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

View $343 flight on Thu, Jan 22, 2026Opens in a new window

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

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • one key icon

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

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 $664 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Feb 24 - Wed, Mar 11
PSC
Pasco
STT
St. Thomas
$664 Roundtrip, found 4 hours ago
$664
Roundtrip
found 4 hours ago
Select Delta flight, departing Tue, Feb 24 from Pasco to St. Thomas, returning Wed, Mar 11, priced at $664 found 4 hours ago
American Airlines
Mon, Feb 23 - Tue, Mar 10
PSC
Pasco
STT
St. Thomas
$719 Roundtrip, found 4 hours ago
$719
Roundtrip
found 4 hours ago
Select American Airlines flight, departing Mon, Feb 23 from Pasco to St. Thomas, returning Tue, Mar 10, priced at $719 found 4 hours ago
American Airlines
Sun, Jan 18 - Thu, Feb 5
PSC
Pasco
STT
St. Thomas
$744 Roundtrip, found 4 hours ago
$744
Roundtrip
found 4 hours ago
Select American Airlines flight, departing Sun, Jan 18 from Pasco to St. Thomas, returning Thu, Feb 5, priced at $744 found 4 hours ago
American Airlines
Sun, Oct 19 - Thu, Oct 23
PSC
Pasco
STT
St. Thomas
$749 Roundtrip, found 4 days ago
$749
Roundtrip
found 4 days ago
Select American Airlines flight, departing Sun, Oct 19 from Pasco to St. Thomas, returning Thu, Oct 23, priced at $749 found 4 days ago
American Airlines
Tue, Sep 2 - Sat, Sep 6
PSC
Pasco
STT
St. Thomas
$752 Roundtrip, found 5 hours ago
$752
Roundtrip
found 5 hours ago
Select American Airlines flight, departing Tue, Sep 2 from Pasco to St. Thomas, returning Sat, Sep 6, priced at $752 found 5 hours ago
American Airlines
Thu, Feb 5 - Tue, Feb 24
PSC
Pasco
STT
St. Thomas
$754 Roundtrip, found 4 hours ago
$754
Roundtrip
found 4 hours ago
Select American Airlines flight, departing Thu, Feb 5 from Pasco to St. Thomas, returning Tue, Feb 24, priced at $754 found 4 hours ago
Delta
Mon, Jan 12 - Thu, Jan 29
PSC
Pasco
STT
St. Thomas
$757 Roundtrip, found 4 days ago
$757
Roundtrip
found 4 days ago
Select Delta flight, departing Mon, Jan 12 from Pasco to St. Thomas, returning Thu, Jan 29, priced at $757 found 4 days ago
United
Sun, Nov 2 - Thu, Nov 6
PSC
Pasco
STT
St. Thomas
$761 Roundtrip, found 16 hours ago
$761
Roundtrip
found 16 hours ago
Select United flight, departing Sun, Nov 2 from Pasco to St. Thomas, returning Thu, Nov 6, priced at $761 found 16 hours ago
American Airlines
Mon, Jan 12 - Thu, Jan 29
PSC
Pasco
STT
St. Thomas
$762 Roundtrip, found 4 days ago
$762
Roundtrip
found 4 days ago
Select American Airlines flight, departing Mon, Jan 12 from Pasco to St. Thomas, returning Thu, Jan 29, priced at $762 found 4 days ago
Alaska Airlines
Wed, Jan 7 - Fri, Jan 16
PSC
Pasco
STT
St. Thomas
$792 Roundtrip, found 3 days ago
$792
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Wed, Jan 7 from Pasco to St. Thomas, returning Fri, Jan 16, priced at $792 found 3 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
$664
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 February. 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?
Lock in a cheap one-way flight from $343 or cheap return flight from $664 from Tri-Cities Airport (PSC) to Cyril E. King Airport (STT) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Tri-Cities Airport (PSC) to Cyril E. King Airport (STT)?
Planning your getaway for February may help you find better deals, as it's the cheapest month for flights between PSC and STT. You'll often find the lowest prices during the off-season.
What is the cheapest airline that flies from Tri-Cities Airport (PSC) to Cyril E. King Airport (STT)?
Use the filters on Expedia to compare different airlines and find the cheapest carrier that'll take you from PSC to STT. Then, sort your results by "Price (lowest to highest)" to score a good 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.

Explore a world of travel with Expedia

*Available to One Key members.