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Cheap flights from Seattle to Puerto Rico from $160

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 1/19. 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
11:34 pm - 3:03 pmSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
11h 29m2 stops Chicago O'Hare Intl Charlotte Douglas
American Airlines Logo
8:30 am - 10:00 pmSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
17h 30m1 stop Philadelphia
$320American Airlines
Tue, Nov 10 - Mon, Nov 16
American Airlines Logo
9:14 pm - 10:44 amSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
9h 30m1 stop Miami
American Airlines Logo
8:30 am - 10:00 pmSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
17h 30m1 stop Philadelphia
$320American Airlines
Tue, Nov 3 - Tue, Nov 10
Southwest Logo
8:55 am - 11:45 pmSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
11h 50m2 stops Austin Bergstrom Orlando
Southwest Logo
1:00 pm - 9:40 pmSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
11h 40m2 stops Tampa Denver Intl
$475Southwest
Tue, Oct 20 - Sat, Oct 24
Delta Logo
10:50 pm - 1:05 pmSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
10h 15m1 stop New York John F Kennedy Intl
Delta Logo
2:05 pm - 11:00 pmSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
12h 55m1 stop New York John F Kennedy Intl
$476Delta
Thu, Nov 12 - Mon, Nov 16
Delta Logo
7:59 pm - 12:03 pmSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
13h 04m2 stops Salt Lake City New York John F Kennedy Intl
Delta Logo
2:59 pm - 11:58 pmSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
11h 59m1 stop Atlanta Hartsfield-Jackson
$476Delta
Fri, Sep 25 - Wed, Sep 30
Southwest Logo
6:35 am - 10:00 pmSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
11h 25m2 stops Chicago Midway Tampa
Southwest Logo
7:35 am - 4:45 pmSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
13h 10m2 stops Tampa Denver Intl
$476Southwest
Mon, Feb 1 - Mon, Feb 8
United Airlines Logo
7:00 am - 11:50 pmSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
13h 50m2 stops Chicago O'Hare Intl Newark
United Airlines Logo
1:21 pm - 11:15 pmSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
12h 54m1 stop Denver Intl
$494United Airlines
Sat, Oct 17 - Sun, Oct 25
United Airlines Logo
5:05 am - 6:25 pmSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
9h 20m1 stop Denver Intl
United Airlines Logo
2:05 am - 11:16 amSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
13h 11m1 stop Newark
$494United Airlines
Thu, Nov 12 - Sat, Nov 14
JetBlue Logo
11:42 pm - 10:27 pmSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
19h 45m1 stop Boston Logan Intl
JetBlue Logo
10:30 am - 8:44 pmSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
13h 14m1 stop New York John F Kennedy Intl
$565JetBlue
Thu, Sep 10 - Tue, Sep 15
JetBlue Logo
11:45 pm - 2:11 pmSEA  Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl
11h 26m1 stop Boston Logan Intl
JetBlue Logo
1:50 pm - 10:53 pmSJU  San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl
12h 03m1 stop Boston Logan Intl
$624JetBlue
Thu, Aug 27 - Wed, Sep 2

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American Airlines flights from Seattle to Puerto Rico

Our best American Airlines deals on Seattle to Puerto Rico flight tickets
American Airlines
Oct 3
SEA3:42 pmSeattle/Tacoma Intl
20h 47m
1 stop
SJU3:29 pmSan Juan Luis Munoz Marin Intl
Oct 5
SJU2:27 pmSan Juan Luis Munoz Marin Intl
11h 32m
1 stop
SEA10:59 pmSeattle/Tacoma Intl
$320
American Airlines
Sep 9
SEA5:02 pmSeattle/Tacoma Intl
13h 22m
2 stops
SJU9:24 amSan Juan Luis Munoz Marin Intl
Sep 16
SJU2:22 pmSan Juan Luis Munoz Marin Intl
11h 35m
1 stop
SEA10:57 pmSeattle/Tacoma Intl
$325
American Airlines
Sep 18
SEA10:36 pmSeattle/Tacoma Intl
13h 14m
1 stop
SJU2:50 pmSan Juan Luis Munoz Marin Intl
Oct 3
SJU3:35 pmSan Juan Luis Munoz Marin Intl
20h 48m
1 stop
SEA9:23 amSeattle/Tacoma Intl
$402

United Airlines flights from Seattle to Puerto Rico

Our best United Airlines deals on Seattle to Puerto Rico flight tickets
United Airlines
Nov 12
SEA5:05 amSeattle/Tacoma Intl
11h 55m
2 stops
SJU9:00 pmSan Juan Luis Munoz Marin Intl
Nov 14
SJU2:05 amSan Juan Luis Munoz Marin Intl
13h 11m
1 stop
SEA11:16 amSeattle/Tacoma Intl
$525
United Airlines
Sep 11
SEA5:00 amSeattle/Tacoma Intl
12h 38m
2 stops
SJU8:38 pmSan Juan Luis Munoz Marin Intl
Sep 18
SJU1:00 amSan Juan Luis Munoz Marin Intl
13h 32m
2 stops
SEA11:32 amSeattle/Tacoma Intl
$552
United Airlines
Dec 6
SEA6:50 amSeattle/Tacoma Intl
13h 07m
1 stop
BQN11:57 pmAguadilla Borinquen
Jan 16
BQN1:09 amAguadilla Borinquen
13h 50m
1 stop
SEA10:59 amSeattle/Tacoma Intl
$629

