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Saint Thomas Island

$235+ Cheap flights from Seattle (SEA) to Saint Thomas Island (STT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/23. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — STT
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Saint Thomas Island Cyril E King are usually found in January or September, booked 58 days in advance, depart on a Tuesday or Monday and return on a Friday

Cheap flight deals from Seattle to Saint Thomas Island

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Saint Thomas Island (STT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 14, 2025.

Round-trip from

$473
(United Airlines)

One-way from

$235
(American Airlines)

Popular in

December

Cheapest in

January

Average price

$747
From Seattle/Tacoma Intl to Saint Thomas Island Cyril E King
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One-way flight from Seattle/Tacoma Intl to Saint Thomas Island Cyril E King
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Highest demand for flights based on searches. 2% potential increase in price ($16 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($23 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Seattle to Saint Thomas Island

Cheapest flights from Seattle to Saint Thomas Island
Explore the most affordable flight options available from Seattle to Saint Thomas Island. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

This United Airlines deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/147:13 pmSEA - STT
2 stops14h 43mUnited Airlines
Tue 11/181:02 pmSTT - SEA
1 stop11h 52mUnited Airlines
Deal found 8/14$473
This Trip.com deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/248:37 amSEA - STT
1 stop22h 07mMultiple Airlines
Sun 9/2810:49 amSTT - SEA
1 stop14h 33mMultiple Airlines
Deal found 8/13$479
This American Airlines deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1111:49 pmSEA - STT
2 stops13h 11mAmerican Airlines
Thu 9/185:10 pmSTT - SEA
2 stops20h 40mAmerican Airlines
Deal found 8/13$518
This United Airlines deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/125:14 pmSEA - STT
2 stops14h 54mUnited Airlines
Sat 9/2012:10 pmSTT - SEA
2 stops13h 10mUnited Airlines
Deal found 8/13$563
This Delta deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/197:05 pmSEA - STT
2 stops16h 40mDelta
Fri 9/262:43 pmSTT - SEA
2 stops12h 16mDelta
Deal found 8/12$573
This American Airlines deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2111:20 pmSEA - STT
2 stops13h 45mAmerican Airlines
Tue 10/2812:40 pmSTT - SEA
2 stops14h 47mAmerican Airlines
Deal found 8/13$602
This United Airlines deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/197:13 pmSEA - STT
2 stops12h 47mUnited Airlines
Sun 11/233:35 pmSTT - SEA
1 stop11h 11mUnited Airlines
Deal found 8/14$613
This Delta deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1211:20 pmSEA - STT
1 stop12h 25mDelta
Tue 9/162:43 pmSTT - SEA
1 stop12h 11mDelta
Deal found 8/13$618
This American Airlines deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/288:08 pmSEA - STT
1 stop16h 52mAmerican Airlines
Tue 9/91:40 pmSTT - SEA
2 stops22h 39mAmerican Airlines
Deal found 8/13$642
This United deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/125:35 pmSEA - STT
2 stops16h 26mMultiple Airlines
Fri 9/1911:15 amSTT - SEA
2 stops13h 51mMultiple Airlines
Deal found 8/13$646
This Delta deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/1411:20 pmSEA - STT
1 stop11h 13mDelta
Tue 9/162:43 pmSTT - SEA
1 stop12h 11mDelta
Deal found 8/13$663

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Saint Thomas Island 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, Cheapflights users made 2,558,603 searches. Data last updated August 14, 2025.
Use the filters below to find and compare flights from Seattle to Saint Thomas Island that are best for you.

