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Cheap flights from Saint Thomas Island to St. Louis from $557

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Saint Thomas Island to St. Louis departing on 3/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Saint Thomas Island to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
2:05 pm - 9:00 pmSTT-STL
7h 55m1 stop
United Airlines Logo
5:00 am - 3:18 pmSTL-STT
9h 18m1 stop
$557United Airlines
Find Deal
Tue, Mar 10 - Wed, Mar 11
American Airlines Logo
12:30 pm - 10:18 pmSTT-STL
10h 48m2 stops
American Airlines Logo
2:36 pm - 12:55 pmSTL-STT
21h 19m2 stops
$577American Airlines
Find Deal
Tue, Mar 10 - Wed, Mar 11

momondo Fare Finder

 
Customize your flight search to find flights from Saint Thomas Island to St. Louis 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, momondo users made 832,500 searches. Data last updated November 10, 2025.
Use the filters below to find and compare flights from Saint Thomas Island to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Saint Thomas IslandSt. Louis

STT - STL

STTSTL

Saint Thomas Island Cyril E King

Tue 3/10

2:05 pm-9:00 pm

1 stop7h 55m

Lambert-St Louis

Wed 3/11

5:00 am-3:18 pm

1 stop9h 18m

$557

Saint Thomas IslandSt. Louis

STT - STL

STTSTL

Saint Thomas Island Cyril E King

Tue 3/10

12:30 pm-10:18 pm

2 stops10h 48m

Lambert-St Louis

Wed 3/11

2:36 pm-12:55 pm

2 stops21h 19m

$577

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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How to get the cheapest flight ticket from Saint Thomas Island to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Wednesday when prices can be found for as low as $496. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Tuesday because tickets tend to average around $786. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Saint Thomas Island in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $670 when looking at flights departing in the afternoon. At noon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $721 per ticket.

Can stopping save me money on Saint Thomas Island to St. Louis flights?

You could potentially save up to 42% on your flight if you consider stops on a Saint Thomas Island to St. Louis flight.

When to book flights from Saint Thomas Island to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Saint Thomas Island to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Saint Thomas Island to St. Louis (STT to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Saint Thomas Island to St. Louis

Direct flights

None
There are no direct flights from Saint Thomas Island to St. Louis. There are no popular flight routes from Saint Thomas Island to St. Louis.
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  • How far is Saint Thomas Island Cyril E King to Lambert-St Louis by plane?

    There are 2063.4 mi between Saint Thomas Island Cyril E King and Lambert-St Louis. Typically, this will take 7h 55m by plane in normal conditions.

  • When did momondo last update prices for flights from Saint Thomas Island Cyril E King Airport to Lambert-St Louis Airport?

    Prices for flights from Saint Thomas Island Cyril E King Airport to Lambert-St Louis Airport were last updated today.

  • How old do you have to be to fly from Saint Thomas Island Cyril E King Airport to Lambert-St Louis Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Saint Thomas Island Cyril E King Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Florissant
Maryland Heights
O'Fallon
Wentzville
Fenton
Collinsville
St. Peters
Alton
Farmington
Festus
Glencoe
Edwardsville
Clayton
Eureka
Litchfield
Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from Saint Thomas Island to St. Louis?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to St. Louis from Saint Thomas Island.

Can I find flights from Saint Thomas Island to St. Louis with flexible booking policies on momondo?

Yes. All flights to St. Louis from Saint Thomas Island on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Saint Thomas Island to St. Louis?

momondo helps you find the best flight between Saint Thomas Island and St. Louis by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Saint Thomas Island to St. Louis right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Saint Thomas Island to St. Louis flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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