$343 Cheap Flights from Pasco (PSC) to St. Thomas (STT)

View $343 flight on Sat, Aug 2, 2025Opens in a new window

Popular airlines from Tri-Cities Airport (PSC) to Cyril E. King Airport (STT)

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Cheap Flights from Pasco to St. Thomas (PSC-STT)

Prices were available within the past 7 days and start at $343 for one-way flights and $609 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Mon, Sep 15 - Wed, Oct 1
PSC
Pasco
STT
St. Thomas
$609 Roundtrip, found 1 day ago
$609
Roundtrip
found 1 day ago
Select Delta flight, departing Mon, Sep 15 from Pasco to St. Thomas, returning Wed, Oct 1, priced at $609 found 1 day ago
Delta
Sat, Sep 20 - Thu, Sep 25
PSC
Pasco
STT
St. Thomas
$624 Roundtrip, found 1 day ago
$624
Roundtrip
found 1 day ago
Select Delta flight, departing Sat, Sep 20 from Pasco to St. Thomas, returning Thu, Sep 25, priced at $624 found 1 day ago
Delta
Sun, Sep 14 - Tue, Sep 16
PSC
Pasco
STT
St. Thomas
$679 Roundtrip, found 1 day ago
$679
Roundtrip
found 1 day ago
Select Delta flight, departing Sun, Sep 14 from Pasco to St. Thomas, returning Tue, Sep 16, priced at $679 found 1 day ago
American Airlines
Thu, Sep 18 - Sun, Sep 21
PSC
Pasco
STT
St. Thomas
$689 Roundtrip, found 1 day ago
$689
Roundtrip
found 1 day ago
Select American Airlines flight, departing Thu, Sep 18 from Pasco to St. Thomas, returning Sun, Sep 21, priced at $689 found 1 day ago
American Airlines
Fri, Aug 1 - Thu, Aug 14
PSC
Pasco
STT
St. Thomas
$699 Roundtrip, found 1 day ago
$699
Roundtrip
found 1 day ago
Select American Airlines flight, departing Fri, Aug 1 from Pasco to St. Thomas, returning Thu, Aug 14, priced at $699 found 1 day ago
United
Mon, Nov 3 - Wed, Nov 19
PSC
Pasco
STT
St. Thomas
$708 Roundtrip, found 4 days ago
$708
Roundtrip
found 4 days ago
Select United flight, departing Mon, Nov 3 from Pasco to St. Thomas, returning Wed, Nov 19, priced at $708 found 4 days ago
Delta
Sat, Jan 3 - Wed, Jan 14
PSC
Pasco
STT
St. Thomas
$709 Roundtrip, found 2 days ago
$709
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Jan 3 from Pasco to St. Thomas, returning Wed, Jan 14, priced at $709 found 2 days ago
Delta
Sat, Sep 20 - Tue, Sep 23
PSC
Pasco
STT
St. Thomas
$714 Roundtrip, found 1 day ago
$714
Roundtrip
found 1 day ago
Select Delta flight, departing Sat, Sep 20 from Pasco to St. Thomas, returning Tue, Sep 23, priced at $714 found 1 day ago
United
Mon, Nov 3 - Tue, Nov 18
PSC
Pasco
STT
St. Thomas
$722 Roundtrip, found 4 days ago
$722
Roundtrip
found 4 days ago
Select United flight, departing Mon, Nov 3 from Pasco to St. Thomas, returning Tue, Nov 18, priced at $722 found 4 days ago
Alaska Airlines
Sat, Jan 3 - Wed, Jan 14
PSC
Pasco
STT
St. Thomas
$800 Roundtrip, found 2 days ago
$800
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Sat, Jan 3 from Pasco to St. Thomas, returning Wed, Jan 14, priced at $800 found 2 days ago
Flights from Pasco (PSC) to St. Thomas (STT)
Origin airport
Tri-Cities
Destination airport
Cyril E. King
Airlines serving
American Airlines, Delta, United
Roundtrip price
$609
Distance
3612 mi

Pasco to St. Thomas Flights

The cheapest times to fly from Pasco to St. Thomas

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 Pasco to St. Thomas are during the month of September. You can find some of the cheapest flights from Pasco to St. Thomas with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Pasco to St. Thomas: 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 Pasco to St. Thomas

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 Pasco to St. Thomas in 2025. You can also book with separate airlines for your outbound and return journeys, from $343 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 Pasco to St. Thomas 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 Pasco to St. Thomas 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.

 

Frequently asked questions

How much does a flight from Tri-Cities Airport (PSC) to Cyril E. King Airport (STT) cost?
Discover the latest flight deals from PSC to STT by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from PSC to STT?
The cheapest flights from PSC to STT are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from PSC to STT?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from PSC to STT. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Tri-Cities Airport (PSC) to Cyril E. King Airport (STT)?
You'll need to book a flight with a layover if you're traveling from Tri-Cities Airport (PSC) to Cyril E. King Airport (STT). There are no daily direct flights on this route. However, simply filter your search to include one or two stops to discover the best option for your trip.
What day of the week has the most flights from PSC to STT?
Generally you'll have the most choice when it comes to flights on a Friday. Tuesdays tend to be the quietest.* However, this can change 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 Tri-Cities Airport (PSC) to Cyril E. King Airport (STT)?
To avoid potential delays on the Tri-Cities Airport (PSC) to Cyril E. King Airport (STT) route, fly before 3 PM. Departures after this hour have a 22% higher chance of being 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 Tri-Cities Airport (PSC) to Cyril E. King Airport (STT) last-minute?
Waiting until just before your departure to book a flight from PSC to STT often results in higher prices. While you may find some last-minute discounts, they aren't always guaranteed. Be flexible with your itinerary to maximize your chances of landing a bargain.
Is it cheaper to book a PSC to STT flight and hotel package?
Securing a PSC to STT flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of hotels and then add activities, car rentals and flights to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Tri-Cities Airport (PSC) to Cyril E. King Airport (STT)?
If you booked your PSC to STT flight in the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the fare type you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for further details.

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*Available to One Key members.