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Cheap flights from Seattle to Puerto Rico from $147

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 4/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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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
11:57 pm - 3:11 pm
SEA
-
SJU
11h 14m
1 stop
American Airlines Logo
5:25 pm - 12:24 am
SJU
-
SEA
10h 59m
1 stop
$379American Airlines
Mon, Mar 2 - Tue, Mar 3
Delta Logo
11:15 pm - 2:00 pm
SEA
-
SJU
10h 45m
1 stop
Delta Logo
7:30 am - 8:48 pm
SJU
-
SEA
16h 18m
2 stops
$384Delta
Tue, Mar 3 - Tue, Mar 10
Southwest Logo
6:25 pm - 10:30 am
SEA
-
SJU
12h 05m
2 stops
Southwest Logo
10:20 am - 9:50 pm
SJU
-
SEA
15h 30m
2 stops
$404Southwest
Sun, Mar 1 - Wed, Mar 4
United Airlines Logo
7:00 am - 9:00 pm
SEA
-
SJU
10h 00m
1 stop
United Airlines Logo
2:05 am - 11:14 am
SJU
-
SEA
13h 09m
1 stop
$417United Airlines
Mon, Feb 23 - Mon, Feb 23
United Airlines Logo
5:05 am - 5:38 pm
SEA
-
SJU
9h 33m
1 stop
United Airlines Logo
3:56 pm - 11:57 pm
SJU
-
SEA
11h 01m
1 stop
$418United Airlines
Tue, May 5 - Mon, May 11
United Airlines Logo
6:30 am - 8:38 pm
SEA
-
SJU
11h 08m
1 stop
United Airlines Logo
3:56 pm - 11:57 pm
SJU
-
SEA
11h 01m
1 stop
$420United Airlines
Mon, Apr 27 - Mon, May 4
United Airlines Logo
5:00 am - 8:34 pm
SEA
-
SJU
12h 34m
2 stops
United Airlines Logo
1:00 am - 11:39 am
SJU
-
SEA
13h 39m
2 stops
$424United Airlines
Sat, Apr 25 - Fri, May 1
United Airlines Logo
11:59 pm - 2:44 pm
SEA
-
SJU
11h 45m
1 stop
United Airlines Logo
1:00 am - 10:45 am
SJU
-
SEA
12h 45m
1 stop
$426United Airlines
Sat, Apr 18 - Fri, Apr 24
JetBlue Logo
11:59 pm - 1:47 pm
SEA
-
SJU
10h 48m
1 stop
JetBlue Logo
1:45 pm - 10:40 pm
SJU
-
SEA
11h 55m
1 stop
$427JetBlue
Sun, Jun 14 - Sun, Jun 21
Multiple Airlines Logo
8:08 am - 11:58 pm
SEA
-
SJU
12h 50m
1 stop
Multiple Airlines Logo
11:03 am - 10:00 pm
SJU
-
SEA
13h 57m
1 stop
$435Multiple Airlines
Tue, Mar 17 - Thu, Mar 26

American Airlines flights from Seattle to Puerto Rico

Our best American Airlines deals on Seattle to Puerto Rico flight tickets
American Airlines
Mar 2
SEA11:57 pmSeattle/Tacoma Intl
11h 14m
1 stop
SJU3:11 pmSan Juan Luis Munoz Marin Intl
Mar 3
SJU5:25 pmSan Juan Luis Munoz Marin Intl
10h 59m
1 stop
SEA12:24 amSeattle/Tacoma Intl
$379
American Airlines
Mar 23
SEA10:08 pmSeattle/Tacoma Intl
10h 47m
1 stop
SJU11:55 amSan Juan Luis Munoz Marin Intl
Mar 31
SJU6:33 amSan Juan Luis Munoz Marin Intl
12h 24m
1 stop
SEA3:57 pmSeattle/Tacoma Intl
$450
American Airlines
Mar 2
SEA6:13 pmSeattle/Tacoma Intl
11h 47m
2 stops
SJU10:00 amSan Juan Luis Munoz Marin Intl
Mar 3
SJU2:23 pmSan Juan Luis Munoz Marin Intl
12h 44m
2 stops
SEA11:07 pmSeattle/Tacoma Intl
$459

