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

Frontier, Delta, 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 57% 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 December 2025.

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.

$123 Cheap Flights from Seattle to Puerto Rico in 2025/26

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One-way

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Cheap round-trip flights

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7:00 am - 11:57 pm

SEA

BQN

12h 57m2 stops

1:09 am - 11:32 am

BQN

SEA

14h 23m2 stops

$363United Airlines

Sun, Jan 25 - Tue, Jan 27

7:10 am - 11:57 pm

SEA

SJU

12h 47m1 stop

7:30 am - 2:18 pm

SJU

SEA

10h 48m1 stop

$363Delta

Mon, Jan 12 - Wed, Jan 28

10:08 pm - 9:33 pm

SEA

SJU

19h 25m1 stop

7:00 am - 4:02 pm

SJU

SEA

13h 02m2 stops

$365American Airlines

Sun, Feb 22 - Tue, Feb 24

8:35 am - 11:59 pm

SEA

SJU

11h 24m2 stops

6:00 am - 3:34 pm

SJU

SEA

13h 34m2 stops

$371American Airlines

Sat, Jan 31 - Tue, Feb 3

7:00 am - 9:00 pm

SEA

SJU

10h 00m1 stop

8:10 am - 7:03 pm

SJU

SEA

14h 53m2 stops

$393United Airlines

Mon, Mar 2 - Tue, Mar 3

8:04 am - 9:39 pm

SEA

SJU

9h 35m1 stop

8:20 am - 8:45 pm

SJU

SEA

16h 25m1 stop

$394American Airlines

Thu, Jan 8 - Tue, Jan 13

7:15 am - 5:00 am

SEA

SJU

17h 45m1 stop

6:00 am - 10:15 pm

SJU

SEA

20h 15m1 stop

$402American Airlines

Fri, Feb 20 - Tue, Feb 24

5:00 am - 10:57 pm

SEA

BQN

14h 57m2 stops

12:09 am - 11:10 am

BQN

SEA

14h 01m1 stop

$405United Airlines

Wed, Mar 18 - Tue, Mar 24

7:00 am - 12:36 am

SEA

SJU

13h 36m2 stops

8:35 am - 4:01 pm

SJU

SEA

11h 26m1 stop

$406United Airlines

Wed, Jan 7 - Tue, Jan 13

11:59 pm - 1:47 pm

SEA

SJU

10h 48m1 stop

6:00 am - 8:53 pm

SJU

SEA

17h 53m1 stop

$410JetBlue

Mon, May 18 - Fri, May 29

Delta flights from Seattle to Puerto Rico

Our best Delta deals on Seattle to Puerto Rico flight tickets

Delta

Jan 12

SEA7:10 amSeattle/Tacoma Intl

12h 47m

1 stop

SJU11:57 pmSan Juan Luis Munoz Marin Intl

Jan 28

SJU7:30 amSan Juan Luis Munoz Marin Intl

10h 48m

1 stop

SEA2:18 pmSeattle/Tacoma Intl

$363

Find similar

Delta

Mar 2

SEA7:10 amSeattle/Tacoma Intl

12h 46m

1 stop

SJU11:56 pmSan Juan Luis Munoz Marin Intl

Mar 4

SJU6:15 amSan Juan Luis Munoz Marin Intl

12h 03m

1 stop

SEA2:18 pmSeattle/Tacoma Intl

$444

Find similar

Delta

Dec 13

SEA5:00 pmSeattle/Tacoma Intl

20h 20m

2 stops

SJU5:20 pmSan Juan Luis Munoz Marin Intl

Dec 23

SJU6:30 amSan Juan Luis Munoz Marin Intl

21h 50m

2 stops

SEA12:20 amSeattle/Tacoma Intl

$621

Find similar

Southwest flights from Seattle to Puerto Rico

Our best Southwest deals on Seattle to Puerto Rico flight tickets

Southwest

Mar 2

SEA6:05 amSeattle/Tacoma Intl

14h 35m

2 stops

SJU12:40 amSan Juan Luis Munoz Marin Intl

Mar 3

SJU6:10 amSan Juan Luis Munoz Marin Intl

15h 40m

2 stops

SEA5:50 pmSeattle/Tacoma Intl

$424

Find similar

Southwest

Feb 10

SEA9:55 amSeattle/Tacoma Intl

10h 40m

2 stops

SJU12:35 amSan Juan Luis Munoz Marin Intl

Feb 17

SJU8:00 amSan Juan Luis Munoz Marin Intl

14h 40m

2 stops

SEA6:40 pmSeattle/Tacoma Intl

$505

Find similar

Southwest

Feb 26

SEA4:30 pmSeattle/Tacoma Intl

13h 25m

2 stops

SJU9:55 amSan Juan Luis Munoz Marin Intl

Mar 7

SJU11:40 amSan Juan Luis Munoz Marin Intl

15h 15m

2 stops

SEA10:55 pmSeattle/Tacoma Intl

$508

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleAguadilla

SEA - BQN

SEABQN

Seattle/Tacoma Intl

Sun 1/25

7:00 am-11:57 pm

2 stops12h 57m

Aguadilla Borinquen

Tue 1/27

1:09 am-11:32 am

2 stops14h 23m

$363

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Mon 1/12

