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

Currently priced at $312, 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 American Airlines and Delta - these airlines can fly you to your destination from $527 and $673, respectively. Spirit Airlines is 58% cheaper than the average price of flights available within the next 90 days to this destination.

What is the cheapest day to fly from Seattle to Saint Thomas Island?

Travelers seeking maximum savings on their Seattle to Saint Thomas Island flight should consider departing on Tuesday at noon when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

What are the most popular airlines that fly from Seattle to Saint Thomas Island?

Before booking your flight from Seattle to Saint Thomas Island check out the most popular airlines for this route: American Airlines, Delta or Spirit Airlines.

What is the cheapest day to fly round-trip from Seattle to Saint Thomas Island?

Wednesday flights are generally found to be more expensive for flights from Seattle to Saint Thomas Island. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Saint Thomas Island.

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

Find a great deal and save up to 277% by booking at least 59 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Seattle to Saint Thomas Island within the next two weeks, with the cheapest ticket starting at $735.

What is the cheapest month to fly from Seattle to Saint Thomas Island?

September is one of the best times of the year to fly to Saint Thomas Island from Seattle. Prices for September average $752 per person but you can even find prices for as low as $345. The most expensive prices can be found in the month of December. Opting for a September flight can save you 39% on your journey compared to booking in December

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.

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.

$304+ Save on Flights from Seattle to Saint Thomas Island

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1. Tell us where you want to go

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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.

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

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

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$312 (Mytrip)
Popular in	December
Cheapest in	September
Average price	$779

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.

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From Seattle/Tacoma Intl to Saint Thomas Island Cyril E King

Search Deals

Highest demand for flights based on searches. 7% potential increase in price ($58 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($27 potential savings vs. average RT price).

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Average for round-trip flights in March 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 March 3, 2025.

Thu 4/1712:30 pmSEA - STT

2 stops18h 30mSpirit Airlines

Thu 4/2411:05 amSTT - SEA

2 stops27h 30mSpirit Airlines

Deal found 3/3

$304

Thu 4/177:55 amSEA - STT

1 stop23h 05mMultiple Airlines

Thu 4/2411:05 amSTT - SEA

1 stop13h 55mMultiple Airlines

Deal found 3/3

$459

Sun 8/3110:58 pmSEA - STT

1 stop10h 52mAmerican Airlines

Mon 9/85:20 pmSTT - SEA

2 stops20h 24mAmerican Airlines

Deal found 3/2

$527

Wed 6/117:27 pmSEA - STT

2 stops17h 16mUnited Airlines

Wed 6/184:45 pmSTT - SEA

1 stop11h 14mUnited Airlines

Deal found 3/2

$663

Sun 4/2712:45 amSEA - STT

2 stops11h 20mDelta

Sun 5/112:51 pmSTT - SEA

2 stops12h 08mDelta

Deal found 3/2

$673

Best flights from Seattle to Saint Thomas Island
Discover carefully curated flight deals from Seattle to Saint Thomas Island that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 3, 2025.

Wed 4/2312:30 pmSEA - STT

2 stops18h 30mSpirit Airlines

Wed 5/711:51 amSTT - SEA

2 stops27h 51mSpirit Airlines

Deal found 3/2

$312

Fri 4/411:59 pmSEA - STT

3 stops29h 56mMultiple Airlines

Thu 4/1011:05 amSTT - SEA

2 stops27h 30mMultiple Airlines

Deal found 3/2

$490

Sat 4/267:02 pmSEA - STT

2 stops12h 38mAmerican Airlines

Wed 5/145:10 pmSTT - SEA

2 stops19h 13mAmerican Airlines

Deal found 3/3

$527

Sun 4/2712:45 amSEA - STT

2 stops11h 20mDelta

Sun 5/112:51 pmSTT - SEA

2 stops12h 08mDelta

Deal found 3/2

$673

Wed 4/2311:45 pmSEA - STT

2 stops12h 58mUnited Airlines

Wed 5/74:45 pmSTT - SEA

2 stops24h 15mUnited Airlines

Deal found 3/2

$694

Last-minute flights from Seattle to Saint Thomas Island
Discover last-minute flight deals from Seattle to Saint Thomas Island. Data last updated March 3, 2025 and is based on user searches.

