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

Frontier, United Airlines, and Delta 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 61% of people opting to fly with this airline when traveling to Puerto Rico. Keep in mind that there are 8 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 8 as of September 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.

$160 Cheap Flights from Seattle to Puerto Rico in 2026

Discover deals from 900+ travel sites with momondo.

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.

6:22 pm - 9:38 amSEA Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl

11h 16m2 stops Phoenix Sky Harbor Intl Miami

6:30 am - 2:13 pmSJU San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl

11h 43m1 stop Chicago O'Hare Intl

$320American Airlines

Sat, Feb 6 - Wed, Feb 17

9:14 pm - 10:45 amSEA Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl

9h 31m1 stop Miami

3:17 pm - 11:59 pmSJU San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl

12h 42m1 stop Miami

$320American Airlines

Tue, Nov 3 - Fri, Nov 6

9:40 pm - 1:38 pmSEA Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl

12h 58m1 stop New York John F Kennedy Intl

10:35 am - 8:34 pmSJU San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl

12h 59m1 stop New York John F Kennedy Intl

$323JetBlue

Mon, Oct 5 - Sat, Oct 10

9:40 pm - 1:38 pmSEA Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl

12h 58m1 stop New York John F Kennedy Intl

1:00 pm - 9:20 pmSJU San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl

11h 20m1 stop New York John F Kennedy Intl

$325JetBlue

Mon, Oct 5 - Fri, Oct 16

12:10 am - 5:45 pmSEA Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl

14h 35m2 stops Chicago Midway Orlando

10:00 am - 10:40 pmSJU San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl

15h 40m2 stops Orlando Denver Intl

$423Southwest

Mon, Oct 5 - Tue, Oct 13

6:10 am - 9:50 pmSEA Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl

11h 40m2 stops Denver Intl Orlando

12:30 pm - 11:30 pmSJU San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl

15h 00m2 stops Orlando Chicago Midway

$423Southwest

Tue, Nov 17 - Wed, Dec 9

5:50 pm - 3:15 pmSEA Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl

18h 25m1 stop Minneapolis St Paul

3:59 pm - 3:12 pmSJU San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl

26h 13m2 stops Atlanta Hartsfield-Jackson Denver Intl

$441Multiple Airlines

Fri, Oct 16 - Fri, Oct 30

5:50 pm - 3:15 pmSEA Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl

18h 25m1 stop Minneapolis St Paul

7:23 am - 9:45 amSJU San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl

29h 22m2 stops Orlando Las Vegas Harry Reid Intl

$494Multiple Airlines

Fri, Oct 16 - Wed, Oct 28

7:20 am - 11:59 pmSEA Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl

12h 39m1 stop New York John F Kennedy Intl

7:00 am - 7:23 pmSJU San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl

16h 23m1 stop New York John F Kennedy Intl

$506Delta

Fri, Jan 1 - Sat, Jan 16

9:55 pm - 12:00 pmSEA Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl

10h 05m1 stop Atlanta Hartsfield-Jackson

6:15 am - 10:26 pmSJU San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl

20h 11m2 stops Atlanta Hartsfield-Jackson Salt Lake City

$506Delta

Thu, Dec 31 - Sun, Jan 17

Cheap last minute flights

Enter your travel dates to find the best prices.

