Flights to Southern Illinois, Illinois from NT$22,551

View NT$5,488 flight on Tue, 2025/12/9Opens 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$5,488 for one-way flights and NT$22,551 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu, Nov 27 - Sun, Nov 30
BOS
Boston
STL
St. Louis
NT$22,551 Roundtrip, found 11 hours ago
NT$22,551
Roundtrip
found 11 hours ago
Select Delta flight, departing Thu, Nov 27 from Boston to St. Louis, returning Sun, Nov 30, priced at NT$22,551 found 11 hours ago
American Airlines
Thu, Nov 27 - Sun, Nov 30
BOS
Boston
STL
St. Louis
NT$23,788 Roundtrip, found 11 hours ago
NT$23,788
Roundtrip
found 11 hours ago
Select American Airlines flight, departing Thu, Nov 27 from Boston to St. Louis, returning Sun, Nov 30, priced at NT$23,788 found 11 hours ago
Cathay Pacific
Fri, Dec 26 - Sat, Jan 31
TPE
Taipei
STL
St. Louis
NT$26,775 Roundtrip, found 3 days ago
NT$26,775
Roundtrip
found 3 days ago
Select Cathay Pacific flight, departing Fri, Dec 26 from Taipei to St. Louis, returning Sat, Jan 31, priced at NT$26,775 found 3 days ago
United
Tue, Nov 18 - Sun, Nov 23
TPE
Taipei
STL
St. Louis
NT$26,934 Roundtrip, found 3 days ago
NT$26,934
Roundtrip
found 3 days ago
Select United flight, departing Tue, Nov 18 from Taipei to St. Louis, returning Sun, Nov 23, priced at NT$26,934 found 3 days ago
All Nippon Airways
Sun, Aug 30 - Sat, Sep 5
TSA
Taipei
STL
St. Louis
NT$36,844 Roundtrip, found 15 hours ago
NT$36,844
Roundtrip
found 15 hours ago
Select All Nippon Airways flight, departing Sun, Aug 30 from Taipei to St. Louis, returning Sat, Sep 5, priced at NT$36,844 found 15 hours 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$22,551 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$22,551 and NT$36,844. Many lucky travelers scored one-way seats from Boston (BOS) for just NT$5,488.
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$22,551 to NT$36,844 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$22,551

Trending flights to Southern Illinois

Prices were available within the past 7 days and start at NT$5,488 for one-way flights and NT$22,551 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Cathay Pacific
Fri, Dec 26 - Sat, Jan 31
TPE
Taipei
STL
St. Louis
NT$26,775 Roundtrip, found 3 days ago
NT$26,775
Roundtrip
found 3 days ago
Select Cathay Pacific flight, departing Fri, Dec 26 from Taipei to St. Louis, returning Sat, Jan 31, priced at NT$26,775 found 3 days ago

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