Cheap Flights to Southwest Illinois , IL from CA $234

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How much is the cheapest flight to Southwest Illinois?

Prices were available within the past 7 days and start at CA $234 for one-way flights and CA $381 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu., Oct. 31 - Sun., Nov. 17
YYC
Calgary Intl.
STL
Lambert-St. Louis Intl.
CA $381 Roundtrip, found 6 days ago
CA $381
Roundtrip
found 6 days ago
Select Delta flight, departing Thu., Oct. 31 from Calgary Intl. to Lambert-St. Louis Intl., returning Sun., Nov. 17, priced at CA $381 found 6 days ago
Delta
Sat., Sep. 7 - Wed., Sep. 25
YYZ
Pearson Intl.
STL
Lambert-St. Louis Intl.
CA $566 Roundtrip, found 2 days ago
CA $566
Roundtrip
found 2 days ago
Select Delta flight, departing Sat., Sep. 7 from Pearson Intl. to Lambert-St. Louis Intl., returning Wed., Sep. 25, priced at CA $566 found 2 days ago
Delta
Wed., Jul. 3 - Wed., Jul. 10
YUL
Pierre Elliott Trudeau Intl.
STL
Lambert-St. Louis Intl.
CA $566 Roundtrip, found 6 hours ago
CA $566
Roundtrip
found 6 hours ago
Select Delta flight, departing Wed., Jul. 3 from Pierre Elliott Trudeau Intl. to Lambert-St. Louis Intl., returning Wed., Jul. 10, priced at CA $566 found 6 hours ago
United
Fri., Aug. 2 - Sun., Aug. 4
YUL
Pierre Elliott Trudeau Intl.
STL
Lambert-St. Louis Intl.
CA $580 Roundtrip, found 4 days ago
CA $580
Roundtrip
found 4 days ago
Select United flight, departing Fri., Aug. 2 from Pierre Elliott Trudeau Intl. to Lambert-St. Louis Intl., returning Sun., Aug. 4, priced at CA $580 found 4 days ago
American Airlines
Fri., Sep. 6 - Tue., Sep. 17
YYZ
Pearson Intl.
CGI
Cape Girardeau Municipal
CA $633 Roundtrip, found 3 days ago
CA $633
Roundtrip
found 3 days ago
Select American Airlines flight, departing Fri., Sep. 6 from Pearson Intl. to Cape Girardeau Municipal, returning Tue., Sep. 17, priced at CA $633 found 3 days ago

Expedia.ca gives you the best tools to secure great deals on flights to Southwest 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 Southwest Illinois. Whatever your travel needs, you can always rely on Expedia.ca to help you find cheap flights to Southwest 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 Southwest 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 Southwest Illinois.

Looking to save even more? Get additional savings by bundling your Southwest 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 Southwest Illinois trip!

Frequently asked questions

How do I find cheap flights to Southwest Illinois that have flexible change policies?
By using our neat “No change fee” filter, that’s how. Just enter your travel details, click “Search,” then tick the checkbox directly underneath the “Flexible change policies” heading (top left-hand side of your screen). Expedia makes it a cinch to find flexible and affordable tickets to Southwest Illinois.
Which airlines fly to Southwest Illinois?
When you’re ready to reserve your ticket to or near Southwest Illinois, these popular carriers are waiting to welcome you on board:

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

How can I find cheap tickets to Southwest Illinois?
In the last seven days, CA $381 was the best price for a flight to Southwest Illinois. If you’d love to save even more, book in advance and be flexible with your travel dates. Search for your flight to Southwest Illinois, then see prices for similar time frames by clicking on the “flexible dates” link above.
How much is a flight to Southwest Illinois?
In the last seven days, round-trip tickets to Southwest Illinois sold for as little as CA $381 and reached a maximum price of CA $633. For one-way trips departing from Calgary (YYC), the lowest amount paid during this time was only CA $234.
What are the most popular airports to fly into in Southwest Illinois?
Choosing your airport comes down to factors including your airline, budget and where you plan to explore. These are your choices in Southwest Illinois:

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

When is the cheapest time to fly to Southwest Illinois?
Consider jetting off earlier in the week to book the best airfare to Southwest Illinois. Tuesday is usually the most affordable day to fly, with Monday right behind it. Saturday often has the most expensive ticket prices. This is because a lot of people choose to begin their trip on a weekend.
How much is a plane ticket to Southwest Illinois?
In the last seven days, plane tickets to Southwest Illinois ranged between CA $381 and CA $633. Prices depend on multiple things, particularly the time of departure, carrier, cabin class and when the fare is booked.
What months are the cheapest to book a flight to Southwest Illinois?
The most affordable month to score a terrific deal to Southwest Illinois is February, while the priciest month is December. Avoid this month if you’re looking to save money.
Flights to Southwest Illinois information
Destination airport
Lambert-St. Louis Intl.
Destination airport IATA code
STL
Destination city name
St. Louis
Roundtrip price
CA $381

Trending flights to Southwest Illinois

Prices were available within the past 7 days and start at CA $234 for one-way flights and CA $381 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu., Oct. 31 - Sun., Nov. 17
YYC
Calgary Intl.
STL
Lambert-St. Louis Intl.
CA $381 Roundtrip, found 6 days ago
CA $381
Roundtrip
found 6 days ago
Select Delta flight, departing Thu., Oct. 31 from Calgary Intl. to Lambert-St. Louis Intl., returning Sun., Nov. 17, priced at CA $381 found 6 days ago
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