What is the cheapest airline that flies from Seattle/Tacoma Intl to Caribbean Islands?

Delta, United Airlines, and American Airlines are the most popular carriers operating from Seattle/Tacoma Intl to Caribbean Islands

What airlines fly to Caribbean Islands?

American Airlines, United Airlines and Delta are the top three most popular airlines that fly to Caribbean Islands from Seattle according to our data. American Airlines is the first choice among our users, with 61% of people opting to fly with this airline when traveling to Caribbean Islands. Keep in mind that there are 9 different airlines that fly to Caribbean Islands on a routine basis, so you have a few additional options to choose from.

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?

There are 9 operators available for flights from Seattle/Tacoma Intl Airport to Caribbean Islands as of April 2026.

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.

$131 Cheap Flights from Seattle to Caribbean Islands in 2026

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Find the cheapest flights from Seattle to Caribbean Islands

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:36 pm - 3:43 pm

SEA

STT

17h 07m

2 stops

1:22 pm - 10:52 pm

STT

SEA

12h 30m

1 stop

$440United Airlines

vie., may. 8 - mar., may. 12

5:02 am - 5:38 pm

SEA

SJU

9h 36m

1 stop

7:20 am - 3:42 pm

SJU

SEA

11h 22m

1 stop

$456United Airlines

sáb., may. 9 - jue., may. 14

10:29 pm - 12:07 pm

SEA

STT

10h 38m

1 stop

11:27 am - 9:23 pm

STT

SEA

12h 56m

1 stop

$465American Airlines

lun., may. 11 - vie., may. 15

11:16 pm - 3:39 pm

SEA

SXM

13h 23m

2 stops

2:50 pm - 9:20 am

SXM

SEA

21h 30m

2 stops

$486American Airlines

sáb., sep. 5 - sáb., sep. 12

8:00 am - 2:15 pm

SEA

AUA

27h 15m

1 stop

3:05 pm - 9:08 pm

AUA

SEA

33h 03m

1 stop

$499Air Canada

vie., jun. 5 - sáb., jun. 13

11:49 pm - 1:16 pm

SEA

SJU

10h 27m

1 stop

9:15 pm - 10:35 am

SJU

SEA

16h 20m

1 stop

$508JetBlue

sáb., jun. 6 - lun., jun. 15

8:00 am - 11:20 am

SEA

MBJ

25h 20m

1 stop

12:30 pm - 2:22 pm

MBJ

SEA

27h 52m

2 stops

$531Air Canada

sáb., jun. 6 - lun., jun. 22

11:05 pm - 1:20 pm

SEA

SJU

11h 15m

1 stop

2:04 pm - 11:59 pm

SJU

SEA

12h 55m

2 stops

$546Delta

vie., may. 29 - lun., jun. 8

11:39 pm - 3:34 pm

SEA

SJU

12h 55m

1 stop

7:25 am - 9:08 pm

SJU

SEA

16h 43m

1 stop

$549JetBlue

sáb., may. 30 - mar., jun. 30

9:35 pm - 1:51 pm

SEA

SXM

13h 16m

1 stop

3:45 pm - 10:05 am

SXM

SEA

21h 20m

1 stop

$589Delta

dom., may. 24 - sáb., jun. 6

American Airlines flights from Seattle to Caribbean Islands

Our best American Airlines deals on Seattle to Caribbean Islands flight tickets

American Airlines

May 5

SEA10:29 pmSeattle/Tacoma Intl

9h 18m

1 stop

STT10:47 amSaint Thomas Island Cyril E King

May 12

STT12:47 pmSaint Thomas Island Cyril E King

11h 36m

1 stop

SEA9:23 pmSeattle/Tacoma Intl

$465

American Airlines

Sep 5

SEA11:16 pmSeattle/Tacoma Intl

13h 23m

2 stops

SXM3:39 pmSimpson Bay Princess Juliana

Sep 12

SXM2:50 pmSimpson Bay Princess Juliana

21h 30m

2 stops

SEA9:20 amSeattle/Tacoma Intl

$486

American Airlines

Jun 1

SEA6:00 amSeattle/Tacoma Intl

14h 59m

1 stop

SJU11:59 pmSan Juan Luis Munoz Marin Intl

Jun 11

SJU4:39 pmSan Juan Luis Munoz Marin Intl

10h 29m

1 stop

SEA12:08 amSeattle/Tacoma Intl

$494

Southwest flights from Seattle to Caribbean Islands

Our best Southwest deals on Seattle to Caribbean Islands flight tickets

Southwest

Aug 11

SEA4:10 pmSeattle/Tacoma Intl

17h 05m

2 stops

NAS12:15 pmNassau Intl

Aug 18

NAS1:10 pmNassau Intl

12h 55m

2 stops

SEA11:05 pmSeattle/Tacoma Intl

$552

Southwest

Jul 15

SEA8:50 amSeattle/Tacoma Intl

12h 55m

1 stop

SJU12:45 amSan Juan Luis Munoz Marin Intl

Jul 25

SJU12:25 pmSan Juan Luis Munoz Marin Intl

14h 05m

2 stops

SEA11:30 pmSeattle/Tacoma Intl

$586

Southwest

Jul 8

SEA8:50 amSeattle/Tacoma Intl

12h 55m

1 stop

SJU12:45 amSan Juan Luis Munoz Marin Intl

Jul 12

SJU5:20 amSan Juan Luis Munoz Marin Intl

16h 45m

1 stop

SEA7:05 pmSeattle/Tacoma Intl

$606

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

vie. 5/8

7:36 pm-3:43 pm

2 stops17h 07m

Saint Thomas Island Cyril E King

mar. 5/12

1:22 pm-10:52 pm

1 stop12h 30m

$440

Quickest round-trip

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

