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

Spirit Airlines, at $261, was found to be the cheapest airline from St. Louis to Saint Thomas Island.Alternate airlines to your destination round-trip include American Airlines and Delta. Spirit Airlines is 59% cheaper than the average price of flights available within the next 90 days to this destination.

What is the cheapest day to fly from St. Louis to Saint Thomas Island?

Travelers seeking maximum savings on their St. Louis to Saint Thomas Island flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

What are the most popular airlines that fly from St. Louis to Saint Thomas Island?

The most popular airlines flying from St. Louis to Saint Thomas Island are American Airlines, Delta and Spirit Airlines. Something to consider prior to booking your flight.

What is the cheapest day to fly round-trip from St. Louis to Saint Thomas Island?

Flying to your destination on a Friday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to Saint Thomas Island. Check prices with Cheapflights to find a great deal for your trip.

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

Find a great deal and save up to 202% by booking at least 45 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from St. Louis to Saint Thomas Island within the next two weeks, with the cheapest ticket starting at $351.

What is the cheapest month to fly from St. Louis to Saint Thomas Island?

Our data shows that September tends to be the cheapest month to fly to Saint Thomas Island from St. Louis. Users have commonly found prices around $651 for the month, but tickets can be as low as $260. Due to multiple factors, prepare for potentially higher prices in December.

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.

$151+ Flights from St. Louis to Saint Thomas Island

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1. Tell us where you want to go

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2. Select your favorite providers

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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 October, booked 44 days in advance, depart on a Wednesday or Sunday and return on a Tuesday

Cheap flight deals from St. Louis to Saint Thomas Island

Round-trip from	$261 (FlightHub)
Popular in	December
Cheapest in	September
Average price	$784

From Lambert-St Louis to Saint Thomas Island Cyril E King

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High demand for flights, 0% potential price rise

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Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in July 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 julio 25, 2025.

sáb. 10/187:00 pmSTL - STT

1 stop13h 44mSpirit Airlines

sáb. 10/2510:49 amSTT - STL

1 stop8h 06mSpirit Airlines

Deal found 7/23

$261

dom. 8/105:26 pmSTL - STT

1 stop17h 05mMultiple Airlines

sáb. 8/1612:18 pmSTT - STL

3 stops24h 52mMultiple Airlines

Deal found 7/23

$350

vie. 9/55:28 amSTL - STT

1 stop9h 32mAmerican Airlines

lun. 9/85:10 pmSTT - STL

1 stop7h 49mAmerican Airlines

Deal found 7/24

$509

mar. 9/97:00 amSTL - STT

1 stop6h 10mDelta

mar. 9/162:43 pmSTT - STL

1 stop8h 17mDelta

Deal found 7/23

$603

Best flights from St. Louis to Saint Thomas Island
Discover carefully curated flight deals from St. Louis to Saint Thomas Island that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated julio 25, 2025.

sáb. 10/187:00 pmSTL - STT

1 stop13h 44mSpirit Airlines

sáb. 10/2510:49 amSTT - STL

1 stop8h 06mSpirit Airlines

Deal found 7/23

$261

dom. 8/105:26 pmSTL - STT

1 stop17h 05mMultiple Airlines

sáb. 8/1612:18 pmSTT - STL

3 stops24h 52mMultiple Airlines

Deal found 7/23

$350

vie. 9/55:28 amSTL - STT

1 stop9h 32mAmerican Airlines

lun. 9/85:10 pmSTT - STL

1 stop7h 49mAmerican Airlines

Deal found 7/24

$509

lun. 1/57:30 amSTL - STT

1 stop6h 30mDelta

lun. 1/121:55 pmSTT - STL

1 stop11h 45mDelta

Deal found 7/23

$601

mié. 1/75:40 pmSTL - STT

3 stops17h 31mUnited Airlines

mié. 1/145:25 pmSTT - STL

2 stops23h 56mUnited Airlines

Deal found 7/24

$744

Last-minute flights from St. Louis to Saint Thomas Island
Discover last-minute flight deals from St. Louis to Saint Thomas Island. Data last updated julio 25, 2025 and is based on user searches.

