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

Spirit Airlines, at $290, was found to be the cheapest airline from St. Louis to Saint Thomas Island.. Spirit Airlines is 54% cheaper than the average price of flights available within the next 90 days to this destination.

What are the cheapest airlines to fly from St. Louis to Saint Thomas Island one-way?

One-way options have recently been found by users for as low as $150 on Spirit Airlines. Other airlines that offer cheap prices include Delta from $340 and United Airlines from $515 one-way.

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 August tends to be the cheapest month to fly to Saint Thomas Island from St. Louis. Users have commonly found prices around $643 for the month, but tickets can be as low as $468. 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.

$150+ Flights from St. Louis to Saint Thomas Island

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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Lambert-St Louis to Saint Thomas Island Cyril E King are usually found in August 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	$290 (FlightHub)
One-way from	$150 (Orbitz)
Popular in	December
Cheapest in	August
Average price	$712

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. 2% potential increase in price ($16 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($17 potential savings vs. average RT price).

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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 July 3, 2025.

Sat 7/263:34 pmSTL - STT

1 stop17h 14mSpirit Airlines

Fri 8/14:05 pmSTT - STL

1 stop18h 35mSpirit Airlines

Deal found 7/1

$290

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 July 3, 2025.

Sat 7/263:34 pmSTL - STT

1 stop17h 14mSpirit Airlines

Fri 8/14:05 pmSTT - STL

1 stop18h 35mSpirit Airlines

Deal found 7/1

$290

Sat 7/269:50 amSTL - STT

3 stops22h 58mMultiple Airlines

Sat 8/210:43 amSTT - STL

3 stops24h 09mMultiple Airlines

Deal found 7/1

$429

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 July 3, 2025 and is based on user searches.

Tue 7/85:00 amSTL - STT

1 stop6h 46mAmerican Airlines

Wed 7/165:05 pmSTT - STL

1 stop7h 52mAmerican Airlines

Deal found 7/2

$810

Wed 7/911:24 amSTL - STT

1 stop24h 06mSpirit Airlines

Mon 7/2812:26 pmSTT - STL

1 stop29h 05mSpirit Airlines

Deal found 7/2

$427

Wed 7/911:24 amSTL - STT

3 stops25h 36mMultiple Airlines

Mon 7/284:05 pmSTT - STL

3 stops25h 26mMultiple Airlines

Deal found 7/2

$643

Thu 7/107:00 amSTL - STT

1 stop7h 00mDelta

Wed 7/161:27 pmSTT - STL

1 stop11h 26mDelta

Deal found 7/1

$773

Fri 7/116:15 amSTL - STT

1 stop8h 28mUnited Airlines

Mon 7/144:45 pmSTT - STL

2 stops22h 52mUnited Airlines

Deal found 7/1

$923

Sat 7/263:34 pmSTL - STT

1 stop17h 14mSpirit Airlines

Fri 8/14:05 pmSTT - STL

1 stop18h 35mSpirit Airlines

Deal found 7/1

$290

Sat 7/269:50 amSTL - STT

3 stops22h 58mMultiple Airlines

Sat 8/210:43 amSTT - STL

3 stops24h 09mMultiple Airlines

Deal found 7/1

$429

One-way flights from St. Louis to Saint Thomas Island
Search for one-way flight options from St. Louis to Saint Thomas Island. Find affordable one-way fares based on user searches. Data last updated July 3, 2025.

Tue 7/295:26 pmSTL - STT

1 stop15h 22mSpirit Airlines

Deal found 7/2

$150

Tue 7/299:50 amSTL - STT

3 stops22h 58mMultiple Airlines

Deal found 7/2

$270

Mon 7/146:00 amSTL - STT

1 stop6h 52mDelta

Deal found 7/1

$340

Sun 7/275:30 pmSTL - STT

3 stops21h 13mUnited Airlines

Deal found 7/2

$515

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

Sat 7/26

3:34 pm-9:48 am

1 stop17h 14m

Saint Thomas Island Cyril E King

Fri 8/1

4:05 pm-9:40 am

1 stop18h 35m

$290

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

Sat 7/26

9:50 am-9:48 am

3 stops22h 58m

Saint Thomas Island Cyril E King

Sat 8/2

10:43 am-9:52 am

3 stops24h 09m

$429

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

Tue 7/29

5:26 pm-9:48 am

1 stop15h 22m

$150

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

Tue 7/29

9:50 am-9:48 am

3 stops22h 58m

$270

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

Mon 7/14

6:00 am-1:52 pm

1 stop6h 52m

$340

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

Sun 7/27

5:30 pm-3:43 pm

3 stops21h 13m

$515

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

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 $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 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.

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

Reviews of airlines servicing Saint Thomas Island

Peruse reviews from past customers who have flown with Delta, United Airlines, and Spirit 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

7,970 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

7,970 reviews

Delta

8.0

Very good

7,970 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

8,845 reviews

Delta

8.0

Very good

7,970 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

8,094 reviews

Delta

8.0

Very good

7,970 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 is the cheapest airline to fly from St. Louis to Saint Thomas Island round-trip?
Spirit Airlines, at $290, was found to be the cheapest airline from St. Louis to Saint Thomas Island.. Spirit Airlines is 54% cheaper than the average price of flights available within the next 90 days to this destination.
What are the cheapest airlines to fly from St. Louis to Saint Thomas Island one-way?
One-way options have recently been found by users for as low as $150 on Spirit Airlines. Other airlines that offer cheap prices include Delta from $340 and United Airlines from $515 one-way.
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 $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 St. Louis to Saint Thomas Island

Airline	Cheapest	Average	Flexibility	On-time
Spirit Airlines	Cheapest$147	Average$292	FlexibilityNo cancel fee	On-time65%
United Airlines	Cheapest$454	Average$643	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$487	Average$698	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$487	Average$638	FlexibilityNo cancel fee	On-timeN/A

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$150+ 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 7/29. 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 August 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

One-way 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 July 3, 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 July 3, 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 June 27, 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 July 3, 2025.

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

Reviews of airlines servicing Saint Thomas Island

Peruse reviews from past customers who have flown with Delta, United Airlines, and Spirit 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 is the cheapest airline to fly from St. Louis to Saint Thomas Island round-trip?

What are the cheapest airlines to fly from St. Louis to Saint Thomas Island one-way?

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 St. Louis?

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Alternative routes for St. Louis to Saint Thomas Island

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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 July 3, 2025.