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Southwest Illinois

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Southwest Illinois Flights as Low as $118

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

Frontier Airlines
Thu, Nov 14 - Sat, Nov 16
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$118 Roundtrip, found 3 hours ago
$118
Roundtrip
found 3 hours ago
Select Frontier Airlines flight, departing Thu, Nov 14 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Sat, Nov 16, priced at $118 found 3 hours ago
Frontier Airlines
Sat, Nov 16 - Tue, Nov 19
ONT
Los Angeles - Ontario Intl.
STL
Lambert-St. Louis Intl.
$118 Roundtrip, found 3 hours ago
$118
Roundtrip
found 3 hours ago
Select Frontier Airlines flight, departing Sat, Nov 16 from Los Angeles - Ontario Intl. to Lambert-St. Louis Intl., returning Tue, Nov 19, priced at $118 found 3 hours ago
Frontier Airlines
Mon, Dec 9 - Thu, Dec 12
LAX
Los Angeles Intl.
STL
Lambert-St. Louis Intl.
$118 Roundtrip, found 15 hours ago
$118
Roundtrip
found 15 hours ago
Select Frontier Airlines flight, departing Mon, Dec 9 from Los Angeles Intl. to Lambert-St. Louis Intl., returning Thu, Dec 12, priced at $118 found 15 hours ago
Frontier Airlines
Fri, Nov 1 - Thu, Nov 7
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$128 Roundtrip, found 16 hours ago
$128
Roundtrip
found 16 hours ago
Select Frontier Airlines flight, departing Fri, Nov 1 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Thu, Nov 7, priced at $128 found 16 hours ago
Frontier Airlines
Thu, Nov 14 - Wed, Nov 20
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$132 Roundtrip, found 3 hours ago
$132
Roundtrip
found 3 hours ago
Select Frontier Airlines flight, departing Thu, Nov 14 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Wed, Nov 20, priced at $132 found 3 hours ago
Frontier Airlines
Tue, Oct 15 - Fri, Oct 25
ONT
Los Angeles - Ontario Intl.
STL
Lambert-St. Louis Intl.
$134 Roundtrip, found 6 hours ago
$134
Roundtrip
found 6 hours ago
Select Frontier Airlines flight, departing Tue, Oct 15 from Los Angeles - Ontario Intl. to Lambert-St. Louis Intl., returning Fri, Oct 25, priced at $134 found 6 hours ago
Frontier Airlines
Wed, Dec 11 - Thu, Dec 12
LAX
Los Angeles Intl.
STL
Lambert-St. Louis Intl.
$137 Roundtrip, found 15 hours ago
$137
Roundtrip
found 15 hours ago
Select Frontier Airlines flight, departing Wed, Dec 11 from Los Angeles Intl. to Lambert-St. Louis Intl., returning Thu, Dec 12, priced at $137 found 15 hours ago
Frontier Airlines
Fri, Nov 1 - Fri, Nov 8
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$138 Roundtrip, found 16 hours ago
$138
Roundtrip
found 16 hours ago
Select Frontier Airlines flight, departing Fri, Nov 1 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Fri, Nov 8, priced at $138 found 16 hours ago
Frontier Airlines
Fri, Oct 18 - Mon, Oct 21
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$143 Roundtrip, found 2 days ago
$143
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Fri, Oct 18 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Mon, Oct 21, priced at $143 found 2 days ago
Frontier Airlines
Sat, Sep 28 - Sun, Oct 6
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$144 Roundtrip, found 6 days ago
$144
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Sat, Sep 28 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Sun, Oct 6, priced at $144 found 6 days ago
Spirit Airlines
Tue, Oct 22 - Thu, Oct 24
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$186 Roundtrip, found 1 day ago
$186
Roundtrip
found 1 day ago
Select Spirit Airlines flight, departing Tue, Oct 22 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Thu, Oct 24, priced at $186 found 1 day ago
Southern Airways Express
Tue, Oct 29 - Thu, Nov 7
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$200 Roundtrip, found 15 hours ago
$200
Roundtrip
found 15 hours ago
Select Southern Airways Express flight, departing Tue, Oct 29 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Thu, Nov 7, priced at $200 found 15 hours ago
Delta
Wed, Nov 13 - Fri, Nov 22
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$211 Roundtrip, found 3 hours ago
$211
Roundtrip
found 3 hours ago
Select Delta flight, departing Wed, Nov 13 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Fri, Nov 22, priced at $211 found 3 hours ago
American Airlines
Tue, Oct 29 - Tue, Nov 5
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$217 Roundtrip, found 16 hours ago
$217
Roundtrip
found 16 hours ago
Select American Airlines flight, departing Tue, Oct 29 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Tue, Nov 5, priced at $217 found 16 hours ago
United
Sat, Nov 16 - Tue, Nov 19
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$230 Roundtrip, found 3 hours ago
$230
Roundtrip
found 3 hours ago
Select United flight, departing Sat, Nov 16 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Tue, Nov 19, priced at $230 found 3 hours ago
Alaska Airlines
Mon, Nov 4 - Wed, Nov 6
LAX
Los Angeles Intl.
STL
Lambert-St. Louis Intl.
$332 Roundtrip, found 7 hours ago
$332
Roundtrip
found 7 hours ago
Select Alaska Airlines flight, departing Mon, Nov 4 from Los Angeles Intl. to Lambert-St. Louis Intl., returning Wed, Nov 6, priced at $332 found 7 hours ago

Cheap Flights to Southwest Illinois

Fall in love at first flight with your vacation to Southwest 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 Southwest Illinois on Hotwire, and you’ll be up, up, and on a getaway in no time.

