What are the cheapest airlines to fly from Illinois to Saint Thomas Island one-way?

$128 is the cheapest one-way deal found within the past few days, from Spirit Airlines. You may also be able to find cheap deals on Delta and American Airlines, with prices starting from $293 and $299, respectively.

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

While some choose either Lambert-St Louis - Saint Thomas Island Cyril E King or Chicago Midway - 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 $273. While the most popular route (Chicago O'Hare Intl - Saint Thomas Island Cyril E King) can be booked for $274 on average our data indicates $504 when flying from Illinois to Saint Thomas Island.

What are the most popular airlines that fly from Illinois to Saint Thomas Island?

Consider American Airlines, Delta or Spirit Airlines when booking your flight. These represent the most popular airlines when flying from Illinois to Saint Thomas Island.

How far in advance should I book a flight from Illinois to Saint Thomas Island?

To save up to 107% on this flight, we recommend booking at least 24 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Illinois to Saint Thomas Island from $436 1-2 weeks out and tickets from $666 for flights departing within the next 72 hours.

What is the cheapest month to fly from Illinois to Saint Thomas Island?

Due to multiple factors, expect to potentially pay more when booking in March. For low rates, September can be a great choice for travel to Saint Thomas Island. Flights to Saint Thomas Island from Illinois in September are about $618 on average during September, but can be found for as low as $256.

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.

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.

$128+ Flights from Illinois to Saint Thomas Island

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Cheap flight deals from Illinois to Saint Thomas Island

Round-trip from	$261 (Cheapflightsfares)
One-way from	$128 (Cheapflightsfares)
Popular in	March
Cheapest in	September
Average price	$759
Good round-trip deal	$570 or less
Good one-way deal	$273 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. 7% potential increase in price ($52 potential increase over avg. RT price).

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Cheapest flight prices on average. 3% potential price decrease ($20 potential savings vs. average RT price).

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Average for round-trip flights in June 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 June 12, 2025.

Tue 7/87:49 pmORD - STT

1 stop15h 41mSpirit Airlines

Tue 7/151:25 pmSTT - ORD

1 stop10h 46mSpirit Airlines

Deal found 6/10

$271

Tue 7/155:26 pmSTL - STT

1 stop15h 22mSpirit Airlines

Tue 7/221:25 pmSTT - STL

1 stop22h 04mSpirit Airlines

Deal found 6/10

$296

Fri 7/1810:31 amMDW - STT

2 stops22h 17mMultiple Airlines

Sun 7/204:05 pmSTT - MDW

2 stops22h 59mMultiple Airlines

Deal found 6/11

$389

Thu 7/245:26 pmSTL - STT

1 stop17h 05mMultiple Airlines

Tue 7/294:05 pmSTT - STL

3 stops21h 05mMultiple Airlines

Deal found 6/11

$417

Fri 7/256:20 amMDW - STT

2 stops9h 09mFrontier

Fri 8/15:14 pmSTT - MDW

2 stops28h 08mFrontier

Deal found 6/9

$450

Thu 7/35:47 pmSTL - STT

2 stops21h 40mFrontier

Mon 7/75:14 pmSTT - STL

2 stops31h 33mFrontier

Deal found 6/11

$483

Sat 11/87:07 pmSTL - STT

1 stop14h 38mAmerican Airlines

Thu 11/204:45 pmSTT - STL

2 stops17h 30mAmerican Airlines

Deal found 6/11

$509

Mon 11/36:00 amMDW - STT

1 stop6h 32mDelta

Wed 11/123:32 pmSTT - MDW

1 stop8h 12mDelta

Deal found 6/9

$509

Wed 12/316:00 amBMI - STT

1 stop6h 50mDelta

Thu 1/81:55 pmSTT - BMI

1 stop10h 31mDelta

Deal found 6/10

$509

Tue 10/76:27 pmPIA - STT

2 stops17h 23mAmerican Airlines

Wed 10/221:24 pmSTT - PIA

1 stop9h 06mAmerican Airlines

Deal found 6/9

$509

Fri 10/175:35 pmEVV - STT

2 stops18h 15mAmerican Airlines

Fri 10/245:15 pmSTT - EVV

2 stops24h 23mAmerican Airlines

Deal found 6/10

$509

Mon 9/16:00 amMLI - STT

1 stop7h 10mDelta

Sun 9/142:49 pmSTT - MLI

1 stop8h 41mDelta

Deal found 6/10

$509

Best flights from Illinois to Saint Thomas Island
Discover carefully curated flight deals from Illinois to Saint Thomas Island that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 12, 2025.

