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Puerto Rico

$138+ 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 1/8. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SJU
Nov 27 — Dec 41
Thu 11/27
Thu 12/4
1 adult, Economy
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Cheap 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 October 28, 2025.

Round-trip from

$396
(United Airlines)

One-way from

$138
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$459
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. 5% potential increase in price ($34 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($22 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find 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 October 28, 2025.

This United Airlines deal was found by Cheapflights users on 10/26. 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 12/611:50 pmSEA - SJU
1 stop10h 50mUnited Airlines
Tue 12/92:05 amSJU - SEA
1 stop13h 11mUnited Airlines
Deal found 10/26$396
This Frontier deal was found by Cheapflights users on 10/28. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/162:22 pmSEA - SJU
2 stops21h 48mFrontier
Sun 11/2310:22 pmSJU - SEA
2 stops17h 34mFrontier
Deal found 10/28$403
This Frontier deal was found by Cheapflights users on 10/26. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1011:43 amSEA - SJU
2 stops26h 11mFrontier
Wed 11/123:59 amSJU - SEA
2 stops18h 33mFrontier
Deal found 10/26$412
This Frontier deal was found by Cheapflights users on 10/27. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/311:25 pmSEA - SJU
2 stops21h 36mFrontier
Sat 1/107:01 pmSJU - SEA
2 stops21h 29mFrontier
Deal found 10/27$413
This Frontier deal was found by Cheapflights users on 10/28. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/162:22 pmSEA - SJU
2 stops21h 48mFrontier
Tue 11/2510:22 pmSJU - SEA
2 stops17h 34mFrontier
Deal found 10/28$423
This Frontier deal was found by Cheapflights users on 10/28. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1711:43 amSEA - SJU
2 stops26h 11mFrontier
Mon 11/2410:22 pmSJU - SEA
2 stops17h 34mFrontier
Deal found 10/28$425
This Frontier deal was found by Cheapflights users on 10/27. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/111:37 pmSEA - SJU
2 stops17h 42mFrontier
Fri 11/143:59 amSJU - SEA
2 stops18h 33mFrontier
Deal found 10/27$426
This Frontier deal was found by Cheapflights users on 10/26. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/53:40 pmSEA - SJU
2 stops19h 54mFrontier
Thu 12/114:31 pmSJU - SEA
2 stops20h 15mFrontier
Deal found 10/26$427
This United Airlines deal was found by Cheapflights users on 10/26. 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.
Fri 12/58:10 amSEA - SJU
1 stop10h 12mUnited Airlines
Wed 12/102:05 amSJU - SEA
1 stop13h 11mUnited Airlines
Deal found 10/26$429
This Kiwi.com deal was found by Cheapflights users on 10/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/59:45 amSEA - SJU
1 stop10h 50mMultiple Airlines
Wed 12/109:15 amSJU - SEA
2 stops30h 38mMultiple Airlines
Deal found 10/26$431
This Kiwi.com deal was found by Cheapflights users on 10/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/72:25 pmSEA - SJU
2 stops20h 46mMultiple Airlines
Thu 12/111:27 pmSJU - SEA
1 stop23h 19mMultiple Airlines
Deal found 10/26$432
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/201:01 pmSEA - SJU
2 stops18h 26mMultiple Airlines
Sun 11/236:00 amSJU - SEA
1 stop30h 27mMultiple Airlines
Deal found 10/28$440

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 October 28, 2025.
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