United Airlines flights from Seattle to Puerto Rico

Our best United Airlines deals on Seattle to Puerto Rico flight tickets
United Airlines
Feb 23
SEA7:00 amSeattle/Tacoma Intl
10h 00m
1 stop
SJU9:00 pmSan Juan Luis Munoz Marin Intl
Feb 23
SJU2:05 amSan Juan Luis Munoz Marin Intl
13h 09m
1 stop
SEA11:14 amSeattle/Tacoma Intl
$417
United Airlines
May 5
SEA5:05 amSeattle/Tacoma Intl
9h 33m
1 stop
SJU5:38 pmSan Juan Luis Munoz Marin Intl
May 11
SJU3:56 pmSan Juan Luis Munoz Marin Intl
11h 01m
1 stop
SEA11:57 pmSeattle/Tacoma Intl
$418
United Airlines
Apr 27
SEA6:30 amSeattle/Tacoma Intl
11h 08m
1 stop
SJU8:38 pmSan Juan Luis Munoz Marin Intl
May 4
SJU3:56 pmSan Juan Luis Munoz Marin Intl
11h 01m
1 stop
SEA11:57 pmSeattle/Tacoma Intl
$420

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 February 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

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Mon 3/2

11:57 pm-3:11 pm

1 stop11h 14m

San Juan Luis Munoz Marin Intl

Tue 3/3

5:25 pm-12:24 am

1 stop10h 59m

$379

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Tue 3/3

11:15 pm-2:00 pm

1 stop10h 45m

San Juan Luis Munoz Marin Intl

Tue 3/10

7:30 am-8:48 pm

2 stops16h 18m

$384

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Sun 3/1

6:25 pm-10:30 am

2 stops12h 05m

San Juan Luis Munoz Marin Intl

Wed 3/4

10:20 am-9:50 pm

2 stops15h 30m

$404

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Mon 2/23

7:00 am-9:00 pm

1 stop10h 00m

San Juan Luis Munoz Marin Intl

Mon 2/23

2:05 am-11:14 am

1 stop13h 09m

$417

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Tue 5/5

5:05 am-5:38 pm

1 stop9h 33m

San Juan Luis Munoz Marin Intl

Mon 5/11

3:56 pm-11:57 pm

1 stop11h 01m

$418

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Mon 4/27

6:30 am-8:38 pm

1 stop11h 08m

San Juan Luis Munoz Marin Intl

Mon 5/4

3:56 pm-11:57 pm

1 stop11h 01m

$420

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Sat 4/25

5:00 am-8:34 pm

2 stops12h 34m

San Juan Luis Munoz Marin Intl

Fri 5/1

1:00 am-11:39 am

2 stops13h 39m

$424

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Sat 4/18

11:59 pm-2:44 pm

1 stop11h 45m

San Juan Luis Munoz Marin Intl

Fri 4/24

1:00 am-10:45 am

1 stop12h 45m

$426

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Sun 6/14

11:59 pm-1:47 pm

1 stop10h 48m

San Juan Luis Munoz Marin Intl

Sun 6/21

1:45 pm-10:40 pm

1 stop11h 55m

$427

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Tue 3/17

8:08 am-11:58 pm

1 stop12h 50m

San Juan Luis Munoz Marin Intl

Thu 3/26

11:03 am-10:00 pm

1 stop13h 57m

$435

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 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 $581 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 $498 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

10h 11m

Direct flights

None
The fastest flight from Seattle to Puerto Rico takes 10h 11m
There are no direct flights from Seattle to Puerto Rico. There are no popular flight routes from Seattle to Puerto Rico.
Search flight deals

  • 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
5.7
3,051 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $191Free CancellationRating
6.3
8,396 reviews
Search Spirit Airlines flights
JetBluePriceFrom $282Free CancellationRating
7.2
2,892 reviews
Search JetBlue flights
DeltaPriceFrom $320Free CancellationRating
7.9
8,132 reviews
Search Delta flights
United AirlinesPriceFrom $363Free CancellationRating
7.4
9,231 reviews
Search United Airlines flights
American AirlinesPriceFrom $363Free CancellationRating
7.2
11,213 reviews
Search American Airlines flights
Sun Country AirPriceFrom $454Free CancellationRating
6.9
342 reviews
Search Sun Country Air flights
SouthwestPriceFrom $521Free CancellationRating
8.0
4,272 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $598Free CancellationRating
8.0
11,831 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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Find better results for your trip to Puerto Rico

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