Tue 7/87:49 pmORD - STT

1 stop15h 41mSpirit Airlines

Sat 7/194:05 pmSTT - ORD

1 stop8h 22mSpirit Airlines

Deal found 6/12

$261

Fri 7/1810:31 amMDW - STT

2 stops22h 17mMultiple Airlines

Sun 7/204:05 pmSTT - MDW

2 stops22h 59mMultiple Airlines

Deal found 6/11

$389

Fri 7/256:20 amMDW - STT

2 stops9h 09mFrontier

Fri 8/15:14 pmSTT - MDW

2 stops28h 08mFrontier

Deal found 6/9

$450

Sat 8/164:32 pmSTL - STT

1 stop17h 34mAmerican Airlines

Mon 8/185:10 pmSTT - STL

1 stop7h 49mAmerican Airlines

Deal found 6/11

$509

Mon 9/16:00 amMLI - STT

1 stop7h 10mDelta

Sun 9/142:49 pmSTT - MLI

1 stop8h 41mDelta

Deal found 6/10

$509

Tue 7/155:26 pmSTL - STT

1 stop15h 22mSpirit Airlines

Tue 7/221:25 pmSTT - STL

1 stop22h 04mSpirit Airlines

Deal found 6/10

$296

Sat 8/165:30 pmSTL - STT

3 stops21h 13mUnited Airlines

Mon 8/184:45 pmSTT - STL

2 stops22h 48mUnited Airlines

Deal found 6/9

$753

Thu 7/245:26 pmSTL - STT

1 stop17h 05mMultiple Airlines

Tue 7/294:05 pmSTT - STL

3 stops21h 05mMultiple Airlines

Deal found 6/11

$417

Thu 7/35:47 pmSTL - STT

2 stops21h 40mFrontier

Mon 7/75:14 pmSTT - STL

2 stops31h 33mFrontier

Deal found 6/11

$483

Tue 10/73:43 pmBMI - STT

2 stops20h 07mAmerican Airlines

Wed 10/225:15 pmSTT - BMI

2 stops19h 17mAmerican Airlines

Deal found 6/9

$509

Wed 8/136:04 amMDW - STT

1 stop7h 06mDelta

Mon 8/183:23 pmSTT - MDW

1 stop7h 26mDelta

Deal found 6/10

$514

Tue 10/76:27 pmPIA - STT

2 stops17h 23mAmerican Airlines

Wed 10/221:24 pmSTT - PIA

1 stop9h 06mAmerican Airlines

Deal found 6/9

$509

Last-minute flights from Illinois to Saint Thomas Island
Discover last-minute flight deals from Illinois to Saint Thomas Island. Data last updated June 12, 2025 and is based on user searches.

