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Cheap flights from Washington to Puerto Rico from $127

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 3/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
6:05 pm - 1:05 pm
SEA
-
SJU
15h 00m2 stops
Delta Logo
7:00 am - 8:46 pm
SJU
-
SEA
17h 46m2 stops
$363Delta
Mon, Jan 12 - Wed, Jan 28
American Airlines Logo
6:12 am - 11:56 pm
SEA
-
SJU
13h 44m1 stop
American Airlines Logo
6:00 am - 3:34 pm
SJU
-
SEA
13h 34m2 stops
$364American Airlines
Fri, Jan 9 - Thu, Jan 15
American Airlines Logo
5:39 am - 11:32 pm
SEA
-
SJU
13h 53m1 stop
American Airlines Logo
6:33 am - 3:57 pm
SJU
-
SEA
12h 24m1 stop
$365American Airlines
Tue, Mar 3 - Wed, Mar 11
United Airlines Logo
7:00 am - 12:36 am
SEA
-
SJU
13h 36m2 stops
United Airlines Logo
8:35 am - 4:01 pm
SJU
-
SEA
11h 26m1 stop
$369United Airlines
Wed, Jan 7 - Wed, Jan 14
American Airlines Logo
7:35 am - 11:59 pm
SEA
-
SJU
12h 24m2 stops
American Airlines Logo
7:07 am - 3:34 pm
SJU
-
SEA
12h 27m1 stop
$370American Airlines
Thu, Jan 22 - Tue, Jan 27
United Airlines Logo
7:00 am - 9:00 pm
SEA
-
SJU
10h 00m1 stop
United Airlines Logo
2:05 am - 11:07 am
SJU
-
SEA
13h 02m1 stop
$398United Airlines
Wed, Jan 14 - Tue, Jan 20
Multiple Airlines Logo
9:54 am - 1:41 am
SEA
-
SJU
11h 47m1 stop
Multiple Airlines Logo
2:59 am - 10:29 pm
SJU
-
SEA
23h 30m1 stop
$422Multiple Airlines
Sat, Jan 24 - Sat, Jan 31
Southwest Logo
3:40 pm - 10:30 am
PDX
-
SJU
14h 50m2 stops
Southwest Logo
6:10 am - 3:40 pm
SJU
-
PDX
13h 30m2 stops
$464Southwest
Thu, Feb 5 - Wed, Feb 11
Southwest Logo
2:45 pm - 11:15 am
GEG
-
SJU
16h 30m2 stops
Southwest Logo
5:40 am - 8:50 pm
SJU
-
GEG
19h 10m2 stops
$481Southwest
Fri, Jan 16 - Thu, Jan 29
Alaska Airlines Logo
8:25 am - 3:12 pm
PSC
-
SJU
26h 47m2 stops
Alaska Airlines Logo
6:00 am - 8:55 pm
SJU
-
PSC
18h 55m2 stops
$691Alaska Airlines
Sun, Feb 22 - Thu, Feb 26

Delta flights from State of Washington to Puerto Rico

Our best Delta deals on State of Washington to Puerto Rico flight tickets
Delta
Jan 12
SEA6:05 pmSeattle/Tacoma Intl
15h 00m
2 stops
SJU1:05 pmSan Juan Luis Munoz Marin Intl
Jan 28
SJU7:00 amSan Juan Luis Munoz Marin Intl
17h 46m
2 stops
SEA8:46 pmSeattle/Tacoma Intl
$363
Find similar
Delta
Jan 13
SEA6:15 amSeattle/Tacoma Intl
13h 30m
1 stop
SJU11:45 pmSan Juan Luis Munoz Marin Intl
Jan 21
SJU2:15 pmSan Juan Luis Munoz Marin Intl
13h 00m
1 stop
SEA11:15 pmSeattle/Tacoma Intl
$426
Find similar
Delta
Jan 12
SEA6:05 pmSeattle/Tacoma Intl
15h 00m
2 stops
SJU1:05 pmSan Juan Luis Munoz Marin Intl
Jan 14
SJU3:20 pmSan Juan Luis Munoz Marin Intl
10h 29m
1 stop
SEA9:49 pmSeattle/Tacoma Intl
$444
Find similar

