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

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 Spokane and flying into San Juan Luis Munoz Marin Intl Airport (one of the most popular routes), then the duration is 9h 25m on average. Another popular route from State of Washington to Puerto Rico is flying from Seattle to San Juan Luis Munoz Marin Intl Airport, which will take roughly 10h 45m. Keep in mind that layovers or delays could extend your travel time.

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 56% 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 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 August 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.

$185 Cheap Flights from Washington to Puerto Rico in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Washington to Puerto Rico

Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

5:34 pm - 3:29 pmSEA Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl

18h 55m1 stop Dallas/Fort Worth

3:51 pm - 11:10 pmSJU San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl

10h 19m1 stop Charlotte Douglas

$320American Airlines

Sat, Oct 3 - Sat, Oct 17

11:57 pm - 3:07 pmSEA Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl

12h 10m2 stops Chicago O'Hare Intl Charlotte Douglas

3:51 pm - 11:10 pmSJU San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl

10h 19m1 stop Charlotte Douglas

$320American Airlines

Sat, Oct 3 - Sat, Oct 17

5:10 am - 10:00 pmPDX Portland-SJU San Juan Luis Munoz Marin Intl

12h 50m2 stops Las Vegas Harry Reid Intl Tampa

12:15 pm - 10:20 pmSJU San Juan Luis Munoz Marin Intl-PDX Portland

14h 05m2 stops Orlando Chicago Midway

$461Southwest

Tue, Feb 2 - Tue, Feb 9

5:50 am - 10:05 pmPDX Portland-SJU San Juan Luis Munoz Marin Intl

13h 15m2 stops Las Vegas Harry Reid Intl Orlando

5:00 am - 3:00 pmSJU San Juan Luis Munoz Marin Intl-PDX Portland

13h 00m2 stops Orlando Baltimore/Washington

$481Southwest

Wed, Sep 23 - Thu, Sep 24

7:07 pm - 12:34 pmPDX Portland-SJU San Juan Luis Munoz Marin Intl

14h 27m2 stops Denver Intl Washington, D.C. Dulles Intl

2:55 pm - 10:21 pmSJU San Juan Luis Munoz Marin Intl-PDX Portland

10h 26m1 stop Houston George Bush Intcntl

$481United Airlines

Wed, Sep 23 - Thu, Sep 24

7:10 am - 8:38 pmPDX Portland-SJU San Juan Luis Munoz Marin Intl

10h 28m1 stop Houston George Bush Intcntl

1:00 am - 9:50 amSJU San Juan Luis Munoz Marin Intl-PDX Portland

11h 50m1 stop Newark

$481United Airlines

Wed, Sep 23 - Wed, Sep 23

6:00 am - 12:44 amSEA Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl

14h 44m2 stops Minneapolis St Paul New York John F Kennedy Intl

7:15 am - 5:00 pmSJU San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl

13h 45m2 stops New York John F Kennedy Intl Minneapolis St Paul

$484Delta

Sat, Nov 7 - Sat, Nov 14

10:50 pm - 5:20 pmSEA Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl

14h 30m1 stop New York John F Kennedy Intl

3:35 pm - 11:59 pmSJU San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl

12h 24m1 stop Atlanta Hartsfield-Jackson

$484Delta

Mon, Nov 23 - Fri, Dec 4

2:15 pm - 10:00 amPDX Portland-SJU San Juan Luis Munoz Marin Intl

16h 45m1 stop Boston Logan Intl

1:50 pm - 10:49 pmSJU San Juan Luis Munoz Marin Intl-PDX Portland

11h 59m1 stop Boston Logan Intl

$541JetBlue

Sat, Aug 29 - Thu, Sep 3

11:55 pm - 3:29 pmSEA Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl

12h 34m1 stop Boston Logan Intl

6:00 am - 9:15 pmSJU San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl

18h 15m1 stop New York John F Kennedy Intl

$545JetBlue

Sat, Oct 10 - Sun, Oct 18

Cheap last minute flights

Enter your travel dates to find the best prices.

