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Cheap flights from Seattle to Caribbean Islands from $171

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 Caribbean Islands departing on 10/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Seattle to Caribbean Islands

Cheap round-trip flights

JetBlue Logo
11:59 pm - 4:43 pmSEA-SJU
13h 44m1 stop
JetBlue Logo
1:25 pm - 10:20 pmSJU-SEA
11h 55m1 stop
$364JetBlue
Find Deal
Tue, Sep 23 - Tue, Sep 30
United Airlines Logo
5:35 pm - 12:00 pmSEA-SJU
15h 25m2 stops
United Airlines Logo
1:30 pm - 10:17 pmSJU-SEA
11h 47m1 stop
$377United Airlines
Find Deal
Tue, Sep 23 - Tue, Sep 30
JetBlue Logo
11:40 pm - 4:42 pmSEA-SJU
14h 02m1 stop
JetBlue Logo
12:50 pm - 10:10 pmSJU-SEA
12h 20m1 stop
$378JetBlue
Find Deal
Fri, Oct 17 - Fri, Oct 24
Delta Logo
6:00 am - 9:59 pmSEA-SJU
12h 59m1 stop
Delta Logo
3:36 pm - 11:57 pmSJU-SEA
12h 21m2 stops
$417Delta
Find Deal
Wed, Oct 29 - Mon, Nov 3
American Airlines Logo
7:25 am - 11:37 pmSEA-SJU
13h 12m2 stops
American Airlines Logo
6:10 am - 9:23 pmSJU-SEA
18h 13m2 stops
$428American Airlines
Find Deal
Thu, Sep 18 - Tue, Sep 23
Delta Logo
6:00 am - 10:00 pmSEA-SJU
13h 00m2 stops
Delta Logo
7:15 am - 8:19 pmSJU-SEA
16h 04m2 stops
$432Delta
Find Deal
Tue, Sep 30 - Fri, Oct 31
American Airlines Logo
8:51 pm - 11:10 amSEA-NAS
11h 19m1 stop
American Airlines Logo
10:26 am - 11:59 pmNAS-SEA
16h 33m1 stop
$444American Airlines
Find Deal
Thu, Sep 11 - Sun, Sep 14
Southwest Logo
5:55 pm - 11:35 amSEA-SJU
13h 40m2 stops
Southwest Logo
3:30 pm - 12:30 amSJU-SEA
13h 00m2 stops
$451Southwest
Find Deal
Fri, Nov 7 - Fri, Nov 14
Southwest Logo
11:10 pm - 2:10 pmSEA-SJU
12h 00m2 stops
Southwest Logo
11:10 am - 9:45 pmSJU-SEA
13h 35m2 stops
$468Southwest
Find Deal
Mon, Sep 8 - Fri, Sep 12
Alaska Airlines Logo
12:33 am - 2:15 pmSEA-SJU
10h 42m1 stop
Alaska Airlines Logo
3:05 pm - 11:01 pmSJU-SEA
10h 56m1 stop
$536Alaska Airlines
Find Deal
Fri, Sep 26 - Fri, Oct 3

JetBlue flights from Seattle to Caribbean Islands

Our best JetBlue deals on Seattle to Caribbean Islands flight tickets
JetBlue
Sep 23
SEA11:59 pmSeattle/Tacoma Intl
13h 44m
1 stop
SJU4:43 pmSan Juan Luis Munoz Marin Intl
Sep 30
SJU1:25 pmSan Juan Luis Munoz Marin Intl
11h 55m
1 stop
SEA10:20 pmSeattle/Tacoma Intl
$364
Find similar
JetBlue
Oct 17
SEA11:40 pmSeattle/Tacoma Intl
14h 02m
1 stop
SJU4:42 pmSan Juan Luis Munoz Marin Intl
Oct 24
SJU12:50 pmSan Juan Luis Munoz Marin Intl
12h 20m
1 stop
SEA10:10 pmSeattle/Tacoma Intl
$378
Find similar
JetBlue
Oct 10
SEA11:40 pmSeattle/Tacoma Intl
18h 44m
1 stop
SJU9:24 pmSan Juan Luis Munoz Marin Intl
Oct 18
SJU12:50 pmSan Juan Luis Munoz Marin Intl
12h 20m
1 stop
SEA10:10 pmSeattle/Tacoma Intl
$379
Find similar

