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$103+ Cheap flights from Washington to San Juan

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/26. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SJU
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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Cheap flight deals from Washington to San Juan

Keep the following information in mind while searching for Washington to San Juan flight deals. Data was last updated February 20, 2025.

Round-trip from

$331
(CheapOair)

One-way from

$103
(Booking.com)

Popular in

December

Cheapest in

September

Average price

$532
From Washington to San Juan
Search Deals
One-way flight from Washington to San Juan
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($36 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2025
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Find flight deals from Washington to San Juan

Cheapest flights from Washington to San Juan
Explore the most affordable flight options available from Washington to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

This CheapOair deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/57:32 pmPDX - SJU
2 stops13h 17mSpirit Airlines
Mon 3/106:18 amSJU - PDX
2 stops34h 20mSpirit Airlines
Deal found 2/19$331
This CheapOair deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/812:41 pmSEA - SJU
2 stops29h 09mSpirit Airlines
Tue 3/113:38 amSJU - SEA
2 stops35h 08mSpirit Airlines
Deal found 2/20$363
This Mytrip deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/96:33 pmSEA - SJU
2 stops26h 39mMultiple Airlines
Mon 5/123:45 pmSJU - SEA
2 stops23h 57mMultiple Airlines
Deal found 2/20$369
This American Airlines deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1611:10 pmPDX - SJU
1 stop10h 35mAmerican Airlines
Tue 10/76:30 amSJU - PDX
1 stop19h 30mAmerican Airlines
Deal found 2/19$369
This JetBlue deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1811:48 pmSEA - SJU
1 stop11h 42mJetBlue
Wed 3/2611:05 amSJU - SEA
1 stop14h 33mJetBlue
Deal found 2/20$373
This United Airlines deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/187:00 amSEA - SJU
2 stops13h 36mUnited Airlines
Tue 3/251:05 amSJU - SEA
1 stop13h 14mUnited Airlines
Deal found 2/20$379
This American Airlines deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1810:01 pmSEA - SJU
1 stop15h 33mAmerican Airlines
Wed 3/2611:36 amSJU - SEA
1 stop12h 20mAmerican Airlines
Deal found 2/20$382
This Delta deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/2710:45 pmGEG - SJU
1 stop12h 34mDelta
Tue 5/66:35 amSJU - GEG
2 stops15h 09mDelta
Deal found 2/20$405
This United Airlines deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/911:58 pmPDX - SJU
1 stop11h 40mUnited Airlines
Tue 3/111:05 amSJU - PDX
2 stops15h 33mUnited Airlines
Deal found 2/19$432
This American Airlines deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/283:21 pmGEG - SJU
2 stops16h 38mAmerican Airlines
Tue 5/66:20 amSJU - GEG
1 stop17h 53mAmerican Airlines
Deal found 2/19$455
This Delta deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/167:20 pmPDX - SJU
2 stops17h 58mDelta
Sat 10/42:15 pmSJU - PDX
2 stops12h 37mDelta
Deal found 2/19$465
This Mytrip deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/79:25 pmPSC - SJU
3 stops25h 58mMultiple Airlines
Mon 3/1012:30 amSJU - PSC
3 stops36h 00mMultiple Airlines
Deal found 2/20$479

Find flights from Washington to San Juan within your budget

Customize your flight search to find flights from Washington to San Juan 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, Cheapflights users made 2,558,603 searches. Data last updated February 20, 2025.