7:06 pm - 7:32 pmSEA Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl

21h 26m2 stops Denver Intl Orlando

9:02 am - 11:04 amSJU San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl

29h 02m2 stops Orlando Las Vegas Harry Reid Intl

$561Frontier

Wed, Aug 12 - Sat, Aug 15

7:06 pm - 7:42 pmSEA Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl

21h 36m2 stops Denver Intl Orlando

10:48 pm - 10:39 amSJU San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl

38h 51m2 stops Orlando Las Vegas Harry Reid Intl

$566Frontier

Fri, Aug 14 - Mon, Aug 17

3:47 pm - 2:54 pmSEA Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl

20h 07m1 stop Dallas/Fort Worth

12:55 am - 9:29 amSJU San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl

11h 34m1 stop Chicago O'Hare Intl

$657American Airlines

Sat, Aug 15 - Sun, Aug 16

12:40 am - 2:54 pmSEA Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl

11h 14m1 stop Dallas/Fort Worth

6:00 am - 12:20 amSJU San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl

21h 20m1 stop Miami

$662American Airlines

Thu, Aug 13 - Mon, Aug 17

7:10 am - 10:00 pmSEA Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl

11h 50m2 stops Phoenix Sky Harbor Intl Orlando

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

12h 55m2 stops Orlando Denver Intl

$662Southwest

Wed, Aug 12 - Fri, Aug 14

7:10 am - 10:00 pmSEA Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl

11h 50m2 stops Phoenix Sky Harbor Intl Orlando

10:00 am - 8:45 pmSJU San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl

13h 45m2 stops Orlando Denver Intl

$662Southwest

Tue, Aug 11 - Fri, Aug 14

11:59 pm - 3:42 pmSEA Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl

12h 43m1 stop Houston George Bush Intcntl

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

10h 52m1 stop Houston George Bush Intcntl

$712United Airlines

Tue, Aug 11 - Thu, Aug 13

7:00 am - 8:38 pmSEA Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl

10h 38m1 stop Houston George Bush Intcntl

7:00 am - 7:14 pmSJU San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl

15h 14m2 stops Houston George Bush Intcntl Los Angeles

$712United Airlines

Tue, Aug 11 - Thu, Aug 13

7:15 am - 10:29 pmSEA Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl

12h 14m2 stops Salt Lake City Atlanta Hartsfield-Jackson

12:56 pm - 11:57 pmSJU San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl

14h 01m1 stop Atlanta Hartsfield-Jackson

$732Delta

Sat, Aug 15 - Sat, Aug 22

5:30 am - 10:29 pmSEA Seattle/Tacoma Intl-SJU San Juan Luis Munoz Marin Intl

13h 59m2 stops Salt Lake City Atlanta Hartsfield-Jackson

12:56 pm - 10:05 pmSJU San Juan Luis Munoz Marin Intl-SEA Seattle/Tacoma Intl

12h 09m2 stops Atlanta Hartsfield-Jackson Salt Lake City

$952Delta

Sat, Aug 15 - Sat, Aug 22

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Southwest flights from State of Washington to Puerto Rico

