Flights to Southern Illinois, Illinois from NT$15,423

View NT$4,828 flight on Fri, 2025/11/14Opens 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$4,828 for one-way flights and NT$15,423 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Mon, Oct 20 - Thu, Oct 23
JFK
New York
STL
St. Louis
NT$15,423 Roundtrip, found 11 hours ago
NT$15,423
Roundtrip
found 11 hours ago
Select American Airlines flight, departing Mon, Oct 20 from New York to St. Louis, returning Thu, Oct 23, priced at NT$15,423 found 11 hours ago
Delta
Mon, Oct 20 - Thu, Oct 23
JFK
New York
STL
St. Louis
NT$18,324 Roundtrip, found 11 hours ago
NT$18,324
Roundtrip
found 11 hours ago
Select Delta flight, departing Mon, Oct 20 from New York to St. Louis, returning Thu, Oct 23, priced at NT$18,324 found 11 hours ago
United
Thu, Oct 23 - Mon, Oct 27
TPE
Taipei
STL
St. Louis
NT$25,975 Roundtrip, found 5 days ago
NT$25,975
Roundtrip
found 5 days ago
Select United flight, departing Thu, Oct 23 from Taipei to St. Louis, returning Mon, Oct 27, priced at NT$25,975 found 5 days ago
Cathay Pacific
Fri, Dec 19 - Sun, Jan 4
TPE
Taipei
STL
St. Louis
NT$27,631 Roundtrip, found 6 days ago
NT$27,631
Roundtrip
found 6 days ago
Select Cathay Pacific flight, departing Fri, Dec 19 from Taipei to St. Louis, returning Sun, Jan 4, priced at NT$27,631 found 6 days ago
All Nippon Airways
Wed, Feb 11 - Wed, Feb 18
TSA
Taipei
STL
St. Louis
NT$36,249 Roundtrip, found 6 days ago
NT$36,249
Roundtrip
found 6 days ago
Select All Nippon Airways flight, departing Wed, Feb 11 from Taipei to St. Louis, returning Wed, Feb 18, priced at NT$36,249 found 6 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$15,423 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$15,423 and NT$36,249. Many lucky travelers scored one-way seats from New York (JFK) for just NT$4,828.
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$15,423 to NT$36,249 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

Travel information

Destination airport
Lambert-St. Louis Intl.
Destination airport IATA code
STL
Destination city name
St. Louis
Roundtrip price
NT$9,378

Trending flights to Southern Illinois

Prices were available within the past 7 days and start at NT$4,828 for one-way flights and NT$15,423 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Thu, Oct 23 - Mon, Oct 27
TPE
Taipei
STL
St. Louis
NT$25,975 Roundtrip, found 5 days ago
NT$25,975
Roundtrip
found 5 days ago
Select United flight, departing Thu, Oct 23 from Taipei to St. Louis, returning Mon, Oct 27, priced at NT$25,975 found 5 days ago

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