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Southern Illinois

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Southern Illinois Flights as Low as $119

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

Frontier Airlines
Sat, Jul 26 - Sat, Aug 2
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$119 Roundtrip, found 1 day ago
$119
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Sat, Jul 26 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Sat, Aug 2, priced at $119 found 1 day ago
Frontier Airlines
Sat, Jun 14 - Sun, Jun 22
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$136 Roundtrip, found 2 days ago
$136
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Sat, Jun 14 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Sun, Jun 22, priced at $136 found 2 days ago
Frontier Airlines
Sat, Jul 19 - Sun, Jul 20
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$139 Roundtrip, found 4 days ago
$139
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Sat, Jul 19 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Sun, Jul 20, priced at $139 found 4 days ago
Frontier Airlines
Sun, Jul 27 - Thu, Jul 31
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$150 Roundtrip, found 5 days ago
$150
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Sun, Jul 27 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Thu, Jul 31, priced at $150 found 5 days ago
American Airlines
Sat, Jul 26 - Sat, Aug 2
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$163 Roundtrip, found 1 day ago
$163
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sat, Jul 26 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Sat, Aug 2, priced at $163 found 1 day ago
Spirit Airlines
Sat, Jul 26 - Sat, Aug 2
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$164 Roundtrip, found 1 day ago
$164
Roundtrip
found 1 day ago
Select Spirit Airlines flight, departing Sat, Jul 26 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Sat, Aug 2, priced at $164 found 1 day ago
Frontier Airlines
Sat, Jun 14 - Sun, Jun 22
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$170 Roundtrip, found 2 days ago
$170
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Sat, Jun 14 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Sun, Jun 22, priced at $170 found 2 days ago
American Airlines
Fri, Jul 25 - Sat, Aug 2
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$173 Roundtrip, found 5 days ago
$173
Roundtrip
found 5 days ago
Select American Airlines flight, departing Fri, Jul 25 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Sat, Aug 2, priced at $173 found 5 days ago
Frontier Airlines
Sat, Jul 26 - Sat, Aug 2
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$174 Roundtrip, found 1 day ago
$174
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Sat, Jul 26 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Sat, Aug 2, priced at $174 found 1 day ago
Delta
Sat, May 24 - Sat, May 24
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$177 Roundtrip, found 6 days ago
$177
Roundtrip
found 6 days ago
Select Delta flight, departing Sat, May 24 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Sat, May 24, priced at $177 found 6 days ago
American Airlines
Mon, Jun 9 - Thu, Jun 12
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$179 Roundtrip, found 22 hours ago
$179
Roundtrip
found 22 hours ago
Select American Airlines flight, departing Mon, Jun 9 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Thu, Jun 12, priced at $179 found 22 hours ago
Delta
Sat, May 24 - Sun, May 25
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$183 Roundtrip, found 4 days ago
$183
Roundtrip
found 4 days ago
Select Delta flight, departing Sat, May 24 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Sun, May 25, priced at $183 found 4 days ago
American Airlines
Sat, Jul 26 - Sat, Aug 2
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$217 Roundtrip, found 1 day ago
$217
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sat, Jul 26 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Sat, Aug 2, priced at $217 found 1 day ago
Bargain Flight
Wed, May 21 - Tue, May 27
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$219 Roundtrip, found 4 days ago
$219
Roundtrip
found 4 days ago
Select Bargain Flight flight, departing Wed, May 21 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Tue, May 27, priced at $219 found 4 days ago
Spirit Airlines
Sat, May 17 - Thu, May 22
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$231 Roundtrip, found 3 days ago
$231
Roundtrip
found 3 days ago
Select Spirit Airlines flight, departing Sat, May 17 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Thu, May 22, priced at $231 found 3 days ago
Delta
Mon, May 5 - Fri, May 16
ATL
Hartsfield-Jackson Atlanta Intl.
EVV
Evansville Regional
$510 Roundtrip, found 1 hour ago
$510
Roundtrip
found 1 hour ago
Select Delta flight, departing Mon, May 5 from Hartsfield-Jackson Atlanta Intl. to Evansville Regional, returning Fri, May 16, priced at $510 found 1 hour 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 July, 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 15 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 $119, 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 $119 right now, why wait?