dom. 7/276:00 amSTL - STT

1 stop6h 52mDelta

sáb. 8/23:02 pmSTT - STL

1 stop9h 51mDelta

Deal found 7/23

$1,090

jue. 7/315:26 pmSTL - STT

1 stop15h 22mSpirit Airlines

vie. 8/812:26 pmSTT - STL

1 stop27h 13mSpirit Airlines

Deal found 7/23

$454

jue. 7/319:50 amSTL - STT

3 stops22h 58mMultiple Airlines

vie. 8/810:43 amSTT - STL

3 stops23h 57mMultiple Airlines

Deal found 7/23

$552

vie. 8/16:15 amSTL - STT

1 stop8h 28mUnited Airlines

mié. 8/61:19 pmSTT - STL

2 stops24h 08mUnited Airlines

Deal found 7/24

$1,061

dom. 8/105:26 pmSTL - STT

1 stop17h 05mSpirit Airlines

sáb. 8/1612:18 pmSTT - STL

1 stop22h 22mSpirit Airlines

Deal found 7/23

$329

dom. 8/105:26 pmSTL - STT

1 stop17h 05mMultiple Airlines

sáb. 8/1612:18 pmSTT - STL

3 stops24h 52mMultiple Airlines

Deal found 7/23

$350

sáb. 8/164:32 pmSTL - STT

1 stop17h 34mAmerican Airlines

lun. 8/185:10 pmSTT - STL

2 stops17h 19mAmerican Airlines

Deal found 7/24

$670

sáb. 8/165:30 pmSTL - STT

3 stops21h 13mUnited Airlines

lun. 8/184:45 pmSTT - STL

2 stops22h 48mUnited Airlines

Deal found 7/23

$968

Cheapflights Fare Finder

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

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

sáb. 10/18

7:00 pm-9:44 am

1 stop13h 44m

Saint Thomas Island Cyril E King

sáb. 10/25

10:49 am-5:55 pm

1 stop8h 06m

$261

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

dom. 8/10

5:26 pm-11:31 am

1 stop17h 05m

Saint Thomas Island Cyril E King

sáb. 8/16

12:18 pm-12:10 pm

3 stops24h 52m

$350

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

vie. 9/5

5:28 am-4:00 pm

1 stop9h 32m

Saint Thomas Island Cyril E King

mié. 9/10

1:40 pm-11:59 pm

1 stop11h 19m

$509

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

dom. 9/14

6:01 am-1:33 pm

1 stop6h 32m

Saint Thomas Island Cyril E King

jue. 9/18

2:43 pm-11:24 pm

1 stop9h 41m

$579

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

jue. 9/4

10:35 am-9:44 am

1 stop22h 09m

$151

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

lun. 7/28

4:28 pm-10:45 am

1 stop17h 17m

$478

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/22

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?

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 44 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 $649). 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?

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

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

7,967 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

7,967 reviews

Delta

8.0

Very good

7,967 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

8,876 reviews

Delta

8.0

Very good

7,967 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

7,967 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

8,038 reviews

Delta

8.0

Very good

7,967 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 are the cheapest airlines flying from St. Louis to Saint Thomas Island round-trip?
Spirit Airlines, at $261, was found to be the cheapest airline from St. Louis to Saint Thomas Island.Alternate airlines to your destination round-trip include American Airlines and Delta. Spirit Airlines is 59% 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 $649). 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 St. Louis to Saint Thomas Island

Airline	Cheapest	Average	Flexibility	On-time
Spirit Airlines	Cheapest$147	Average$288	FlexibilityNo cancel fee	On-time65%
United Airlines	Cheapest$454	Average$644	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$487	Average$712	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$487	Average$633	FlexibilityNo cancel fee	On-timeN/A

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$151+ 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 9/4. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to Saint Thomas Island with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Lambert-St Louis to Saint Thomas Island Cyril E King are usually found in September or October, booked 44 days in advance, depart on a Wednesday or Sunday and return on a Tuesday

Cheap flight deals from St. Louis to Saint Thomas Island

Round-trip from

Popular in

Cheapest in

Average price

Find flight deals from St. Louis to Saint Thomas Island

Cheapest flights from St. Louis to Saint Thomas IslandExplore 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 julio 25, 2025.

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 julio 25, 2025.

Cheapflights Fare Finder

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

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.

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 July 18, 2025.

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

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 julio 25, 2025.

Reviews of airlines servicing Saint Thomas Island

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.

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.

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

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

How can I 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?

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

Traveling to a place near Saint Thomas Island?

Browse thousands of different options on Cheapflights for your next trip

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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.

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

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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 julio 25, 2025.