United Airlines flights from Seattle to Caribbean Islands

Our best United Airlines deals on Seattle to Caribbean Islands flight tickets
United Airlines
Sep 23
SEA5:35 pmSeattle/Tacoma Intl
15h 25m
2 stops
SJU12:00 pmSan Juan Luis Munoz Marin Intl
Sep 30
SJU1:30 pmSan Juan Luis Munoz Marin Intl
11h 47m
1 stop
SEA10:17 pmSeattle/Tacoma Intl
$377
Find similar
United Airlines
Sep 21
SEA11:54 pmSeattle/Tacoma Intl
11h 50m
1 stop
SJU2:44 pmSan Juan Luis Munoz Marin Intl
Sep 25
SJU1:05 amSan Juan Luis Munoz Marin Intl
16h 19m
2 stops
SEA2:24 pmSeattle/Tacoma Intl
$399
Find similar
United Airlines
Sep 8
SEA7:00 pmSeattle/Tacoma Intl
14h 00m
2 stops
SJU12:00 pmSan Juan Luis Munoz Marin Intl
Sep 11
SJU1:05 amSan Juan Luis Munoz Marin Intl
12h 40m
1 stop
SEA10:45 amSeattle/Tacoma Intl
$400
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Caribbean Islands 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 August 11, 2025.
Use the filters below to find and compare flights from Seattle to Caribbean Islands that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Tue 9/23

11:59 pm-4:43 pm

1 stop13h 44m

San Juan Luis Munoz Marin Intl

Tue 9/30

1:25 pm-10:20 pm

1 stop11h 55m

$364

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Tue 9/23

5:35 pm-12:00 pm

2 stops15h 25m

San Juan Luis Munoz Marin Intl

Tue 9/30

1:30 pm-10:17 pm

1 stop11h 47m

$377

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Fri 10/17

11:40 pm-4:42 pm

1 stop14h 02m

San Juan Luis Munoz Marin Intl

Fri 10/24

12:50 pm-10:10 pm

1 stop12h 20m

$378

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Wed 10/29

6:00 am-9:59 pm

1 stop12h 59m

San Juan Luis Munoz Marin Intl

Mon 11/3

3:36 pm-11:57 pm

2 stops12h 21m

$417

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Thu 9/18

7:25 am-11:37 pm

2 stops13h 12m

San Juan Luis Munoz Marin Intl

Tue 9/23

6:10 am-9:23 pm

2 stops18h 13m

$428

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Tue 9/30

6:00 am-10:00 pm

2 stops13h 00m

San Juan Luis Munoz Marin Intl

Fri 10/31

7:15 am-8:19 pm

2 stops16h 04m

$432

SeattleNassau

SEA - NAS

SEANAS

Seattle/Tacoma Intl

Thu 9/11

8:51 pm-11:10 am

1 stop11h 19m

Nassau Intl

Sun 9/14

10:26 am-11:59 pm

1 stop16h 33m

$444

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Fri 11/7

5:55 pm-11:35 am

2 stops13h 40m

San Juan Luis Munoz Marin Intl

Fri 11/14

3:30 pm-12:30 am

2 stops13h 00m

$451

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Mon 9/8

11:10 pm-2:10 pm

2 stops12h 00m

San Juan Luis Munoz Marin Intl

Fri 9/12

11:10 am-9:45 pm

2 stops13h 35m

$468

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Fri 9/26

12:33 am-2:15 pm

1 stop10h 42m

San Juan Luis Munoz Marin Intl

Fri 10/3

3:05 pm-11:01 pm

1 stop10h 56m

$536

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Caribbean Islands from

How to get the cheapest flight ticket from Seattle to Caribbean Islands

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 Caribbean Islands?

The month of January is, on average, the cheapest month to fly to Caribbean Islands from Seattle, with most prices found around $470. The month of October is another great option to travel to Caribbean Islands, with average flight prices from Seattle averaging around $478.

What is the cheapest day to depart on your flight to Caribbean Islands?

The cheapest day to depart from Seattle to Caribbean Islands is on a Tuesday. Travelers who choose to depart for Caribbean Islands on a Tuesday will often find tickets for as low as $504. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $693. These prices are subject to change though, so be sure to set up a Price Alert for flights to Caribbean Islands.

