Cheap Flights to Southern Illinois , IL from CA $255

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How much is the cheapest flight to Southern Illinois?

Prices were available within the past 7 days and start at CA $255 for one-way flights and CA $438 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed., Jul. 10 - Mon., Jul. 15
YYC
Calgary Intl.
STL
Lambert-St. Louis Intl.
CA $438 Roundtrip, found 2 days ago
CA $438
Roundtrip
found 2 days ago
Select Delta flight, departing Wed., Jul. 10 from Calgary Intl. to Lambert-St. Louis Intl., returning Mon., Jul. 15, priced at CA $438 found 2 days ago
Delta
Wed., Sep. 11 - Wed., Sep. 25
YYZ
Pearson Intl.
STL
Lambert-St. Louis Intl.
CA $563 Roundtrip, found 22 hours ago
CA $563
Roundtrip
found 22 hours ago
Select Delta flight, departing Wed., Sep. 11 from Pearson Intl. to Lambert-St. Louis Intl., returning Wed., Sep. 25, priced at CA $563 found 22 hours ago
Delta
Wed., Aug. 28 - Wed., Sep. 4
YUL
Pierre Elliott Trudeau Intl.
STL
Lambert-St. Louis Intl.
CA $570 Roundtrip, found 2 hours ago
CA $570
Roundtrip
found 2 hours ago
Select Delta flight, departing Wed., Aug. 28 from Pierre Elliott Trudeau Intl. to Lambert-St. Louis Intl., returning Wed., Sep. 4, priced at CA $570 found 2 hours ago
American Airlines
Wed., Jul. 10 - Wed., Jul. 17
YYZ
Pearson Intl.
EVV
Evansville Regional
CA $571 Roundtrip, found 1 day ago
CA $571
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed., Jul. 10 from Pearson Intl. to Evansville Regional, returning Wed., Jul. 17, priced at CA $571 found 1 day ago
American Airlines
Wed., Jul. 17 - Tue., Jul. 23
YYZ
Pearson Intl.
CGI
Cape Girardeau Municipal
CA $633 Roundtrip, found 5 days ago
CA $633
Roundtrip
found 5 days ago
Select American Airlines flight, departing Wed., Jul. 17 from Pearson Intl. to Cape Girardeau Municipal, returning Tue., Jul. 23, priced at CA $633 found 5 days ago

Expedia.ca gives you the best tools to secure great deals on flights to Southern Illinois. Use our easy and convenient booking engine to browse nonstop flights and convenient departure points every day of the year. Search airfares from the top airlines to book your perfect flight to Southern Illinois. Whatever your travel needs, you can always rely on Expedia.ca to help you find cheap flights to Southern Illinois.

Using our booking engine is simple - just type in your points of travel and preferred dates and Expedia.ca does the rest! If your travel times are flexible, you can find even better bargains by adjusting your flight dates. Browse connecting flights to increase your chances of finding even lower fares. Thanks to Expedia's Best Price Guarantee, you can book your Southern Illinois flights with full confidence knowing that you've found the best deal online.

Expedia.ca makes the booking process easy and stress-free by offering support along the entire way. Our friendly staff is available 24 hours a day to provide assistance and help you book your ticket. Call us toll-free at 1-888-397-3342 to answer any questions that you may have about your trip to Southern Illinois.

Looking to save even more? Get additional savings by bundling your Southern Illinois flight with a hotel and/or car rental to create a bargain travel package. Early birds can discover terrific savings by booking in advance while last minute travelers can enjoy great last minute deals. With Expedia.ca, there's no shortage of options to save even more on your Southern Illinois trip!

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. CA $438 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 CA $438 and CA $633. Many lucky travelers scored one-way seats from Calgary (YYC) for just CA $255.
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 traveling on the weekend, Saturday typically has the highest ticket prices.
How much is a plane ticket to Southern Illinois?
Airfares varied from CA $438 to CA $633 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.
Flights to Southern Illinois information
Destination airport
Lambert-St. Louis Intl.
Destination airport IATA code
STL
Destination city name
St. Louis
Roundtrip price
CA $437

Trending flights to Southern Illinois

Prices were available within the past 7 days and start at CA $255 for one-way flights and CA $438 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed., Sep. 11 - Wed., Sep. 25
YYZ
Pearson Intl.
STL
Lambert-St. Louis Intl.
CA $563 Roundtrip, found 22 hours ago
CA $563
Roundtrip
found 22 hours ago
Select Delta flight, departing Wed., Sep. 11 from Pearson Intl. to Lambert-St. Louis Intl., returning Wed., Sep. 25, priced at CA $563 found 22 hours ago
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