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Saint Thomas Island

$128+ Cheap flights from Illinois to Saint Thomas Island (STT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/14. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — STT
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Illinois to Saint Thomas Island

Keep the following information in mind while searching for Illinois to Saint Thomas Island flight deals. Data was last updated September 15, 2025.

Round-trip from

$226
(Cheapflightsfares)

One-way from

$128
(Cheapflightsfares)

Popular in

December

Cheapest in

September

Average price

$539

Good round-trip deal

$595 or less

Good one-way deal

$283 or less
From Illinois to Saint Thomas Island Cyril E King
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One-way flight from Illinois to Saint Thomas Island Cyril E King
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Highest demand for flights based on searches. 6% potential increase in price ($41 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($21 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Illinois to Saint Thomas Island Cyril E King.
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Price to beat on a one-way flight from Illinois to Saint Thomas Island Cyril E King.
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Find flight deals from Illinois to Saint Thomas Island

Cheapest flights from Illinois to Saint Thomas Island
Explore the most affordable flight options available from Illinois to Saint Thomas Island. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/187:43 pmORD - STT
1 stop13h 13mSpirit Airlines
Sat 10/2511:01 amSTT - ORD
1 stop13h 44mSpirit Airlines
Deal found 9/13$226
This Cheapflightsfares deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/55:59 pmORD - STT
1 stop16h 29mSpirit Airlines
Tue 11/111:33 pmSTT - ORD
1 stop9h 27mSpirit Airlines
Deal found 9/13$259
This Cheapflightsfares deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/46:05 amORD - STT
1 stop7h 06mSpirit Airlines
Mon 12/81:33 pmSTT - ORD
1 stop12h 09mSpirit Airlines
Deal found 9/14$260
This Cheapflightsfares deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/56:05 amORD - STT
1 stop7h 06mSpirit Airlines
Wed 11/124:06 pmSTT - ORD
1 stop7h 17mSpirit Airlines
Deal found 9/13$261
This Spirit deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Spirit is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/187:15 pmSTL - STT
1 stop13h 41mSpirit Airlines
Sat 10/2511:01 amSTT - STL
1 stop8h 09mSpirit Airlines
Deal found 9/13$263
This Priceline deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/25:00 amORD - STT
1 stop6h 30mSpirit Airlines
Thu 11/61:33 pmSTT - ORD
1 stop12h 09mSpirit Airlines
Deal found 9/13$264
This Cheapflightsfares deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/87:43 pmORD - STT
1 stop13h 13mSpirit Airlines
Wed 10/1511:01 amSTT - ORD
1 stop13h 44mSpirit Airlines
Deal found 9/14$266
This Cheapflightsfares deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/85:59 pmORD - STT
1 stop16h 29mSpirit Airlines
Wed 11/121:33 pmSTT - ORD
1 stop9h 27mSpirit Airlines
Deal found 9/14$273
This Kiwi.com deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/117:15 pmSTL - STT
1 stop13h 41mSpirit Airlines
Sat 10/1811:01 amSTT - STL
1 stop8h 09mSpirit Airlines
Deal found 9/13$301
This Kiwi.com deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/117:15 pmSTL - STT
1 stop13h 41mSpirit Airlines
Wed 10/2211:01 amSTT - STL
1 stop24h 01mSpirit Airlines
Deal found 9/13$303
This Kiwi.com deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/176:05 pmSTL - STT
1 stop17h 54mMultiple Airlines
Wed 10/2211:01 amSTT - STL
1 stop24h 01mMultiple Airlines
Deal found 9/13$309
This Kiwi.com deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1910:57 amSTL - STT
1 stop21h 59mSpirit Airlines
Sat 10/2511:01 amSTT - STL
1 stop8h 09mSpirit Airlines
Deal found 9/13$310

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Saint Thomas Island that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 15, 2025.
Use the filters below to find and compare flights from Illinois to Saint Thomas Island that are best for you.

