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Cheap flights from Washington to Puerto Rico from $143

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 11/1. 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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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
12:52 pm - 2:42 pmPDX-SJU
22h 50m2 stops
Frontier Logo
2:11 am - 11:56 amSJU-PDX
13h 45m2 stops
$341Frontier
Find Deal
Sat, Nov 1 - Fri, Nov 7
United Airlines Logo
7:00 am - 11:57 pmSEA-BQN
12h 57m2 stops
United Airlines Logo
1:09 am - 11:32 amBQN-SEA
14h 23m2 stops
$363United Airlines
Find Deal
Wed, Feb 4 - Tue, Feb 10
Multiple Airlines Logo
12:52 pm - 1:32 amPDX-SJU
33h 40m2 stops
Multiple Airlines Logo
5:15 pm - 5:36 pmSJU-PDX
28h 21m1 stop
$366Multiple Airlines
Find Deal
Sat, Nov 1 - Sat, Nov 8
Multiple Airlines Logo
12:58 pm - 1:32 amSEA-SJU
33h 34m2 stops
Multiple Airlines Logo
5:15 pm - 5:15 pmSJU-SEA
28h 00m1 stop
$371Multiple Airlines
Find Deal
Sat, Nov 1 - Sat, Nov 8
Southwest Logo
6:00 am - 12:30 amPDX-SJU
14h 30m2 stops
Southwest Logo
8:55 am - 7:20 pmSJU-PDX
14h 25m2 stops
$375Southwest
Find Deal
Sat, Dec 6 - Tue, Dec 16
JetBlue Logo
11:56 pm - 9:24 pmSEA-SJU
18h 28m1 stop
JetBlue Logo
6:05 pm - 10:36 pmSJU-SEA
31h 31m1 stop
$378JetBlue
Find Deal
Wed, Oct 15 - Wed, Oct 22
American Airlines Logo
3:51 pm - 5:20 amSEA-SJU
9h 29m1 stop
American Airlines Logo
8:20 am - 8:39 pmSJU-SEA
16h 19m1 stop
$406American Airlines
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Thu, Nov 13 - Tue, Nov 18
JetBlue Logo
11:56 pm - 9:24 pmSEA-SJU
18h 28m1 stop
JetBlue Logo
6:00 am - 10:21 pmSJU-SEA
19h 21m1 stop
$412JetBlue
Find Deal
Wed, Oct 15 - Tue, Oct 21
American Airlines Logo
12:33 pm - 11:06 amGEG-SJU
19h 33m2 stops
American Airlines Logo
7:15 am - 4:42 pmSJU-GEG
13h 27m1 stop
$425American Airlines
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Thu, Oct 30 - Tue, Nov 4
Southwest Logo
8:30 am - 12:30 amSEA-SJU
12h 00m2 stops
Southwest Logo
6:15 am - 4:50 pmSJU-SEA
14h 35m2 stops
$449Southwest
Find Deal
Sat, Dec 6 - Sat, Dec 13

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
Feb 4
SEA7:00 amSeattle/Tacoma Intl
12h 57m
2 stops
BQN11:57 pmAguadilla Borinquen
Feb 10
BQN1:09 amAguadilla Borinquen
14h 23m
2 stops
SEA11:32 amSeattle/Tacoma Intl
$363
Find similar
United Airlines
Nov 14
SEA7:00 amSeattle/Tacoma Intl
10h 00m
1 stop
SJU9:00 pmSan Juan Luis Munoz Marin Intl
Nov 18
SJU2:05 amSan Juan Luis Munoz Marin Intl
14h 29m
1 stop
SEA12:34 pmSeattle/Tacoma Intl
$386
Find similar
United Airlines
Nov 8
SEA5:05 amSeattle/Tacoma Intl
9h 20m
1 stop
SJU6:25 pmSan Juan Luis Munoz Marin Intl
Nov 13
SJU2:05 amSan Juan Luis Munoz Marin Intl
14h 34m
1 stop
SEA12:39 pmSeattle/Tacoma Intl
$387
Find similar

