Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Seattle to Puerto Rico from $141

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 4/25. 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
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Seattle to Puerto Rico

Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
9:20 am - 11:40 pm
SEA
-
SJU
11h 20m
2 stops
Southwest Logo
5:05 am - 6:30 pm
SJU
-
SEA
16h 25m
2 stops
$394Southwest
Tue, Apr 28 - Wed, May 6
United Airlines Logo
8:00 am - 9:24 pm
SEA
-
SJU
10h 24m
1 stop
United Airlines Logo
7:00 am - 6:32 pm
SJU
-
SEA
14h 32m
2 stops
$395United Airlines
Tue, Apr 28 - Wed, May 6
Southwest Logo
6:00 am - 10:40 pm
SEA
-
SJU
13h 40m
2 stops
Southwest Logo
2:00 pm - 12:05 am
SJU
-
SEA
13h 05m
2 stops
$404Southwest
Tue, Apr 28 - Thu, May 14
American Airlines Logo
6:00 am - 11:02 pm
SEA
-
SJU
14h 02m
1 stop
American Airlines Logo
3:08 pm - 12:36 am
SJU
-
SEA
12h 28m
1 stop
$405American Airlines
Wed, Apr 29 - Thu, May 14
American Airlines Logo
10:16 pm - 6:10 pm
SEA
-
SJU
16h 54m
1 stop
American Airlines Logo
6:00 am - 9:23 pm
SJU
-
SEA
18h 23m
1 stop
$409American Airlines
Mon, Apr 13 - Wed, Apr 15
American Airlines Logo
12:34 am - 3:59 pm
SEA
-
SJU
12h 25m
2 stops
American Airlines Logo
6:00 am - 11:42 pm
SJU
-
SEA
20h 42m
1 stop
$414American Airlines
Mon, Aug 17 - Tue, Aug 25
American Airlines Logo
10:25 am - 11:02 pm
SEA
-
SJU
9h 37m
1 stop
American Airlines Logo
11:59 pm - 9:35 am
SJU
-
SEA
12h 36m
1 stop
$415American Airlines
Tue, Apr 28 - Thu, May 14
American Airlines Logo
10:16 pm - 6:10 pm
SEA
-
SJU
16h 54m
1 stop
American Airlines Logo
11:59 pm - 9:35 am
SJU
-
SEA
12h 36m
1 stop
$423American Airlines
Wed, Apr 29 - Thu, May 14
United Airlines Logo
8:00 am - 9:24 pm
SEA
-
SJU
10h 24m
1 stop
United Airlines Logo
7:00 am - 6:35 pm
SJU
-
SEA
14h 35m
2 stops
$427United Airlines
Sat, Apr 18 - Sat, Apr 25
JetBlue Logo
11:59 pm - 1:46 am
SEA
-
BQN
22h 47m
1 stop
JetBlue Logo
5:33 am - 8:24 pm
BQN
-
SEA
17h 51m
1 stop
$677JetBlue
Fri, May 15 - Sun, May 24

United Airlines flights from Seattle to Puerto Rico

Our best United Airlines deals on Seattle to Puerto Rico flight tickets
United Airlines
Apr 28
SEA7:00 amSeattle/Tacoma Intl
10h 34m
1 stop
SJU8:34 pmSan Juan Luis Munoz Marin Intl
May 6
SJU1:40 pmSan Juan Luis Munoz Marin Intl
12h 19m
1 stop
SEA10:59 pmSeattle/Tacoma Intl
$395
United Airlines
Apr 18
SEA8:00 amSeattle/Tacoma Intl
10h 24m
1 stop
SJU9:24 pmSan Juan Luis Munoz Marin Intl
Apr 25
SJU7:00 amSan Juan Luis Munoz Marin Intl
14h 35m
2 stops
SEA6:35 pmSeattle/Tacoma Intl
$427
United Airlines
Apr 12
SEA7:05 pmSeattle/Tacoma Intl
14h 29m
2 stops
SJU12:34 pmSan Juan Luis Munoz Marin Intl
Apr 24
SJU3:56 pmSan Juan Luis Munoz Marin Intl
11h 23m
1 stop
SEA12:19 amSeattle/Tacoma Intl
$448

