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

Spirit Airlines, at $457, 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 29% 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 $298 on Delta. Other airlines that offer cheap prices include American Airlines from $398 and United Airlines from $421 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 September tends to be the cheapest month to fly to Saint Thomas Island from St. Louis. Users have commonly found prices around $645 for the month, but tickets can be as low as $260. Due to multiple factors, prepare for potentially higher prices in December.

Most accurate provider : When it comes to deals on St. Louis-Saint Thomas Island flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on St. Louis-Saint Thomas Island flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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.

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.

$298+ Flights from St. Louis to Saint Thomas Island - Compare & Save Big

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1. Tell us where you want to go

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We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

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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 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

Most accurate provider	AranGrant 3 stars
Most trusted provider	AranGrant 3 stars
Round-trip from	$437 (Mytrip)
One-way from	$298 (Delta)
Popular in	December
Cheapest in	September
Average price	$585

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.

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

Search Deals

One-way flight from Lambert-St Louis to Saint Thomas Island Cyril E King

Search Deals

Highest demand for flights based on searches. 0% potential increase in price ($5 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).

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Average for round-trip flights in April 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 April 29, 2025.

Sat 10/187:37 pmSTL - STT

1 stop12h 08mSpirit Airlines

Sat 10/259:40 amSTT - STL

1 stop9h 52mSpirit Airlines

Deal found 4/29

$419

Thu 6/129:50 amSTL - STT

3 stops22h 58mMultiple Airlines

Thu 6/1910:47 amSTT - STL

1 stop24h 46mMultiple Airlines

Deal found 4/29

$437

Thu 6/126:15 amSTL - STT

1 stop8h 28mUnited Airlines

Thu 6/191:19 pmSTT - STL

1 stop9h 56mUnited Airlines

Deal found 4/29

$516

Sat 8/164:32 pmSTL - STT

1 stop17h 33mAmerican Airlines

Mon 8/184:55 pmSTT - STL

2 stops17h 45mAmerican Airlines

Deal found 4/29

$517

Sun 6/296:00 amSTL - STT

1 stop6h 49mDelta

Thu 7/31:24 pmSTT - STL

1 stop6h 20mDelta

Deal found 4/28

$559

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 April 29, 2025.

Thu 6/129:50 amSTL - STT

3 stops22h 58mMultiple Airlines

Thu 6/1910:47 amSTT - STL

1 stop24h 46mMultiple Airlines

Deal found 4/29

$437

Thu 6/126:12 pmSTL - STT

2 stops18h 46mSpirit Airlines

Thu 6/1910:47 amSTT - STL

1 stop24h 46mSpirit Airlines

Deal found 4/29

$457

Thu 6/126:15 amSTL - STT

1 stop8h 28mUnited Airlines

Thu 6/191:19 pmSTT - STL

1 stop9h 56mUnited Airlines

Deal found 4/29

$516

Mon 6/95:29 pmSTL - STT

2 stops16h 20mAmerican Airlines

Tue 6/175:00 pmSTT - STL

2 stops17h 18mAmerican Airlines

Deal found 4/29

$549

Sun 6/296:00 amSTL - STT

1 stop6h 49mDelta

Thu 7/31:24 pmSTT - STL

1 stop6h 20mDelta

Deal found 4/28

$559

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 April 29, 2025 and is based on user searches.

Sat 5/36:30 amSTL - STT

1 stop9h 30mMultiple Airlines

Tue 5/65:40 pmSTT - STL

2 stops23h 09mMultiple Airlines

Deal found 4/29

$965

Wed 5/145:29 pmSTL - STT

2 stops18h 32mUnited Airlines

Sun 5/182:10 pmSTT - STL

1 stop10h 36mUnited Airlines

Deal found 4/29

$881

Mon 5/197:05 amSTL - STT

1 stop7h 05mDelta

Sun 5/251:17 pmSTT - STL

1 stop11h 21mDelta

Deal found 4/29

$706

Mon 5/195:19 amSTL - STT

2 stops10h 01mAmerican Airlines

Sun 5/2511:40 amSTT - STL

2 stops13h 11mAmerican Airlines

Deal found 4/29

$731

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 April 29, 2025.

Tue 7/86:00 amSTL - STT

1 stop8h 00mDelta

Deal found 4/29

$298

Thu 7/35:30 amSTL - STT

2 stops9h 30mAmerican Airlines

Deal found 4/29

$398

Tue 7/85:31 pmSTL - STT

3 stops21h 12mUnited Airlines

Deal found 4/29

$421

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

Thu 6/12

9:50 am-9:48 am

3 stops22h 58m

Saint Thomas Island Cyril E King

Thu 6/19

10:47 am-10:33 am

1 stop24h 46m

$437

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

Thu 6/12

6:12 pm-1:58 pm

2 stops18h 46m

Saint Thomas Island Cyril E King

Thu 6/19

10:47 am-10:33 am

1 stop24h 46m

$457

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

Thu 6/12

6:15 am-3:43 pm

1 stop8h 28m

Saint Thomas Island Cyril E King

Thu 6/19

1:19 pm-10:15 pm

1 stop9h 56m

$516

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

Mon 6/9

5:29 pm-10:49 am

2 stops16h 20m

Saint Thomas Island Cyril E King

Tue 6/17

5:00 pm-9:18 am

2 stops17h 18m

$549

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

Sun 6/29

6:00 am-1:49 pm

1 stop6h 49m

Saint Thomas Island Cyril E King

Thu 7/3

1:24 pm-6:44 pm

1 stop6h 20m

$559

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

Tue 7/8

6:00 am-3:00 pm

1 stop8h 00m

$298

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

Thu 7/3

5:30 am-4:00 pm

2 stops9h 30m

$398

St. LouisSaint Thomas Island

STL - STT

STLSTT

Lambert-St Louis

Tue 7/8

5:31 pm-3:43 pm

3 stops21h 12m

$421

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

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

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.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*2 stars
AranGrant	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Cheapfaremart	Price Accuracy-	Trust Score*1 star
CheapTicketsDeal	Price Accuracy3 stars	Trust 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 AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on St. Louis-Saint Thomas Island flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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?

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 $640). 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

Delta

8.0

Very good

7,929 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta

8.0

Very good

7,929 reviews

Delta

8.0

Very good

7,929 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines

7.4

Good

8,696 reviews

Delta

8.0

Very good

7,929 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

7,929 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Spirit Airlines

6.3

Okay

7,961 reviews

Delta

8.0

Very good

7,929 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

What are the cheapest airlines flying from St. Louis to Saint Thomas Island round-trip?
Spirit Airlines, at $457, 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 29% 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 $298 on Delta. Other airlines that offer cheap prices include American Airlines from $398 and United Airlines from $421 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 $640). 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$282	FlexibilityNo cancel fee	On-time65%
United Airlines	Cheapest$454	Average$671	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$487	Average$683	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$487	Average$649	FlexibilityNo cancel fee	On-timeN/A

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$298+ 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 7/8. 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 August, 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

Most accurate provider

Most trusted provider

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 April 29, 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 April 29, 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.

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.

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 April 25, 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 April 29, 2025.

Reviews of airlines servicing Saint Thomas Island

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?

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?

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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 April 29, 2025.