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Saint Thomas Island

$208+ 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 5/18. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — STT
May 10 — May 171
Sun 5/10
Sun 5/17
1 adult, Economy
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Cheap 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 April 10, 2026.

This United Airlines deal was found by Cheapflights users on 4/6. 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.
Tue 4/2110:55 pm
SEA
-
STT
1 stop11h 13m
United Airlines
Thu 4/302:10 pm
STT
-
SEA
1 stop12h 49m
United Airlines
Deal found 4/6$420
This American Airlines deal was found by Cheapflights users on 4/7. 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.
Wed 5/610:47 pm
SEA
-
STT
1 stop10h 48m
American Airlines
Wed 5/131:15 pm
STT
-
SEA
1 stop10h 49m
American Airlines
Deal found 4/7$425
This Delta deal was found by Cheapflights users on 4/8. 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.
Tue 5/54:36 pm
SEA
-
STT
2 stops18h 15m
Delta
Thu 5/141:16 pm
STT
-
SEA
1 stop13h 43m
Delta
Deal found 4/8$440
This American Airlines deal was found by Cheapflights users on 4/9. 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 4/1610:47 pm
SEA
-
STT
1 stop10h 48m
American Airlines
Mon 4/2012:25 pm
STT
-
SEA
1 stop14h 19m
American Airlines
Deal found 4/9$490
This American Airlines deal was found by Cheapflights users on 4/8. 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 4/1412:59 am
SEA
-
STT
2 stops12h 16m
American Airlines
Fri 4/2412:25 pm
STT
-
SEA
2 stops15h 11m
American Airlines
Deal found 4/8$495
This United Airlines deal was found by Cheapflights users on 4/7. 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.
Thu 5/711:59 pm
SEA
-
STT
1 stop12h 44m
United Airlines
Thu 5/141:22 pm
STT
-
SEA
1 stop12h 30m
United Airlines
Deal found 4/7$500
This United Airlines deal was found by Cheapflights users on 4/5. 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.
Sun 4/1911:59 pm
SEA
-
STT
1 stop12h 32m
United Airlines
Thu 4/232:10 pm
STT
-
SEA
1 stop13h 24m
United Airlines
Deal found 4/5$510
This United Airlines deal was found by Cheapflights users on 4/6. 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.
Mon 4/207:37 pm
SEA
-
STT
2 stops14h 31m
United Airlines
Fri 4/241:22 pm
STT
-
SEA
2 stops14h 12m
United Airlines
Deal found 4/6$518
This United Airlines deal was found by Cheapflights users on 4/8. 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.
Sun 5/37:05 pm
SEA
-
STT
2 stops14h 15m
United Airlines
Tue 5/121:22 pm
STT
-
SEA
1 stop12h 30m
United Airlines
Deal found 4/8$530

Find 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 April 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$420
(United Airlines)

One-way from

$208
(American Airlines)

Popular in

February

Cheapest in

May

Average price

$691
Provider with most accurate pricing for Seattle/Tacoma Intl-Saint Thomas Island Cyril E King flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Saint Thomas Island Cyril E King flights.
Search Deals
From Seattle/Tacoma Intl to Saint Thomas Island Cyril E King
Search Deals
One-way flight from Seattle/Tacoma Intl to Saint Thomas Island Cyril E King
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($44 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

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 April 10, 2026.
Use the filters below to find and compare flights from Seattle to Saint Thomas Island that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Wed 5/6

5:50 pm-12:06 pm

2 stops15h 16m

Saint Thomas Island Cyril E King

Wed 5/13

3:01 pm-11:59 pm

1 stop11h 58m

$420

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Thu 5/7

7:59 pm-12:06 pm

2 stops13h 07m

Saint Thomas Island Cyril E King

Thu 5/14

3:01 pm-11:59 pm

1 stop11h 58m

$440

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Thu 5/7

11:59 pm-3:43 pm

1 stop12h 44m

Saint Thomas Island Cyril E King

Wed 5/13

1:22 pm-10:52 pm

1 stop12h 30m

$530

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Sun 5/3

11:59 pm-3:43 pm

1 stop12h 44m

Saint Thomas Island Cyril E King

Fri 5/15

1:22 pm-10:59 pm

2 stops12h 37m

$530
Quickest round-trip

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Sat 5/9

10:41 pm-12:20 pm

1 stop10h 39m

Saint Thomas Island Cyril E King

Tue 5/12

1:22 pm-10:52 pm

1 stop12h 30m

$530

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Mon 5/18

7:36 pm-12:20 pm

2 stops13h 44m

Saint Thomas Island Cyril E King

Tue 5/26

4:45 pm-2:36 pm

2 stops24h 51m

$756

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Wed 6/10

10:45 pm-1:50 pm

2 stops12h 05m

Saint Thomas Island Cyril E King

Wed 6/17

2:35 pm-12:20 am

2 stops12h 45m

$780

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Tue 6/23

10:45 pm-1:45 pm

2 stops12h 00m

Saint Thomas Island Cyril E King

Tue 6/30

2:35 pm-12:20 am

2 stops12h 45m

$796

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Thu 6/11

10:45 pm-1:50 pm

2 stops12h 05m

Saint Thomas Island Cyril E King

Fri 6/19

2:45 pm-1:40 am

2 stops13h 55m

$796
Cheapest one-way

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Wed 6/10

7:41 pm-12:47 pm

3 stops38h 06m

$266

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/8

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

Compare providers for flights from Seattle to Saint Thomas Island

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Saint Thomas Island in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-Saint Thomas Island flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Saint Thomas Island flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Saint Thomas Island flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Saint Thomas Island flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Saint Thomas Island flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 April 3, 2026.

Booking 22 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, December is the cheapest month in which you can book a flight from Seattle to Saint Thomas Island (average of $269). Flying from Seattle to Saint Thomas Island in June is currently the most expensive (average of $499). 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.

How much does it cost to fly round-trip from Seattle to Saint Thomas Island?

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 April 10, 2026.
See what other customers who have flown with Delta,United Airlines, andAmerican 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
7.9
Good
8,398 reviews

Food

7.2

Crew

8.5

Boarding

8.1

Overall

7.9

Entertainment

7.8

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,398 reviews
Delta
7.9
Good
8,398 reviews

Food

7.2

Crew

8.5

Boarding

8.1

Overall

7.9

Entertainment

7.8

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,562 reviews
Delta
7.9
Good
8,398 reviews

Food

7.2

Crew

8.5

Boarding

8.1

Overall

7.9

Entertainment

7.8

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.1
Good
11,564 reviews
Delta
7.9
Good
8,398 reviews

Food

7.2

Crew

8.5

Boarding

8.1

Overall

7.9

Entertainment

7.8

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

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.

  • How long is the flight from Seattle to Saint Thomas Island?

    Departing from Seattle to Saint Thomas Island will take you 14h 16m. The distance between Seattle and Saint Thomas Island is about 3775 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Currently priced at $264, United Airlines will fly you from Seattle to Saint Thomas Island and back. In addition to United 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 $280 and $443, respectively. United Airlines is 57% 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, December is the cheapest month in which you can book a flight from Seattle to Saint Thomas Island (average of $269). Flying from Seattle to Saint Thomas Island in June is currently the most expensive (average of $499). 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

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Portland to Saint Thomas Island flights

Top 3 airlines flying from Seattle to Saint Thomas Island

Discover the top 3 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 April 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$264Average$645FlexibilityNo cancel feeOn-time69%
DeltaCheapest$280Average$556FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$443Average$647FlexibilityNo cancel feeOn-time71%

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