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Saint Thomas Island

$337+ Cheap flights from St. Louis (STL) to Saint Thomas Island (STT)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/7. Fares are subject to change and may not be available on all flights or dates of travel.
STL — STT
May 9 — May 161
Sat 5/9
Sat 5/16
1 adult, Economy
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Cheap 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 April 9, 2026.

This Kiwi.com deal was found by Cheapflights users on 4/4. 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 5/76:55 pm
STL
-
STT
2 stops18h 21m
Multiple Airlines
Sat 5/93:21 pm
STT
-
STL
1 stop10h 00m
Multiple Airlines
Deal found 4/4$337
This Kiwi.com deal was found by Cheapflights users on 4/4. 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 5/94:19 pm
STL
-
STT
1 stop20h 57m
Multiple Airlines
Fri 5/153:21 pm
STT
-
STL
1 stop10h 00m
Multiple Airlines
Deal found 4/4$347
This Kiwi.com deal was found by Cheapflights users on 4/4. 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.
Wed 5/65:27 pm
STL
-
STT
2 stops43h 49m
Multiple Airlines
Fri 5/153:21 pm
STT
-
STL
1 stop10h 00m
Multiple Airlines
Deal found 4/4$352
This Kiwi.com deal was found by Cheapflights users on 4/4. 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 5/76:55 pm
STL
-
STT
2 stops18h 21m
Multiple Airlines
Fri 5/153:21 pm
STT
-
STL
1 stop10h 00m
Multiple Airlines
Deal found 4/4$355
This Kiwi.com deal was found by Cheapflights users on 4/4. 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 5/84:19 pm
STL
-
STT
1 stop20h 57m
Multiple Airlines
Sun 5/101:52 pm
STT
-
STL
2 stops20h 03m
Multiple Airlines
Deal found 4/4$360
This Kiwi.com deal was found by Cheapflights users on 4/4. 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 5/84:19 pm
STL
-
STT
1 stop20h 57m
Multiple Airlines
Thu 5/143:21 pm
STT
-
STL
1 stop10h 00m
Multiple Airlines
Deal found 4/4$365
This Kiwi.com deal was found by Cheapflights users on 4/4. 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 5/173:33 pm
STL
-
STT
2 stops21h 43m
Multiple Airlines
Sat 5/233:21 pm
STT
-
STL
1 stop9h 36m
Multiple Airlines
Deal found 4/4$368
This Kiwi.com deal was found by Cheapflights users on 4/4. 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 5/106:55 pm
STL
-
STT
2 stops18h 21m
Multiple Airlines
Fri 5/153:21 pm
STT
-
STL
1 stop10h 00m
Multiple Airlines
Deal found 4/4$370
This Kiwi.com deal was found by Cheapflights users on 4/4. 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 5/84:19 pm
STL
-
STT
1 stop20h 57m
Multiple Airlines
Mon 5/111:52 pm
STT
-
STL
2 stops28h 41m
Multiple Airlines
Deal found 4/4$371
This Kiwi.com deal was found by Cheapflights users on 4/4. 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 5/94:19 pm
STL
-
STT
1 stop20h 57m
Multiple Airlines
Mon 5/113:21 pm
STT
-
STL
1 stop10h 00m
Multiple Airlines
Deal found 4/4$378
This Kiwi.com deal was found by Cheapflights users on 4/4. 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 5/84:19 pm
STL
-
STT
2 stops19h 28m
Multiple Airlines
Sat 5/93:21 pm
STT
-
STL
1 stop10h 00m
Multiple Airlines
Deal found 4/4$382
This Kiwi.com deal was found by Cheapflights users on 4/4. 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.
Wed 5/65:27 pm
STL
-
STT
2 stops43h 49m
Multiple Airlines
Mon 5/113:21 pm
STT
-
STL
1 stop10h 00m
Multiple Airlines
Deal found 4/4$383

Find 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 April 9, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$337
(Kiwi.com)

Popular in

July

Cheapest in

September

Average price

$598
Provider with most accurate pricing for Lambert-St Louis-Saint Thomas Island Cyril E King flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Saint Thomas Island Cyril E King flights.
Search Deals
From Lambert-St Louis to Saint Thomas Island Cyril E King
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($70 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