Fly from

Washington

Fly to

San Juan

Route

Depart

Return

Price

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Wed 3/5

7:32 pm-12:49 pm

2 stops13h 17m

San Juan Luis Munoz Marin Intl

Mon 3/10

6:18 am-1:38 pm

2 stops34h 20m

$331

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Sat 3/8

12:41 pm-9:50 pm

2 stops29h 09m

San Juan Luis Munoz Marin Intl

Tue 3/11

3:38 am-11:46 am

2 stops35h 08m

$363

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Mon 4/7

10:00 pm-8:28 pm

1 stop19h 28m

San Juan Luis Munoz Marin Intl

Wed 4/9

6:21 am-11:28 pm

1 stop20h 07m

$364

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Fri 5/9

6:33 pm-12:12 am

2 stops26h 39m

San Juan Luis Munoz Marin Intl

Mon 5/12

3:45 pm-12:42 pm

2 stops23h 57m

$369

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Tue 3/18

11:48 pm-2:30 pm

1 stop11h 42m

San Juan Luis Munoz Marin Intl

Wed 3/26

11:05 am-10:38 pm

1 stop14h 33m

$373

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Tue 3/18

7:00 am-11:36 pm

2 stops13h 36m

San Juan Luis Munoz Marin Intl

Tue 3/25

1:05 am-11:19 am

1 stop13h 14m

$379

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Tue 3/18

10:01 pm-4:34 pm

1 stop15h 33m

San Juan Luis Munoz Marin Intl

Wed 3/26

11:36 am-8:56 pm

1 stop12h 20m

$382

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Wed 5/7

11:10 am-9:56 am

2 stops19h 46m

San Juan Luis Munoz Marin Intl

Sat 5/17

1:42 pm-9:51 am

2 stops23h 09m

$400

SpokaneSan Juan

GEG - SJU

GEGSJU

Spokane

Sun 4/27

10:45 pm-2:19 pm

1 stop12h 34m

San Juan Luis Munoz Marin Intl

Tue 5/6

6:35 am-6:44 pm

2 stops15h 09m

$405

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Sun 3/9

11:58 pm-2:38 pm

1 stop11h 40m

San Juan Luis Munoz Marin Intl

Tue 3/11

1:05 am-1:38 pm

2 stops15h 33m

$432

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 46 results
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Best time to book a flight from Washington to San Juan

Have a flexible travel schedule? Discover the best time to fly to San Juan from Washington with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Washington to San Juan

Get recent, data-driven insights about flights from Washington to San Juan including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from State of Washington to San Juan?

Currently, September is the cheapest month in which you can book a flight from State of Washington to San Juan (average of $254). Flying from State of Washington to San Juan in March is currently the most expensive (average of $363). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from WA to SJU?

Find hourly flight availability from Washington to San Juan. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 20, 2025.

When flying from State of Washington to San Juan, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in San Juan by month

Plan your trip to San Juan by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Juan ranges from 2.2 - 6.1 inches per month. November is typically the wettest month, when rainfall can reach 6.1 in. February is typically the driest time to visit San Juan when rainfall is around 2.2 in.

Temperature in San Juan by month

Plan your trip to San Juan by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Juan, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 77.0 F).

Reviews of airlines servicing San Juan

Get insights into the airlines that provide service to San Juan. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Juan. Reviews last updated February 20, 2025.
To help decide which airline to fly from Washington to San Juan, see what other customers have to say about Southwest, Alaska Airlines and Delta. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Overall

8.1

Crew

8.7

Food

7.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Southwest
8.1
Very good
4,411 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Overall

8.1

Crew

8.7

Food

7.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Alaska Airlines
8.0
Very good
9,692 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Overall

8.1

Crew

8.7

Food

7.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Delta
8.0
Very good
8,220 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Overall

8.1

Crew

8.7

Food

7.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

JetBlue
7.4
Good
3,070 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Overall

8.1

Crew

8.7

Food

7.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

United Airlines
7.4
Good
8,766 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Overall

8.1

Crew

8.7

Food

7.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Related info for your journey

Find useful and relevant information for your journey from Washington to San Juan. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines to fly from State of Washington to San Juan one-way?

    The cheapest airlines for a one-way flight from State of Washington to San Juan are Spirit Airlines ($103), Frontier ($154), and American Airlines ($183).

  • What are the most popular routes from State of Washington to San Juan?

    The most popular route from State of Washington to San Juan is Seattle/Tacoma Intl - San Juan Luis Munoz Marin Intl. You may also consider Portland - San Juan Luis Munoz Marin Intl or Spokane - San Juan Luis Munoz Marin Intl.

  • Can I find deals for flights from Washington to San Juan that include hotel bookings?

    Yes. In addition to deals on Washington to San Juan flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington to San Juan?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington to San Juan.

  • Can I find deals for business class flights from Washington to San Juan?

    Yes. Cheapflights offers flight deals from Washington to San Juan by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from State of Washington to San Juan?

    Currently, September is the cheapest month in which you can book a flight from State of Washington to San Juan (average of $254). Flying from State of Washington to San Juan in March is currently the most expensive (average of $363). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Washington to San Juan

See prices for flight routes from nearby airports that may be better suited for you.
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Top 9 airlines flying from Washington to San Juan

Discover the top 9 airlines that operate flights from Washington to San Juan. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$241Average$384FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$286Average$516FlexibilityNo cancel feeOn-time62%
FrontierCheapest$290Average$584FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$296Average$715FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$326Average$661FlexibilityNo cancel feeOn-time71%
DeltaCheapest$384Average$700FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$425Average$743FlexibilityNo cancel feeOn-time75%
Sun Country AirCheapest$447Average$882FlexibilityNo cancel feeOn-time83%
SouthwestCheapest$484Average$646FlexibilityNo cancel feeOn-time63%
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