HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Saint Thomas Island

$199+ 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 6/12. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — STT
may. 4 — may. 111
dom. 5/4
dom. 5/11
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Seattle to Saint Thomas Island with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Saint Thomas Island Cyril E King are usually found in September or October, 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 abril 29, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$394
(Mytrip)

One-way from

$199
(Flightnetwork)

Popular in

December

Cheapest in

September

Average price

$770
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. 11% potential increase in price ($90 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

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 abril 29, 2025.

This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 6/43:20 pmSEA - STT
2 stops15h 37mSpirit Airlines
jue. 6/1210:47 amSTT - SEA
2 stops31h 16mSpirit Airlines
Deal found 4/29$394
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 6/1110:58 pmSEA - STT
1 stop10h 16mDelta
mié. 6/181:24 pmSTT - SEA
2 stops13h 29mDelta
Deal found 4/29$483
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.
sáb. 8/3012:34 amSEA - STT
2 stops12h 24mAmerican Airlines
lun. 9/84:50 pmSTT - SEA
2 stops20h 06mAmerican Airlines
Deal found 4/29$525
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.
mar. 7/85:10 pmSEA - STT
2 stops16h 07mUnited Airlines
dom. 7/134:45 pmSTT - SEA
1 stop11h 11mUnited Airlines
Deal found 4/29$622
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 7/83:58 pmSEA - STT
2 stops20h 39mMultiple Airlines
dom. 7/139:40 amSTT - SEA
3 stops34h 10mMultiple Airlines
Deal found 4/29$740

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 abril 29, 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

mié. 6/4

3:20 pm-9:57 am

2 stops15h 37m

Saint Thomas Island Cyril E King

jue. 6/12

10:47 am-3:03 pm

2 stops31h 16m

$394

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

mié. 6/11

10:58 pm-12:14 pm

1 stop10h 16m

Saint Thomas Island Cyril E King

mié. 6/18

1:24 pm-11:53 pm

2 stops13h 29m

$483

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

sáb. 8/30

12:34 am-3:58 pm

2 stops12h 24m

Saint Thomas Island Cyril E King

lun. 9/8

4:50 pm-9:56 am

2 stops20h 06m

$525

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

mar. 7/8

5:10 pm-12:17 pm

2 stops16h 07m

Saint Thomas Island Cyril E King

dom. 7/13

4:45 pm-12:56 am

1 stop11h 11m

$622

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

mar. 7/8

3:58 pm-3:37 pm

2 stops20h 39m

Saint Thomas Island Cyril E King

dom. 7/13

9:40 am-4:50 pm

3 stops34h 10m

$740

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

sáb. 6/21

3:58 pm-9:48 am

2 stops14h 50m

$212

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

sáb. 6/21

10:58 pm-12:14 pm

1 stop10h 16m

$240

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

vie. 6/20

11:21 pm-1:08 pm

1 stop10h 47m

$335

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

jue. 6/19

12:05 am-4:00 pm

2 stops12h 55m

$443

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

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
AranGrantPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice 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 AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Seattle-Saint Thomas Island flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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 25, 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 $432). Flying from Seattle to Saint Thomas Island in June is currently the most expensive (average of $627). 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 abril 29, 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 abril 29, 2025.
Read reviews from past customers who have flown Delta, United Airlines and American Airlines from Seattle to Saint Thomas Island. 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
7,929 reviews

Food

7.3

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,929 reviews
Delta
8.0
Very good
7,929 reviews

Food

7.3

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,696 reviews
Delta
8.0
Very good
7,929 reviews

Food

7.3

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,929 reviews

Food

7.3

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Spirit Airlines
6.3
Okay
7,956 reviews
Delta
8.0
Very good
7,929 reviews

Food

7.3

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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 $394, 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 $443 and $525, respectively. Spirit Airlines is 44% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Seattle to Saint Thomas Island one-way?

    The cheapest airline one-way is Spirit Airlines, with whom users have recently found tickets for as low as $199. However, be on the lookout for offers from United Airlines and Delta, as they are both options that can get you from Seattle to Saint Thomas Island for a low price.

  • 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 $432). Flying from Seattle to Saint Thomas Island in June is currently the most expensive (average of $627). 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 Seattle?

Book flights to Seattle if you plan to visit one of these locations
St. John

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 abril 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$199Average$479FlexibilityNo cancel feeOn-time65%
DeltaCheapest$352Average$766FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$443Average$714FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$539Average$705FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.