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Southwest Illinois

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Southwest Illinois Flights as Low as $56

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

Frontier Airlines
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Delta
American Airlines
United
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United

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 August, 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 Veterans Airport of Southern Illinois 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 $56, 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 $56 right now, why wait?

Southwest Illinois Flight Information
Destination airport
Lambert-St. Louis Intl.
Destination airport IATA code
STL
Roundtrip price
$108

Last Minute Hotel Deals in Southwest Illinois

Drury Inn & Suites St. Louis Fairview Heights

Drury Inn & Suites St. Louis Fairview Heights

3 out of 5
12 Ludwig Dr Fairview Heights IL
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 ...
9.2/10 Wonderful! (1,000 reviews)
"Breakfast normally has one of the best offerings of a hotel breakfast, but this trip the hot breakfast had mostly empty bowls showing signs of lack of attention by staff. After fresh food was delivered, it looked like a pack of wild animals attacking prey. Would atay again but have back up breakfast ..."

Reviewed on May 20, 2026

Drury Inn & Suites St. Louis Fairview Heights
Drury Plaza Hotel Mt. Vernon

Drury Plaza Hotel Mt. Vernon

3.5 out of 5
145 North 44th Street  Mount Vernon IL
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! (1,682 reviews)
"Wonderful stay! Great hotel and convenient location off the highway. We loved the evening meal and happy hour."

Reviewed on May 19, 2026

Drury Plaza Hotel Mt. Vernon
Walker's Bluff Casino Resort

Walker's Bluff Casino Resort

4.5 out of 5
777 Walkers Bluff Way Carterville IL
Book a stay at this luxury resort in Carterville. Enjoy free WiFi, free parking, and an outdoor pool. Our guests praise the helpful staff and the clean rooms ...
9.4/10 Exceptional! (455 reviews)
"Wonderful experience! Second time staying at this property. Top-notch"

Reviewed on May 18, 2026

Walker's Bluff Casino Resort
Super 8 by Wyndham O'Fallon

Super 8 by Wyndham O'Fallon

2 out of 5
1100 Eastgate Dr O'Fallon IL
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 ...
6.8/10 (1,007 reviews)
"The room was dirty"

Reviewed on May 21, 2026

Super 8 by Wyndham O'Fallon
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
Book a stay at this business-friendly hotel in O'Fallon. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the breakfast and the helpful staff ...
9.6/10 Exceptional! (1,001 reviews)
"It was awesome the staff was nice and the room was excellent"

Reviewed on May 20, 2026

Drury Inn & Suites St. Louis O'Fallon, IL
Quality Inn O'Fallon IL - St. Louis

Quality Inn O'Fallon IL - St. Louis

3 out of 5
1409 W US 50 O'Fallon IL
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 ...
7.4/10 Good! (1,001 reviews)
"I booked this overnight stay due to the price and the positive reviews. While the place was clean, in my opinion, it is way past due for an update. Just wanted other travelers to be aware of that fact in order to get a more complete picture."

Reviewed on May 21, 2026

Quality Inn O'Fallon IL - St. Louis
Holiday Inn Express & Suites Mount Vernon by IHG

Holiday Inn Express & Suites Mount Vernon by IHG

2.5 out of 5
300 Potomac Blvd Mount Vernon IL
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 ...
9/10 Wonderful! (1,001 reviews)
"The staff at check-in were super friendly. He didn’t hesitate to help and answered questions. The employee at breakfast was above and beyond. Kept checking on food to make sure there was enough for everyone getting to breakfast. Also he kept things clean. He did top notch. Even asked if we wanted ..."

Reviewed on May 21, 2026

Holiday Inn Express & Suites Mount Vernon by IHG
Drury Inn & Suites Marion

Drury Inn & Suites Marion

3 out of 5
2706 W DeYoung St Marion IL
Book a stay at this business-friendly hotel in Marion. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the breakfast and the helpful staff ...
Drury Inn & Suites Marion
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.