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

Southwest, United Airlines, and Delta 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 64% 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 June 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.

$194 Cheap Flights from Seattle to Caribbean Islands in 2026

Discover deals from 900+ travel sites with momondo.

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.

6:35 am - 10:40 pm

SEA

SJU

13h 05m

2 stops

5:35 am - 3:45 pm

SJU

SEA

13h 10m

2 stops

$436Southwest

Tue, Oct 6 - Tue, Oct 13

11:56 pm - 8:43 pm

SEA

STX

17h 47m

2 stops

8:04 am - 10:26 pm

STX

SEA

17h 22m

2 stops

$444American Airlines

Thu, Aug 13 - Tue, Aug 25

5:00 am - 5:38 pm

SEA

SJU

9h 38m

1 stop

1:00 am - 4:14 pm

SJU

SEA

18h 14m

2 stops

$459United Airlines

Sat, Sep 5 - Sat, Sep 5

9:40 pm - 1:34 pm

SEA

SJU

12h 54m

1 stop

10:30 am - 8:42 pm

SJU

SEA

13h 12m

1 stop

$460JetBlue

Tue, Sep 22 - Fri, Oct 2

11:00 pm - 2:44 pm

SEA

SJU

12h 44m

1 stop

7:00 am - 6:29 pm

SJU

SEA

14h 29m

2 stops

$497United Airlines

Thu, Sep 3 - Tue, Sep 8

3:30 pm - 12:25 pm

SEA

MBJ

17h 55m

1 stop

3:40 pm - 12:09 am

MBJ

SEA

11h 29m

1 stop

$542Delta

Mon, Nov 2 - Wed, Nov 11

6:55 pm - 12:25 pm

SEA

MBJ

14h 30m

2 stops

3:40 pm - 12:09 am

MBJ

SEA

11h 29m

1 stop

$547Delta

Mon, Nov 2 - Wed, Nov 11

8:00 am - 11:20 am

SEA

MBJ

25h 20m

1 stop

12:30 pm - 9:52 am

MBJ

SEA

23h 22m

2 stops

$572Air Canada

Mon, Oct 12 - Sat, Oct 17

3:00 pm - 11:20 am

SEA

MBJ

18h 20m

2 stops

12:30 pm - 9:52 am

MBJ

SEA

23h 22m

2 stops

$580Air Canada

Thu, Aug 27 - Thu, Sep 10

11:44 pm - 3:40 pm

SEA

PLS

12h 56m

1 stop

12:12 pm - 10:49 pm

PLS

SEA

13h 37m

1 stop

$602JetBlue

Tue, Sep 1 - Sat, Sep 5

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American Airlines flights from Seattle to Caribbean Islands