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
Jan 9
SEA6:12 amSeattle/Tacoma Intl
13h 44m
1 stop
SJU11:56 pmSan Juan Luis Munoz Marin Intl
Jan 15
SJU6:00 amSan Juan Luis Munoz Marin Intl
13h 34m
2 stops
SEA3:34 pmSeattle/Tacoma Intl
$364
Find similar
American Airlines
Mar 3
SEA5:39 amSeattle/Tacoma Intl
13h 53m
1 stop
SJU11:32 pmSan Juan Luis Munoz Marin Intl
Mar 11
SJU6:33 amSan Juan Luis Munoz Marin Intl
12h 24m
1 stop
SEA3:57 pmSeattle/Tacoma Intl
$365
Find similar
American Airlines
Jan 22
SEA7:35 amSeattle/Tacoma Intl
12h 24m
2 stops
SJU11:59 pmSan Juan Luis Munoz Marin Intl
Jan 27
SJU7:07 amSan Juan Luis Munoz Marin Intl
12h 27m
1 stop
SEA3:34 pmSeattle/Tacoma Intl
$370
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 December 18, 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

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Mon 1/12

6:05 pm-1:05 pm

2 stops15h 00m

San Juan Luis Munoz Marin Intl

Wed 1/28

7:00 am-8:46 pm

2 stops17h 46m

$363

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Fri 1/9

6:12 am-11:56 pm

1 stop13h 44m

San Juan Luis Munoz Marin Intl

Thu 1/15

6:00 am-3:34 pm

2 stops13h 34m

$364

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Tue 3/3

5:39 am-11:32 pm

1 stop13h 53m

San Juan Luis Munoz Marin Intl

Wed 3/11

6:33 am-3:57 pm

1 stop12h 24m

$365

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

Wed 1/14

8:35 am-4:01 pm

1 stop11h 26m

$369

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Thu 1/22

7:35 am-11:59 pm

2 stops12h 24m

San Juan Luis Munoz Marin Intl

Tue 1/27

7:07 am-3:34 pm

1 stop12h 27m

$370

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Wed 1/14

7:00 am-9:00 pm

1 stop10h 00m

San Juan Luis Munoz Marin Intl

Tue 1/20

2:05 am-11:07 am

1 stop13h 02m

$398

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Sat 1/24

9:54 am-1:41 am

1 stop11h 47m

San Juan Luis Munoz Marin Intl

Sat 1/31

2:59 am-10:29 pm

1 stop23h 30m

$422

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Thu 2/5

3:40 pm-10:30 am

2 stops14h 50m

San Juan Luis Munoz Marin Intl

Wed 2/11

6:10 am-3:40 pm

2 stops13h 30m

$464

SpokaneSan Juan

GEG - SJU

GEGSJU

Spokane

Fri 1/16

2:45 pm-11:15 am

2 stops16h 30m

San Juan Luis Munoz Marin Intl

Thu 1/29

5:40 am-8:50 pm

2 stops19h 10m

$481

PascoSan Juan

PSC - SJU

PSCSJU

Pasco Tri Cities

Sun 2/22

8:25 am-3:12 pm

2 stops26h 47m

San Juan Luis Munoz Marin Intl

Thu 2/26

6:00 am-8:55 pm

2 stops18h 55m

$691

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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 October, then you should wait until September to fly from State of Washington, 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 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 $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 $487 on momondo.

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

You could potentially save up to 14% 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

  • 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 $175Free CancellationRating
5.8
3,082 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $214Free CancellationRating
6.3
8,190 reviews
Search Spirit Airlines flights
JetBluePriceFrom $327Free CancellationRating
7.2
2,895 reviews
Search JetBlue flights
DeltaPriceFrom $357Free CancellationRating
7.9
8,006 reviews
Search Delta flights
United AirlinesPriceFrom $363Free CancellationRating
7.4
9,092 reviews
Search United Airlines flights
American AirlinesPriceFrom $363Free CancellationRating
7.2
11,053 reviews
Search American Airlines flights
SouthwestPriceFrom $494Free CancellationRating
7.9
4,249 reviews
Search Southwest flights
Sun Country AirPriceFrom $544Free CancellationRating
6.9
333 reviews
Search Sun Country Air flights
Alaska AirlinesPriceFrom $678Free CancellationRating
8.0
11,474 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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