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Saint Thomas Island

$238+ Cheap flights from St. Louis (STL) 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 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
STL — STT
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheapflights Tip: The best prices from Lambert-St Louis to Saint Thomas Island Cyril E King are usually found in September or August, booked 28 days in advance, depart on a Wednesday or Sunday and return on a Tuesday

Cheap flight deals from St. Louis to Saint Thomas Island

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Saint Thomas Island (STT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 16, 2025.

Round-trip from

$263
(Orbitz)

One-way from

$238
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$526
From Lambert-St Louis to Saint Thomas Island Cyril E King
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One-way flight from Lambert-St Louis to Saint Thomas Island Cyril E King
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Highest demand for flights based on searches. 1% potential increase in price ($11 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from St. Louis to Saint Thomas Island

Cheapest flights from St. Louis to Saint Thomas Island
Explore the most affordable flight options available from St. Louis to Saint Thomas Island. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This CheapOair deal was found by Cheapflights users on 9/16. 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 CheapOair 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 9/16$251
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 9/15$303
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 9/15$306
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 11/912:20 pmSTL - STT
1 stop22h 08mSpirit Airlines
Sat 11/151:33 pmSTT - STL
1 stop23h 28mSpirit Airlines
Deal found 9/15$311
This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
Thu 10/1610:57 amSTL - STT
1 stop21h 59mSpirit Airlines
Wed 10/2211:01 amSTT - STL
1 stop24h 01mSpirit Airlines
Deal found 9/15$321
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 10/1210:57 amSTL - STT
1 stop21h 59mSpirit Airlines
Wed 10/2211:01 amSTT - STL
1 stop24h 01mSpirit Airlines
Deal found 9/15$322
This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
Thu 10/1610:57 amSTL - STT
1 stop21h 59mSpirit Airlines
Sat 10/1811:01 amSTT - STL
1 stop8h 09mSpirit Airlines
Deal found 9/15$324

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis 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 16, 2025.
Use the filters below to find and compare flights from St. Louis to Saint Thomas Island that are best for you.

Fly from

St. Louis

Fly to

Saint Thomas Island

Route

Depart

Return

Price

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

Sun 11/9

12:20 pm-12:28 pm

1 stop22h 08m

Saint Thomas Island Cyril E King

Sat 11/15

1:33 pm-11:01 am

1 stop23h 28m

$312

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

$349

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

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

Fri 10/17

6:05 pm-12:59 pm

1 stop17h 54m

Saint Thomas Island Cyril E King

Wed 10/22

11:01 am-10:02 am

1 stop24h 01m

$362

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

Mon 10/13

9:06 pm-9:56 am

2 stops35h 50m

Saint Thomas Island Cyril E King

Sat 10/18

11:01 am-6:10 pm

1 stop8h 09m

$362

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

Sun 11/2

10:57 am-10:51 am

1 stop21h 54m

Saint Thomas Island Cyril E King

Sat 11/8

1:33 pm-11:01 am

1 stop23h 28m

$374

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

Fri 10/17

11:01 am-3:38 pm

2 stops29h 37m

$419

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

Sun 10/19

2:04 pm-7:26 pm

2 stops30h 22m

$426

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

Fri 11/14

4:56 pm-12:28 pm

2 stops17h 32m

Saint Thomas Island Cyril E King

Mon 11/24

1:33 pm-11:01 am

1 stop23h 28m

$493

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 15 results
1
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Best time to book a flight from St. Louis to Saint Thomas Island

Have a flexible travel schedule? Discover the best time to fly to Saint Thomas Island from St. Louis 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 St. Louis to Saint Thomas Island

How far ahead should I book a flight from St. Louis to Saint Thomas Island?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Saint Thomas Island. Price data was last updated on September 12, 2025.

The price you pay for your flight from St. Louis to Saint Thomas Island may vary depending on when you book. For the best chance of a lower fare, look to book 28 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from St. Louis to Saint Thomas Island?

Currently, September is the cheapest month in which you can book a flight from St. Louis to Saint Thomas Island (average of $433). Flying from St. Louis 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 STL to STT?

Find hourly flight availability from St. Louis 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 16, 2025.

When flying from St. Louis to Saint Thomas Island, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 48% versus a flight in the morning.

Reviews of airlines servicing Saint Thomas Island

Get insights into the airlines that provide service to Saint Thomas Island. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Saint Thomas Island. Reviews last updated September 16, 2025.
Peruse reviews from past customers who have flown with Delta, United Airlines, and American Airlines from St. Louis to Saint Thomas Island to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,957 reviews

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

7.9

Food

7.3

Boarding

8.2

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
7,957 reviews
Delta
8.0
Very good
7,957 reviews

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

7.9

Food

7.3

Boarding

8.2

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
8,924 reviews
Delta
8.0
Very good
7,957 reviews

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

7.9

Food

7.3

Boarding

8.2

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
7,957 reviews

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

7.9

Food

7.3

Boarding

8.2

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
8,019 reviews
Delta
8.0
Very good
7,957 reviews

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

7.9

Food

7.3

Boarding

8.2

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

Find useful and relevant information for your journey from St. Louis 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.

  • How long is the flight from St. Louis to Saint Thomas Island?

    Departing from St. Louis to Saint Thomas Island will take you 22h 08m. St. Louis and Saint Thomas Island are separated by a distance of 2074 mi.

  • What are the cheapest airlines flying from St. Louis to Saint Thomas Island round-trip?

    Spirit Airlines, at $147, was found to be the cheapest airline from St. Louis to Saint Thomas Island.Alternate airlines to your destination round-trip include United Airlines and American Airlines. Spirit Airlines is 78% cheaper than the average price of flights available within the next 90 days to this destination.

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

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

  • How can I find direct flights from St. Louis 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 St. Louis to Saint Thomas Island.

  • Can I find deals for business class flights from St. Louis to Saint Thomas Island?

    Yes. Cheapflights offers flight deals from St. Louis 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 St. Louis to Saint Thomas Island?

    Currently, September is the cheapest month in which you can book a flight from St. Louis to Saint Thomas Island (average of $433). Flying from St. Louis 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 St. Louis to Saint Thomas Island

See prices for flight routes from nearby airports that may be better suited for you.
Kansas City to Saint Thomas Island flights
Kansas City to Christiansted flights
St. Louis to Christiansted flights
Springfield to Saint Thomas Island flights

Top 4 airlines flying from St. Louis to Saint Thomas Island

Discover the top 4 airlines that operate flights from St. Louis 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 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$147Average$305FlexibilityNo cancel feeOn-time65%
United AirlinesCheapest$454Average$608FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$497Average$734FlexibilityNo cancel feeOn-time71%
DeltaCheapest$509Average$656FlexibilityNo cancel feeOn-timeN/A

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