7:10 am-11:57 pm

1 stop12h 47m

San Juan Luis Munoz Marin Intl

Wed 1/28

7:30 am-2:18 pm

1 stop10h 48m

$363

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Sun 2/22

10:08 pm-9:33 pm

1 stop19h 25m

San Juan Luis Munoz Marin Intl

Tue 2/24

7:00 am-4:02 pm

2 stops13h 02m

$365

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Sat 1/31

8:35 am-11:59 pm

2 stops11h 24m

San Juan Luis Munoz Marin Intl

Tue 2/3

6:00 am-3:34 pm

2 stops13h 34m

$371

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Mon 3/2

7:00 am-9:00 pm

1 stop10h 00m

San Juan Luis Munoz Marin Intl

Tue 3/3

8:10 am-7:03 pm

2 stops14h 53m

$393

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Thu 1/8

8:04 am-9:39 pm

1 stop9h 35m

San Juan Luis Munoz Marin Intl

Tue 1/13

8:20 am-8:45 pm

1 stop16h 25m

$394

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Fri 2/20

7:15 am-5:00 am

1 stop17h 45m

San Juan Luis Munoz Marin Intl

Tue 2/24

6:00 am-10:15 pm

1 stop20h 15m

$402

SeattleAguadilla

SEA - BQN

SEABQN

Seattle/Tacoma Intl

Wed 3/18

5:00 am-10:57 pm

2 stops14h 57m

Aguadilla Borinquen

Tue 3/24

12:09 am-11:10 am

1 stop14h 01m

$405

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Wed 1/7

7:00 am-12:36 am

2 stops13h 36m

San Juan Luis Munoz Marin Intl

Tue 1/13

8:35 am-4:01 pm

1 stop11h 26m

$406

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Mon 5/18

11:59 pm-1:47 pm

1 stop10h 48m

San Juan Luis Munoz Marin Intl

Fri 5/29

6:00 am-8:53 pm

1 stop17h 53m

$410

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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 $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 $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 $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

Fastest flight time	9h 30m
Direct flights	None

The fastest flight from Seattle to Puerto Rico takes 9h 30m

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 December 2025.
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 5.8 3,092 reviews	Search Frontier flights
Spirit Airlines	PriceFrom $214	Free Cancellation	Rating 6.3 8,161 reviews	Search Spirit Airlines flights
JetBlue	PriceFrom $327	Free Cancellation	Rating 7.2 2,899 reviews	Search JetBlue flights
Delta	PriceFrom $357	Free Cancellation	Rating 7.9 8,011 reviews	Search Delta flights
American Airlines	PriceFrom $362	Free Cancellation	Rating 7.2 11,043 reviews	Search American Airlines flights
United Airlines	PriceFrom $363	Free Cancellation	Rating 7.4 9,063 reviews	Search United Airlines flights
Southwest	PriceFrom $521	Free Cancellation	Rating 8.0 4,252 reviews	Search Southwest flights
Sun Country Air	PriceFrom $544	Free Cancellation	Rating 6.9 332 reviews	Search Sun Country Air flights
Alaska Airlines	PriceFrom $678	Free Cancellation	Rating 8.0 11,396 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 $97

Flights to Aguadillafrom $166

Flights to Mayagüezfrom $322

Cheap flights from Seattle to Puerto Rico from $123

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 1/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Seattle to Puerto Rico

Cheap round-trip flights

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Cheap last minute flights

Delta flights from Seattle to Puerto Rico

Our best Delta deals on Seattle to Puerto Rico flight tickets

Southwest flights from Seattle to Puerto Rico

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

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?

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?

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

Frontier, Delta, 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