What is the cheapest airline that flies from Seattle/Tacoma Intl to Puerto Rico?

JetBlue, United Airlines, and American Airlines are the most popular carriers operating from Seattle/Tacoma Intl to Puerto Rico

What airlines fly to Puerto Rico?

American Airlines, United Airlines and Delta are the top three most popular airlines that fly to Puerto Rico from Seattle according to our data. American Airlines is the first choice among our users, with 58% of people opting to fly with this airline when traveling to Puerto Rico. Keep in mind that there are 9 different airlines that fly to Puerto Rico on a routine basis, so you have a few additional options to choose from.

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?

The number of operators available for flights from Seattle/Tacoma Intl Airport to Puerto Rico is 9 as of January 2026.

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.

$139 Cheap Flights from Seattle to Puerto Rico in 2026

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Find the cheapest flights from Seattle to Puerto Rico

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:13 pm - 10:00 am

SEA

SJU

11h 47m

2 stops

5:25 pm - 12:24 am

SJU

SEA

10h 59m

1 stop

$379American Airlines

lun., mar. 2 - mar., mar. 3

11:57 pm - 3:49 pm

SEA

SJU

11h 52m

2 stops

5:25 pm - 12:24 am

SJU

SEA

10h 59m

1 stop

$384American Airlines

dom., feb. 22 - mar., mar. 3

6:45 am - 12:35 am

SEA

SJU

13h 50m

2 stops

10:20 am - 9:50 pm

SJU

SEA

15h 30m

2 stops

$424Southwest

mié., feb. 25 - mié., mar. 4

7:29 pm - 1:17 pm

SEA

SJU

13h 48m

2 stops

2:05 am - 11:14 am

SJU

SEA

13h 09m

1 stop

$426United Airlines

sáb., feb. 21 - vie., feb. 27

11:59 pm - 2:44 pm

SEA

SJU

11h 45m

1 stop

1:40 pm - 10:59 pm

SJU

SEA

12h 19m

1 stop

$427United Airlines

lun., abr. 27 - lun., may. 4

5:35 pm - 10:35 am

SEA

SJU

14h 00m

2 stops

2:00 pm - 12:05 am

SJU

SEA

13h 05m

2 stops

$428Southwest

lun., abr. 27 - lun., may. 4

6:33 pm - 1:42 pm

SEA

SJU

16h 09m

1 stop

4:10 pm - 7:45 am

SJU

SEA

18h 35m

1 stop

$434Sun Country Air

vie., may. 22 - sáb., may. 30

11:00 pm - 1:45 pm

SEA

SJU

11h 45m

1 stop

7:40 am - 3:48 pm

SJU

SEA

11h 08m

1 stop

$437United Airlines

vie., may. 15 - mié., may. 20

6:13 pm - 10:00 am

SEA

SJU

11h 47m

2 stops

1:58 pm - 11:04 pm

SJU

SEA

13h 06m

2 stops

$439American Airlines

lun., mar. 2 - mar., mar. 3

7:00 am - 8:34 pm

SEA

SJU

10h 34m

1 stop

1:40 pm - 9:06 pm

SJU

SEA

10h 26m

1 stop

$442United Airlines

jue., abr. 9 - jue., abr. 16

United Airlines flights from Seattle to Puerto Rico

Our best United Airlines deals on Seattle to Puerto Rico flight tickets

United Airlines

Feb 21

SEA7:29 pmSeattle/Tacoma Intl

13h 48m

2 stops

SJU1:17 pmSan Juan Luis Munoz Marin Intl

Feb 27

SJU2:05 amSan Juan Luis Munoz Marin Intl

13h 09m

1 stop

SEA11:14 amSeattle/Tacoma Intl

$426

United Airlines

Apr 27

SEA11:59 pmSeattle/Tacoma Intl

11h 45m

1 stop

SJU2:44 pmSan Juan Luis Munoz Marin Intl

May 4

SJU1:40 pmSan Juan Luis Munoz Marin Intl

12h 19m

1 stop

SEA10:59 pmSeattle/Tacoma Intl

$427

United Airlines

May 15

SEA11:00 pmSeattle/Tacoma Intl

11h 45m

1 stop

SJU1:45 pmSan Juan Luis Munoz Marin Intl

May 20

SJU7:40 amSan Juan Luis Munoz Marin Intl

11h 08m

1 stop

SEA3:48 pmSeattle/Tacoma Intl

$437

Southwest flights from Seattle to Puerto Rico

Our best Southwest deals on Seattle to Puerto Rico flight tickets

Southwest

Feb 25

SEA6:45 amSeattle/Tacoma Intl

13h 50m

2 stops

SJU12:35 amSan Juan Luis Munoz Marin Intl

Mar 4

SJU10:20 amSan Juan Luis Munoz Marin Intl

15h 30m

2 stops

SEA9:50 pmSeattle/Tacoma Intl

$424

Southwest

Apr 27

SEA5:35 pmSeattle/Tacoma Intl

14h 00m

2 stops

SJU10:35 amSan Juan Luis Munoz Marin Intl

May 4

SJU2:00 pmSan Juan Luis Munoz Marin Intl

13h 05m

2 stops

SEA12:05 amSeattle/Tacoma Intl

$428

Southwest

Apr 22

SEA6:00 amSeattle/Tacoma Intl

12h 05m

2 stops

SJU9:05 pmSan Juan Luis Munoz Marin Intl

Apr 29

SJU11:25 amSan Juan Luis Munoz Marin Intl

15h 30m

2 stops

SEA11:55 pmSeattle/Tacoma Intl

$448

Fly from

Fly to

Route

Depart

Return

Price

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

lun. 3/2

6:13 pm-10:00 am

2 stops11h 47m

San Juan Luis Munoz Marin Intl

mar. 3/3

5:25 pm-12:24 am

1 stop10h 59m

$379

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

dom. 2/22

11:57 pm-3:49 pm

2 stops11h 52m

San Juan Luis Munoz Marin Intl

mar. 3/3

5:25 pm-12:24 am

1 stop10h 59m

$384

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

mié. 2/25

6:45 am-12:35 am

2 stops13h 50m

San Juan Luis Munoz Marin Intl

mié. 3/4

10:20 am-9:50 pm

2 stops15h 30m

$424

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

sáb. 2/21

7:29 pm-1:17 pm