11:59 pm - 4:49 pmSEA Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl

13h 50m2 stops Minneapolis St Paul Atlanta Hartsfield-Jackson

7:30 am - 10:10 pmSJU San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl

17h 40m2 stops New York John F Kennedy Intl Salt Lake City

$638Delta

Fri, Sep 18 - Sat, Oct 3

11:05 pm - 1:16 pmSEA Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl

11h 11m1 stop Detroit Metropolitan Wayne County

12:56 pm - 9:49 pmSJU San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl

11h 53m1 stop Atlanta Hartsfield-Jackson

$638Delta

Fri, Sep 18 - Sat, Oct 3

10:30 pm - 12:50 pmSEA Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl

11h 20m1 stop Baltimore/Washington

5:00 am - 2:55 pmSJU San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl

12h 55m2 stops Orlando Denver Intl

$662Southwest

Tue, Sep 15 - Mon, Sep 28

11:05 pm - 1:30 pmSEA Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl

11h 25m2 stops Chicago Midway Orlando

1:45 pm - 11:10 pmSJU San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl

12h 25m2 stops Orlando Denver Intl

$662Southwest

Tue, Sep 15 - Tue, Sep 29

7:30 am - 11:50 pmSEA Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl

13h 20m1 stop Newark

7:00 am - 2:52 pmSJU San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl

10h 52m1 stop Houston George Bush Intcntl

$682United Airlines

Tue, Sep 15 - Tue, Sep 22

6:15 pm - 11:57 amSEA Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl

14h 42m2 stops Denver Intl Newark

1:00 am - 8:37 pmSJU San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl

22h 37m3 stops Newark Chicago O'Hare Intl Washington, D.C. Dulles Intl

$703United Airlines

Fri, Sep 18 - Fri, Oct 2

10:45 pm - 1:32 pmSEA Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl

11h 47m1 stop Philadelphia

2:22 pm - 10:57 pmSJU San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl

11h 35m1 stop Philadelphia

$712American Airlines

Tue, Sep 15 - Mon, Sep 28

10:45 pm - 1:32 pmSEA Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl

11h 47m1 stop Philadelphia

2:22 pm - 10:57 pmSJU San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl

11h 35m1 stop Philadelphia

$737American Airlines

Wed, Sep 16 - Mon, Sep 21

4:59 pm - 11:00 amSEA Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl

15h 01m2 stops San Diego Miami

4:38 pm - 2:55 pmSJU San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl

25h 17m3 stops Miami San Diego Portland

$1,403Alaska Airlines

Tue, Sep 15 - Tue, Sep 29

4:59 pm - 11:00 amSEA Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl

15h 01m2 stops San Diego Miami

2:58 pm - 11:45 amSJU San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl

23h 47m3 stops Miami San Diego Portland

$1,431Alaska Airlines

Tue, Sep 15 - Tue, Sep 22

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American Airlines flights from Seattle to Puerto Rico