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 15, 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

SeattleSan Juan

SEA Seattle/Tacoma Intl - SJU San Juan Luis Munoz Marin Intl

SEASJU

Seattle/Tacoma Intl

Tue 11/10

11:34 pm-3:03 pm

2 stops11h 29m

San Juan Luis Munoz Marin Intl

Mon 11/16

8:30 am-10:00 pm

1 stop17h 30m

$320

SeattleSan Juan

SEA Seattle/Tacoma Intl - SJU San Juan Luis Munoz Marin Intl

SEASJU

Seattle/Tacoma Intl

Tue 11/3

9:14 pm-10:44 am

1 stop9h 30m

San Juan Luis Munoz Marin Intl

Tue 11/10

8:30 am-10:00 pm

1 stop17h 30m

$320

SeattleSan Juan

SEA Seattle/Tacoma Intl - SJU San Juan Luis Munoz Marin Intl

SEASJU

Seattle/Tacoma Intl

Tue 10/20

8:55 am-11:45 pm

2 stops11h 50m

San Juan Luis Munoz Marin Intl

Sat 10/24

1:00 pm-9:40 pm

2 stops11h 40m

$475

SeattleSan Juan

SEA Seattle/Tacoma Intl - SJU San Juan Luis Munoz Marin Intl

SEASJU

Seattle/Tacoma Intl

Thu 11/12

10:50 pm-1:05 pm

1 stop10h 15m

San Juan Luis Munoz Marin Intl

Mon 11/16

2:05 pm-11:00 pm

1 stop12h 55m

$476

SeattleSan Juan

SEA Seattle/Tacoma Intl - SJU San Juan Luis Munoz Marin Intl

SEASJU

Seattle/Tacoma Intl

Fri 9/25

7:59 pm-12:03 pm

2 stops13h 04m

San Juan Luis Munoz Marin Intl

Wed 9/30

2:59 pm-11:58 pm

1 stop11h 59m

$476

SeattleSan Juan

SEA Seattle/Tacoma Intl - SJU San Juan Luis Munoz Marin Intl

SEASJU

Seattle/Tacoma Intl

Mon 2/1

6:35 am-10:00 pm

2 stops11h 25m

San Juan Luis Munoz Marin Intl

Mon 2/8

7:35 am-4:45 pm

2 stops13h 10m

$476

SeattleSan Juan

SEA Seattle/Tacoma Intl - SJU San Juan Luis Munoz Marin Intl

SEASJU

Seattle/Tacoma Intl

Sat 10/17

7:00 am-11:50 pm

2 stops13h 50m

San Juan Luis Munoz Marin Intl

Sun 10/25

1:21 pm-11:15 pm

1 stop12h 54m

$494
Quickest round-trip

SeattleSan Juan

SEA Seattle/Tacoma Intl - SJU San Juan Luis Munoz Marin Intl

SEASJU

Seattle/Tacoma Intl

Thu 11/12

5:05 am-6:25 pm

1 stop9h 20m

San Juan Luis Munoz Marin Intl

Sat 11/14

2:05 am-11:16 am

1 stop13h 11m

$494

SeattleSan Juan

SEA Seattle/Tacoma Intl - SJU San Juan Luis Munoz Marin Intl

SEASJU

Seattle/Tacoma Intl

Thu 9/10

11:42 pm-10:27 pm

1 stop19h 45m

San Juan Luis Munoz Marin Intl

Tue 9/15

10:30 am-8:44 pm

1 stop13h 14m

$565

SeattleSan Juan

SEA Seattle/Tacoma Intl - SJU San Juan Luis Munoz Marin Intl

SEASJU

Seattle/Tacoma Intl

Thu 8/27

11:45 pm-2:11 pm

1 stop11h 26m

San Juan Luis Munoz Marin Intl

Wed 9/2

1:50 pm-10:53 pm

1 stop12h 03m

$624

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 $484.

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 $492 on momondo.

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

You could potentially save up to 4% 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 22m

Direct flights

None
The fastest flight from Seattle to Puerto Rico takes 10h 22m
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
2,691 reviews
Search Frontier flights
JetBluePriceFrom $327Free CancellationRating
7.1
3,038 reviews
Search JetBlue flights
DeltaPriceFrom $342Free CancellationRating
7.8
8,508 reviews
Search Delta flights
United AirlinesPriceFrom $363Free CancellationRating
7.4
10,110 reviews
Search United Airlines flights
American AirlinesPriceFrom $364Free CancellationRating
7.1
11,941 reviews
Search American Airlines flights
Sun Country AirPriceFrom $454Free CancellationRating
6.7
318 reviews
Search Sun Country Air flights
SouthwestPriceFrom $454Free CancellationRating
8.0
4,219 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $587Free CancellationRating
7.9
12,811 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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