Flights to Southern Illinois, Illinois from NT$12,533

View NT$5,734 flight on Wed, 2026/5/13Opens 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$5,734 for one-way flights and NT$12,533 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, Apr 29 - Wed, Jul 15
LAX
Los Angeles
STL
St. Louis
NT$12,533 Roundtrip, found 5 days ago
NT$12,533
Roundtrip
found 5 days ago
Select Delta flight, departing Wed, Apr 29 from Los Angeles to St. Louis, returning Wed, Jul 15, priced at NT$12,533 found 5 days ago
United
Mon, Apr 27 - Thu, Apr 30
LAX
Los Angeles
STL
St. Louis
NT$14,353 Roundtrip, found 1 day ago
NT$14,353
Roundtrip
found 1 day ago
Select United flight, departing Mon, Apr 27 from Los Angeles to St. Louis, returning Thu, Apr 30, priced at NT$14,353 found 1 day ago
American Airlines
Tue, May 19 - Wed, May 27
LAX
Los Angeles
STL
St. Louis
NT$15,860 Roundtrip, found 6 days ago
NT$15,860
Roundtrip
found 6 days ago
Select American Airlines flight, departing Tue, May 19 from Los Angeles to St. Louis, returning Wed, May 27, priced at NT$15,860 found 6 days ago
Korean Air
Mon, Jun 1 - Fri, Jul 17
TPE
Taipei
STL
St. Louis
NT$45,087 Roundtrip, found 4 days ago
NT$45,087
Roundtrip
found 4 days ago
Select Korean Air flight, departing Mon, Jun 1 from Taipei to St. Louis, returning Fri, Jul 17, priced at NT$45,087 found 4 days ago
Japan Airlines
Wed, Jul 22 - Tue, Aug 4
TSA
Taipei
STL
St. Louis
NT$46,165 Roundtrip, found 4 days ago
NT$46,165
Roundtrip
found 4 days ago
Select Japan Airlines flight, departing Wed, Jul 22 from Taipei to St. Louis, returning Tue, Aug 4, priced at NT$46,165 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$12,533 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$12,533 and NT$46,165. Many lucky travelers scored one-way seats from Los Angeles (LAX) for just NT$5,734.
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$12,533 to NT$46,165 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$12,533

Trending flights to Southern Illinois

Prices were available within the past 7 days and start at NT$5,734 for one-way flights and NT$12,533 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, May 19 - Tue, Aug 11
TPE
Taipei
STL
St. Louis
NT$27,000 Roundtrip, found 2 days ago
NT$27,000
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, May 19 from Taipei to St. Louis, returning Tue, Aug 11, priced at NT$27,000 found 2 days ago

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