Fly from

Seattle

Fly to

Saint Thomas Island

Route

Depart

Return

Price

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Fri 11/14

11:59 pm-4:18 pm

1 stop12h 19m

Saint Thomas Island Cyril E King

Tue 11/18

1:02 pm-8:54 pm

1 stop11h 52m

$473

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Fri 9/19

8:51 pm-4:00 pm

1 stop16h 09m

Saint Thomas Island Cyril E King

Fri 9/26

1:40 pm-11:59 pm

1 stop13h 19m

$473

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Mon 1/5

12:27 am-5:25 pm

2 stops12h 58m

Saint Thomas Island Cyril E King

Wed 1/14

6:35 pm-9:36 am

2 stops19h 01m

$473

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Tue 10/21

11:49 pm-12:00 pm

1 stop9h 11m

Saint Thomas Island Cyril E King

Tue 10/28

5:20 pm-12:50 pm

2 stops22h 30m

$473

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Tue 1/6

12:27 am-5:25 pm

2 stops12h 58m

Saint Thomas Island Cyril E King

Wed 1/14

6:35 pm-9:36 am

2 stops19h 01m

$473

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Sun 1/4

9:55 pm-1:36 pm

1 stop11h 41m

$235

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Thu 10/23

11:56 pm-12:00 pm

1 stop9h 04m

$235

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Mon 1/5

4:55 pm-1:45 pm

2 stops16h 50m

$235

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Tue 1/6

9:55 pm-1:45 pm

1 stop11h 50m

$235

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Sat 1/10

7:33 pm-1:45 pm

2 stops14h 12m

$235

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/12

Showing 1-10 of 13 results
1
2

Best time to book a flight from Seattle to Saint Thomas Island

Have a flexible travel schedule? Discover the best time to fly to Saint Thomas Island from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Saint Thomas Island

How far ahead should I book a flight from Seattle to Saint Thomas Island?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Saint Thomas Island. Price data was last updated on August 8, 2025.

Booking 58 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Saint Thomas Island. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Seattle to Saint Thomas Island?

Currently, September is the cheapest month in which you can book a flight from Seattle to Saint Thomas Island (average of $433). Flying from Seattle to Saint Thomas Island in June is currently the most expensive (average of $648). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SEA to STT?

Find hourly flight availability from Seattle to Saint Thomas Island. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 14, 2025.

It’s typically best to fly out from Seattle to Saint Thomas Island in the afternoon. Doing so could potentially save you 52% on the flight price compared to flying in the evening, which is usually more expensive.

Reviews of airlines servicing Saint Thomas Island

Get insights into the airlines that provide service to Saint Thomas Island. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Saint Thomas Island. Reviews last updated August 14, 2025.
See what other customers who have flown with Delta, United Airlines, and American Airlines from Seattle to Saint Thomas Island have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,980 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,916 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Spirit Airlines
6.3
Okay
8,046 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Seattle to Saint Thomas Island. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Seattle to Saint Thomas Island round-trip?

    Currently priced at $199, Spirit Airlines will fly you from Seattle to Saint Thomas Island and back. In addition to Spirit Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and American Airlines - these airlines can fly you to your destination from $310 and $443, respectively. Spirit Airlines is 71% cheaper than the average price of flights available within the next 90 days to this destination.

  • Can I find deals for flights from Seattle to Saint Thomas Island that include hotel bookings?

    Yes. In addition to deals on Seattle to Saint Thomas Island flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Saint Thomas Island?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Saint Thomas Island.

  • Can I find deals for business class flights from Seattle to Saint Thomas Island?

    Yes. Cheapflights offers flight deals from Seattle to Saint Thomas Island by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Saint Thomas Island?

    Currently, September is the cheapest month in which you can book a flight from Seattle to Saint Thomas Island (average of $433). Flying from Seattle to Saint Thomas Island in June is currently the most expensive (average of $648). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Saint Thomas Island?

Book flights to Saint Thomas Island if you plan to visit one of these locations
St. John

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Alternative routes for Seattle to Saint Thomas Island

See prices for flight routes from nearby airports that may be better suited for you.
Seattle to Christiansted flights
Portland to Saint Thomas Island flights
Portland to Christiansted flights

Top 4 airlines flying from Seattle to Saint Thomas Island

Discover the top 4 airlines that operate flights from Seattle to Saint Thomas Island. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$199Average$479FlexibilityNo cancel feeOn-time65%
DeltaCheapest$310Average$677FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$443Average$695FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$495Average$694FlexibilityNo cancel feeOn-time69%

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