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Cheap flights from Seattle to Puerto Rico from $190

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 9/10. 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.
American Airlines Logo
5:02 pm - 9:24 am
SEA
-
SJU
13h 22m
2 stops
American Airlines Logo
2:22 pm - 10:57 pm
SJU
-
SEA
11h 35m
1 stop
$441American Airlines
Wed, Sep 9 - Tue, Sep 15
American Airlines Logo
5:02 pm - 9:24 am
SEA
-
SJU
13h 22m
2 stops
American Airlines Logo
6:00 am - 7:48 pm
SJU
-
SEA
16h 48m
2 stops
$441American Airlines
Wed, Sep 9 - Wed, Sep 16
Southwest Logo
6:45 pm - 9:10 am
SEA
-
SJU
11h 25m
2 stops
Southwest Logo
6:25 am - 5:00 pm
SJU
-
SEA
13h 35m
2 stops
$460Southwest
Sun, Sep 13 - Sat, Sep 26
Southwest Logo
10:30 pm - 2:30 pm
SEA
-
SJU
13h 00m
1 stop
Southwest Logo
11:45 am - 11:00 pm
SJU
-
SEA
14h 15m
2 stops
$460Southwest
Sun, Sep 13 - Sat, Sep 26
United Airlines Logo
8:00 am - 10:22 pm
SEA
-
SJU
10h 22m
1 stop
United Airlines Logo
8:10 am - 6:59 pm
SJU
-
SEA
14h 49m
2 stops
$489United Airlines
Tue, Jan 19 - Wed, Jan 20
United Airlines Logo
10:58 pm - 1:53 pm
SEA
-
SJU
11h 55m
1 stop
United Airlines Logo
1:00 am - 11:03 am
SJU
-
SEA
13h 03m
1 stop
$489United Airlines
Mon, Sep 14 - Tue, Sep 15
Delta Logo
6:00 am - 11:50 pm
SEA
-
SJU
13h 50m
1 stop
Delta Logo
7:00 am - 7:23 pm
SJU
-
SEA
16h 23m
1 stop
$494Delta
Wed, Jan 20 - Sat, Jan 23
Delta Logo
7:20 am - 11:55 pm
SEA
-
SJU
12h 35m
1 stop
Delta Logo
7:00 am - 7:23 pm
SJU
-
SEA
16h 23m
1 stop
$494Delta
Sat, Jan 23 - Wed, Jan 27
JetBlue Logo
9:40 pm - 1:39 pm
SEA
-
SJU
12h 59m
1 stop
JetBlue Logo
10:30 am - 8:44 pm
SJU
-
SEA
13h 14m
1 stop
$501JetBlue
Thu, Sep 24 - Tue, Sep 29
JetBlue Logo
9:40 pm - 1:39 pm
SEA
-
SJU
12h 59m
1 stop
JetBlue Logo
10:30 am - 8:44 pm
SJU
-
SEA
13h 14m
1 stop
$501JetBlue
Sun, Sep 20 - Thu, Oct 1

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Southwest flights from Seattle to Puerto Rico

Our best Southwest deals on Seattle to Puerto Rico flight tickets
Southwest
Sep 13
SEA10:30 pmSeattle/Tacoma Intl
13h 00m
1 stop
SJU2:30 pmSan Juan Luis Munoz Marin Intl
Sep 26
SJU11:45 amSan Juan Luis Munoz Marin Intl
14h 15m
2 stops
SEA11:00 pmSeattle/Tacoma Intl
$460
Southwest
Sep 15
SEA5:20 amSeattle/Tacoma Intl
12h 40m
2 stops
SJU9:00 pmSan Juan Luis Munoz Marin Intl
Sep 21
SJU5:00 amSan Juan Luis Munoz Marin Intl
12h 55m
2 stops
SEA2:55 pmSeattle/Tacoma Intl
$465
Southwest
Oct 17
SEA6:15 amSeattle/Tacoma Intl
12h 15m
2 stops
SJU9:30 pmSan Juan Luis Munoz Marin Intl
Oct 21
SJU6:35 amSan Juan Luis Munoz Marin Intl
15h 30m
2 stops
SEA7:05 pmSeattle/Tacoma Intl
$475

