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Cheap flights from Seattle to Puerto Rico from $161

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 4/24. 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

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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.
Delta Logo
11:11 pm - 12:52 pm
SEA
-
SJU
10h 41m
1 stop
Delta Logo
1:25 pm - 10:31 pm
SJU
-
SEA
12h 06m
1 stop
$416Delta
Sat, Apr 25 - Thu, Apr 30
Delta Logo
10:40 pm - 12:12 pm
SEA
-
SJU
10h 32m
1 stop
Delta Logo
7:15 am - 7:59 pm
SJU
-
SEA
15h 44m
1 stop
$435Delta
Mon, Apr 27 - Fri, May 1
United Airlines Logo
6:30 am - 8:38 pm
SEA
-
SJU
11h 08m
1 stop
United Airlines Logo
7:00 am - 6:00 pm
SJU
-
SEA
14h 00m
2 stops
$436United Airlines
Tue, Apr 21 - Tue, Apr 28
American Airlines Logo
10:25 am - 11:02 pm
SEA
-
SJU
9h 37m
1 stop
American Airlines Logo
6:00 am - 9:23 pm
SJU
-
SEA
18h 23m
1 stop
$443American Airlines
Sun, Apr 26 - Sat, May 2
United Airlines Logo
11:59 pm - 3:42 pm
SEA
-
SJU
12h 43m
1 stop
United Airlines Logo
2:55 pm - 10:52 pm
SJU
-
SEA
10h 57m
1 stop
$454United Airlines
Fri, May 1 - Tue, May 5
United Airlines Logo
7:00 am - 8:34 pm
SEA
-
SJU
10h 34m
1 stop
United Airlines Logo
7:20 am - 7:00 pm
SJU
-
SEA
14h 40m
2 stops
$455United Airlines
Tue, Apr 28 - Tue, May 5
American Airlines Logo
12:59 am - 11:02 pm
SEA
-
SJU
19h 03m
1 stop
American Airlines Logo
6:00 am - 9:23 pm
SJU
-
SEA
18h 23m
1 stop
$459American Airlines
Tue, Apr 28 - Tue, May 5
Southwest Logo
6:00 am - 10:40 pm
SEA
-
SJU
13h 40m
2 stops
Southwest Logo
5:35 am - 4:55 pm
SJU
-
SEA
14h 20m
2 stops
$463Southwest
Tue, Apr 28 - Tue, May 5
JetBlue Logo
10:20 pm - 2:22 pm
SEA
-
BQN
13h 02m
1 stop
JetBlue Logo
3:17 pm - 9:05 pm
BQN
-
SEA
32h 48m
1 stop
$849JetBlue
Mon, Aug 24 - Fri, Sep 4
JetBlue Logo
10:20 pm - 2:39 pm
SEA
-
CPX
13h 19m
2 stops
JetBlue Logo
3:05 pm - 10:33 am
CPX
-
SEA
22h 28m
2 stops
$1,145JetBlue
Mon, Jun 22 - Tue, Jun 30

Delta flights from Seattle to Puerto Rico

Our best Delta deals on Seattle to Puerto Rico flight tickets
Delta
Apr 25
SEA11:11 pmSeattle/Tacoma Intl
10h 41m
1 stop
SJU12:52 pmSan Juan Luis Munoz Marin Intl
Apr 30
SJU1:25 pmSan Juan Luis Munoz Marin Intl
12h 06m
1 stop
SEA10:31 pmSeattle/Tacoma Intl
$416
Delta
Apr 27
SEA10:40 pmSeattle/Tacoma Intl
10h 32m
1 stop
SJU12:12 pmSan Juan Luis Munoz Marin Intl
May 1
SJU7:15 amSan Juan Luis Munoz Marin Intl
15h 44m
1 stop
SEA7:59 pmSeattle/Tacoma Intl
$435
Delta
Apr 13
SEA11:14 pmSeattle/Tacoma Intl
10h 38m
1 stop
SJU12:52 pmSan Juan Luis Munoz Marin Intl
Apr 21
SJU7:30 amSan Juan Luis Munoz Marin Intl
19h 29m
2 stops
SEA11:59 pmSeattle/Tacoma Intl
$526

