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Cheap flights from Seattle to Saint Thomas Island from $188

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 2/5. 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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Find the cheapest flights from Seattle to Saint Thomas Island

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
10:55 pm - 12:42 pm
SEA
-
STT
9h 47m1 stop
Delta Logo
3:10 pm - 11:15 pm
STT
-
SEA
12h 05m1 stop
$473Delta
Sun, Jan 11 - Thu, Jan 22
Delta Logo
9:55 pm - 1:49 pm
SEA
-
STT
11h 54m1 stop
Delta Logo
2:00 pm - 9:54 pm
STT
-
SEA
10h 54m1 stop
$513Delta
Thu, Feb 19 - Tue, Mar 10
Delta Logo
7:00 pm - 12:42 pm
SEA
-
STT
13h 42m2 stops
Delta Logo
4:15 pm - 11:12 pm
STT
-
SEA
10h 57m1 stop
$514Delta
Tue, Feb 17 - Tue, Feb 24
United Airlines Logo
5:10 pm - 1:56 pm
SEA
-
STT
16h 46m2 stops
United Airlines Logo
1:02 pm - 10:59 pm
STT
-
SEA
13h 57m2 stops
$527United Airlines
Tue, Feb 10 - Wed, Feb 18
American Airlines Logo
11:12 pm - 3:56 pm
SEA
-
STT
12h 44m2 stops
American Airlines Logo
4:47 pm - 9:37 am
STT
-
SEA
20h 50m2 stops
$541American Airlines
Sun, Jan 11 - Sun, Jan 18
United Airlines Logo
5:12 pm - 1:56 pm
SEA
-
STT
16h 44m2 stops
United Airlines Logo
1:02 pm - 10:43 pm
STT
-
SEA
13h 41m2 stops
$547United Airlines
Tue, Jan 20 - Mon, Jan 26
United Airlines Logo
12:43 pm - 1:56 pm
SEA
-
STT
21h 13m2 stops
United Airlines Logo
2:05 pm - 10:45 pm
STT
-
SEA
11h 40m1 stop
$551United Airlines
Mon, Feb 23 - Mon, Mar 9
Delta Logo
11:05 pm - 12:42 pm
SEA
-
STT
9h 37m1 stop
Delta Logo
3:10 pm - 11:12 pm
STT
-
SEA
12h 02m1 stop
$555Delta
Mon, Feb 16 - Wed, Feb 25
United Airlines Logo
7:10 pm - 1:56 pm
SEA
-
STT
14h 46m2 stops
United Airlines Logo
2:05 pm - 10:45 pm
STT
-
SEA
11h 40m1 stop
$562United Airlines
Sun, Feb 22 - Mon, Mar 9
United Airlines Logo
7:10 pm - 1:56 pm
SEA
-
STT
14h 46m2 stops
United Airlines Logo
1:02 pm - 10:59 pm
STT
-
SEA
13h 57m2 stops
$563United Airlines
Sun, Feb 22 - Thu, Feb 26

Delta flights from Seattle to Saint Thomas Island

Our best Delta deals on Seattle to Saint Thomas Island flight tickets
Delta
Jan 11
SEA10:55 pmSeattle/Tacoma Intl
12h 19m
1 stop
STT3:14 pmSaint Thomas Island Cyril E King
Jan 16
STT3:10 pmSaint Thomas Island Cyril E King
11h 40m
1 stop
SEA10:50 pmSeattle/Tacoma Intl
$473
Find similar
Delta
Feb 19
SEA9:55 pmSeattle/Tacoma Intl
11h 54m
1 stop
STT1:49 pmSaint Thomas Island Cyril E King
Mar 10
STT2:00 pmSaint Thomas Island Cyril E King
10h 54m
1 stop
SEA9:54 pmSeattle/Tacoma Intl
$513
Find similar
Delta
Feb 17
SEA4:40 pmSeattle/Tacoma Intl
16h 02m
2 stops
STT12:42 pmSaint Thomas Island Cyril E King
Feb 26
STT1:52 pmSaint Thomas Island Cyril E King
13h 20m
1 stop
SEA11:12 pmSeattle/Tacoma Intl
$514
Find similar