Southwest flights from State of Washington to Puerto Rico

Our best Southwest deals on State of Washington to Puerto Rico flight tickets
Southwest
Dec 6
PDX6:00 amPortland
14h 30m
2 stops
SJU12:30 amSan Juan Luis Munoz Marin Intl
Dec 16
SJU8:55 amSan Juan Luis Munoz Marin Intl
14h 25m
2 stops
PDX7:20 pmPortland
$375
Find similar
Southwest
Dec 6
SEA8:30 amSeattle/Tacoma Intl
12h 00m
2 stops
SJU12:30 amSan Juan Luis Munoz Marin Intl
Dec 13
SJU6:15 amSan Juan Luis Munoz Marin Intl
14h 35m
2 stops
SEA4:50 pmSeattle/Tacoma Intl
$449
Find similar
Southwest
Jan 31
PDX5:20 amPortland
12h 10m
2 stops
SJU9:30 pmSan Juan Luis Munoz Marin Intl
Feb 8
SJU6:10 amSan Juan Luis Munoz Marin Intl
13h 30m
2 stops
PDX3:40 pmPortland
$460
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from State of Washington to Puerto Rico that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated October 9, 2025.
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

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Sat 11/1

12:52 pm-2:42 pm

2 stops22h 50m

San Juan Luis Munoz Marin Intl

Fri 11/7

2:11 am-11:56 am

2 stops13h 45m

$341

SeattleAguadilla

SEA - BQN

SEABQN

Seattle/Tacoma Intl

Wed 2/4

7:00 am-11:57 pm

2 stops12h 57m

Aguadilla Borinquen

Tue 2/10

1:09 am-11:32 am

2 stops14h 23m

$363

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Sat 11/1

12:52 pm-1:32 am

2 stops33h 40m

San Juan Luis Munoz Marin Intl

Sat 11/8

5:15 pm-5:36 pm

1 stop28h 21m

$366

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Sat 11/1

12:58 pm-1:32 am

2 stops33h 34m

San Juan Luis Munoz Marin Intl

Sat 11/8

5:15 pm-5:15 pm

1 stop28h 00m

$371

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Sat 12/6

6:00 am-12:30 am

2 stops14h 30m

San Juan Luis Munoz Marin Intl

Tue 12/16

8:55 am-7:20 pm

2 stops14h 25m

$375

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Wed 10/15

11:56 pm-9:24 pm

1 stop18h 28m

San Juan Luis Munoz Marin Intl

Wed 10/22

6:05 pm-10:36 pm

1 stop31h 31m

$378

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Thu 11/13

3:51 pm-5:20 am

1 stop9h 29m

San Juan Luis Munoz Marin Intl

Tue 11/18

8:20 am-8:39 pm

1 stop16h 19m

$406

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Wed 10/15

11:56 pm-9:24 pm

1 stop18h 28m

San Juan Luis Munoz Marin Intl

Tue 10/21

6:00 am-10:21 pm

1 stop19h 21m

$412

SpokaneSan Juan

GEG - SJU

GEGSJU

Spokane

Thu 10/30

12:33 pm-11:06 am

2 stops19h 33m

San Juan Luis Munoz Marin Intl

Tue 11/4

7:15 am-4:42 pm

1 stop13h 27m

$425

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Sat 12/6

8:30 am-12:30 am

2 stops12h 00m

San Juan Luis Munoz Marin Intl

Sat 12/13

6:15 am-4:50 pm

2 stops14h 35m

$449

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Puerto Rico from

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

What is the cheapest month to fly to Puerto Rico?

If you don’t want to visit Puerto Rico in September, then you should wait until October to fly from State of Washington, when ticket prices are also cheap, with an average price of $453.

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 State of Washington 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 State of Washington 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 State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to Puerto Rico for around $588 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 $518 on momondo.

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

You could potentially save up to 22% 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

Direct flights

None
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

  • 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?

  • 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
FrontierPriceFrom $194Free CancellationRating
5.8
3,143 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $233Free CancellationRating
6.3
8,087 reviews
Search Spirit Airlines flights
United AirlinesPriceFrom $320Free CancellationRating
7.4
8,966 reviews
Search United Airlines flights
JetBluePriceFrom $326Free CancellationRating
7.2
2,908 reviews
Search JetBlue flights
American AirlinesPriceFrom $354Free CancellationRating
7.2
11,043 reviews
Search American Airlines flights
DeltaPriceFrom $357Free CancellationRating
7.9
7,971 reviews
Search Delta flights
Sun Country AirPriceFrom $447Free CancellationRating
6.9
335 reviews
Search Sun Country Air flights
SouthwestPriceFrom $470Free CancellationRating
8.0
4,236 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $678Free CancellationRating
8.0
11,049 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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Find better results for your trip to Puerto Rico

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