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

American Airlines

Aug 13

SEA11:56 pmSeattle/Tacoma Intl

17h 47m

2 stops

STX8:43 pmChristiansted Henry Rohlsen

Aug 25

STX8:04 amChristiansted Henry Rohlsen

17h 22m

2 stops

SEA10:26 pmSeattle/Tacoma Intl

$444

American Airlines

Aug 13

SEA8:21 pmSeattle/Tacoma Intl

15h 43m

1 stop

STX3:04 pmChristiansted Henry Rohlsen

Aug 25

STX8:04 amChristiansted Henry Rohlsen

19h 16m

1 stop

SEA12:20 amSeattle/Tacoma Intl

$460

American Airlines

Aug 13

SEA11:56 pmSeattle/Tacoma Intl

17h 47m

2 stops

STX8:43 pmChristiansted Henry Rohlsen

Aug 25

STX3:54 pmChristiansted Henry Rohlsen

11h 26m

1 stop

SEA12:20 amSeattle/Tacoma Intl

$464

United Airlines flights from Seattle to Caribbean Islands

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

United Airlines

Sep 5

SEA5:00 amSeattle/Tacoma Intl

9h 38m

1 stop

SJU5:38 pmSan Juan Luis Munoz Marin Intl

Sep 5

SJU1:00 amSan Juan Luis Munoz Marin Intl

18h 14m

2 stops

SEA4:14 pmSeattle/Tacoma Intl

$459

United Airlines

Sep 3

SEA11:00 pmSeattle/Tacoma Intl

12h 44m

1 stop

SJU2:44 pmSan Juan Luis Munoz Marin Intl

Sep 8

SJU7:00 amSan Juan Luis Munoz Marin Intl

14h 29m

2 stops

SEA6:29 pmSeattle/Tacoma Intl

$497

United Airlines

Sep 8

SEA11:00 pmSeattle/Tacoma Intl

11h 53m

2 stops

SJU1:53 pmSan Juan Luis Munoz Marin Intl

Sep 12

SJU1:00 amSan Juan Luis Munoz Marin Intl

15h 22m

2 stops

SEA1:22 pmSeattle/Tacoma Intl

$552

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Tue 10/6

6:35 am-10:40 pm

2 stops13h 05m

San Juan Luis Munoz Marin Intl

Tue 10/13

5:35 am-3:45 pm

2 stops13h 10m

$436

SeattleChristiansted

SEA - STX

SEASTX

Seattle/Tacoma Intl

Thu 8/13

11:56 pm-8:43 pm

2 stops17h 47m

Christiansted Henry Rohlsen

Tue 8/25

8:04 am-10:26 pm

2 stops17h 22m

$444

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Sat 9/5

5:00 am-5:38 pm

1 stop9h 38m

San Juan Luis Munoz Marin Intl

Sat 9/5

1:00 am-4:14 pm

2 stops18h 14m

$459

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Tue 9/22

9:40 pm-1:34 pm

1 stop12h 54m

San Juan Luis Munoz Marin Intl

Fri 10/2

10:30 am-8:42 pm

1 stop13h 12m

$460

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Thu 9/3

11:00 pm-2:44 pm

1 stop12h 44m

San Juan Luis Munoz Marin Intl

Tue 9/8

7:00 am-6:29 pm

2 stops14h 29m

$497

SeattleMontego Bay

SEA - MBJ

SEAMBJ

Seattle/Tacoma Intl

Mon 11/2

3:30 pm-12:25 pm

1 stop17h 55m

Montego Bay Sangster Intl

Wed 11/11

3:40 pm-12:09 am

1 stop11h 29m

$542

Quickest round-trip

SeattleMontego Bay

SEA - MBJ

SEAMBJ

Seattle/Tacoma Intl

Mon 11/2

6:55 pm-12:25 pm

2 stops14h 30m

Montego Bay Sangster Intl

Wed 11/11

3:40 pm-12:09 am

1 stop11h 29m

$547

SeattleMontego Bay

SEA - MBJ

SEAMBJ

Seattle/Tacoma Intl

Mon 10/12

8:00 am-11:20 am

1 stop25h 20m

Montego Bay Sangster Intl

Sat 10/17

12:30 pm-9:52 am

2 stops23h 22m

$572

SeattleMontego Bay

SEA - MBJ

SEAMBJ

Seattle/Tacoma Intl

Thu 8/27

3:00 pm-11:20 am

2 stops18h 20m

Montego Bay Sangster Intl

Thu 9/10

12:30 pm-9:52 am

2 stops23h 22m

$580

SeattleProvidenciales

SEA - PLS

SEAPLS

Seattle/Tacoma Intl

Tue 9/1

11:44 pm-3:40 pm

1 stop12h 56m

Providenciales

Sat 9/5

12:12 pm-10:49 pm

1 stop13h 37m

$602

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.

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 $591 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 $504 on momondo.

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

You could potentially save up to 39% 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 June 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) (14.92% of total bookings). The next most popular plane models are Airbus A321neo (14.66%), Boeing 737-900 (8.79%), and Boeing 737 MAX 8 (8.13%).

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 2,895 reviews	Search Frontier flights
Delta	PriceFrom $199	Free Cancellation	Rating 7.9 8,402 reviews	Search Delta flights
United Airlines	PriceFrom $278	Free Cancellation	Rating 7.4 9,809 reviews	Search United Airlines flights
JetBlue	PriceFrom $282	Free Cancellation	Rating 7.1 2,981 reviews	Search JetBlue flights
Air Canada	PriceFrom $349	Free Cancellation	Rating 7.1 11,165 reviews	Search Air Canada flights
American Airlines	PriceFrom $365	Free Cancellation	Rating 7.1 11,643 reviews	Search American Airlines flights
Sun Country Air	PriceFrom $454	Free Cancellation	Rating 6.8 329 reviews	Search Sun Country Air flights
Southwest	PriceFrom $494	Free Cancellation	Rating 7.9 4,234 reviews	Search Southwest flights
Alaska Airlines	PriceFrom $587	Free Cancellation	Rating 7.9 12,487 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.