suites St. Louis O'Fallon, IL
Best Western Delta Inn
Best Western Delta Inn
2.5 out of 5
1509 Hampton Dr, Located right off of I-57/70, Effingham, IL
The price is $113 per night from Dec 26 to Dec 27
$113
includes taxes & fees
Dec 26 - Dec 27
Book a stay at this business-friendly hotel in Effingham. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the helpful staff and the clean ...
9.2/10 Wonderful! (1,002 reviews)
"Nice place."

Reviewed on Dec 22, 2024

Best Western Delta Inn
Super 8 by Wyndham Marion
Super 8 by Wyndham Marion
2 out of 5
2601 Vernell Rd, Marion, IL
The price is $66 per night from Dec 25 to Dec 26
$66
includes taxes & fees
Dec 25 - Dec 26
Book a stay at this business-friendly motel in Marion. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the helpful staff and the clean rooms ...
7.6/10 Good! (1,001 reviews)
Pleasantly surprised
"It was comfortable, little dated, slightly dirty. I slept well"

Reviewed on Dec 13, 2024

Super 8 by Wyndham Marion
Baymont by Wyndham Marion
Baymont by Wyndham Marion
2.5 out of 5
2608 W Main St, Marion, IL
The price is $90 per night from Dec 29 to Dec 30
$90
includes taxes & fees
Dec 29 - Dec 30
Book a stay at this business-friendly hotel in Marion. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the helpful staff and the clean rooms ...
8/10 Very Good! (1,005 reviews)
"Front desk clerk not helpful or very friendly at all at check in. Seemed rushed and uninterested. Maybe having a dreary day."

Reviewed on Dec 8, 2024

Baymont by Wyndham Marion
Drury Plaza Hotel Mt. Vernon
Drury Plaza Hotel Mt. Vernon
3 out of 5
145 North 44th Street , Mount Vernon, IL
The price is $117 per night from Dec 29 to Dec 30
$117
includes taxes & fees
Dec 29 - Dec 30
Stay at this 3-star business-friendly hotel in Mount Vernon. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the breakfast and the helpful ...
9.6/10 Exceptional! (1,193 reviews)
"Clean facility, friendly staff, excellent breakfast and happy hour buffets"

Reviewed on Dec 20, 2024

Drury Plaza Hotel Mt. Vernon
Comfort Suites Mount Vernon
Comfort Suites Mount Vernon
2.5 out of 5
404 South 44th Street, Mount Vernon, IL
The price is $128 per night from Dec 29 to Dec 30
$128
includes taxes & fees
Dec 29 - Dec 30
Book a stay at this business-friendly hotel in Mount Vernon. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the breakfast and the helpful ...
8.6/10 Excellent! (1,000 reviews)
"Very clean rooms. Very nice service."

Reviewed on Dec 16, 2024

Comfort Suites Mount Vernon
See all 958 properties in Southern Illinois
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.