Fly from

Illinois

Fly to

Saint Thomas Island

Route

Depart

Return

Price

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

Sat 10/18

7:15 pm-9:56 am

1 stop13h 41m

Saint Thomas Island Cyril E King

Sat 10/25

11:01 am-6:10 pm

1 stop8h 09m

$263

ChicagoSaint Thomas Island

ORD - STT

ORDSTT

Chicago O'Hare Intl

Tue 10/14

9:30 am-9:56 am

2 stops23h 26m

Saint Thomas Island Cyril E King

Tue 10/21

11:01 am-6:38 pm

1 stop8h 37m

$288

ChicagoSaint Thomas Island

ORD - STT

ORDSTT

Chicago O'Hare Intl

Tue 10/14

9:30 am-9:56 am

2 stops23h 26m

Saint Thomas Island Cyril E King

Mon 10/20

11:01 am-11:45 pm

1 stop13h 44m

$308

ChicagoSaint Thomas Island

ORD - STT

ORDSTT

Chicago O'Hare Intl

Sun 1/25

5:59 pm-12:28 pm

1 stop16h 29m

Saint Thomas Island Cyril E King

Thu 1/29

1:33 pm-11:42 pm

1 stop12h 09m

$331

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

Sun 10/12

11:32 am-9:56 am

2 stops21h 24m

Saint Thomas Island Cyril E King

Wed 10/22

11:01 am-10:02 am

1 stop24h 01m

$335

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

Sun 10/12

11:32 am-9:56 am

2 stops21h 24m

Saint Thomas Island Cyril E King

Sat 10/18

11:01 am-6:10 pm

1 stop8h 09m

$336

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

Fri 10/17

11:32 am-9:56 am

2 stops21h 24m

Saint Thomas Island Cyril E King

Sat 10/25

11:01 am-6:10 pm

1 stop8h 09m

$340

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

Sat 10/18

7:15 pm-9:56 am

1 stop13h 41m

Saint Thomas Island Cyril E King

Thu 10/23

11:01 am-10:16 am

2 stops24h 15m

$342

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

Sat 10/11

7:15 pm-9:56 am

1 stop13h 41m

Saint Thomas Island Cyril E King

Wed 10/22

11:01 am-9:22 am

2 stops23h 21m

$358

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

Sun 10/12

10:57 am-9:56 am

1 stop21h 59m

Saint Thomas Island Cyril E King

Thu 10/16

11:01 am-10:37 am

2 stops24h 36m

$361

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 52 results
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Best time to book a flight from Illinois to Saint Thomas Island

Have a flexible travel schedule? Discover the best time to fly to Saint Thomas Island from Illinois with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Illinois to Saint Thomas Island

What is the cheapest month to book a flight from Illinois to Saint Thomas Island?

Currently, September is the cheapest month in which you can book a flight from Illinois to Saint Thomas Island (average of $433). Flying from Illinois to Saint Thomas Island in June is currently the most expensive (average of $643). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IL to STT?

Find hourly flight availability from Illinois to Saint Thomas Island. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 15, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Saint Thomas Island as you normally would.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Saint Thomas Island. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Saint Thomas Island from Illinois?

    Saint Thomas Island Cyril E King (STT) is the airport you will fly into if you book a flight from Illinois to Saint Thomas Island. It is only a 2.8 mi journey from Cyril E King (STT) to Saint Thomas Island’s city center.

  • How long is the flight from Illinois to Saint Thomas Island?

    There are many flights that can get you from Illinois to Saint Thomas Island in 4h 48m. Fly via Spirit Airlines, United Airlines, or American Airlines to get the fastest option. Illinois and Saint Thomas Island are separated by a distance of 2116 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the most popular routes from Illinois to Saint Thomas Island?

    While some choose either Chicago Midway - Saint Thomas Island Cyril E King or Lambert-St Louis - Saint Thomas Island Cyril E King, Chicago O'Hare Intl - Saint Thomas Island Cyril E King is the most popular route from Illinois to Saint Thomas Island.

  • What are the cheapest flights from Illinois to Saint Thomas Island?

    Looking at all options, your cheapest flight can be booked for $283. While the most popular route (Chicago O'Hare Intl - Saint Thomas Island Cyril E King) can be booked for $236 on average, our data indicates $1,126 when flying from Illinois to Saint Thomas Island.

  • Can I find deals for flights from Illinois to Saint Thomas Island that include hotel bookings?

    Yes. In addition to deals on Illinois to Saint Thomas Island flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Saint Thomas Island?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Saint Thomas Island.

  • Can I find deals for business class flights from Illinois to Saint Thomas Island?

    Yes. Cheapflights offers flight deals from Illinois to Saint Thomas Island by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Illinois to Saint Thomas Island?

    Currently, September is the cheapest month in which you can book a flight from Illinois to Saint Thomas Island (average of $433). Flying from Illinois to Saint Thomas Island in June is currently the most expensive (average of $643). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Saint Thomas Island?

Book flights to Saint Thomas Island if you plan to visit one of these locations
St. John

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Alternative routes for Illinois to Saint Thomas Island

See prices for flight routes from nearby airports that may be better suited for you.
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Hartford to Saint Thomas Island flights
Milwaukee to Saint Thomas Island flights
Atlantic City to Saint Thomas Island flights
LaGuardia to Christiansted flights
Indianapolis to Saint Thomas Island flights
Reagan-National to Christiansted flights
Syracuse to Saint Thomas Island flights
Providence to Saint Thomas Island flights
Dallas/Fort Worth to Christiansted flights
Seattle to Saint Thomas Island flights
Tampa to Saint Thomas Island flights
Tampa to Christiansted flights
Atlanta to Christiansted flights
San Francisco to Saint Thomas Island flights
Hobby to Christiansted flights
Dulles Intl to Christiansted flights
Orlando to Christiansted flights
Los Angeles to Saint Thomas Island flights
Kansas City to Saint Thomas Island flights
Grand Rapids to Saint Thomas Island flights

Top 4 airlines flying from Illinois to Saint Thomas Island

Discover the top 4 airlines that operate flights from Illinois to Saint Thomas Island. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$182Average$305FlexibilityNo cancel feeOn-time65%
DeltaCheapest$359Average$732FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$478Average$654FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$479Average$721FlexibilityNo cancel feeOn-time69%

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