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

Frequently Asked Questions About flights to Southwest Illinois

Don’t waste your time on endless searches for cheap airline tickets oneway or roundtrip. We’ll have you on your way to Southwest 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 Southwest 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 Southwest Illinois are in November, but when you book your flight on Hotwire, savings are always in season.

How many airlines fly to Southwest 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 Southwest Illinois.

What airport is best to fly into Southwest Illinois?

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

How much are flights to Southwest Illinois?

Got very cheap flights on your vacation itinerary? When you book your airline tickets to Southwest 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 Southwest Illinois?

The trick to saving a stack of cash on your flight to Southwest 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?

Southwest Illinois Flight Information
Destination airport
Lambert-St. Louis Intl.
Destination airport IATA code
STL
Roundtrip price
$118

Last Minute Hotel Deals in Southwest Illinois

Drury Inn & Suites Mt. Vernon
Drury Inn & Suites Mt. Vernon
3 out of 5
145 North 44th Street , Mount Vernon, IL
The price is $127 per night from Oct 27 to Oct 28
$127
includes taxes & fees
Oct 27 - Oct 28
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 ...
9.6/10 Exceptional! (1,158 reviews)
"It was nice"

Reviewed on Sep 24, 2024

Drury Inn & Suites Mt. Vernon
Walker's Bluff Casino Resort
Walker's Bluff Casino Resort
4.5 out of 5
777 Walkers Bluff Way, Carterville, IL
The price is $139 per night from Sep 29 to Sep 30
$139
includes taxes & fees
Sep 29 - Sep 30
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! (217 reviews)
"Walkers Bluff was very clean & the staff was very helpful & friendly."

Reviewed on Sep 25, 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 $125 per night from Oct 6 to Oct 7
$125
includes taxes & fees
Oct 6 - Oct 7
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! (1,002 reviews)
"Proximity to highway"

Reviewed on Sep 26, 2024

Drury Inn & Suites St. Louis O'Fallon, IL
Baymont by Wyndham Marion
Baymont by Wyndham Marion
2.5 out of 5
2608 W Main St, Marion, IL
The price is $98 per night from Oct 28 to Oct 29
$98
includes taxes & fees
Oct 28 - Oct 29
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)
"Ok for the money."

Reviewed on Sep 26, 2024

Baymont by Wyndham Marion
Drury Inn & Suites St. Louis Fairview Heights
Drury Inn & Suites St. Louis Fairview Heights
3 out of 5
12 Ludwig Dr, Fairview Heights, IL
The price is $109 per night from Oct 6 to Oct 7
$109
includes taxes & fees
Oct 6 - Oct 7
Book a stay at this business-friendly hotel in Fairview Heights. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the breakfast and the helpful ...
9/10 Wonderful! (1,001 reviews)
"We are elderly and handicapped. Front desk would not provide us with a first floor room. Only third floor."

Reviewed on Sep 25, 2024

Drury Inn & Suites St. Louis Fairview Heights
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 $54 per night from Oct 6 to Oct 7
$54
includes taxes & fees
Oct 6 - Oct 7
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)
Ok for budget stay
"Room was okay, needs to be updated. Bathroom door was covered in handprints. The phone and alarm clock were on the bedside table but neither work because they have no way to be plugged in. Really need plugs by the bed. Lamp wasnt plugged in either. Furniture all looked old. Rooms do not look like ..."

Reviewed on Sep 24, 2024

Super 8 by Wyndham O'Fallon
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 $65 per night from Oct 2 to Oct 3
$65
includes taxes & fees
Oct 2 - Oct 3
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 ...
8/10 Very Good! (139 reviews)
"This is a recently renovated property that was a pleasant surprise to stay at considering the price we paid for it. We needed a cheap place to crash after a Cardinals baseball game and, based on reading reviews, I thought that this would at least keep us safe at night. It certainly did, and then ..."

Reviewed on Sep 24, 2024

Red Lion Inn & Suites Pontoon Beach
Drury Inn & Suites St. Louis Collinsville
Drury Inn & Suites St. Louis Collinsville
3 out of 5
602 N Bluff Rd, Collinsville, IL
The price is $129 per night from Oct 14 to Oct 15
$129
includes taxes & fees
Oct 14 - Oct 15
Book a stay at this business-friendly hotel in Collinsville. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the breakfast and the helpful ...
9.4/10 Exceptional! (1,002 reviews)
"Had a great experience, would definitely recommend and I’ll visit again."

Reviewed on Sep 24, 2024

Drury Inn & Suites St. Louis Collinsville
See all 640 properties in Southwest 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.