Southern Illinois Flight Information
Destination airport
Lambert-St. Louis Intl.
Destination airport IATA code
STL
Roundtrip price
$188

Last Minute Hotel Deals in Southern Illinois

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 May 4 to May 5
$117
includes taxes & fees
May 4 - May 5
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! (1,299 reviews)
"The staff is always very polite and my room is always clean."

Reviewed on Apr 25, 2025

Drury Plaza Hotel Mt. Vernon
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 $61 per night from May 11 to May 12
$61
includes taxes & fees
May 11 - May 12
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! (1,000 reviews)
"Not as horrible as expected"

Reviewed on Apr 19, 2025

Super 8 by Wyndham O'Fallon
Quality Inn & Suites near St. Louis and I-255
Quality Inn & Suites near St. Louis and I-255
2.5 out of 5
1607 Pontiac Dr, East St. Louis, IL
The price is $76 per night from May 6 to May 7
$76
includes taxes & fees
May 6 - May 7
Book a stay at this business-friendly hotel in East St. Louis. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the helpful staff and the ...
7.4/10 Good! (1,003 reviews)
"Weight room was kinda limited. The pool Was nice!"

Reviewed on Apr 18, 2025

Quality Inn & Suites near St. Louis and I-255
Drury Inn & Suites Marion
Drury Inn & Suites Marion
3 out of 5
2706 W DeYoung St, Marion, IL
The price is $135 per night from May 4 to May 5
$135
includes taxes & fees
May 4 - May 5
Stay at this 3-star business-friendly hotel in Marion. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the breakfast and the helpful staff ...
9.4/10 Exceptional! (1,003 reviews)
"Great place. Friendly and helpful staff. Wish they would only allow service dogs though"

Reviewed on Apr 27, 2025

Drury Inn & Suites Marion
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 $123 per night from May 4 to May 5
$123
includes taxes & fees
May 4 - May 5
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! (1,008 reviews)
"Very happy with our stay at Drury Motel. Loved the evening drinks and appetizers. Room was very clean and staff was very pleasant."

Reviewed on Apr 29, 2025

Drury Inn & Suites St. Louis O'Fallon, IL
Comfort Suites Mount Vernon
Comfort Suites Mount Vernon
2.5 out of 5
404 South 44th Street, Mount Vernon, IL
The price is $123 per night from May 1 to May 2
$123
includes taxes & fees
May 1 - May 2
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 ...
"Very clean and comfortable."

Reviewed on Apr 27, 2025

Comfort Suites Mount Vernon
Red Lion Inn & Suites Pontoon Beach
Red Lion Inn & Suites Pontoon Beach
2.5 out of 5
1240 E Chain Of Rocks Rd, Granite City, IL
The price is $79 per night from May 1 to May 2
$79
includes taxes & fees
May 1 - May 2
Stay at this hotel in Granite City. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the helpful staff in our reviews. Popular attractions ...
"Nice. Worked as a one nighter. You wouldnt want to vacation here. But ok overall."

Reviewed on Apr 27, 2025

Red Lion Inn & Suites Pontoon Beach
Baymont by Wyndham Marion
Baymont by Wyndham Marion
2.5 out of 5
2608 W Main St, Marion, IL
The price is $104 per night from May 14 to May 15
$104
includes taxes & fees
May 14 - May 15
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 ...
8.2/10 Very Good! (1,005 reviews)
"Nice surroundings clean and comfortable and quiet room. First time traveler with my dog and it was nice to be welcomed."

Reviewed on Apr 23, 2025

Baymont by Wyndham Marion
See all 983 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.