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Cheap flights from Seattle to Saint Thomas Island from $278

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Saint Thomas Island departing on 12/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap round-trip flights

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Delta Logo
10:55 pm - 12:42 pmSEA-STT
9h 47m1 stop
Delta Logo
4:15 pm - 10:50 pmSTT-SEA
10h 35m1 stop
$473Delta
Find Deal
ter, jan 6 - sex, jan 16
American Airlines Logo
11:12 pm - 5:05 pmSEA-STT
13h 53m2 stops
American Airlines Logo
4:47 pm - 9:37 amSTT-SEA
20h 50m2 stops
$511American Airlines
Find Deal
qui, jan 29 - dom, fev 8
American Airlines Logo
12:38 am - 4:58 pmSEA-STT
12h 20m2 stops
American Airlines Logo
4:16 pm - 11:16 pmSTT-SEA
11h 00m1 stop
$534American Airlines
Find Deal
qua, dez 10 - qua, dez 17
United Airlines Logo
5:10 pm - 12:00 pmSEA-STT
14h 50m2 stops
United Airlines Logo
1:02 pm - 10:43 pmSTT-SEA
13h 41m2 stops
$537United Airlines
Find Deal
ter, jan 6 - sex, jan 16
American Airlines Logo
12:38 am - 4:58 pmSEA-STT
12h 20m2 stops
American Airlines Logo
6:17 pm - 11:30 amSTT-SEA
21h 13m1 stop
$561American Airlines
Find Deal
qua, dez 10 - qua, dez 17
American Airlines Logo
10:07 pm - 11:43 amSEA-STT
9h 36m1 stop
American Airlines Logo
6:17 pm - 9:42 amSTT-SEA
19h 25m2 stops
$597American Airlines
Find Deal
seg, nov 24 - qua, dez 3
United Airlines Logo
5:10 pm - 12:00 pmSEA-STT
14h 50m2 stops
United Airlines Logo
5:25 pm - 8:57 pmSTT-SEA
31h 32m2 stops
$624United Airlines
Find Deal
ter, jan 6 - qua, jan 14
American Airlines Logo
12:42 pm - 11:43 amSEA-STT
19h 01m1 stop
American Airlines Logo
4:16 pm - 11:16 pmSTT-SEA
11h 00m1 stop
$635American Airlines
Find Deal
seg, nov 24 - qua, dez 3
United Airlines Logo
5:10 pm - 1:56 pmSEA-STT
16h 46m2 stops
United Airlines Logo
1:02 pm - 10:43 pmSTT-SEA
13h 41m2 stops
$646United Airlines
Find Deal
ter, jan 6 - sex, jan 16
Delta Logo
11:00 pm - 3:40 pmSEA-STT
12h 40m1 stop
Delta Logo
3:50 pm - 11:59 pmSTT-SEA
12h 09m1 stop
$975Delta
Find Deal
sex, nov 14 - qua, nov 19

American Airlines flights from Seattle to Saint Thomas Island

Our best American Airlines deals on Seattle to Saint Thomas Island flight tickets
American Airlines
Jan 29
SEA11:12 pmSeattle/Tacoma Intl
13h 53m
2 stops
STT5:05 pmSaint Thomas Island Cyril E King
Feb 8
STT4:47 pmSaint Thomas Island Cyril E King
20h 50m
2 stops
SEA9:37 amSeattle/Tacoma Intl
$511
Find similar
American Airlines
Dec 10
SEA12:38 amSeattle/Tacoma Intl
12h 20m
2 stops
STT4:58 pmSaint Thomas Island Cyril E King
Dec 17
STT4:16 pmSaint Thomas Island Cyril E King
11h 00m
1 stop
SEA11:16 pmSeattle/Tacoma Intl
$534
Find similar
American Airlines
Dec 10
SEA12:38 amSeattle/Tacoma Intl
12h 20m
2 stops
STT4:58 pmSaint Thomas Island Cyril E King
Dec 17
STT6:17 pmSaint Thomas Island Cyril E King
21h 13m
1 stop
SEA11:30 amSeattle/Tacoma Intl
$561
Find similar

United Airlines flights from Seattle to Saint Thomas Island

Our best United Airlines deals on Seattle to Saint Thomas Island flight tickets
United Airlines
Jan 6
SEA5:10 pmSeattle/Tacoma Intl
14h 50m
2 stops
STT12:00 pmSaint Thomas Island Cyril E King
Jan 16
STT1:02 pmSaint Thomas Island Cyril E King
13h 41m
2 stops
SEA10:43 pmSeattle/Tacoma Intl
$537
Find similar
United Airlines
Jan 6
SEA5:10 pmSeattle/Tacoma Intl
14h 50m
2 stops
STT12:00 pmSaint Thomas Island Cyril E King
Jan 14
STT5:25 pmSaint Thomas Island Cyril E King
31h 32m
2 stops
SEA8:57 pmSeattle/Tacoma Intl
$624
Find similar
United Airlines
Jan 6
SEA5:10 pmSeattle/Tacoma Intl
16h 46m
2 stops
STT1:56 pmSaint Thomas Island Cyril E King
Jan 16
STT1:02 pmSaint Thomas Island Cyril E King
13h 41m
2 stops
SEA10:43 pmSeattle/Tacoma Intl
$646
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated novembro 6, 2025.
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

