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Saint Thomas Island

$218+ 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
Jun 3 — Jun 101
Wed 6/3
Wed 6/10
1 adult, Economy
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Find cheap flights from Seattle to Saint Thomas Island with Cheapflights

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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 May 4, 2026.

This United Airlines deal was found by Cheapflights users on 4/29. 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.
Sat 10/247:28 pm
SEA
-
STT
2 stops15h 02m
United Airlines
Fri 10/3012:02 pm
STT
-
SEA
2 stops15h 12m
United Airlines
Deal found 4/29$440
This United Airlines deal was found by Cheapflights users on 4/29. 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.
Sat 10/2411:59 pm
SEA
-
STT
1 stop10h 31m
United Airlines
Tue 10/2712:02 pm
STT
-
SEA
1 stop11h 08m
United Airlines
Deal found 4/29$530
This United Airlines deal was found by Cheapflights users on 4/29. 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 12/155:30 pm
SEA
-
STT
2 stops14h 30m
United Airlines
Mon 12/213:05 pm
STT
-
SEA
1 stop13h 09m
United Airlines
Deal found 4/29$548
This United Airlines deal was found by Cheapflights users on 5/2. 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 11/137:10 pm
SEA
-
STT
2 stops12h 50m
United Airlines
Sun 11/221:02 pm
STT
-
SEA
2 stops13h 57m
United Airlines
Deal found 5/2$552
This United Airlines deal was found by Cheapflights users on 4/30. 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 5/106:58 pm
SEA
-
STT
2 stops17h 45m
United Airlines
Thu 5/142:10 pm
STT
-
SEA
1 stop12h 49m
United Airlines
Deal found 4/30$555
This American Airlines deal was found by Cheapflights users on 4/29. 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 5/278:45 pm
SEA
-
STT
1 stop12h 59m
American Airlines
Tue 6/21:34 pm
STT
-
SEA
1 stop13h 34m
American Airlines
Deal found 4/29$557
This American Airlines deal was found by Cheapflights users on 4/30. 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 12/110:08 pm
SEA
-
STT
1 stop13h 17m
American Airlines
Tue 12/152:49 pm
STT
-
SEA
2 stops14h 06m
American Airlines
Deal found 4/30$584
This American Airlines deal was found by Cheapflights users on 5/2. 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 8/191:00 pm
SEA
-
STT
1 stop20h 52m
American Airlines
Fri 8/281:49 pm
STT
-
SEA
1 stop13h 31m
American Airlines
Deal found 5/2$589
This United Airlines deal was found by Cheapflights users on 4/29. 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 10/257:10 pm
SEA
-
STT
2 stops12h 50m
United Airlines
Fri 10/3012:02 pm
STT
-
SEA
1 stop11h 08m
United Airlines
Deal found 4/29$602

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 May 4, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$440
(United Airlines)

One-way from

$218
(Delta)

Popular in

February

Cheapest in

May

Average price

$443
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 ($40 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 May 4, 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
Quickest round-trip

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Sat 10/24

11:59 pm-1:30 pm

1 stop10h 31m

Saint Thomas Island Cyril E King

Fri 10/30

12:02 pm-8:10 pm

1 stop11h 08m

$440

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Tue 10/27

7:10 pm-11:00 am

2 stops12h 50m

Saint Thomas Island Cyril E King

Fri 10/30

12:02 pm-8:10 pm

1 stop11h 08m

$530

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Wed 8/19

1:00 pm-12:52 pm

1 stop20h 52m

Saint Thomas Island Cyril E King

Fri 8/28

1:49 pm-12:20 am

1 stop13h 31m

$589

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Sat 10/24

11:59 pm-1:30 pm

1 stop10h 31m

Saint Thomas Island Cyril E King

Sat 10/31

2:05 pm-10:29 pm

1 stop11h 24m

$602

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Sun 10/25

6:50 am-11:00 am

1 stop25h 10m

Saint Thomas Island Cyril E King

Sat 10/31

12:02 pm-8:10 pm

1 stop11h 08m

$620

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Sun 10/25

6:50 am-11:00 am

1 stop25h 10m

Saint Thomas Island Cyril E King

Wed 10/28

12:02 pm-8:10 pm

1 stop11h 08m

$620

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Tue 10/27

6:50 am-11:00 am

1 stop25h 10m

Saint Thomas Island Cyril E King

Sat 10/31

12:02 pm-8:10 pm

1 stop11h 08m

$620

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Fri 5/15

7:05 pm-12:20 pm

2 stops14h 15m

Saint Thomas Island Cyril E King

Tue 5/19

1:22 pm-10:52 pm

1 stop12h 30m

$636

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Sat 5/16

7:36 pm-12:20 pm

2 stops13h 44m

Saint Thomas Island Cyril E King

Wed 5/20

1:22 pm-10:59 pm

2 stops12h 37m

$636
Cheapest one-way

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Mon 5/18

5:45 pm-12:06 pm

2 stops15h 21m

$218

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/1

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 May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 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?

Booking 21 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, May is the cheapest month in which you can book a flight from Seattle to Saint Thomas Island (average of $443). Flying from Seattle to Saint Thomas Island in February is currently the most expensive (average of $765). 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 May 4, 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
8,460 reviews

Entertainment

7.8

Boarding

8.1

Crew

8.5

Food

7.2

Overall

7.9

Comfort

7.9

Reviews

1 / 20
4.0
Okay

Joel,May 2026

ATL - JAX

The flight was delivered 50 minutes and taxing took what felt like 20 minutes to takeoff.
Delta
7.9
Good
8,460 reviews
Delta
7.9
Good
8,460 reviews

Entertainment

7.8

Boarding

8.1

Crew

8.5

Food

7.2

Overall

7.9

Comfort

7.9

Reviews

1 / 20
4.0
Okay

Joel,May 2026

ATL - JAX

The flight was delivered 50 minutes and taxing took what felt like 20 minutes to takeoff.
United Airlines
7.4
Good
9,680 reviews
Delta
7.9
Good
8,460 reviews

Entertainment

7.8

Boarding

8.1

Crew

8.5

Food

7.2

Overall

7.9

Comfort

7.9

Reviews

1 / 20
4.0
Okay

Joel,May 2026

ATL - JAX

The flight was delivered 50 minutes and taxing took what felt like 20 minutes to takeoff.
American Airlines
7.1
Good
11,673 reviews
Delta
7.9
Good
8,460 reviews

Entertainment

7.8

Boarding

8.1

Crew

8.5

Food

7.2

Overall

7.9

Comfort

7.9

Reviews

1 / 20
4.0
Okay

Joel,May 2026

ATL - JAX

The flight was delivered 50 minutes and taxing took what felt like 20 minutes to takeoff.

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 10h 31m. 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 $310 and $473, 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, May is the cheapest month in which you can book a flight from Seattle to Saint Thomas Island (average of $443). Flying from Seattle to Saint Thomas Island in February is currently the most expensive (average of $765). 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.
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 May 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$264Average$600FlexibilityNo cancel feeOn-time69%
DeltaCheapest$310Average$542FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$473Average$677FlexibilityNo cancel feeOn-time71%

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