Cheap Flights to Southern Illinois

View AU$919 flight on Mon, 25 May 2026Opens in a new window

Flight 1

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Cheap Tickets to Southern Illinois

These prices were available within the past 7 days. Prices quoted are per person, return, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Thu, 4 June - Mon, 8 June
MEL
Melbourne
STL
St. Louis
AU$1,434 Return, found 11 hours ago
AU$1,434
Return
found 11 hours ago
Select Air Canada flight, departing Thu, 4 June from Melbourne to St. Louis, returning Mon, 8 June, priced at AU$1,434 found 11 hours ago
Qantas Airways
Sat, 23 May - Fri, 29 May
MEL
Melbourne
STL
St. Louis
AU$1,575 Return, found 7 hours ago
AU$1,575
Return
found 7 hours ago
Select Qantas Airways flight, departing Sat, 23 May from Melbourne to St. Louis, returning Fri, 29 May, priced at AU$1,575 found 7 hours ago
Virgin Australia
Thu, 4 June - Mon, 8 June
MEL
Melbourne
STL
St. Louis
AU$1,580 Return, found 11 hours ago
AU$1,580
Return
found 11 hours ago
Select Virgin Australia flight, departing Thu, 4 June from Melbourne to St. Louis, returning Mon, 8 June, priced at AU$1,580 found 11 hours ago
American Airlines
Fri, 24 Apr - Mon, 4 May
MEL
Melbourne
STL
St. Louis
AU$1,620 Return, just found
AU$1,620
Return
just found
Select American Airlines flight, departing Fri, 24 Apr from Melbourne to St. Louis, returning Mon, 4 May, priced at AU$1,620 just found
United
Wed, 29 Apr - Mon, 11 May
MEL
Melbourne
STL
St. Louis
AU$1,635 Return, just found
AU$1,635
Return
just found
Select United flight, departing Wed, 29 Apr from Melbourne to St. Louis, returning Mon, 11 May, priced at AU$1,635 just found

Frequently asked questions

How do I find cheap flights to Southern Illinois that have flexible change policies?
When it comes to flying these days, flexibility is key. That's why we have a "No change fee" search function to help you find flexible, low-priced tickets to Southern Illinois. It's on the left of your screen underneath the "Flexible change policies" heading.
Which airlines fly to Southern Illinois?
Work out your travel dates and then fly into or near Southern Illinois with one of these well-known airlines:

  • Southwest Airlines - 2 214 flights to or near Southern Illinois each month, including 2 214 flights to Lambert-St. Louis Intl. Airport (STL) per month.
  • American Airlines - 971 flights to or near Southern Illinois each month, including 789 flights to Lambert-St. Louis Intl. Airport (STL) per month.
  • Delta Air Lines - 728 flights to or near Southern Illinois each month, including 650 flights to Lambert-St. Louis Intl. Airport (STL) per month.

How can I find cheap tickets to Southern Illinois?
You'll always nab a fabulous deal with Expedia, but our "flexible dates" search function makes it that much easier. Enter your preferred travel date, then click on the flexible dates link above to see a list of prices for nearby days. AU$1,434 was the best price for a flight to Southern Illinois in the last seven days.
How much is a flight to Southern Illinois?
There were a lot of low-cost fares for the taking in the last seven days, with the price of a return ticket to Southern Illinois varying between AU$1,434 and AU$1,635. Many lucky travellers scored one-way seats from Melbourne (AVV) for just AU$919.
What are the most popular airports to fly into in Southern Illinois?
Jet off to Southern Illinois and you'll have a few airports to decide between. Here are some of the region's busiest:

  • Lambert-St. Louis Intl. Airport (STL) - 4 902 flights per month.
  • Evansville Regional Airport (EVV) - 277 flights per month.
  • Williamson County Regional Airport (MWA) - 156 flights per month.

When is the cheapest time to fly to Southern Illinois?
If you'd prefer to spend your cash experiencing Southern Illinois rather than on your flight there, leave earlier in the week. The cheapest day to travel is normally Tuesday, with Monday a close second. With many folks travelling on the weekend, Saturday typically has the highest ticket prices.
How much is a plane ticket to Southern Illinois?
Airfares varied from AU$1,434 to AU$1,635 over the last seven days. When you're ready to book, we're here to help you pick up the best price to Southern Illinois.
What months are the cheapest to book a flight to Southern Illinois?
To pick up an awesome deal to Southern Illinois, book during February when prices are at their cheapest. The most expensive time to book? In the U.S, it's the festive month of December.

Travel information

Destination airport
Lambert-St. Louis Intl.
Destination airport IATA code
STL
Destination city name
St. Louis
Return price
AU$1,433

Trending flights to Southern Illinois

These prices were available within the past 7 days. Prices quoted are per person, return, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Thu, 4 June - Mon, 8 June
MEL
Melbourne
STL
St. Louis
AU$1,434 Return, found 11 hours ago
AU$1,434
Return
found 11 hours ago
Select Air Canada flight, departing Thu, 4 June from Melbourne to St. Louis, returning Mon, 8 June, priced at AU$1,434 found 11 hours ago

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