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 11
SEA11:12 pmSeattle/Tacoma Intl
12h 44m
2 stops
STT3:56 pmSaint Thomas Island Cyril E King
Jan 18
STT4:47 pmSaint Thomas Island Cyril E King
20h 50m
2 stops
SEA9:37 amSeattle/Tacoma Intl
$541
Find similar
American Airlines
Mar 5
SEA12:59 amSeattle/Tacoma Intl
12h 32m
2 stops
STT5:31 pmSaint Thomas Island Cyril E King
Mar 16
STT12:02 pmSaint Thomas Island Cyril E King
14h 28m
2 stops
SEA11:30 pmSeattle/Tacoma Intl
$582
Find similar
American Airlines
Feb 19
SEA12:59 amSeattle/Tacoma Intl
11h 53m
1 stop
STT4:52 pmSaint Thomas Island Cyril E King
Feb 25
STT2:45 pmSaint Thomas Island Cyril E King
24h 20m
2 stops
SEA11:05 amSeattle/Tacoma Intl
$583
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 December 11, 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

Sun 1/11

10:55 pm-12:42 pm

1 stop9h 47m

Saint Thomas Island Cyril E King

Thu 1/22

3:10 pm-11:15 pm

1 stop12h 05m

$473

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Thu 2/19

9:55 pm-1:49 pm

1 stop11h 54m

Saint Thomas Island Cyril E King

Tue 3/10

2:00 pm-9:54 pm

1 stop10h 54m

$513

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Tue 2/17

7:00 pm-12:42 pm

2 stops13h 42m

Saint Thomas Island Cyril E King

Tue 2/24

4:15 pm-11:12 pm

1 stop10h 57m

$514

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Tue 2/10

5:10 pm-1:56 pm

2 stops16h 46m

Saint Thomas Island Cyril E King

Wed 2/18

1:02 pm-10:59 pm

2 stops13h 57m

$527

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Sun 1/11

11:12 pm-3:56 pm

2 stops12h 44m

Saint Thomas Island Cyril E King

Sun 1/18

4:47 pm-9:37 am

2 stops20h 50m

$541

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Tue 1/20

5:12 pm-1:56 pm

2 stops16h 44m

Saint Thomas Island Cyril E King

Mon 1/26

1:02 pm-10:43 pm

2 stops13h 41m

$547

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Mon 2/23

12:43 pm-1:56 pm

2 stops21h 13m

Saint Thomas Island Cyril E King

Mon 3/9

2:05 pm-10:45 pm

1 stop11h 40m

$551

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Mon 2/16

11:05 pm-12:42 pm

1 stop9h 37m

Saint Thomas Island Cyril E King

Wed 2/25

3:10 pm-11:12 pm

1 stop12h 02m

$555

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Sun 2/22

7:10 pm-1:56 pm

2 stops14h 46m

Saint Thomas Island Cyril E King

Mon 3/9

2:05 pm-10:45 pm

1 stop11h 40m

$562

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

Sun 2/22

7:10 pm-1:56 pm

2 stops14h 46m

Saint Thomas Island Cyril E King

Thu 2/26

1:02 pm-10:59 pm

2 stops13h 57m

$563

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 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 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 $536.

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 $662 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 $491 on momondo.

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

Fastest flight time

9h 47m

Direct flights

None
The fastest flight from Seattle to Saint Thomas Island takes 9h 47m
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 47m 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
8,008 reviews
Search Delta flights
United AirlinesPriceFrom $305Free CancellationRating
7.4
9,095 reviews
Search United Airlines flights
American AirlinesPriceFrom $443Free CancellationRating
7.2
11,050 reviews
Search American 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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Airports servicing U.S. Virgin Islands

Saint Croix Airport