2 stops13h 48m

San Juan Luis Munoz Marin Intl

vie. 2/27

2:05 am-11:14 am

1 stop13h 09m

$426

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

lun. 4/27

11:59 pm-2:44 pm

1 stop11h 45m

San Juan Luis Munoz Marin Intl

lun. 5/4

1:40 pm-10:59 pm

1 stop12h 19m

$427

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

lun. 4/27

5:35 pm-10:35 am

2 stops14h 00m

San Juan Luis Munoz Marin Intl

lun. 5/4

2:00 pm-12:05 am

2 stops13h 05m

$428

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

vie. 5/22

6:33 pm-1:42 pm

1 stop16h 09m

San Juan Luis Munoz Marin Intl

sáb. 5/30

4:10 pm-7:45 am

1 stop18h 35m

$434

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

vie. 5/15

11:00 pm-1:45 pm

1 stop11h 45m

San Juan Luis Munoz Marin Intl

mié. 5/20

7:40 am-3:48 pm

1 stop11h 08m

$437

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

lun. 3/2

6:13 pm-10:00 am

2 stops11h 47m

San Juan Luis Munoz Marin Intl

mar. 3/3

1:58 pm-11:04 pm

2 stops13h 06m

$439

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

jue. 4/9

7:00 am-8:34 pm

1 stop10h 34m

San Juan Luis Munoz Marin Intl

jue. 4/16

1:40 pm-9:06 pm

1 stop10h 26m

$442

Flights are sorted by cheapest round-trip flights first.

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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

Prices

Airlines

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 $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 $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 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?
The number of operators available for flights from Seattle/Tacoma Intl Airport to Puerto Rico is 9 as of January 2026.
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
Frontier	PriceFrom $175	Free Cancellation	Rating 5.7 3,056 reviews	Search Frontier flights
Spirit Airlines	PriceFrom $191	Free Cancellation	Rating 6.3 8,386 reviews	Search Spirit Airlines flights
JetBlue	PriceFrom $282	Free Cancellation	Rating 7.2 2,890 reviews	Search JetBlue flights
Delta	PriceFrom $342	Free Cancellation	Rating 7.9 8,122 reviews	Search Delta flights
United Airlines	PriceFrom $363	Free Cancellation	Rating 7.4 9,208 reviews	Search United Airlines flights
American Airlines	PriceFrom $363	Free Cancellation	Rating 7.2 11,201 reviews	Search American Airlines flights
Sun Country Air	PriceFrom $454	Free Cancellation	Rating 6.9 343 reviews	Search Sun Country Air flights
Southwest	PriceFrom $521	Free Cancellation	Rating 8.0 4,268 reviews	Search Southwest flights
Alaska Airlines	PriceFrom $626	Free Cancellation	Rating 8.0 11,800 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

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Find better results for your trip to Puerto Rico

Popular cities in Puerto Rico

Flights to San Juanfrom $62

Flights to Aguadillafrom $137

Flights to Mayagüezfrom $280

Cheap flights from Seattle to Puerto Rico from $139

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 2/26. 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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United Airlines flights from Seattle to Puerto Rico

Our best United Airlines deals on Seattle to Puerto Rico flight tickets

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Our best Southwest deals on Seattle to Puerto Rico flight tickets

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Use the filters below to find and compare flights from Seattle to Puerto Rico that are best for you.

See travel insights to Puerto Rico from

How to get the cheapest flight ticket from Seattle to Puerto Rico

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?

What is the cheapest airline that flies from Seattle/Tacoma Intl to Puerto Rico?

JetBlue, United Airlines, and American Airlines are the most popular carriers operating from Seattle/Tacoma Intl to Puerto Rico

What airlines fly to Puerto Rico?

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

Direct flights

When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Puerto Rico?

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?

What documentation or ID do you need to fly to Puerto Rico?

Best airlines flying from Seattle to Puerto Rico

Compare and see reviews for airlines that fly from Seattle to Puerto Rico with momondo

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Puerto Rico?

Can I find flights from Seattle to Puerto Rico with flexible booking policies on momondo?

How can momondo help me find flights from Seattle to Puerto Rico?

I’m not ready to book a flight from Seattle to Puerto Rico right now. Can momondo alert me if 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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

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