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Puerto Rico

$129+ Cheap flights from Seattle (SEA) to Puerto Rico

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/21. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SJU
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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Cheap flight deals from Seattle to Puerto Rico

Cheapest flights from Seattle to Puerto Rico
Explore the most affordable flight options available from Seattle to Puerto Rico. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 29, 2026.

This American Airlines deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/26:13 pm
SEA
-
SJU
2 stops11h 47m
American Airlines
Tue 3/33:39 pm
SJU
-
SEA
1 stop11h 25m
American Airlines
Deal found 1/28$379
This United Airlines deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/257:00 am
SEA
-
SJU
1 stop10h 00m
United Airlines
Tue 3/32:05 am
SJU
-
SEA
1 stop13h 09m
United Airlines
Deal found 1/28$384
This American Airlines deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/245:40 pm
SEA
-
SJU
1 stop17h 23m
American Airlines
Wed 9/302:25 pm
SJU
-
SEA
1 stop11h 26m
American Airlines
Deal found 1/27$389
This United Airlines deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/17:00 am
SEA
-
SJU
1 stop10h 34m
United Airlines
Tue 4/141:00 am
SJU
-
SEA
2 stops13h 48m
United Airlines
Deal found 1/29$418
This United Airlines deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/287:00 am
SEA
-
SJU
2 stops11h 22m
United Airlines
Mon 3/91:05 am
SJU
-
SEA
1 stop13h 05m
United Airlines
Deal found 1/28$419
This Southwest deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/16:25 pm
SEA
-
SJU
2 stops12h 05m
Southwest
Tue 3/105:55 am
SJU
-
SEA
2 stops16h 40m
Southwest
Deal found 1/28$421
This Southwest deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/256:45 am
SEA
-
SJU
2 stops13h 50m
Southwest
Wed 3/410:20 am
SJU
-
SEA
2 stops15h 30m
Southwest
Deal found 1/28$424
This United Airlines deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/16:45 am
SEA
-
SJU
1 stop10h 41m
United Airlines
Tue 3/107:05 am
SJU
-
SEA
2 stops14h 58m
United Airlines
Deal found 1/28$432
This Southwest deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/296:00 am
SEA
-
SJU
2 stops13h 40m
Southwest
Tue 5/55:05 am
SJU
-
SEA
2 stops16h 25m
Southwest
Deal found 1/28$436
This United Airlines deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/97:00 am
SEA
-
SJU
1 stop10h 34m
United Airlines
Thu 4/161:40 pm
SJU
-
SEA
1 stop10h 26m
United Airlines
Deal found 1/28$438
This United Airlines deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/237:00 am
SEA
-
BQN
2 stops12h 57m
United Airlines
Wed 2/251:09 am
BQN
-
SEA
1 stop14h 05m
United Airlines
Deal found 1/28$474
This United Airlines deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/117:30 am
SEA
-
BQN
1 stop12h 39m
United Airlines
Sun 6/1412:15 am
BQN
-
SEA
2 stops16h 43m
United Airlines
Deal found 1/28$574

Find flight deals from Seattle to Puerto Rico

Keep the following information in mind while searching for Seattle to Puerto Rico flight deals. Data was last updated January 29, 2026.

Round-trip from

$379
(American Airlines)

One-way from

$129
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$479
From Seattle/Tacoma Intl to Puerto Rico
Search Deals
One-way flight from Seattle/Tacoma Intl to Puerto Rico
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($24 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($21 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Puerto Rico 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, Cheapflights users made 2,558,603 searches. Data last updated January 29, 2026.
Use the filters below to find and compare flights from Seattle to Puerto Rico that are best for you.

