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Cheap flights from Seattle to Puerto Rico from $187

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 Puerto Rico departing on 8/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Seattle to Puerto Rico

Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
10:30 pm - 12:50 pm
SEA
-
SJU
11h 20m
1 stop
Southwest Logo
8:20 am - 5:55 pm
SJU
-
SEA
12h 35m
2 stops
$436Southwest
Tue, Sep 1 - Wed, Sep 9
Southwest Logo
6:15 pm - 11:00 am
SEA
-
SJU
13h 45m
2 stops
Southwest Logo
5:30 am - 3:00 pm
SJU
-
SEA
12h 30m
1 stop
$446Southwest
Mon, Aug 24 - Fri, Aug 28
Southwest Logo
10:30 pm - 12:50 pm
SEA
-
SJU
11h 20m
1 stop
Southwest Logo
10:25 am - 9:30 pm
SJU
-
SEA
14h 05m
2 stops
$450Southwest
Mon, Sep 14 - Sat, Sep 19
United Airlines Logo
5:00 am - 8:24 pm
SEA
-
SJU
12h 24m
2 stops
United Airlines Logo
1:00 pm - 9:21 pm
SJU
-
SEA
12h 21mnonstop
$452United Airlines
Tue, Oct 27 - Tue, Nov 3
Delta Logo
10:40 pm - 12:03 pm
SEA
-
SJU
10h 23m
1 stop
Delta Logo
7:30 am - 8:21 pm
SJU
-
SEA
15h 51m
1 stop
$456Delta
Mon, Sep 21 - Tue, Sep 29
United Airlines Logo
11:59 pm - 3:42 pm
SEA
-
SJU
12h 43m
1 stop
United Airlines Logo
1:00 am - 10:54 am
SJU
-
SEA
12h 54m
1 stop
$459United Airlines
Fri, Sep 25 - Sat, Sep 26
Delta Logo
11:50 pm - 4:33 pm
SEA
-
SJU
13h 43m
2 stops
Delta Logo
7:30 am - 10:05 pm
SJU
-
SEA
17h 35m
2 stops
$460Delta
Sat, Oct 24 - Thu, Oct 29
Delta Logo
7:59 pm - 12:03 pm
SEA
-
SJU
13h 04m
2 stops
Delta Logo
7:00 am - 10:05 pm
SJU
-
SEA
18h 05m
2 stops
$464Delta
Fri, Sep 18 - Sat, Oct 3
United Airlines Logo
5:00 am - 11:09 pm
SEA
-
BQN
15h 09m
2 stops
United Airlines Logo
12:15 am - 3:39 pm
BQN
-
SEA
18h 24m
2 stops
$501United Airlines
Tue, Sep 1 - Mon, Sep 7
United Airlines Logo
5:00 am - 11:09 pm
SEA
-
BQN
15h 09m
2 stops
United Airlines Logo
12:15 am - 11:03 am
BQN
-
SEA
13h 48m
1 stop
$603United Airlines
Tue, Sep 1 - Mon, Sep 7

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United Airlines flights from Seattle to Puerto Rico

Our best United Airlines deals on Seattle to Puerto Rico flight tickets
United Airlines
Oct 27
SEA5:00 amSeattle/Tacoma Intl
12h 24m
2 stops
SJU8:24 pmSan Juan Luis Munoz Marin Intl
Nov 3
SJU1:00 pmSan Juan Luis Munoz Marin Intl
12h 21m
SEA9:21 pmSeattle/Tacoma Intl
$452
United Airlines
Sep 25
SEA11:59 pmSeattle/Tacoma Intl
12h 43m
1 stop
SJU3:42 pmSan Juan Luis Munoz Marin Intl
Sep 26
SJU1:00 amSan Juan Luis Munoz Marin Intl
12h 54m
1 stop
SEA10:54 amSeattle/Tacoma Intl
$459
United Airlines
Aug 23
SEA11:59 pmSeattle/Tacoma Intl
12h 43m
1 stop
SJU3:42 pmSan Juan Luis Munoz Marin Intl
Aug 29
SJU1:00 amSan Juan Luis Munoz Marin Intl
13h 44m
2 stops
SEA11:44 amSeattle/Tacoma Intl
$498

Southwest flights from Seattle to Puerto Rico

Our best Southwest deals on Seattle to Puerto Rico flight tickets
Southwest
Sep 1
SEA10:30 pmSeattle/Tacoma Intl
11h 20m
1 stop
SJU12:50 pmSan Juan Luis Munoz Marin Intl
Sep 9
SJU8:20 amSan Juan Luis Munoz Marin Intl
12h 35m
2 stops
SEA5:55 pmSeattle/Tacoma Intl
$436
Southwest
Aug 24
SEA6:15 pmSeattle/Tacoma Intl
13h 45m
2 stops
SJU11:00 amSan Juan Luis Munoz Marin Intl
Aug 28
SJU5:30 amSan Juan Luis Munoz Marin Intl
12h 30m
1 stop
SEA3:00 pmSeattle/Tacoma Intl
$446
Southwest
Sep 14
SEA11:05 pmSeattle/Tacoma Intl
11h 30m
2 stops
SJU1:35 pmSan Juan Luis Munoz Marin Intl
Sep 19
SJU10:25 amSan Juan Luis Munoz Marin Intl
14h 05m
2 stops
SEA9:30 pmSeattle/Tacoma Intl
$450

momondo 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, momondo users made 832,500 searches. Data last updated July 17, 2026.
Use the filters below to find and compare flights from Seattle to Puerto Rico that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Tue 9/1