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

American Airlines

Oct 25

SEA11:59 pmSeattle/Tacoma Intl

11h 04m

1 stop

SJU2:03 pmSan Juan Luis Munoz Marin Intl

Nov 4

SJU11:35 amSan Juan Luis Munoz Marin Intl

14h 36m

2 stops

SEA10:11 pmSeattle/Tacoma Intl

$320

American Airlines

Oct 2

SEA10:45 pmSeattle/Tacoma Intl

11h 47m

1 stop

SJU1:32 pmSan Juan Luis Munoz Marin Intl

Oct 15

SJU3:51 pmSan Juan Luis Munoz Marin Intl

10h 19m

1 stop

SEA11:10 pmSeattle/Tacoma Intl

$321

American Airlines

Nov 17

SEA9:14 pmSeattle/Tacoma Intl

20h 24m

1 stop

SJU9:38 pmSan Juan Luis Munoz Marin Intl

Dec 9

SJU1:53 pmSan Juan Luis Munoz Marin Intl

12h 41m

1 stop

SEA10:34 pmSeattle/Tacoma Intl

$326

Southwest flights from Seattle to Puerto Rico

Our best Southwest deals on Seattle to Puerto Rico flight tickets

Southwest

Oct 5

SEA12:10 amSeattle/Tacoma Intl

14h 35m

2 stops

SJU5:45 pmSan Juan Luis Munoz Marin Intl

Oct 13

SJU10:00 amSan Juan Luis Munoz Marin Intl

15h 40m

2 stops

SEA10:40 pmSeattle/Tacoma Intl

$423

Southwest

Nov 2

SEA12:15 amSeattle/Tacoma Intl

12h 45m

2 stops

SJU5:00 pmSan Juan Luis Munoz Marin Intl

Nov 6

SJU11:20 amSan Juan Luis Munoz Marin Intl

13h 25m

2 stops

SEA8:45 pmSeattle/Tacoma Intl

$427

Southwest

Nov 18

SEA5:15 amSeattle/Tacoma Intl

12h 35m

2 stops

SJU9:50 pmSan Juan Luis Munoz Marin Intl

Nov 25

SJU4:20 pmSan Juan Luis Munoz Marin Intl

13h 20m

2 stops

SEA1:40 amSeattle/Tacoma Intl

$463

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleSan Juan

SEA Seattle/Tacoma Intl - SJU San Juan Luis Munoz Marin Intl

SEASJU

Seattle/Tacoma Intl

Sat 2/6

6:22 pm-9:38 am

2 stops11h 16m

San Juan Luis Munoz Marin Intl

Wed 2/17

6:30 am-2:13 pm

1 stop11h 43m

$320

Quickest round-trip

SeattleSan Juan

SEA Seattle/Tacoma Intl - SJU San Juan Luis Munoz Marin Intl

SEASJU

Seattle/Tacoma Intl

Tue 11/3

9:14 pm-10:45 am

1 stop9h 31m

San Juan Luis Munoz Marin Intl

Fri 11/6

3:17 pm-11:59 pm

1 stop12h 42m

$320

SeattleSan Juan

SEA Seattle/Tacoma Intl - SJU San Juan Luis Munoz Marin Intl

SEASJU

Seattle/Tacoma Intl

Mon 10/5

9:40 pm-1:38 pm

1 stop12h 58m

San Juan Luis Munoz Marin Intl

Sat 10/10

10:35 am-8:34 pm

1 stop12h 59m

$323

SeattleSan Juan

SEA Seattle/Tacoma Intl - SJU San Juan Luis Munoz Marin Intl

SEASJU

Seattle/Tacoma Intl

Mon 10/5

9:40 pm-1:38 pm

1 stop12h 58m

San Juan Luis Munoz Marin Intl

Fri 10/16

1:00 pm-9:20 pm

1 stop11h 20m

$325

SeattleSan Juan

SEA Seattle/Tacoma Intl - SJU San Juan Luis Munoz Marin Intl

SEASJU

Seattle/Tacoma Intl

Mon 10/5

12:10 am-5:45 pm

2 stops14h 35m

San Juan Luis Munoz Marin Intl

Tue 10/13

10:00 am-10:40 pm

2 stops15h 40m

$423

SeattleSan Juan

SEA Seattle/Tacoma Intl - SJU San Juan Luis Munoz Marin Intl

SEASJU

Seattle/Tacoma Intl

Tue 11/17

6:10 am-9:50 pm

2 stops11h 40m

San Juan Luis Munoz Marin Intl

Wed 12/9

12:30 pm-11:30 pm

2 stops15h 00m

$423

SeattleSan Juan

SEA Seattle/Tacoma Intl - SJU San Juan Luis Munoz Marin Intl

SEASJU

Seattle/Tacoma Intl

Fri 10/16

5:50 pm-3:15 pm

1 stop18h 25m

San Juan Luis Munoz Marin Intl

Fri 10/30

3:59 pm-3:12 pm

2 stops26h 13m

$441

SeattleSan Juan

SEA Seattle/Tacoma Intl - SJU San Juan Luis Munoz Marin Intl

SEASJU

Seattle/Tacoma Intl

Fri 10/16

5:50 pm-3:15 pm

1 stop18h 25m

San Juan Luis Munoz Marin Intl

Wed 10/28

7:23 am-9:45 am

2 stops29h 22m

$494

SeattleSan Juan

SEA Seattle/Tacoma Intl - SJU San Juan Luis Munoz Marin Intl

SEASJU

Seattle/Tacoma Intl

Fri 1/1

7:20 am-11:59 pm

1 stop12h 39m

San Juan Luis Munoz Marin Intl

Sat 1/16

7:00 am-7:23 pm

1 stop16h 23m

$506

SeattleSan Juan

SEA Seattle/Tacoma Intl - SJU San Juan Luis Munoz Marin Intl

SEASJU

Seattle/Tacoma Intl

Thu 12/31

9:55 pm-12:00 pm

1 stop10h 05m

San Juan Luis Munoz Marin Intl

Sun 1/17

6:15 am-10:26 pm

2 stops20h 11m

$506

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 January, then you should wait until October to fly from Seattle, when ticket prices are also cheap, with an average price of $494.

How far in advance should I book a flight from Seattle 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 $587 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 $512 on momondo.

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

You could potentially save up to 31% 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

Best Price Found	$160
Fastest flight time	9h 34m
Direct flights	None

The best one-way flight to Puerto Rico from Seattle in the past 72 hours is $160. The best round-trip flight deal from Seattle to Puerto Rico found on momondo in the last 72 hours is $320.

The fastest flight from Seattle to Puerto Rico takes 9h 34m

There are no direct flights from Seattle to Puerto Rico. There are no popular flight routes from Seattle to Puerto Rico.

Search flight deals

Frequently asked questions about flying from Seattle to Puerto Rico

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 8 as of September 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 5.6 2,607 reviews	Search Frontier flights
Delta	PriceFrom $342	Free Cancellation	Rating 7.8 8,561 reviews	Search Delta flights
United Airlines	PriceFrom $363	Free Cancellation	Rating 7.4 10,208 reviews	Search United Airlines flights
American Airlines	PriceFrom $369	Free Cancellation	Rating 7.1 12,048 reviews	Search American Airlines flights
JetBlue	PriceFrom $390	Free Cancellation	Rating 7.1 3,040 reviews	Search JetBlue flights
Sun Country Air	PriceFrom $454	Free Cancellation	Rating 6.7 316 reviews	Search Sun Country Air flights
Southwest	PriceFrom $454	Free Cancellation	Rating 8.0 4,194 reviews	Search Southwest flights
Alaska Airlines	PriceFrom $587	Free Cancellation	Rating 7.9 12,913 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

Other flights from Seattle

Other flights to Puerto Rico

Airlines

Cabin classes

Complete your trip

Feeling lucky

Popular cities in Puerto Rico

Flights to San Juanfrom $120

Flights to Aguadillafrom $176

Flights to Poncefrom $257

Flights to Viequesfrom $513

Flights to Culebrafrom $468

Flights to Mayagüezfrom $333

Cheap flights from Seattle to Puerto Rico from $160

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 9/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from Seattle to Puerto Rico

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

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

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American Airlines flights from Seattle to Puerto Rico

Our best American Airlines 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

momondo Fare Finder

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?

How far in advance should I book a flight from Seattle to Puerto Rico?

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

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

What airlines fly to Puerto Rico?

Cheap Seattle to Puerto Rico flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Seattle 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?

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

Seattle flight routes

According to popular flight searches on momondo this year

Puerto Rico flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to Puerto Rico

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Puerto Rico

List of cabin classes available on flights landing in Puerto Rico. Availability may vary depending on flight origin and airline.

Complete your trip to Puerto Rico

Explore popular destinations other users love

According to popular flight searches on momondo this year