Search Cheap Flights to
Southern Illinois

Search 400 airlines and 321,000 hotels worldwide.

Stop Planning & Start Exploring

FREE 24 hour cancellation on most flights

Southern Illinois Flights as Low as $116

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

Frontier Airlines
Frontier Airlines
Frontier Airlines
Frontier Airlines
Frontier Airlines
Frontier Airlines
Frontier Airlines
Frontier Airlines
Frontier Airlines
Delta
American Airlines
American Airlines
Bargain Flight
Spirit Airlines
United
Delta

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 October, 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 $116, 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 $116 right now, why wait?

Southern Illinois Flight Information
Destination airport
Lambert-St. Louis Intl.
Destination airport IATA code
STL
Airlines serving
American Airlines, Delta, United
Number of airlines serving
3
Roundtrip price
$179
Popular airline
United

Last Minute Hotel Deals in Southern 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 ...
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
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 ...
Super 8 by Wyndham O'Fallon
Drury Plaza Hotel Mt. Vernon

Drury Plaza Hotel Mt. Vernon

3 out of 5
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 ...
Drury Plaza Hotel Mt. Vernon
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
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 ...
Best Western Delta Inn
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
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 ...
Red Lion Inn & Suites Pontoon Beach
Best Western Plus Pontoon Beach

Best Western Plus Pontoon Beach

3 out of 5
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. ...
Best Western Plus Pontoon Beach
La Quinta Inn & Suites by Wyndham O'Fallon, IL - St. Louis

La Quinta Inn & Suites by Wyndham O'Fallon, IL - St. Louis

3 out of 5
136 Regency Park, O'Fallon, IL
Stay at this 3-star business-friendly hotel in O'Fallon. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the clean rooms in our reviews. ...
La Quinta Inn & Suites by Wyndham O'Fallon, IL - St. Louis
Comfort Suites Mount Vernon

Comfort Suites Mount Vernon

2.5 out of 5
404 South 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 ...
Comfort Suites Mount Vernon
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.