10:30 pm-12:50 pm

1 stop11h 20m

San Juan Luis Munoz Marin Intl

Wed 9/9

8:20 am-5:55 pm

2 stops12h 35m

$436

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Mon 8/24

6:15 pm-11:00 am

2 stops13h 45m

San Juan Luis Munoz Marin Intl

Fri 8/28

5:30 am-3:00 pm

1 stop12h 30m

$446

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Mon 9/14

10:30 pm-12:50 pm

1 stop11h 20m

San Juan Luis Munoz Marin Intl

Sat 9/19

10:25 am-9:30 pm

2 stops14h 05m

$450

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Tue 10/27

5:00 am-8:24 pm

2 stops12h 24m

San Juan Luis Munoz Marin Intl

Tue 11/3

1:00 pm-9:21 pm

Nonstop12h 21m

$452

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Mon 9/21

10:40 pm-12:03 pm

1 stop10h 23m

San Juan Luis Munoz Marin Intl

Tue 9/29

7:30 am-8:21 pm

1 stop15h 51m

$456

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Fri 9/25

11:59 pm-3:42 pm

1 stop12h 43m

San Juan Luis Munoz Marin Intl

Sat 9/26

1:00 am-10:54 am

1 stop12h 54m

$459

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Sat 10/24

11:50 pm-4:33 pm

2 stops13h 43m

San Juan Luis Munoz Marin Intl

Thu 10/29

7:30 am-10:05 pm

2 stops17h 35m

$460

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Fri 9/18

7:59 pm-12:03 pm

2 stops13h 04m

San Juan Luis Munoz Marin Intl

Sat 10/3

7:00 am-10:05 pm

2 stops18h 05m

$464

SeattleAguadilla

SEA - BQN

SEABQN

Seattle/Tacoma Intl

Tue 9/1

5:00 am-11:09 pm

2 stops15h 09m

Aguadilla Borinquen

Mon 9/7

12:15 am-3:39 pm

2 stops18h 24m

$501

SeattleAguadilla

SEA - BQN

SEABQN

Seattle/Tacoma Intl

Tue 9/1

5:00 am-11:09 pm

2 stops15h 09m

Aguadilla Borinquen

Mon 9/7

12:15 am-11:03 am

1 stop13h 48m

$603

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 Puerto Rico from

How to get the cheapest flight ticket from Seattle to Puerto Rico

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 Puerto Rico?

If you don’t want to visit Puerto Rico in May, then you should wait until February to fly from Seattle, when ticket prices are also cheap, with an average price of $182.

How far in advance should I book a flight from Seattle to Puerto Rico?

You are more likely to see cheaper flights to Puerto Rico from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Puerto Rico for around $583 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Puerto Rico from Seattle for as low as $490 on momondo.

Can stopping save me money on Seattle to Puerto Rico flights?

You could potentially save up to 1% on your flight if you consider stops on a Seattle to Puerto Rico flight.

Cheap Seattle to Puerto Rico flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Puerto Rico

Fastest flight time

10h 38m

Direct flights

None
The fastest flight from Seattle to Puerto Rico takes 10h 38m
There are no direct flights from Seattle to Puerto Rico. There are no popular flight routes from Seattle to Puerto Rico.
Search flight deals

Frequently asked questions about flying from Seattle to Puerto Rico

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Puerto Rico?

    Prices for flights from Seattle/Tacoma Intl Airport to Puerto Rico were last updated today.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Puerto Rico.

  • What documentation or ID do you need to fly to Puerto Rico?

    The travel and health documents you'll need for your trip to Puerto Rico may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Puerto Rico. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Seattle to Puerto Rico

Compare and see reviews for airlines that fly from Seattle to Puerto Rico with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $175Free CancellationRating
5.6
2,794 reviews
Search Frontier flights
JetBluePriceFrom $327Free CancellationRating
7.1
3,012 reviews
Search JetBlue flights
DeltaPriceFrom $342Free CancellationRating
7.8
8,476 reviews
Search Delta flights
United AirlinesPriceFrom $363Free CancellationRating
7.4
10,006 reviews
Search United Airlines flights
American AirlinesPriceFrom $366Free CancellationRating
7.1
11,829 reviews
Search American Airlines flights
Sun Country AirPriceFrom $454Free CancellationRating
6.7
324 reviews
Search Sun Country Air flights
SouthwestPriceFrom $474Free CancellationRating
8.0
4,243 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $587Free CancellationRating
7.9
12,670 reviews
Search Alaska Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Puerto Rico?

Finding the right flight to Puerto Rico 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 Puerto Rico quick and easy, saving you time and money.

Can I find flights from Seattle to Puerto Rico with flexible booking policies on momondo?

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

How can momondo help me find flights from Seattle to Puerto Rico?

momondo helps you find the best flight between Seattle and Puerto Rico by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes momondo offers price alerts on flights to Puerto Rico from Seattle. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Puerto Rico trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
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