Southwest flights from Seattle to Puerto Rico

Our best Southwest deals on Seattle to Puerto Rico flight tickets
Southwest
Apr 28
SEA9:20 amSeattle/Tacoma Intl
11h 20m
2 stops
SJU11:40 pmSan Juan Luis Munoz Marin Intl
May 6
SJU5:05 amSan Juan Luis Munoz Marin Intl
16h 25m
2 stops
SEA6:30 pmSeattle/Tacoma Intl
$394
Southwest
Apr 28
SEA6:00 amSeattle/Tacoma Intl
13h 40m
2 stops
SJU10:40 pmSan Juan Luis Munoz Marin Intl
May 14
SJU2:00 pmSan Juan Luis Munoz Marin Intl
13h 05m
2 stops
SEA12:05 amSeattle/Tacoma Intl
$404
Southwest
May 1
SEA11:55 pmSeattle/Tacoma Intl
10h 25m
1 stop
SJU1:20 pmSan Juan Luis Munoz Marin Intl
May 6
SJU5:05 amSan Juan Luis Munoz Marin Intl
16h 25m
2 stops
SEA6:30 pmSeattle/Tacoma Intl
$460

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 27, 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

Tue 4/28

9:20 am-11:40 pm

2 stops11h 20m

San Juan Luis Munoz Marin Intl

Wed 5/6

5:05 am-6:30 pm

2 stops16h 25m

$394

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Tue 4/28

8:00 am-9:24 pm

1 stop10h 24m

San Juan Luis Munoz Marin Intl

Wed 5/6

7:00 am-6:32 pm

2 stops14h 32m

$395

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Tue 4/28

6:00 am-10:40 pm

2 stops13h 40m

San Juan Luis Munoz Marin Intl

Thu 5/14

2:00 pm-12:05 am

2 stops13h 05m

$404

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Wed 4/29

6:00 am-11:02 pm

1 stop14h 02m

San Juan Luis Munoz Marin Intl

Thu 5/14

3:08 pm-12:36 am

1 stop12h 28m

$405

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Mon 4/13

10:16 pm-6:10 pm

1 stop16h 54m

San Juan Luis Munoz Marin Intl

Wed 4/15

6:00 am-9:23 pm

1 stop18h 23m

$409

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Mon 8/17

12:34 am-3:59 pm

2 stops12h 25m

San Juan Luis Munoz Marin Intl

Tue 8/25

6:00 am-11:42 pm

1 stop20h 42m

$414

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Tue 4/28

10:25 am-11:02 pm

1 stop9h 37m

San Juan Luis Munoz Marin Intl

Thu 5/14

11:59 pm-9:35 am

1 stop12h 36m

$415

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Wed 4/29

10:16 pm-6:10 pm

1 stop16h 54m

San Juan Luis Munoz Marin Intl

Thu 5/14

11:59 pm-9:35 am

1 stop12h 36m

$423

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Sat 4/18

8:00 am-9:24 pm

1 stop10h 24m

San Juan Luis Munoz Marin Intl

Sat 4/25

7:00 am-6:35 pm

2 stops14h 35m

$427

SeattleAguadilla

SEA - BQN

SEABQN

Seattle/Tacoma Intl

Fri 5/15

11:59 pm-1:46 am

1 stop22h 47m

Aguadilla Borinquen

Sun 5/24

5:33 am-8:24 pm

1 stop17h 51m

$677

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 January to fly from Seattle, when ticket prices are also cheap, with an average price of $475.

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 $580 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 $504 on momondo.

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

You could potentially save up to 12% 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

9h 38m

Direct flights

None
The fastest flight from Seattle to Puerto Rico takes 9h 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

  • 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
Spirit AirlinesPriceFrom $218Free CancellationRating
6.3
8,493 reviews
Search Spirit Airlines flights
DeltaPriceFrom $224Free CancellationRating
7.9
8,242 reviews
Search Delta flights
JetBluePriceFrom $276Free CancellationRating
7.2
2,896 reviews
Search JetBlue flights
United AirlinesPriceFrom $363Free CancellationRating
7.4
9,349 reviews
Search United Airlines flights
American AirlinesPriceFrom $363Free CancellationRating
7.2
11,357 reviews
Search American Airlines flights
Sun Country AirPriceFrom $454Free CancellationRating
6.8
340 reviews
Search Sun Country Air flights
SouthwestPriceFrom $521Free CancellationRating
8.0
4,301 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $598Free CancellationRating
8.0
11,965 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
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sun 3/29
Sun 4/5
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Puerto Rico

Popular cities in Puerto Rico

Popular flights according to clicks in the last 7 days on momondo
Flights to San Juanfrom $61
Flights to Aguadillafrom $167
Flights to Mayagüezfrom $319