Thu 4/1712:30 pmSEA - STT

2 stops18h 30mSpirit Airlines

Thu 4/2411:05 amSTT - SEA

2 stops27h 30mSpirit Airlines

Deal found 3/3

$304

Thu 4/177:55 amSEA - STT

1 stop23h 05mMultiple Airlines

Thu 4/2411:05 amSTT - SEA

1 stop13h 55mMultiple Airlines

Deal found 3/3

$459

Wed 4/2311:45 pmSEA - STT

2 stops12h 58mUnited Airlines

Wed 5/74:45 pmSTT - SEA

2 stops24h 15mUnited Airlines

Deal found 3/2

$694

Sat 4/267:02 pmSEA - STT

2 stops12h 38mAmerican Airlines

Wed 5/145:10 pmSTT - SEA

2 stops19h 13mAmerican Airlines

Deal found 3/3

$527

Sun 4/2712:45 amSEA - STT

2 stops11h 20mDelta

Sun 5/112:51 pmSTT - SEA

2 stops12h 08mDelta

Deal found 3/2

$673

One-way flights from Seattle to Saint Thomas Island
Search for one-way flight options from Seattle to Saint Thomas Island. Find affordable one-way fares based on user searches. Data last updated March 3, 2025.

Sat 3/1511:59 pmSEA - STT

1 stop12h 34mUnited Airlines

Deal found 3/2

$962

Fri 3/1412:59 amSEA - STT

2 stops12h 32mAmerican Airlines

Deal found 3/2

$3,021

Find flights from Seattle to Saint Thomas Island within your budget

Fly from

Fly to

Route

Depart

Return

Price

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Thu 4/17

12:30 pm-10:00 am

2 stops18h 30m

Saint Thomas Island Cyril E King

Thu 4/24

11:05 am-11:35 am

2 stops27h 30m

$304

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Thu 4/17

7:55 am-10:00 am

1 stop23h 05m

Saint Thomas Island Cyril E King

Thu 4/24

11:05 am-10:00 pm

1 stop13h 55m

$459

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Sat 4/26

1:35 pm-10:40 am

1 stop18h 05m

Saint Thomas Island Cyril E King

Wed 5/14

5:10 pm-9:23 am

2 stops19h 13m

$527

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Sun 4/27

12:45 am-3:05 pm

2 stops11h 20m

Saint Thomas Island Cyril E King

Sun 5/11

2:51 pm-11:59 pm

2 stops12h 08m

$673

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Wed 4/23

11:45 pm-3:43 pm

2 stops12h 58m

Saint Thomas Island Cyril E King

Wed 5/7

4:45 pm-2:00 pm

2 stops24h 15m

$694

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Sat 3/15

11:59 pm-3:33 pm

1 stop12h 34m

$962

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Fri 3/14

12:59 am-1:45 pm

1 stop9h 46m

$3,021

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/2

Compare providers for flights from Seattle to Saint Thomas Island

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 March.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
AranGrant	Price Accuracy3 stars	Trust Score*1 star
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust 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.

Travel insights for flights from Seattle to Saint Thomas Island

Get recent, data-driven insights about flights from Seattle to Saint Thomas Island including ideal travel times, pricing trends, and more.

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

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 $654). 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?

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

Delta

8.0

Very good

8,070 reviews

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

8,070 reviews

Delta

8.0

Very good

8,070 reviews

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

8,679 reviews

Delta

8.0

Very good

8,070 reviews

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

8,070 reviews

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

7,940 reviews

Delta

8.0

Very good

8,070 reviews

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

What are the cheapest airlines flying from Seattle to Saint Thomas Island round-trip?
Currently priced at $312, 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 American Airlines and Delta - these airlines can fly you to your destination from $527 and $673, respectively. Spirit Airlines is 58% 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 $654). 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

St. John

Browse thousands of different options on Cheapflights for your next trip

Top 4 airlines flying from Seattle to Saint Thomas Island

Airline	Cheapest	Average	Flexibility	On-time
Spirit Airlines	Cheapest$199	Average$496	FlexibilityNo cancel fee	On-time65%
Delta	Cheapest$443	Average$800	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$496	Average$760	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$539	Average$740	FlexibilityNo cancel fee	On-time69%

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$304+ Cheap flights from Seattle (SEA) to Saint Thomas Island (STT)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/17. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Seattle to Saint Thomas Island with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

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

Most accurate provider

Most trusted provider

Round-trip from

Popular in

Cheapest in

Average price

Find flight deals from Seattle to Saint Thomas Island

Cheapest flights from Seattle to Saint Thomas IslandExplore 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 March 3, 2025.

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 March 3, 2025.

Find flights from Seattle to Saint Thomas Island within your budget

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 March.

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.

Travel insights for flights from Seattle to Saint Thomas Island

Get recent, data-driven insights about flights from Seattle to Saint Thomas Island including ideal travel times, pricing trends, and more.

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 February 28, 2025.

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

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 March 3, 2025.

Reviews of airlines servicing Saint Thomas Island

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?

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

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

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

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

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Top 4 airlines flying from Seattle to Saint Thomas Island

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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 March 3, 2025.