Fly from

Seattle

Fly to

Puerto Rico

Route

Depart

Return

Price

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Wed 4/29

8:00 am-9:24 pm

1 stop10h 24m

San Juan Luis Munoz Marin Intl

Tue 5/5

7:20 am-7:00 pm

2 stops14h 40m

$384

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Wed 2/18

7:00 am-9:00 pm

1 stop10h 00m

San Juan Luis Munoz Marin Intl

Wed 2/25

7:40 am-6:03 pm

2 stops14h 23m

$384

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Sat 2/28

11:35 pm-2:40 pm

1 stop11h 05m

San Juan Luis Munoz Marin Intl

Tue 3/10

7:05 am-7:03 pm

2 stops14h 58m

$428

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Thu 4/9

7:00 am-8:34 pm

1 stop10h 34m

San Juan Luis Munoz Marin Intl

Thu 4/16

1:40 pm-9:06 pm

1 stop10h 26m

$438

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Sun 5/17

7:00 am-8:34 pm

1 stop10h 34m

San Juan Luis Munoz Marin Intl

Sun 5/24

1:40 pm-10:59 pm

1 stop12h 19m

$449

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Sat 4/18

5:55 pm-11:50 am

2 stops14h 55m

San Juan Luis Munoz Marin Intl

Sat 4/25

7:15 am-10:01 pm

2 stops17h 46m

$470

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Sun 2/22

7:00 am-12:36 am

2 stops13h 36m

San Juan Luis Munoz Marin Intl

Fri 2/27

2:05 am-11:14 am

1 stop13h 09m

$470

SeattleAguadilla

SEA - BQN

SEABQN

Seattle/Tacoma Intl

Mon 2/23

7:00 am-11:57 pm

2 stops12h 57m

Aguadilla Borinquen

Wed 2/25

1:09 am-11:14 am

1 stop14h 05m

$474

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Mon 2/23

6:45 am-9:26 pm

1 stop10h 41m

San Juan Luis Munoz Marin Intl

Wed 2/25

2:05 am-11:14 am

1 stop13h 09m

$474

SeattleAguadilla

SEA - BQN

SEABQN

Seattle/Tacoma Intl

Fri 2/13

11:59 pm-11:57 pm

2 stops19h 58m

Aguadilla Borinquen

Mon 2/16

1:09 am-11:14 am

1 stop14h 05m

$1,227

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/28

Showing 1-10 of 21 results
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Best time to book a flight from Seattle to Puerto Rico

Have a flexible travel schedule? Discover the best time to fly to Puerto Rico from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Puerto Rico

What is the cheapest month to book a flight from Seattle to Puerto Rico?

Currently, March is the cheapest month in which you can book a flight from Seattle to Puerto Rico (average of $285). Flying from Seattle to Puerto Rico in July is currently the most expensive (average of $477). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Puerto Rico

Get insights into the airlines that provide service to Puerto Rico. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Puerto Rico. Reviews last updated January 29, 2026.
Read reviews from past customers who have flown Southwest, Delta, and United Airlines from Seattle to Puerto Rico. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,267 reviews

Overall

8.0

Crew

8.6

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
8.0
Very good
4,267 reviews
Southwest
8.0
Very good
4,267 reviews

Overall

8.0

Crew

8.6

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Delta
7.9
Good
8,127 reviews
Southwest
8.0
Very good
4,267 reviews

Overall

8.0

Crew

8.6

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
United Airlines
7.4
Good
9,215 reviews
Southwest
8.0
Very good
4,267 reviews

Overall

8.0

Crew

8.6

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,206 reviews
Southwest
8.0
Very good
4,267 reviews

Overall

8.0

Crew

8.6

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
JetBlue
7.2
Good
2,891 reviews
Southwest
8.0
Very good
4,267 reviews

Overall

8.0

Crew

8.6

Comfort

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

Find useful and relevant information for your journey from Seattle to Puerto Rico. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Seattle to Puerto Rico?

    Most people fly from Seattle/Tacoma Intl (SEA) if they book a flight from Seattle to Puerto Rico. Seattle/Tacoma Intl is conveniently located just 11.4 mi from Seattle’s city center.

  • How long is the flight from Seattle to Puerto Rico?

    There are many flights that can get you from Seattle to Puerto Rico in 10h 24m. Fly via United Airlines to get the fastest option. There are 3723 mi between Seattle and Puerto Rico.

  • What are the cheapest airlines to fly from Seattle to Puerto Rico one-way?

    For one-way options, check prices for JetBlue. According to our data, you can fly for as low as $170. Users have also found prices from $178 and $182 on American Airlines and Delta, respectively.

  • What are the most popular routes from Seattle to Puerto Rico?

    The most popular flight routes from Seattle to Puerto Rico are Seattle/Tacoma Intl - San Juan Luis Munoz Marin Intl, Seattle/Tacoma Intl - Culebra and Seattle/Tacoma Intl - Aguadilla Borinquen.

  • Can I find deals for flights from Seattle to Puerto Rico that include hotel bookings?

    Yes. In addition to deals on Seattle to Puerto Rico flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Puerto Rico?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Puerto Rico.

  • Can I find deals for business class flights from Seattle to Puerto Rico?

    Yes. Cheapflights offers flight deals from Seattle to Puerto Rico by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Puerto Rico?

    Currently, March is the cheapest month in which you can book a flight from Seattle to Puerto Rico (average of $285). Flying from Seattle to Puerto Rico in July is currently the most expensive (average of $477). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Seattle to Puerto Rico

See prices for flight routes from nearby airports that may be better suited for you.
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Portland to Puerto Plata flights
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Seattle to Marsh Harbour flights
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Top 9 airlines flying from Seattle to Puerto Rico

Discover the top 9 airlines that operate flights from Seattle to Puerto Rico. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$175Average$344FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$191Average$341FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$282Average$553FlexibilityNo cancel feeOn-time62%
DeltaCheapest$342Average$605FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$363Average$628FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$363Average$576FlexibilityNo cancel feeOn-time71%
Sun Country AirCheapest$454Average$810FlexibilityNo cancel feeOn-time83%
SouthwestCheapest$521Average$695FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$626Average$880FlexibilityNo cancel feeOn-time75%

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