Sun 12/7

11:00 pm-2:14 pm

1 stop11h 14m

San Juan Luis Munoz Marin Intl

Tue 12/9

3:32 pm-11:58 pm

1 stop12h 26m

$396

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Fri 12/5

8:10 am-10:22 pm

1 stop10h 12m

San Juan Luis Munoz Marin Intl

Wed 12/10

2:05 am-11:16 am

1 stop13h 11m

$429

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Sat 12/6

7:00 am-12:36 am

2 stops13h 36m

San Juan Luis Munoz Marin Intl

Mon 12/8

2:05 am-11:16 am

1 stop13h 11m

$453

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Thu 11/13

6:35 am-10:20 pm

2 stops11h 45m

San Juan Luis Munoz Marin Intl

Wed 11/19

2:05 pm-10:55 pm

2 stops12h 50m

$510

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Sun 12/7

5:00 am-6:25 pm

1 stop9h 25m

San Juan Luis Munoz Marin Intl

Mon 12/15

2:05 am-11:16 am

1 stop13h 11m

$533

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Tue 11/11

9:35 am-12:35 am

2 stops11h 00m

San Juan Luis Munoz Marin Intl

Tue 11/18

11:20 am-10:55 pm

2 stops15h 35m

$543

SeattleAguadilla

SEA - BQN

SEABQN

Seattle/Tacoma Intl

Thu 12/4

7:00 am-11:57 pm

2 stops12h 57m

Aguadilla Borinquen

Thu 12/11

1:09 am-4:07 pm

2 stops18h 58m

$549

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Fri 11/14

6:35 am-10:20 pm

2 stops11h 45m

San Juan Luis Munoz Marin Intl

Tue 11/18

11:20 am-9:50 pm

2 stops14h 30m

$557

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Mon 1/12

12:25 pm-1:17 pm

2 stops20h 52m

San Juan Luis Munoz Marin Intl

Tue 1/27

2:05 am-4:01 pm

2 stops17h 56m

$565

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Wed 11/12

9:35 am-12:35 am

2 stops11h 00m

San Juan Luis Munoz Marin Intl

Sat 11/15

11:25 am-9:00 pm

2 stops13h 35m

$591

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

Showing 1-10 of 36 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 $321). Flying from Seattle to Puerto Rico in July is currently the most expensive (average of $479). 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.

What is the cheapest time of day to fly from SEA to PR?

Find hourly flight availability from Seattle to Puerto Rico. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 28, 2025.

When flying from Seattle to Puerto Rico, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 47% versus a flight in the morning.

What is the cheapest day to fly from Seattle to Puerto Rico?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Puerto Rico. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Seattle to Puerto Rico flight should consider departing on Sunday at noon when fares are most often at their lowest. Friday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 October 28, 2025.
Read reviews from past customers who have flown Delta, United Airlines, and American 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.
Delta
7.9
Good
7,994 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

7.9

Food

7.3

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Delta
7.9
Good
7,994 reviews
Delta
7.9
Good
7,994 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

7.9

Food

7.3

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
United Airlines
7.4
Good
9,001 reviews
Delta
7.9
Good
7,994 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

7.9

Food

7.3

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
American Airlines
7.2
Good
11,032 reviews
Delta
7.9
Good
7,994 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

7.9

Food

7.3

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
JetBlue
7.2
Good
2,908 reviews
Delta
7.9
Good
7,994 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

7.9

Food

7.3

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Spirit Airlines
6.3
Okay
8,116 reviews
Delta
7.9
Good
7,994 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

7.9

Food

7.3

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.

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 12m. Fly via Delta, United Airlines, or Southwest to get the fastest option. There are 3723 mi between Seattle and Puerto Rico. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $173. Users have also found prices from $182 and $296 on American Airlines and United Airlines, 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 - Aguadilla Borinquen and Seattle/Tacoma Intl - Culebra.

  • 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 $321). Flying from Seattle to Puerto Rico in July is currently the most expensive (average of $479). 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

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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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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 October 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$175Average$698FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$218Average$341FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$327Average$556FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$347Average$639FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$351Average$575FlexibilityNo cancel feeOn-time71%
DeltaCheapest$357Average$664FlexibilityNo cancel feeOn-timeN/A
Sun Country AirCheapest$447Average$810FlexibilityNo cancel feeOn-time83%
SouthwestCheapest$521Average$695FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$678Average$880FlexibilityNo cancel feeOn-time75%

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