Cheap Flights from St. Thomas (STT) to St. Louis (CPS)

Popular airlines from Cyril E. King Airport (STT) to St. Louis, MO (CPS-St. Louis Downtown)

Alternative airports near St. Louis

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Lambert-St. Louis Intl. STL. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $706
STL
Lambert-St. Louis Intl.
Cheapest
Average driving time to city center20 min
Flights from $706

Frequently asked questions

How much does a flight from Cyril E. King Airport (STT) to St. Louis Downtown Airport (CPS) cost?
Grab a cheap one-way flight or cheap return flight from Cyril E. King Airport (STT) to St. Louis Downtown Airport (CPS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Cyril E. King Airport (STT) to St. Louis Downtown Airport (CPS)?
is the cheapest month to fly from STT to CPS. Planning your trip for the off-season is often the key to landing a great deal.
What is the cheapest airline that flies from Cyril E. King Airport (STT) to St. Louis Downtown Airport (CPS)?
Expedia's filter tool lets you easily compare airlines, flight times and baggage options all in one place. Select your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest STT to CPS flight.
How many flights per day from Cyril E. King Airport (STT) to St. Louis Downtown Airport (CPS)?
You'll need to book a flight with a layover when traveling from Cyril E. King Airport (STT) to St. Louis Downtown Airport (CPS). Direct flights don't operate daily on this route. However, simply filter your search to include one or two stops to find the best option for your trip.
What day of the week has the most flights from STT to CPS?
Generally you'll have the most choice when it comes to flights on a Friday. Tuesdays tend to be the quietest.* However, this can vary depending on the season, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Cyril E. King Airport (STT) to St. Louis Downtown Airport (CPS)?
Book a flight from Cyril E. King Airport (STT) to St. Louis Downtown Airport (CPS) that takes off before 3 PM to reduce the risk of cancellations. Later departures are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Cyril E. King Airport (STT) to St. Louis Downtown Airport (CPS) last-minute?
Waiting until right before your break to book your flight from STT to CPS often results in higher prices. While you may come across some last-minute deals, they're not always guaranteed. Keep your travel plans flexible to maximize your chances of getting a bargain.
Is it cheaper to book a STT to CPS flight and hotel package?
You'll typically save money by securing a STT to CPS flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one place. Once you've selected your preferred flights and accommodations, consider adding extras including tours, car rentals and activities.
Can I cancel or change the date of my flight from Cyril E. King Airport (STT) to St. Louis Downtown Airport (CPS)?
If you reserved your STT to CPS flight within the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the type of fare you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Travel information

Origin airport
Cyril E. King
Destination airport
St. Louis Downtown
Distance
2059 mi

Book with confidence

Book with confidence

St. Thomas to St. Louis Flights

The cheapest times to fly from St. Thomas to St. Louis

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from St. Thomas to St. Louis are during the month of . You can find some of the cheapest flights from St. Thomas to St. Louis with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from St. Thomas to St. Louis

Sunday is one of the best days to book for cheap flights from St. Thomas to St. Louis: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from St. Thomas to St. Louis

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from St. Thomas to St. Louis in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap St. Thomas to St. Louis flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your St. Thomas to St. Louis airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

St. Thomas to St. Louis Flights

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*Available to One Key members.