American Airlines flights from Seattle to Puerto Rico

Our best American Airlines deals on Seattle to Puerto Rico flight tickets
American Airlines
Apr 26
SEA10:25 amSeattle/Tacoma Intl
9h 37m
1 stop
SJU11:02 pmSan Juan Luis Munoz Marin Intl
May 2
SJU6:00 amSan Juan Luis Munoz Marin Intl
18h 23m
1 stop
SEA9:23 pmSeattle/Tacoma Intl
$443
American Airlines
Apr 28
SEA12:59 amSeattle/Tacoma Intl
19h 03m
1 stop
SJU11:02 pmSan Juan Luis Munoz Marin Intl
May 5
SJU6:00 amSan Juan Luis Munoz Marin Intl
18h 23m
1 stop
SEA9:23 pmSeattle/Tacoma Intl
$459
American Airlines
Apr 29
SEA6:00 amSeattle/Tacoma Intl
11h 51m
1 stop
SJU8:51 pmSan Juan Luis Munoz Marin Intl
May 6
SJU6:45 amSan Juan Luis Munoz Marin Intl
15h 51m
1 stop
SEA7:36 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 March 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
Quickest round-trip

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Sat 4/25

11:11 pm-12:52 pm

1 stop10h 41m

San Juan Luis Munoz Marin Intl

Thu 4/30

1:25 pm-10:31 pm

1 stop12h 06m

$416

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Mon 4/27

10:40 pm-12:12 pm

1 stop10h 32m

San Juan Luis Munoz Marin Intl

Fri 5/1

7:15 am-7:59 pm

1 stop15h 44m

$435

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Tue 4/21

6:30 am-8:38 pm

1 stop11h 08m

San Juan Luis Munoz Marin Intl

Tue 4/28

7:00 am-6:00 pm

2 stops14h 00m

$436

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Sun 4/26

10:25 am-11:02 pm

1 stop9h 37m

San Juan Luis Munoz Marin Intl

Sat 5/2

6:00 am-9:23 pm

1 stop18h 23m

$443

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Fri 5/1

11:59 pm-3:42 pm

1 stop12h 43m

San Juan Luis Munoz Marin Intl

Tue 5/5

2:55 pm-10:52 pm

1 stop10h 57m

$454

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Tue 4/28

7:00 am-8:34 pm

1 stop10h 34m

San Juan Luis Munoz Marin Intl

Tue 5/5

7:20 am-7:00 pm

2 stops14h 40m

$455

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Tue 4/28

12:59 am-11:02 pm

1 stop19h 03m

San Juan Luis Munoz Marin Intl

Tue 5/5

6:00 am-9:23 pm

1 stop18h 23m

$459

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

Tue 5/5

5:35 am-4:55 pm

2 stops14h 20m

$463

SeattleAguadilla

SEA - BQN

SEABQN

Seattle/Tacoma Intl

Mon 8/24

10:20 pm-2:22 pm

1 stop13h 02m

Aguadilla Borinquen

Fri 9/4

3:17 pm-9:05 pm

1 stop32h 48m

$849

SeattleCulebra

SEA - CPX

SEACPX

Seattle/Tacoma Intl

Mon 6/22

10:20 pm-2:39 pm

2 stops13h 19m

Culebra

Tue 6/30

3:05 pm-10:33 am

2 stops22h 28m

$1,145

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 $465.

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 $578 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 $506 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

10h 25m

Direct flights

None
The fastest flight from Seattle to Puerto Rico takes 10h 25m
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
3,032 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $218Free CancellationRating
6.3
8,516 reviews
Search Spirit Airlines flights
DeltaPriceFrom $224Free CancellationRating
7.9
8,293 reviews
Search Delta flights
JetBluePriceFrom $282Free CancellationRating
7.2
2,906 reviews
Search JetBlue flights
United AirlinesPriceFrom $363Free CancellationRating
7.4
9,428 reviews
Search United Airlines flights
American AirlinesPriceFrom $363Free CancellationRating
7.1
11,472 reviews
Search American Airlines flights
Sun Country AirPriceFrom $454Free CancellationRating
6.8
340 reviews
Search Sun Country Air flights
SouthwestPriceFrom $521Free CancellationRating
8.0
4,318 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $598Free CancellationRating
7.9
12,052 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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