Sun 6/154:04 pmORD - STT

2 stops23h 23mFrontier

Fri 6/205:12 pmSTT - ORD

2 stops16h 01mFrontier

Deal found 6/10

$452

Wed 6/184:45 pmORD - STT

1 stop16h 03mSpirit Airlines

Mon 6/233:03 pmSTT - ORD

2 stops19h 35mSpirit Airlines

Deal found 6/9

$431

Wed 6/185:37 amSTL - STT

1 stop8h 25mAmerican Airlines

Wed 6/251:44 pmSTT - STL

1 stop11h 15mAmerican Airlines

Deal found 6/11

$683

Wed 6/186:00 amORD - STT

1 stop8h 43mUnited Airlines

Wed 6/254:45 pmSTT - ORD

1 stop7h 45mUnited Airlines

Deal found 6/11

$799

Wed 6/186:00 amMDW - STT

1 stop6h 49mDelta

Sun 6/223:00 pmSTT - MDW

1 stop7h 45mDelta

Deal found 6/10

$1,785

Thu 6/196:16 pmORD - STT

2 stops21h 11mFrontier

Mon 6/235:12 pmSTT - ORD

2 stops18h 05mFrontier

Deal found 6/10

$461

Thu 6/199:45 pmORD - STT

2 stops15h 13mMultiple Airlines

Mon 6/232:05 pmSTT - ORD

3 stops20h 33mMultiple Airlines

Deal found 6/10

$617

Sat 6/215:29 amORD - STT

2 stops9h 26mAmerican Airlines

Sat 6/2812:55 pmSTT - ORD

2 stops9h 18mAmerican Airlines

Deal found 6/11

$1,563

Sun 6/226:36 pmSTL - STT

2 stops38h 12mSpirit Airlines

Sat 6/283:03 pmSTT - STL

2 stops27h 01mSpirit Airlines

Deal found 6/10

$520

Sun 6/226:36 pmSTL - STT

3 stops38h 12mMultiple Airlines

Sat 6/2810:47 amSTT - STL

3 stops32h 54mMultiple Airlines

Deal found 6/10

$572

Wed 7/24:20 pmMLI - STT

2 stops19h 29mAmerican Airlines

Wed 7/91:53 pmSTT - MLI

2 stops10h 43mAmerican Airlines

Deal found 6/10

$639

Thu 7/35:47 pmSTL - STT

2 stops21h 40mFrontier

Mon 7/75:14 pmSTT - STL

2 stops31h 33mFrontier

Deal found 6/11

$483

One-way flights from Illinois to Saint Thomas Island
Search for one-way flight options from Illinois to Saint Thomas Island. Find affordable one-way fares based on user searches. Data last updated June 12, 2025.

Tue 7/87:49 pmORD - STT

1 stop15h 41mSpirit Airlines

Deal found 6/11

$128

Thu 7/36:36 pmSTL - STT

2 stops18h 22mSpirit Airlines

Deal found 6/11

$185

Tue 7/86:00 amSTL - STT

1 stop8h 00mDelta

Deal found 6/10

$293

Tue 7/88:01 pmSTL - STT

2 stops18h 54mAmerican Airlines

Deal found 6/10

$299

Sat 7/266:00 amMDW - STT

1 stop8h 00mDelta

Deal found 6/11

$328

Sat 7/268:48 amORD - STT

Nonstop5h 06mUnited Airlines

Deal found 6/11

$328

Tue 7/85:31 pmSTL - STT

3 stops21h 12mUnited Airlines

Deal found 6/10

$454

Fri 11/215:00 amORD - STT

1 stop7h 00mAmerican Airlines

Deal found 6/12

$588

Cheapflights Fare Finder

Use the filters below to find and compare flights from Illinois to Saint Thomas Island that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoSaint Thomas Island

