£268 Cheap Flights from Seattle (SEA) to St. Thomas (STT)

View £268 flight on Wed, 13 Aug 2025Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) 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 25% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Seattle (SEA) to St. Thomas (STT)

Prices were available within the past 7 days and start at £268 for one-way flights and £511 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Thu, 14 Aug - Fri, 22 Aug
SEA
Seattle
STT
St. Thomas
£511 Return, found 3 days ago
£511
Return
found 3 days ago
Select American Airlines flight, departing Thu, 14 Aug from Seattle to St. Thomas, returning Fri, 22 Aug, priced at £511 found 3 days ago
American Airlines
Wed, 13 Aug - Fri, 22 Aug
SEA
Seattle
STT
St. Thomas
£528 Return, found 3 days ago
£528
Return
found 3 days ago
Select American Airlines flight, departing Wed, 13 Aug from Seattle to St. Thomas, returning Fri, 22 Aug, priced at £528 found 3 days ago
American Airlines
Sun, 10 Aug - Fri, 22 Aug
SEA
Seattle
STT
St. Thomas
£531 Return, found 3 days ago
£531
Return
found 3 days ago
Select American Airlines flight, departing Sun, 10 Aug from Seattle to St. Thomas, returning Fri, 22 Aug, priced at £531 found 3 days ago
American Airlines
Thu, 14 Aug - Mon, 18 Aug
SEA
Seattle
STT
St. Thomas
£603 Return, found 3 days ago
£603
Return
found 3 days ago
Select American Airlines flight, departing Thu, 14 Aug from Seattle to St. Thomas, returning Mon, 18 Aug, priced at £603 found 3 days ago
American Airlines
Wed, 13 Aug - Mon, 18 Aug
SEA
Seattle
STT
St. Thomas
£620 Return, found 3 days ago
£620
Return
found 3 days ago
Select American Airlines flight, departing Wed, 13 Aug from Seattle to St. Thomas, returning Mon, 18 Aug, priced at £620 found 3 days ago
American Airlines
Sun, 10 Aug - Mon, 18 Aug
SEA
Seattle
STT
St. Thomas
£624 Return, found 3 days ago
£624
Return
found 3 days ago
Select American Airlines flight, departing Sun, 10 Aug from Seattle to St. Thomas, returning Mon, 18 Aug, priced at £624 found 3 days ago
United
Wed, 13 Aug - Wed, 20 Aug
SEA
Seattle
STT
St. Thomas
£720 Return, found 3 days ago
£720
Return
found 3 days ago
Select United flight, departing Wed, 13 Aug from Seattle to St. Thomas, returning Wed, 20 Aug, priced at £720 found 3 days ago
Alaska Airlines
Wed, 13 Aug - Wed, 20 Aug
SEA
Seattle
STT
St. Thomas
£798 Return, found 3 days ago
£798
Return
found 3 days ago
Select Alaska Airlines flight, departing Wed, 13 Aug from Seattle to St. Thomas, returning Wed, 20 Aug, priced at £798 found 3 days ago
JetBlue Airways
Wed, 13 Aug - Wed, 20 Aug
SEA
Seattle
STT
St. Thomas
£877 Return, found 3 days ago
£877
Return
found 3 days ago
Select JetBlue Airways flight, departing Wed, 13 Aug from Seattle to St. Thomas, returning Wed, 20 Aug, priced at £877 found 3 days ago
Delta
Tue, 12 Aug - Wed, 20 Aug
SEA
Seattle
STT
St. Thomas
£1,048 Return, found 3 days ago
£1,048
Return
found 3 days ago
Select Delta flight, departing Tue, 12 Aug from Seattle to St. Thomas, returning Wed, 20 Aug, priced at £1,048 found 3 days ago

Find the cheapest month to fly from Seattle (SEA) to St. Thomas (STT)

September is typically the cheapest month to fly

From £175 - £528 per traveller.

Graph displaying average flight prices per month

Flight from Seattle to St. Thomas route information
Origin airport
Seattle - Tacoma Intl.
Destination airport
Cyril E. King
Return price
£511
Distance
6043 km

Compare flights from Seattle to St. Thomas easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Seattle to St. Thomas. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Cyril E. King in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Seattle - Tacoma Intl. to Cyril E. King.  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Seattle - Tacoma Intl. (SEA) to Cyril E. King (STT)

The easiest way to view the best deals on flights from Seattle to St. Thomas today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Seattle - Tacoma Intl. to Cyril E. King start at just £511 and range up to £1,048.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Seattle and St. Thomas
  • booking your flight during August, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Seattle to St. Thomas flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Seattle - Tacoma Intl. to Cyril E. King for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Frequently asked questions

How much is a flight from Sea-Tac Airport to Cyril E. King Airport?
Round-trip tickets between SEA and Cyril E. King Airport (STT) start from £511. This figure is based on fares available within the last 7 days on Expedia for flights departing within the next year — make your booking ASAP so you don't miss out. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from SEA to Cyril E. King Airport (STT)?
Every air carrier has its own terms and conditions. If you do decide to cancel, follow the easy instructions on our Customer Service Portal.
How do I find cheap flights from Sea-Tac Airport to STT that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for SEA to Cyril E. King Airport (STT) flights, you'll see a "no change fees" filter for you to select.
How far is the flight from SEA to Cyril E. King Airport (STT)?
You'll have 6,100 kilometres to cover on the long-haul SeaTac to St. Thomas route. Dress in comfy clothes and consider taking some noise-cancelling headphones and a sleep mask.
Which airlines fly direct from SEA to Cyril E. King Airport (STT)?
At the moment, no airlines offer direct flights from Seattle - Tacoma Intl. Airport (SEA) to STT. You'll need to book a flight with at least one stop. To score the best price and connections, lock in your airfare well in advance.
Are Seattle - Tacoma Intl. Airport (SEA) to Cyril E. King Airport flight tickets cheaper when they're purchased at the last minute?
Last-minute bookings from Sea-Tac Airport to STT can be hit-or-miss. You may be able to score a great bargain, but then again, you could miss out altogether! If you'd rather play it safe and start planning your trip ahead of time, Expedia compares flight deals up to 12 months in advance. Just remember that not all airlines list their prices so far in advance. Our top tip? Check back often as prices are updated frequently.

Explore a world of travel with Expedia

*Available to Expedia members.