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Cheap flights from Seattle to Puerto Rico from $165

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 1/9. 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

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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.
Multiple Airlines Logo
6:00 am - 4:13 pmSEA-SJU
30h 13m1 stop
Multiple Airlines Logo
7:10 am - 2:38 pmSJU-SEA
35h 28m2 stops
$413Multiple Airlines
Find Deal
Thu, Dec 4 - Mon, Dec 8
Multiple Airlines Logo
3:40 pm - 12:49 amSEA-SJU
29h 09m2 stops
Multiple Airlines Logo
2:52 pm - 10:48 pmSJU-SEA
11h 56m1 stop
$415Multiple Airlines
Find Deal
Mon, Dec 8 - Fri, Dec 19
Multiple Airlines Logo
11:01 am - 12:49 amSEA-SJU
57h 48m3 stops
Multiple Airlines Logo
11:05 am - 10:27 pmSJU-SEA
39h 22m2 stops
$416Multiple Airlines
Find Deal
Thu, Dec 4 - Mon, Dec 8
American Airlines Logo
12:59 am - 11:33 pmSEA-SJU
18h 34m1 stop
American Airlines Logo
9:25 am - 10:01 pmSJU-SEA
16h 36m1 stop
$423American Airlines
Find Deal
Sun, Mar 1 - Tue, Mar 3
American Airlines Logo
6:00 am - 10:26 pmSEA-SJU
12h 26m2 stops
American Airlines Logo
7:00 am - 11:42 pmSJU-SEA
20h 42m1 stop
$425American Airlines
Find Deal
Tue, Feb 10 - Tue, Feb 17
United Airlines Logo
5:00 am - 10:22 pmSEA-SJU
13h 22m2 stops
United Airlines Logo
2:05 am - 11:10 amSJU-SEA
13h 05m1 stop
$426United Airlines
Find Deal
Wed, Feb 4 - Wed, Feb 11
American Airlines Logo
8:35 am - 11:59 pmSEA-SJU
11h 24m2 stops
American Airlines Logo
7:00 am - 3:58 pmSJU-SEA
12h 58m2 stops
$428American Airlines
Find Deal
Mon, Feb 9 - Thu, Feb 19
American Airlines Logo
12:59 am - 3:13 pmSEA-SJU
10h 14m1 stop
American Airlines Logo
1:45 pm - 11:21 pmSJU-SEA
12h 36m1 stop
$429American Airlines
Find Deal
Tue, Mar 3 - Tue, Mar 10
United Airlines Logo
7:00 am - 11:57 pmSEA-BQN
12h 57m2 stops
United Airlines Logo
1:09 am - 11:07 amBQN-SEA
13h 58m1 stop
$453United Airlines
Find Deal
Sun, Jan 25 - Wed, Jan 28
United Airlines Logo
5:00 am - 11:57 pmSEA-BQN
14h 57m2 stops
United Airlines Logo
1:09 am - 11:07 amBQN-SEA
13h 58m1 stop
$484United Airlines
Find Deal
Thu, Jan 8 - Mon, Jan 12

American Airlines flights from Seattle to Puerto Rico

Our best American Airlines deals on Seattle to Puerto Rico flight tickets
American Airlines
Mar 1
SEA12:59 amSeattle/Tacoma Intl
18h 34m
1 stop
SJU11:33 pmSan Juan Luis Munoz Marin Intl
Mar 3
SJU9:25 amSan Juan Luis Munoz Marin Intl
16h 36m
1 stop
SEA10:01 pmSeattle/Tacoma Intl
$423
Find similar
American Airlines
Feb 10
SEA6:00 amSeattle/Tacoma Intl
12h 26m
2 stops
SJU10:26 pmSan Juan Luis Munoz Marin Intl
Feb 17
SJU7:00 amSan Juan Luis Munoz Marin Intl
20h 42m
1 stop
SEA11:42 pmSeattle/Tacoma Intl
$425
Find similar
American Airlines
Feb 9
SEA8:35 amSeattle/Tacoma Intl
11h 24m
2 stops
SJU11:59 pmSan Juan Luis Munoz Marin Intl
Feb 19
SJU7:00 amSan Juan Luis Munoz Marin Intl
12h 58m
2 stops
SEA3:58 pmSeattle/Tacoma Intl
$428
Find similar

