Search Cheap Flights to
Southwest Illinois

Name: Days Inn & Suites by Wyndham Caseyville
Rating: 3.8

Southern Illinois which includes a lake or waterhole and forests

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Southwest Illinois Flights as Low as $228

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

All deals

One way

Roundtrip

Sat, Sep 20 - Wed, Sep 24

JAX

Jacksonville Intl.

STL

Lambert-St. Louis Intl.

$228

Roundtrip

found 2 days ago

Sat, Sep 20 - Wed, Sep 24

JAX

Jacksonville Intl.

STL

Lambert-St. Louis Intl.

$228

Roundtrip

found 2 days ago

Sat, Sep 20 - Wed, Sep 24

JAX

Jacksonville Intl.

STL

Lambert-St. Louis Intl.

$228

Roundtrip

found 2 days ago

Sat, Sep 20 - Wed, Sep 24

JAX

Jacksonville Intl.

STL

Lambert-St. Louis Intl.

$233

Roundtrip

found 2 days ago

Sat, Sep 20 - Wed, Sep 24

JAX

Jacksonville Intl.

STL

Lambert-St. Louis Intl.

$245

Roundtrip

found 2 days ago

Sat, Sep 20 - Wed, Sep 24

JAX

Jacksonville Intl.

STL

Lambert-St. Louis Intl.

$246

Roundtrip

found 2 days ago

Sat, Sep 20 - Wed, Sep 24

JAX

Jacksonville Intl.

STL

Lambert-St. Louis Intl.

$251

Roundtrip

found 2 days ago

Sat, Sep 20 - Wed, Sep 24

JAX

Jacksonville Intl.

STL

Lambert-St. Louis Intl.

$264

Roundtrip

found 2 days ago

Sat, Sep 20 - Wed, Sep 24

JAX

Jacksonville Intl.

STL

Lambert-St. Louis Intl.

$268

Roundtrip

found 2 days ago

Sat, Sep 20 - Wed, Sep 24

JAX

Jacksonville Intl.

STL

Lambert-St. Louis Intl.

$273

Roundtrip

found 2 days ago

Sat, Sep 20 - Wed, Sep 24

JAX

Jacksonville Intl.

STL

Lambert-St. Louis Intl.

$275

Roundtrip

found 2 days ago

Sat, Sep 20 - Wed, Sep 24

JAX

Jacksonville Intl.

STL

Lambert-St. Louis Intl.

$275

Roundtrip

found 2 days ago

Sat, Sep 20 - Wed, Sep 24

JAX

Jacksonville Intl.

STL

Lambert-St. Louis Intl.

$280

Roundtrip

found 2 days ago

Sat, Sep 20 - Wed, Sep 24

JAX

Jacksonville Intl.

STL

Lambert-St. Louis Intl.

$282

Roundtrip

found 2 days ago

Sat, Sep 20 - Wed, Sep 24

JAX

Jacksonville Intl.

STL

Lambert-St. Louis Intl.

$305

Roundtrip

found 2 days ago

Wed, Aug 13 - Wed, Aug 20

JAX

Jacksonville Intl.

MWA

Williamson County Regional

$537

Roundtrip

found 2 days 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 September, 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 $228, 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 $228 right now, why wait?

Southwest Illinois Flight Information
Destination airport	Lambert-St. Louis Intl.
Destination airport IATA code	STL
Roundtrip price	$125

Last Minute Hotel Deals in Southwest Illinois

Drury Plaza Hotel Mt. Vernon

145 North 44th Street , Mount Vernon, IL

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! (1,412 reviews)

"The staff was helpful and friendly. Room was clean"

Reviewed on Jul 29, 2025

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Red Lion Inn & Suites Pontoon Beach

1240 E Chain Of Rocks Rd, Granite City, IL

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 ...

7.8/10 Good! (467 reviews)

"Overall the property was decent for the amount paid. It look like they are in the mist of renovating. When I was there they was paving the parking lot and it was a lot of construction going on around the property that cause me to not sleep that well. Was kind of disappointed that they didn’t have ..."

Reviewed on Jul 30, 2025

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Best Western Plus Pontoon Beach

4 Regency Pkwy, Granite City, IL

Stay at this 3-star business-friendly hotel in Granite City. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the helpful staff in our reviews. ...

8.4/10 Very Good! (714 reviews)

"It was roomy and clean."

Reviewed on Jul 27, 2025

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Super 8 by Wyndham O'Fallon

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 ...

7.4/10 Good! (1,000 reviews)

"Friendly staff and helpful"

Reviewed on Jul 26, 2025

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Drury Inn & Suites Marion

2706 W DeYoung St, Marion, IL

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 ...

9.2/10 Wonderful! (1,020 reviews)

"great staff and service. My room was small, but not a big deal"

Reviewed on Jul 28, 2025

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Quality Inn & Suites near St. Louis and I-255

1607 Pontiac Dr, East St. Louis, IL

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)

Good stay

"Friendly staff, clean room, hotel not in the best area."

Reviewed on Jul 19, 2025

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Drury Inn & Suites St. Louis Fairview Heights

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 ...

9/10 Wonderful! (1,022 reviews)

"Excellent customer service!"

Reviewed on Jul 30, 2025

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Days Inn & Suites by Wyndham Caseyville

2423 Old Country Inn Drive, Caseyville, IL

Book a stay at this business-friendly hotel in Caseyville. Enjoy free breakfast, free WiFi, and free parking. Popular attractions Pleasant Ridge Park and Cahokia ...

3.8/10 (267 reviews)

"Hands down the nastiest rat hole I have ever been in. One hallway was soaked in cat piss and had a flying bug infestation. Don't even get me started about the room. It was as if they mopped it with grease. Sliding around on it and nearly falling is not normal. Then there's the roaches. No shortage ..."

Reviewed on Jul 27, 2025

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See all 684 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.

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