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

Southwest

Feb 2

PDX5:10 amPortland

12h 50m

2 stops

SJU10:00 pmSan Juan Luis Munoz Marin Intl

Feb 9

SJU12:15 pmSan Juan Luis Munoz Marin Intl

14h 05m

2 stops

PDX10:20 pmPortland

$461

Southwest

Sep 6

PDX7:30 pmPortland

10h 40m

2 stops

SJU9:10 amSan Juan Luis Munoz Marin Intl

Sep 13

SJU9:25 pmSan Juan Luis Munoz Marin Intl

17h 15m

2 stops

PDX11:40 amPortland

$501

Southwest

Sep 2

SEA5:20 amSeattle/Tacoma Intl

12h 45m

2 stops

SJU9:05 pmSan Juan Luis Munoz Marin Intl

Sep 6

SJU6:00 amSan Juan Luis Munoz Marin Intl

15h 40m

1 stop

SEA6:40 pmSeattle/Tacoma Intl

$510

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

Sep 23

PDX7:10 amPortland

10h 28m

1 stop

SJU8:38 pmSan Juan Luis Munoz Marin Intl

Sep 23

SJU1:00 amSan Juan Luis Munoz Marin Intl

11h 50m

1 stop

PDX9:50 amPortland

$481

United Airlines

Dec 5

SEA6:50 amSeattle/Tacoma Intl

13h 07m

1 stop

BQN11:57 pmAguadilla Borinquen

Dec 11

BQN1:09 amAguadilla Borinquen

16h 11m

2 stops

SEA1:20 pmSeattle/Tacoma Intl

$494

United Airlines

Dec 4

PDX5:15 amPortland

14h 42m

2 stops

BQN11:57 pmAguadilla Borinquen

Dec 5

BQN1:09 amAguadilla Borinquen

14h 44m

2 stops

PDX11:53 amPortland

$496

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

SEASJU

Seattle/Tacoma Intl

Sat 10/3

5:34 pm-3:29 pm

1 stop18h 55m

San Juan Luis Munoz Marin Intl

Sat 10/17

3:51 pm-11:10 pm

1 stop10h 19m

$320

SeattleSan Juan

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

SEASJU

Seattle/Tacoma Intl

Sat 10/3

11:57 pm-3:07 pm

2 stops12h 10m

San Juan Luis Munoz Marin Intl

Sat 10/17

3:51 pm-11:10 pm

1 stop10h 19m

$320

PortlandSan Juan

PDX Portland - SJU San Juan Luis Munoz Marin Intl

PDXSJU

Portland

Tue 2/2

5:10 am-10:00 pm

2 stops12h 50m

San Juan Luis Munoz Marin Intl

Tue 2/9

12:15 pm-10:20 pm

2 stops14h 05m

$461

PortlandSan Juan

PDX Portland - SJU San Juan Luis Munoz Marin Intl

PDXSJU

Portland

Wed 9/23

5:50 am-10:05 pm

2 stops13h 15m

San Juan Luis Munoz Marin Intl

Thu 9/24

5:00 am-3:00 pm

2 stops13h 00m

$481

PortlandSan Juan

PDX Portland - SJU San Juan Luis Munoz Marin Intl

PDXSJU

Portland

Wed 9/23

7:07 pm-12:34 pm

2 stops14h 27m

San Juan Luis Munoz Marin Intl

Thu 9/24

2:55 pm-10:21 pm

1 stop10h 26m

$481

Quickest round-trip

PortlandSan Juan

PDX Portland - SJU San Juan Luis Munoz Marin Intl

PDXSJU

Portland

Wed 9/23

7:10 am-8:38 pm

1 stop10h 28m

San Juan Luis Munoz Marin Intl

Wed 9/23

1:00 am-9:50 am

1 stop11h 50m

$481

SeattleSan Juan

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

SEASJU

Seattle/Tacoma Intl

Sat 11/7

6:00 am-12:44 am

2 stops14h 44m

San Juan Luis Munoz Marin Intl

Sat 11/14

7:15 am-5:00 pm

2 stops13h 45m

$484

SeattleSan Juan

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

SEASJU

Seattle/Tacoma Intl

Mon 11/23

10:50 pm-5:20 pm

1 stop14h 30m

San Juan Luis Munoz Marin Intl

Fri 12/4

3:35 pm-11:59 pm

1 stop12h 24m

$484

PortlandSan Juan

PDX Portland - SJU San Juan Luis Munoz Marin Intl

PDXSJU

Portland

Sat 8/29

2:15 pm-10:00 am

1 stop16h 45m

San Juan Luis Munoz Marin Intl

Thu 9/3

1:50 pm-10:49 pm

1 stop11h 59m

$541

SeattleSan Juan

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

SEASJU

Seattle/Tacoma Intl

Sat 10/10

11:55 pm-3:29 pm

1 stop12h 34m

San Juan Luis Munoz Marin Intl

Sun 10/18

6:00 am-9:15 pm

1 stop18h 15m

$545

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 September to fly from State of Washington, when ticket prices are also cheap, with an average price of $498.

How far in advance should I book a flight from Washington 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 $583 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 $492 on momondo.

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

You could potentially save up to 8% 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 25m
Direct flights	None

The fastest flight from State of Washington to Puerto Rico takes 9h 25m

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 August 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 5.6 2,712 reviews	Search Frontier flights
JetBlue	PriceFrom $327	Free Cancellation	Rating 7.1 3,031 reviews	Search JetBlue flights
Delta	PriceFrom $328	Free Cancellation	Rating 7.8 8,499 reviews	Search Delta flights
United Airlines	PriceFrom $363	Free Cancellation	Rating 7.4 10,100 reviews	Search United Airlines flights
American Airlines	PriceFrom $366	Free Cancellation	Rating 7.1 11,899 reviews	Search American Airlines flights
Southwest	PriceFrom $434	Free Cancellation	Rating 8.0 4,218 reviews	Search Southwest flights
Sun Country Air	PriceFrom $454	Free Cancellation	Rating 6.7 319 reviews	Search Sun Country Air flights
Alaska Airlines	PriceFrom $587	Free Cancellation	Rating 7.9 12,794 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.

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Complete your trip

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Popular cities in Puerto Rico

Flights to San Juanfrom $88

Flights to Aguadillafrom $227

Flights to Poncefrom $229

Flights to Viequesfrom $529

Flights to Culebrafrom $514

Flights to Mayagüezfrom $282

Cheap flights from Washington to Puerto Rico from $185

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 1/19. 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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Southwest flights from State of Washington to Puerto Rico

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

United Airlines flights from State of Washington to Puerto Rico

Our best United 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 from Washington 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

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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Explore popular destinations other users love

According to popular flight searches on momondo this year