What is the cheapest airline that flies from Washington to Puerto Rico?

Frontier, United Airlines, and Delta are the most popular carriers operating from Washington 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 State of Washington according to our data. American Airlines is the first choice among our users, with 54% 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.

How long is the flight from State of Washington to Puerto Rico?

Flight times from State of Washington to Puerto Rico vary, but if you’re flying out of Pasco and flying into San Juan Luis Munoz Marin Intl Airport (one of the most popular routes), then the duration is 9h on average. Another popular route from State of Washington to Puerto Rico is flying from Spokane to San Juan Luis Munoz Marin Intl Airport, which will take roughly 9h 38m. Keep in mind that layovers or delays could extend your travel time.

When did momondo last update prices for flights from Washington to Puerto Rico?

Prices for flights from Washington to Puerto Rico are updated daily.

How many operators does momondo search for flights from Washington to Puerto Rico?

As of April 2026, there are 8 operators available to choose from for flights from Washington to Puerto Rico.

How old do you have to be to fly from Washington to Puerto Rico?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington 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.

$138 Cheap Flights from Washington to Puerto Rico in 2026

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Find the cheapest flights from Washington to Puerto Rico

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

11:52 pm - 3:30 pm

SEA

SJU

12h 38m

1 stop

9:52 am - 8:56 pm

SJU

SEA

14h 04m

1 stop

$453JetBlue

Wed, May 27 - Sat, Jun 6

10:30 pm - 1:45 pm

SEA

SJU

12h 15m

2 stops

11:50 am - 11:05 pm

SJU

SEA

14h 15m

2 stops

$454Southwest

Wed, Sep 23 - Wed, Sep 30

5:05 am - 5:38 pm

SEA

SJU

9h 33m

1 stop

7:20 am - 7:00 pm

SJU

SEA

14h 40m

2 stops

$456United Airlines

Sat, May 2 - Tue, May 5

11:30 pm - 1:35 pm

PDX

SJU

11h 05m

2 stops

6:00 am - 4:35 pm

SJU

PDX

13h 35m

2 stops

$466Southwest

Tue, Sep 22 - Mon, Sep 28

7:08 am - 11:50 pm

SEA

SJU

13h 42m

2 stops

3:56 pm - 11:59 pm

SJU

SEA

11h 03m

1 stop

$473United Airlines

Sat, May 2 - Fri, May 8

10:30 pm - 2:30 pm

SEA

SJU

13h 00m

1 stop

12:00 pm - 12:20 am

SJU

SEA

15h 20m

2 stops

$474Southwest

Wed, Sep 23 - Fri, Oct 2

7:30 am - 10:17 pm

SEA

SJU

11h 47m

1 stop

2:35 pm - 12:10 am

SJU

SEA

12h 35m

2 stops

$475Delta

Wed, May 13 - Tue, Jun 2

7:09 am - 11:02 pm

SEA

SJU

12h 53m

1 stop

7:25 am - 9:04 pm

SJU

SEA

16h 39m

1 stop

$480American Airlines

Wed, Apr 29 - Thu, May 14

10:35 pm - 12:57 pm

SEA

SJU

11h 22m

1 stop

7:15 pm - 11:57 am

SJU

SEA

19h 42m

1 stop

$489American Airlines

Sun, May 31 - Mon, Jun 1

11:12 am - 1:43 am

SEA

BQN

35h 31m

2 stops

12:26 pm - 10:22 am

BQN

SEA

24h 56m

2 stops

$586Frontier

Sun, May 3 - Sun, May 10

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United Airlines flights from State of Washington to Puerto Rico

Our best United Airlines deals on State of Washington to Puerto Rico flight tickets