United Airlines flights from Seattle to Puerto Rico

Our best United Airlines deals on Seattle to Puerto Rico flight tickets
United Airlines
Feb 4
SEA5:00 amSeattle/Tacoma Intl
13h 22m
2 stops
SJU10:22 pmSan Juan Luis Munoz Marin Intl
Feb 11
SJU2:05 amSan Juan Luis Munoz Marin Intl
13h 05m
1 stop
SEA11:10 amSeattle/Tacoma Intl
$426
Find similar
United Airlines
Jan 8
SEA7:00 amSeattle/Tacoma Intl
10h 00m
1 stop
SJU9:00 pmSan Juan Luis Munoz Marin Intl
Jan 13
SJU2:05 amSan Juan Luis Munoz Marin Intl
15h 52m
2 stops
SEA1:57 pmSeattle/Tacoma Intl
$431
Find similar
United Airlines
Jan 20
SEA5:00 amSeattle/Tacoma Intl
9h 25m
1 stop
SJU6:25 pmSan Juan Luis Munoz Marin Intl
Jan 31
SJU2:05 amSan Juan Luis Munoz Marin Intl
13h 02m
1 stop
SEA11:07 amSeattle/Tacoma Intl
$439
Find similar

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 November 21, 2025.
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

Thu 12/4

6:00 am-4:13 pm

1 stop30h 13m

San Juan Luis Munoz Marin Intl

Mon 12/8

7:10 am-2:38 pm

2 stops35h 28m

$413

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Mon 12/8

3:40 pm-12:49 am

2 stops29h 09m

San Juan Luis Munoz Marin Intl

Fri 12/19

2:52 pm-10:48 pm

1 stop11h 56m

$415

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Thu 12/4

11:01 am-12:49 am

3 stops57h 48m

San Juan Luis Munoz Marin Intl

Mon 12/8

11:05 am-10:27 pm

2 stops39h 22m

$416

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Sun 3/1

12:59 am-11:33 pm

1 stop18h 34m

San Juan Luis Munoz Marin Intl

Tue 3/3

9:25 am-10:01 pm

1 stop16h 36m

$423

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Tue 2/10

6:00 am-10:26 pm

2 stops12h 26m

San Juan Luis Munoz Marin Intl

Tue 2/17

7:00 am-11:42 pm

1 stop20h 42m

$425

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Wed 2/4

5:00 am-10:22 pm

2 stops13h 22m

San Juan Luis Munoz Marin Intl

Wed 2/11

2:05 am-11:10 am

1 stop13h 05m

$426

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Mon 2/9

8:35 am-11:59 pm

2 stops11h 24m

San Juan Luis Munoz Marin Intl

Thu 2/19

7:00 am-3:58 pm

2 stops12h 58m

$428

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Tue 3/3

12:59 am-3:13 pm

1 stop10h 14m

San Juan Luis Munoz Marin Intl

Tue 3/10

1:45 pm-11:21 pm

1 stop12h 36m

$429

SeattleAguadilla

SEA - BQN

SEABQN

Seattle/Tacoma Intl

Sun 1/25

7:00 am-11:57 pm

2 stops12h 57m

Aguadilla Borinquen

Wed 1/28

1:09 am-11:07 am

1 stop13h 58m

$453

SeattleAguadilla

SEA - BQN

SEABQN

Seattle/Tacoma Intl

Thu 1/8

5:00 am-11:57 pm

2 stops14h 57m

Aguadilla Borinquen

Mon 1/12

1:09 am-11:07 am

1 stop13h 58m

$484

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 $447.

What is the cheapest day to depart on your flight to Puerto Rico?

On average, the least expensive day to fly to Puerto Rico from Seattle is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $504. However, this price may fluctuate depending on the airline, the season, and holidays. The most expensive day to fly to Puerto Rico is Friday, with ticket prices averaging around $693.

What is the cheapest time of day to depart on your flight to Puerto Rico?

Our most recent data shows that the best time of day to fly to Puerto Rico is at noon. Flights from Seattle to Puerto Rico during this time can be as low as $465. In contrast, the most expensive time of day to depart to Puerto Rico is in the evening when prices are around $584.

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 $582 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 $510 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

Direct flights

None
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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  • 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
5.8
3,102 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $218Free CancellationRating
6.3
8,157 reviews
Search Spirit Airlines flights
JetBluePriceFrom $327Free CancellationRating
7.2
2,902 reviews
Search JetBlue flights
United AirlinesPriceFrom $347Free CancellationRating
7.4
9,029 reviews
Search United Airlines flights
American AirlinesPriceFrom $352Free CancellationRating
7.2
11,047 reviews
Search American Airlines flights
DeltaPriceFrom $357Free CancellationRating
7.9
8,002 reviews
Search Delta flights
Sun Country AirPriceFrom $447Free CancellationRating
6.9
334 reviews
Search Sun Country Air flights
SouthwestPriceFrom $521Free CancellationRating
8.0
4,251 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $678Free CancellationRating
8.0
11,326 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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Popular flights according to clicks in the last 7 days on momondo
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