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

ter 1/6

10:55 pm-12:42 pm

1 stop9h 47m

Saint Thomas Island Cyril E King

sex 1/16

4:15 pm-10:50 pm

1 stop10h 35m

$473

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

qui 1/29

11:12 pm-5:05 pm

2 stops13h 53m

Saint Thomas Island Cyril E King

dom 2/8

4:47 pm-9:37 am

2 stops20h 50m

$511

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

qua 12/10

12:38 am-4:58 pm

2 stops12h 20m

Saint Thomas Island Cyril E King

qua 12/17

4:16 pm-11:16 pm

1 stop11h 00m

$534

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

ter 1/6

5:10 pm-12:00 pm

2 stops14h 50m

Saint Thomas Island Cyril E King

sex 1/16

1:02 pm-10:43 pm

2 stops13h 41m

$537

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

qua 12/10

12:38 am-4:58 pm

2 stops12h 20m

Saint Thomas Island Cyril E King

qua 12/17

6:17 pm-11:30 am

1 stop21h 13m

$561

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

seg 11/24

10:07 pm-11:43 am

1 stop9h 36m

Saint Thomas Island Cyril E King

qua 12/3

6:17 pm-9:42 am

2 stops19h 25m

$597

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

ter 1/6

5:10 pm-12:00 pm

2 stops14h 50m

Saint Thomas Island Cyril E King

qua 1/14

5:25 pm-8:57 pm

2 stops31h 32m

$624

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

seg 11/24

12:42 pm-11:43 am

1 stop19h 01m

Saint Thomas Island Cyril E King

qua 12/3

4:16 pm-11:16 pm

1 stop11h 00m

$635

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

ter 1/6

5:10 pm-1:56 pm

2 stops16h 46m

Saint Thomas Island Cyril E King

sex 1/16

1:02 pm-10:43 pm

2 stops13h 41m

$646

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

sex 11/14

11:00 pm-3:40 pm

1 stop12h 40m

Saint Thomas Island Cyril E King

qua 11/19

3:50 pm-11:59 pm

1 stop12h 09m

$975

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 resultsSorted by cheapest first
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See travel insights to Saint Thomas Island from

How to get the cheapest flight ticket from Seattle to Saint Thomas Island

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Seattle and Saint Thomas Island?

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

The month of January is another great option to travel to Saint Thomas Island, with average flight prices from Seattle averaging around $554.

What is the cheapest day to depart on your flight to Saint Thomas Island?

On average, the least expensive day to fly to Saint Thomas Island from Seattle is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $598. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Seattle to Saint Thomas Island for around $880.

What is the cheapest time of day to depart on your flight to Saint Thomas Island?

The cheapest time of day to fly to Saint Thomas Island is in the afternoon when flights can be purchased for as low as $379. Flights to Saint Thomas Island are more costly in the evening, with an average ticket price of $775. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

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

You are more likely to see cheaper flights to Saint Thomas Island from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Saint Thomas Island for around $660 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Saint Thomas Island from Seattle for as low as $573 on momondo.

Can stopping save me money on Seattle to Saint Thomas Island flights?

You could potentially save up to 19% on your flight if you consider stops on a Seattle to Saint Thomas Island flight.

How have Seattle to Saint Thomas Island flight prices changed over time?

When to book flights from Seattle to Saint Thomas Island

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Saint Thomas Island according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Saint Thomas Island (SEA to STT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Saint Thomas Island

Direct flights

None
There are no direct flights from Seattle to Saint Thomas Island. There are no popular flight routes from Seattle to Saint Thomas Island.
Search flight deals

  • How far is Seattle/Tacoma Intl to Saint Thomas Island Cyril E King by plane?

    There are 3780.5 mi between Seattle/Tacoma Intl and Saint Thomas Island Cyril E King. 9h 36m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Saint Thomas Island Cyril E King Airport?

    Prices for flights from Seattle/Tacoma Intl Airport to Saint Thomas Island Cyril E King Airport are updated daily.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Saint Thomas Island Cyril E King Airport?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Saint Thomas Island Cyril E King Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Saint Thomas Island Cyril E King Airport.

  • What documentation or ID do you need to fly to Saint Thomas Island Cyril E King Airport?

    The travel and health documents you'll need for your trip to Saint Thomas Island Cyril E King Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Saint Thomas Island Cyril E King Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Seattle to Saint Thomas Island?

Best airlines flying from Seattle to Saint Thomas Island

Compare and see reviews for airlines that fly from Seattle to Saint Thomas Island with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $280Free CancellationRating
7.9
8,001 reviews
Search Delta flights
American AirlinesPriceFrom $443Free CancellationRating
7.2
11,040 reviews
Search American Airlines flights
United AirlinesPriceFrom $492Free CancellationRating
7.4
9,007 reviews
Search United Airlines flights

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

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Saint Thomas Island?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Saint Thomas Island from Seattle.

Can I find flights from Seattle to Saint Thomas Island with flexible booking policies on momondo?

All flight searches from Seattle to Saint Thomas Island on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Seattle to Saint Thomas Island?

Once you have performed a search for Seattle to Saint Thomas Island flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Seattle to Saint Thomas Island right now. Can momondo alert me if prices change?

Price alerts on flights to Saint Thomas Island from Seattle are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Saint Thomas Island trip

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