United Airlines

May 2

SEA5:05 amSeattle/Tacoma Intl

9h 33m

1 stop

SJU5:38 pmSan Juan Luis Munoz Marin Intl

May 5

SJU7:20 amSan Juan Luis Munoz Marin Intl

14h 40m

2 stops

SEA7:00 pmSeattle/Tacoma Intl

$456

United Airlines

May 2

SEA7:08 amSeattle/Tacoma Intl

13h 42m

2 stops

SJU11:50 pmSan Juan Luis Munoz Marin Intl

May 8

SJU3:56 pmSan Juan Luis Munoz Marin Intl

11h 03m

1 stop

SEA11:59 pmSeattle/Tacoma Intl

$473

United Airlines

May 2

SEA5:05 amSeattle/Tacoma Intl

9h 33m

1 stop

SJU5:38 pmSan Juan Luis Munoz Marin Intl

May 9

SJU7:20 amSan Juan Luis Munoz Marin Intl

14h 40m

2 stops

SEA7:00 pmSeattle/Tacoma Intl

$474

American Airlines flights from State of Washington to Puerto Rico

Our best American Airlines deals on State of Washington to Puerto Rico flight tickets

American Airlines

Apr 29

SEA7:09 amSeattle/Tacoma Intl

12h 53m

1 stop

SJU11:02 pmSan Juan Luis Munoz Marin Intl

May 14

SJU7:25 amSan Juan Luis Munoz Marin Intl

16h 39m

1 stop

SEA9:04 pmSeattle/Tacoma Intl

$480

American Airlines

May 31

SEA10:35 pmSeattle/Tacoma Intl

11h 22m

1 stop

SJU12:57 pmSan Juan Luis Munoz Marin Intl

Jun 1

SJU7:15 pmSan Juan Luis Munoz Marin Intl

19h 42m

1 stop

SEA11:57 amSeattle/Tacoma Intl

$489

American Airlines

Aug 18

SEA11:16 pmSeattle/Tacoma Intl

13h 47m

2 stops

SJU4:03 pmSan Juan Luis Munoz Marin Intl

Aug 29

SJU6:51 amSan Juan Luis Munoz Marin Intl

17h 06m

1 stop

SEA8:57 pmSeattle/Tacoma Intl

$494

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Wed 5/27

11:52 pm-3:30 pm

1 stop12h 38m

San Juan Luis Munoz Marin Intl

Sat 6/6

9:52 am-8:56 pm

1 stop14h 04m

$453

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Wed 9/23

10:30 pm-1:45 pm

2 stops12h 15m

San Juan Luis Munoz Marin Intl

Wed 9/30

11:50 am-11:05 pm

2 stops14h 15m

$454

Quickest round-trip

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Sat 5/2

5:05 am-5:38 pm

1 stop9h 33m

San Juan Luis Munoz Marin Intl

Tue 5/5

7:20 am-7:00 pm

2 stops14h 40m

$456

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Tue 9/22

11:30 pm-1:35 pm

2 stops11h 05m

San Juan Luis Munoz Marin Intl

Mon 9/28

6:00 am-4:35 pm

2 stops13h 35m

$466

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Sat 5/2

7:08 am-11:50 pm

2 stops13h 42m

San Juan Luis Munoz Marin Intl

Fri 5/8

3:56 pm-11:59 pm

1 stop11h 03m

$473

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Wed 9/23

10:30 pm-2:30 pm

1 stop13h 00m

San Juan Luis Munoz Marin Intl

Fri 10/2

12:00 pm-12:20 am

2 stops15h 20m

$474

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Wed 5/13

7:30 am-10:17 pm

1 stop11h 47m

San Juan Luis Munoz Marin Intl

Tue 6/2

2:35 pm-12:10 am

2 stops12h 35m

$475

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Wed 4/29

7:09 am-11:02 pm

1 stop12h 53m

San Juan Luis Munoz Marin Intl

Thu 5/14

7:25 am-9:04 pm

1 stop16h 39m

$480

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Sun 5/31

10:35 pm-12:57 pm

1 stop11h 22m

San Juan Luis Munoz Marin Intl

Mon 6/1

7:15 pm-11:57 am

1 stop19h 42m

$489

SeattleAguadilla

SEA - BQN

SEABQN

Seattle/Tacoma Intl

Sun 5/3

11:12 am-1:43 am

2 stops35h 31m

Aguadilla Borinquen

Sun 5/10

12:26 pm-10:22 am

2 stops24h 56m

$586

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 State of Washington 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

Other information

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 January to fly from State of Washington, when ticket prices are also cheap, with an average price of $473.