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 April 9, 2026.
Use the filters below to find and compare flights from St. Louis to Saint Thomas Island that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

Fri 5/8

6:00 am-3:17 pm

1 stop8h 17m

Saint Thomas Island Cyril E King

Wed 5/13

1:16 pm-11:59 pm

1 stop11h 43m

$400

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

Mon 5/18

7:05 am-3:17 pm

1 stop7h 12m

Saint Thomas Island Cyril E King

Thu 5/21

3:01 pm-11:59 pm

1 stop9h 58m

$400

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

Wed 5/13

6:00 am-1:51 pm

1 stop6h 51m

Saint Thomas Island Cyril E King

Wed 5/20

3:01 pm-11:59 pm

1 stop9h 58m

$400

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

Tue 5/5

6:00 am-1:51 pm

1 stop6h 51m

Saint Thomas Island Cyril E King

Sat 5/9

3:01 pm-11:59 pm

1 stop9h 58m

$465

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

Fri 5/15

6:00 am-3:17 pm

1 stop8h 17m

Saint Thomas Island Cyril E King

Mon 5/18

3:01 pm-9:38 pm

1 stop7h 37m

$465

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

Wed 5/6

7:25 am-2:48 pm

1 stop6h 23m

Saint Thomas Island Cyril E King

Fri 5/15

1:16 pm-11:59 pm

1 stop11h 43m

$465

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

Fri 8/28

5:18 am-3:58 pm

1 stop9h 40m

Saint Thomas Island Cyril E King

Fri 9/4

4:55 pm-9:27 am

2 stops17h 32m

$488

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

Sun 5/10

6:00 am-3:43 pm

1 stop8h 43m

Saint Thomas Island Cyril E King

Thu 5/14

1:22 pm-10:30 pm

1 stop10h 08m

$510

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

Mon 5/18

7:05 am-3:17 pm

1 stop7h 12m

Saint Thomas Island Cyril E King

Mon 5/25

1:16 pm-11:59 pm

1 stop11h 43m

$513
Quickest round-trip

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

Sat 4/18

6:00 am-1:51 pm

1 stop6h 51m

Saint Thomas Island Cyril E King

Fri 4/24

3:05 pm-9:19 pm

1 stop7h 14m

$538

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/4

Sorted by cheapest first

Compare providers for flights from St. Louis to Saint Thomas Island

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Saint Thomas Island in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
MytripPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on St. Louis-Saint Thomas Island flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Saint Thomas Island flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Saint Thomas Island flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Saint Thomas Island flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Saint Thomas Island flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 April 3, 2026.

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 86 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, October is the cheapest month in which you can book a flight from St. Louis to Saint Thomas Island (average of $286). Flying from St. Louis to Saint Thomas Island in November is currently the most expensive (average of $537). 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.

How much does it cost to fly round-trip from St. Louis to Saint Thomas Island?

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 April 9, 2026.
Peruse reviews from past customers who have flown with Southwest,Delta, andUnited 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.
Southwest
8.0
Very good
4,338 reviews

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Food

7.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,338 reviews
Southwest
8.0
Very good
4,338 reviews

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Food

7.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Delta
7.9
Good
8,392 reviews
Southwest
8.0
Very good
4,338 reviews

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Food

7.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
United Airlines
7.4
Good
9,554 reviews
Southwest
8.0
Very good
4,338 reviews

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Food

7.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
American Airlines
7.1
Good
11,559 reviews
Southwest
8.0
Very good
4,338 reviews

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Food

7.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

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 8h 17m. 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?

    United Airlines, at $352, was found to be the cheapest airline from St. Louis to Saint Thomas Island.Alternate airlines to your destination round-trip include Delta and American Airlines. United Airlines is 46% 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, October is the cheapest month in which you can book a flight from St. Louis to Saint Thomas Island (average of $286). Flying from St. Louis to Saint Thomas Island in November is currently the most expensive (average of $537). 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
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 April 9, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$352Average$599FlexibilityNo cancel feeOn-time69%
DeltaCheapest$398Average$586FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$509Average$713FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$554Average$700FlexibilityNo cancel feeOn-time63%

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