ORD - STT

ORDSTT

Chicago O'Hare Intl

Tue 7/8

7:49 pm-12:30 pm

1 stop15h 41m

Saint Thomas Island Cyril E King

Tue 7/15

1:25 pm-11:11 pm

1 stop10h 46m

$271

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

Tue 7/15

5:26 pm-9:48 am

1 stop15h 22m

Saint Thomas Island Cyril E King

Tue 7/22

1:25 pm-10:29 am

1 stop22h 04m

$296

ChicagoSaint Thomas Island

MDW - STT

MDWSTT

Chicago Midway

Fri 7/18

10:31 am-9:48 am

2 stops22h 17m

Saint Thomas Island Cyril E King

Sun 7/20

4:05 pm-2:04 pm

2 stops22h 59m

$389

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

Thu 7/24

5:26 pm-11:31 am

1 stop17h 05m

Saint Thomas Island Cyril E King

Tue 7/29

4:05 pm-12:10 pm

3 stops21h 05m

$417

ChicagoSaint Thomas Island

MDW - STT

MDWSTT

Chicago Midway

Fri 7/25

6:20 am-4:29 pm

2 stops9h 09m

Saint Thomas Island Cyril E King

Fri 8/1

5:14 pm-8:22 pm

2 stops28h 08m

$450

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

Thu 7/3

5:47 pm-4:27 pm

2 stops21h 40m

Saint Thomas Island Cyril E King

Mon 7/7

5:14 pm-11:47 pm

2 stops31h 33m

$483

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

Sat 8/16

7:44 pm-4:00 pm

2 stops19h 16m

Saint Thomas Island Cyril E King

Mon 8/18

5:10 pm-11:59 pm

1 stop7h 49m

$509

ChicagoSaint Thomas Island

MDW - STT

MDWSTT

Chicago Midway

Mon 11/3

6:00 am-2:32 pm

1 stop6h 32m

Saint Thomas Island Cyril E King

Wed 11/12

3:32 pm-9:44 pm

1 stop8h 12m

$509

BloomingtonSaint Thomas Island

BMI - STT

BMISTT

Bloomington-Normal

Tue 10/7

3:43 pm-12:50 pm

2 stops20h 07m

Saint Thomas Island Cyril E King

Wed 10/22

5:15 pm-11:32 am

2 stops19h 17m

$509

MolineSaint Thomas Island

MLI - STT

MLISTT

Moline Quad-City

Mon 9/1

6:00 am-2:10 pm

1 stop7h 10m

Saint Thomas Island Cyril E King

Sun 9/14

2:49 pm-10:30 pm

1 stop8h 41m

$509

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 27 results

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 $650). 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?

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.

Reviews of airlines servicing Saint Thomas Island

See what other customers who have flown with Delta, United Airlines and American Airlines from Illinois to Saint Thomas Island have to say. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,946 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very good

7,946 reviews

Delta

8.0

Very good

7,946 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

United Airlines

7.4

Good

8,790 reviews

Delta

8.0

Very good

7,946 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

7,946 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Spirit Airlines

6.3

Okay

8,052 reviews

Delta

8.0

Very good

7,946 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Frontier

6.0

Okay

3,295 reviews

Delta

8.0

Very good

7,946 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

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.
What are the cheapest airlines to fly from Illinois to Saint Thomas Island one-way?
$128 is the cheapest one-way deal found within the past few days, from Spirit Airlines. You may also be able to find cheap deals on Delta and American Airlines, with prices starting from $293 and $299, respectively.
What are the most popular routes from Illinois to Saint Thomas Island?
While some choose either Lambert-St Louis - Saint Thomas Island Cyril E King or Chicago Midway - 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 $273. While the most popular route (Chicago O'Hare Intl - Saint Thomas Island Cyril E King) can be booked for $274 on average our data indicates $504 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 $650). 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

St. John

Browse thousands of different options on Cheapflights for your next trip

Top 4 airlines flying from Illinois to Saint Thomas Island

Airline	Cheapest	Average	Flexibility	On-time
Spirit Airlines	Cheapest$182	Average$296	FlexibilityNo cancel fee	On-time65%
American Airlines	Cheapest$462	Average$661	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$467	Average$713	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$481	Average$765	FlexibilityNo cancel fee	On-time69%

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$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 7/8. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Illinois to Saint Thomas Island with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

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 June 12, 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Illinois to Saint Thomas Island

Cheapest flights from Illinois to Saint Thomas IslandExplore 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 June 12, 2025.

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 June 12, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Illinois to Saint Thomas Island that are best for you.

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.

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?

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 June 12, 2025.

Reviews of airlines servicing Saint Thomas Island

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?

What are the cheapest airlines to fly from Illinois to Saint Thomas Island one-way?

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

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

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

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

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

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

Traveling to a place near Illinois?

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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.

Top 4 airlines flying from Illinois to Saint Thomas Island

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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 June 12, 2025.