American Airlines flights from Seattle to Puerto Rico

Our best American Airlines deals on Seattle to Puerto Rico flight tickets
American Airlines
Sep 9
SEA5:02 pmSeattle/Tacoma Intl
13h 22m
2 stops
SJU9:24 amSan Juan Luis Munoz Marin Intl
Sep 16
SJU6:00 amSan Juan Luis Munoz Marin Intl
16h 48m
2 stops
SEA7:48 pmSeattle/Tacoma Intl
$441
American Airlines
Oct 17
SEA11:59 pmSeattle/Tacoma Intl
12h 02m
2 stops
SJU3:01 pmSan Juan Luis Munoz Marin Intl
Oct 21
SJU2:18 pmSan Juan Luis Munoz Marin Intl
12h 41m
1 stop
SEA11:59 pmSeattle/Tacoma Intl
$466
American Airlines
Jan 20
SEA8:35 amSeattle/Tacoma Intl
11h 24m
2 stops
SJU11:59 pmSan Juan Luis Munoz Marin Intl
Jan 26
SJU6:00 amSan Juan Luis Munoz Marin Intl
18h 15m
1 stop
SEA8:15 pmSeattle/Tacoma Intl
$471

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 August 3, 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

Wed 9/9

5:02 pm-9:24 am

2 stops13h 22m

San Juan Luis Munoz Marin Intl

Tue 9/15

2:22 pm-10:57 pm

1 stop11h 35m

$441

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Wed 9/9

5:02 pm-9:24 am

2 stops13h 22m

San Juan Luis Munoz Marin Intl

Wed 9/16

6:00 am-7:48 pm

2 stops16h 48m

$441

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Sun 9/13

6:45 pm-9:10 am

2 stops11h 25m

San Juan Luis Munoz Marin Intl

Sat 9/26

6:25 am-5:00 pm

2 stops13h 35m

$460

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Sun 9/13

10:30 pm-2:30 pm

1 stop13h 00m

San Juan Luis Munoz Marin Intl

Sat 9/26

11:45 am-11:00 pm

2 stops14h 15m

$460

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Tue 1/19

8:00 am-10:22 pm

1 stop10h 22m

San Juan Luis Munoz Marin Intl

Wed 1/20

8:10 am-6:59 pm

2 stops14h 49m

$489

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Mon 9/14

10:58 pm-1:53 pm

1 stop11h 55m

San Juan Luis Munoz Marin Intl

Tue 9/15

1:00 am-11:03 am

1 stop13h 03m

$489

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Wed 1/20

6:00 am-11:50 pm

1 stop13h 50m

San Juan Luis Munoz Marin Intl

Sat 1/23

7:00 am-7:23 pm

1 stop16h 23m

$494

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Sat 1/23

7:20 am-11:55 pm

1 stop12h 35m

San Juan Luis Munoz Marin Intl

Wed 1/27

7:00 am-7:23 pm

1 stop16h 23m

$494

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Thu 9/24

9:40 pm-1:39 pm

1 stop12h 59m

San Juan Luis Munoz Marin Intl

Tue 9/29

10:30 am-8:44 pm

1 stop13h 14m

$501

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Sun 9/20

9:40 pm-1:39 pm

1 stop12h 59m

San Juan Luis Munoz Marin Intl

Thu 10/1

10:30 am-8:44 pm

1 stop13h 14m

$501

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 October, then you should wait until September to fly from Seattle, when ticket prices are also cheap, with an average price of $474.

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 $584 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 $492 on momondo.

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

9h 34m

Direct flights

None
The fastest flight from Seattle to Puerto Rico takes 9h 34m
There are no direct flights from Seattle to Puerto Rico. There are no popular flight routes from Seattle to Puerto Rico.
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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
2,740 reviews
Search Frontier flights
JetBluePriceFrom $327Free CancellationRating
7.2
3,027 reviews
Search JetBlue flights
DeltaPriceFrom $342Free CancellationRating
7.8
8,485 reviews
Search Delta flights
United AirlinesPriceFrom $363Free CancellationRating
7.4
10,058 reviews
Search United Airlines flights
American AirlinesPriceFrom $366Free CancellationRating
7.1
11,842 reviews
Search American Airlines flights
Sun Country AirPriceFrom $454Free CancellationRating
6.7
319 reviews
Search Sun Country Air flights
SouthwestPriceFrom $474Free CancellationRating
8.0
4,227 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $587Free CancellationRating
7.9
12,756 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.
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Wed 9/2
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Find better results for your trip to Puerto Rico

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