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

You are more likely to see cheaper flights to Puerto Rico from State of Washington 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 State of Washington for as low as $497 on momondo.

Can stopping save me money on State of Washington to Puerto Rico flights?

You could potentially save up to 2% on your flight if you consider stops on a State of Washington to Puerto Rico flight.

Cheap State of Washington to Puerto Rico flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Puerto Rico

Fastest flight time	9h 00m
Direct flights	None

The fastest flight from State of Washington to Puerto Rico takes 9h 00m

There are no direct flights from State of Washington to Puerto Rico. There are no popular flight routes from State of Washington to Puerto Rico.

Search flight deals

Frequently asked questions about flying from Washington to Puerto Rico

When did momondo last update prices for flights from Washington to Puerto Rico?
Prices for flights from Washington to Puerto Rico are updated daily.
How many operators does momondo search for flights from Washington to Puerto Rico?
As of April 2026, there are 8 operators available to choose from for flights from Washington to Puerto Rico.
How old do you have to be to fly from Washington to Puerto Rico?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington 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 State of Washington to Puerto Rico

Compare and see reviews for airlines that fly from State of Washington to Puerto Rico with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $175	Free Cancellation	Rating 5.7 2,987 reviews	Search Frontier flights
JetBlue	PriceFrom $327	Free Cancellation	Rating 7.2 2,945 reviews	Search JetBlue flights
Delta	PriceFrom $342	Free Cancellation	Rating 7.9 8,423 reviews	Search Delta flights
United Airlines	PriceFrom $363	Free Cancellation	Rating 7.4 9,603 reviews	Search United Airlines flights
American Airlines	PriceFrom $363	Free Cancellation	Rating 7.1 11,610 reviews	Search American Airlines flights
Southwest	PriceFrom $434	Free Cancellation	Rating 8.0 4,329 reviews	Search Southwest flights
Sun Country Air	PriceFrom $454	Free Cancellation	Rating 6.8 337 reviews	Search Sun Country Air flights
Alaska Airlines	PriceFrom $587	Free Cancellation	Rating 7.9 12,259 reviews	Search Alaska Airlines flights

Why use momondo?

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

It is quick and easy to find Washington to Puerto Rico flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Puerto Rico that suits you.

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

Yes. All flights to Puerto Rico from Washington on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Washington to Puerto Rico.

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

Price alerts on flights to Puerto Rico from Washington are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Puerto Rico trip

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Popular cities in Puerto Rico

Flights to San Juanfrom $61

Flights to Aguadillafrom $212

Flights to Poncefrom $148

Flights to Viequesfrom $420

Flights to Culebrafrom $446

Flights to Mayagüezfrom $375

Cheap flights from Washington to Puerto Rico from $138

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Puerto Rico departing on 5/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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United Airlines flights from State of Washington to Puerto Rico

Our best United Airlines deals on State of Washington to Puerto Rico flight tickets

American Airlines flights from State of Washington to Puerto Rico

Our best American Airlines deals on State of Washington to Puerto Rico flight tickets

momondo Fare Finder

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

See travel insights to Puerto Rico from

How to get the cheapest flight ticket from State of Washington to Puerto Rico

What is the cheapest month to fly to Puerto Rico?

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

Can stopping save me money on State of Washington to Puerto Rico flights?

What is the cheapest airline that flies from Washington to Puerto Rico?

What airlines fly to Puerto Rico?

How long is the flight from State of Washington to Puerto Rico?

Cheap State of Washington to Puerto Rico flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Puerto Rico

Fastest flight time

Direct flights

Frequently asked questions about flying from Washington to Puerto Rico

Best airlines flying from State of Washington to Puerto Rico

Compare and see reviews for airlines that fly from State of Washington 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

State of Washington 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.

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According to popular flight searches on momondo this year