Flights to Southern Illinois, Illinois from NT$11,547

View NT$6,538 flight on Tue, 2026/5/19Opens in a new window

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How much is the cheapest flight to Southern Illinois?

Prices were available within the past 7 days and start at NT$6,538 for one-way flights and NT$11,547 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sun, Apr 19 - Sat, Apr 25
LAX
Los Angeles
STL
St. Louis
NT$11,547 Roundtrip, found 8 hours ago
NT$11,547
Roundtrip
found 8 hours ago
Select Delta flight, departing Sun, Apr 19 from Los Angeles to St. Louis, returning Sat, Apr 25, priced at NT$11,547 found 8 hours ago
United
Sun, Apr 19 - Sat, Apr 25
LAX
Los Angeles
STL
St. Louis
NT$14,988 Roundtrip, found 8 hours ago
NT$14,988
Roundtrip
found 8 hours ago
Select United flight, departing Sun, Apr 19 from Los Angeles to St. Louis, returning Sat, Apr 25, priced at NT$14,988 found 8 hours ago
American Airlines
Sat, Mar 7 - Tue, Mar 10
LAX
Los Angeles
STL
St. Louis
NT$15,465 Roundtrip, found 1 day ago
NT$15,465
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sat, Mar 7 from Los Angeles to St. Louis, returning Tue, Mar 10, priced at NT$15,465 found 1 day ago
Cathay Pacific
Fri, Apr 24 - Wed, May 6
TPE
Taipei
STL
St. Louis
NT$41,707 Roundtrip, found 4 days ago
NT$41,707
Roundtrip
found 4 days ago
Select Cathay Pacific flight, departing Fri, Apr 24 from Taipei to St. Louis, returning Wed, May 6, priced at NT$41,707 found 4 days ago
Japan Airlines
Fri, Apr 24 - Wed, May 6
TSA
Taipei
STL
St. Louis
NT$47,082 Roundtrip, found 4 days ago
NT$47,082
Roundtrip
found 4 days ago
Select Japan Airlines flight, departing Fri, Apr 24 from Taipei to St. Louis, returning Wed, May 6, priced at NT$47,082 found 4 days ago

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. NT$11,547 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 NT$11,547 and NT$47,082. Many lucky travelers scored one-way seats from Los Angeles (LAX) for just NT$6,538.
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 NT$11,547 to NT$47,082 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
Roundtrip price
NT$11,547

Trending flights to Southern Illinois

Prices were available within the past 7 days and start at NT$6,538 for one-way flights and NT$11,547 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu, May 7 - Sat, May 16
TPE
Taipei
STL
St. Louis
NT$26,897 Roundtrip, found 4 days ago
NT$26,897
Roundtrip
found 4 days ago
Select Delta flight, departing Thu, May 7 from Taipei to St. Louis, returning Sat, May 16, priced at NT$26,897 found 4 days ago

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