What is the cheapest time of day to depart on your flight to Caribbean Islands?

According to our data, the cheapest time of day to fly to Caribbean Islands is at noon. momondo users have found flights departing from Seattle to Caribbean Islands at noon for as low as $465. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Try not to purchase tickets in the evening because they tend to be around $584. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Seattle/Tacoma Intl to Caribbean Islands flight route?

Fly from Seattle/Tacoma Intl to Nassau Intl for the best Seattle/Tacoma Intl - Caribbean Islands flight prices

How far in advance should I book a flight to Caribbean Islands?

You are more likely to see cheaper flights to Caribbean Islands from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Caribbean Islands for around $594 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Caribbean Islands from Seattle for as low as $484 on momondo.

What cabin class options are available on Seattle/Tacoma Intl to Caribbean Islands flights?

There are 2 cabin classes available to choose from on Seattle/Tacoma Intl to Caribbean Islands flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Seattle to Caribbean Islands flights?

No. A direct flight is the cheapest option for a flight between Seattle to Caribbean Islands.

Cheap Seattle to Caribbean Islands flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Caribbean Islands

Best Price Found

$171

Fastest flight time

8h 16m

Direct flights

None

Airports in Caribbean Islands

10 airports
The best one-way flight to Caribbean Islands from Seattle in the past 72 hours is $171. The best round-trip flight deal from Seattle to Caribbean Islands found on momondo in the last 72 hours is $364.
The fastest flight from Seattle to Caribbean Islands takes 8h 16m
There are no direct flights from Seattle to Caribbean Islands. Popular non-direct routes for this connection are Seattle/Tacoma Intl Airport - San Juan Luis Munoz Marin Intl Airport, Seattle/Tacoma Intl Airport - Willemstad Hato Int. Airport and Seattle/Tacoma Intl Airport - Oranjestad Reina Beatrix Airport.
There are 10 airports near Caribbean Islands: Willemstad Hato Int. (CUR), Nassau Intl (NAS), Saint Thomas Island Cyril E King (STT), Punta Cana (PUJ), Montego Bay Sangster Intl (MBJ), Castries Hewanorra (UVF), Christiansted Henry Rohlsen (STX), Simpson Bay Princess Juliana (SXM), Oranjestad Reina Beatrix (AUA), San Juan Luis Munoz Marin Intl (SJU)
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  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Caribbean Islands?

    Prices for flights from Seattle/Tacoma Intl Airport to Caribbean Islands are refreshed on a daily basis.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Caribbean Islands?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Caribbean Islands?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Seattle/Tacoma Intl Airport to Caribbean Islands.

  • What documentation or ID do you need to fly to Caribbean Islands?

    The necessary travel and health documents for your Caribbean Islands trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Seattle to Caribbean Islands?

Best airlines flying from Seattle to Caribbean Islands

Compare and see reviews for airlines that fly from Seattle to Caribbean Islands with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $175Free CancellationRating
5.8
3,221 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $233Free CancellationRating
6.3
8,042 reviews
Search Spirit Airlines flights
JetBluePriceFrom $252Free CancellationRating
7.2
2,916 reviews
Search JetBlue flights
United AirlinesPriceFrom $292Free CancellationRating
7.4
8,920 reviews
Search United Airlines flights
American AirlinesPriceFrom $337Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
Alaska AirlinesPriceFrom $340Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
DeltaPriceFrom $366Free CancellationRating
8.0
7,979 reviews
Search Delta flights
Sun Country AirPriceFrom $447Free CancellationRating
6.9
333 reviews
Search Sun Country Air flights
SouthwestPriceFrom $521Free CancellationRating
8.0
4,248 reviews
Search Southwest flights
Air CanadaPriceFrom $632Free CancellationRating
7.1
9,915 reviews
Search Air Canada flights

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Caribbean Islands?

Finding the right flight to Caribbean Islands from Seattle is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Caribbean Islands quick and easy, saving you time and money.

Can I find flights from Seattle to Caribbean Islands with flexible booking policies on momondo?

All flight searches from Seattle to Caribbean Islands on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Seattle to Caribbean Islands?

momondo provides multiple filters to help you find the best flight to Caribbean Islands from Seattle. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Price alerts on flights to Caribbean Islands 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 Caribbean Islands trip

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