sáb. 5/9

5:02 am-5:38 pm

1 stop9h 36m

San Juan Luis Munoz Marin Intl

jue. 5/14

7:20 am-3:42 pm

1 stop11h 22m

$456

SeattleSaint Thomas Island

SEA - STT

SEASTT

Seattle/Tacoma Intl

lun. 5/11

10:29 pm-12:07 pm

1 stop10h 38m

Saint Thomas Island Cyril E King

vie. 5/15

11:27 am-9:23 pm

1 stop12h 56m

$465

SeattleSimpson Bay

SEA - SXM

SEASXM

Seattle/Tacoma Intl

sáb. 9/5

11:16 pm-3:39 pm

2 stops13h 23m

Simpson Bay Princess Juliana

sáb. 9/12

2:50 pm-9:20 am

2 stops21h 30m

$486

SeattleOranjestad

SEA - AUA

SEAAUA

Seattle/Tacoma Intl

vie. 6/5

8:00 am-2:15 pm

1 stop27h 15m

Oranjestad Reina Beatrix

sáb. 6/13

3:05 pm-9:08 pm

1 stop33h 03m

$499

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

sáb. 6/6

11:49 pm-1:16 pm

1 stop10h 27m

San Juan Luis Munoz Marin Intl

lun. 6/15

9:15 pm-10:35 am

1 stop16h 20m

$508

SeattleMontego Bay

SEA - MBJ

SEAMBJ

Seattle/Tacoma Intl

sáb. 6/6

8:00 am-11:20 am

1 stop25h 20m

Montego Bay Sangster Intl

lun. 6/22

12:30 pm-2:22 pm

2 stops27h 52m

$531

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

vie. 5/29

11:05 pm-1:20 pm

1 stop11h 15m

San Juan Luis Munoz Marin Intl

lun. 6/8

2:04 pm-11:59 pm

2 stops12h 55m

$546

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

sáb. 5/30

11:39 pm-3:34 pm

1 stop12h 55m

San Juan Luis Munoz Marin Intl

mar. 6/30

7:25 am-9:08 pm

1 stop16h 43m

$549

SeattleSimpson Bay

SEA - SXM

SEASXM

Seattle/Tacoma Intl

dom. 5/24

9:35 pm-1:51 pm

1 stop13h 16m

Simpson Bay Princess Juliana

sáb. 6/6

3:45 pm-10:05 am

1 stop21h 20m

$589

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

What is the cheapest month to fly to Caribbean Islands?

The month of May is, on average, the cheapest month to fly to Caribbean Islands from Seattle, with most prices found around $167. The month of December is another great option to travel to Caribbean Islands, with average flight prices from Seattle averaging around $180.

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 from Seattle 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 $581 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 $497 on momondo.

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

There is only 1 cabin class available to choose from on Seattle 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?

You could potentially save up to 16% on your flight if you consider stops on a Seattle to Caribbean Islands flight.

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

Fastest flight time	8h 52m
Direct flights	None

The fastest flight from Seattle to Caribbean Islands takes 8h 52m

There are no direct flights from Seattle to Caribbean Islands. There are no popular flight routes from Seattle to Caribbean Islands.

Search flight deals

Frequently asked questions about flying from Seattle to Caribbean Islands

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?
There are 9 operators available for flights from Seattle/Tacoma Intl Airport to Caribbean Islands as of April 2026.
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?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Seattle to Caribbean Islands is Boeing 737-800 Passenger/BBJ2 (winglets) (16.63% of total bookings). The next most popular plane models are Airbus A321neo (14.51%), Boeing 737 MAX 8 (8.32%), and Boeing 737-900 (8.32%).

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
Frontier	PriceFrom $175	Free Cancellation	Rating 5.6 2,970 reviews	Search Frontier flights
Delta	PriceFrom $214	Free Cancellation	Rating 7.9 8,467 reviews	Search Delta flights
United Airlines	PriceFrom $278	Free Cancellation	Rating 7.4 9,672 reviews	Search United Airlines flights
JetBlue	PriceFrom $282	Free Cancellation	Rating 7.1 2,967 reviews	Search JetBlue flights
Air Canada	PriceFrom $349	Free Cancellation	Rating 7.1 10,975 reviews	Search Air Canada flights
American Airlines	PriceFrom $364	Free Cancellation	Rating 7.1 11,673 reviews	Search American Airlines flights
Sun Country Air	PriceFrom $454	Free Cancellation	Rating 6.8 337 reviews	Search Sun Country Air flights
Southwest	PriceFrom $496	Free Cancellation	Rating 8.0 4,314 reviews	Search Southwest flights
Alaska Airlines	PriceFrom $587	Free Cancellation	Rating 7.9 12,307 reviews	Search Alaska Airlines 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.