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San Juan

$166+ 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 9/14. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SJU
Jul 1 — Jul 81
Tue 7/1
Tue 7/8
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 June 26, 2025.

Round-trip from

$354
(FlightHub)

One-way from

$166
(SmartFares)

Popular in

December

Cheapest in

September

Average price

$650
From Washington to San Juan
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One-way flight from Washington to San Juan
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Highest demand for flights based on searches. 4% potential increase in price ($24 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 26, 2025.

This FlightHub deal was found by Cheapflights users on 6/25. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/112:35 pmPDX - SJU
2 stops23h 11mSpirit Airlines
Mon 9/155:41 pmSJU - PDX
2 stops22h 49mSpirit Airlines
Deal found 6/25$354
This SmartFares deal was found by Cheapflights users on 6/25. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/255:30 pmSEA - SJU
2 stops25h 20mSpirit Airlines
Fri 8/111:59 pmSJU - SEA
2 stops19h 26mSpirit Airlines
Deal found 6/25$356
This Delta deal was found by Cheapflights users on 6/25. 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.
Wed 10/15:45 amSEA - SJU
2 stops13h 23mDelta
Tue 10/72:28 pmSJU - SEA
1 stop10h 57mDelta
Deal found 6/25$377
This JetBlue deal was found by Cheapflights users on 6/25. 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 9/2311:40 pmSEA - SJU
1 stop14h 02mJetBlue
Tue 9/302:05 pmSJU - SEA
1 stop11h 05mJetBlue
Deal found 6/25$378
This Delta deal was found by Cheapflights users on 6/25. 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 8/3111:00 pmPDX - SJU
1 stop11h 10mDelta
Fri 9/57:00 amSJU - PDX
2 stops19h 52mDelta
Deal found 6/25$399
This United Airlines deal was found by Cheapflights users on 6/25. 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.
Sat 12/611:50 pmSEA - SJU
1 stop10h 50mUnited Airlines
Sat 12/138:10 amSJU - SEA
1 stop11h 47mUnited Airlines
Deal found 6/25$405
This Southwest deal was found by Cheapflights users on 6/25. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/239:10 pmSEA - SJU
1 stop12h 35mSouthwest
Tue 9/3011:50 amSJU - SEA
2 stops12h 05mSouthwest
Deal found 6/25$414
This Mytrip deal was found by Cheapflights users on 6/25. 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 8/14:37 pmPDX - SJU
3 stops29h 58mMultiple Airlines
Tue 8/51:37 amSJU - PDX
3 stops34h 41mMultiple Airlines
Deal found 6/25$417
This JetBlue deal was found by Cheapflights users on 6/25. 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.
Fri 7/1811:40 pmPDX - SJU
1 stop13h 24mJetBlue
Thu 8/1412:45 pmSJU - PDX
1 stop12h 30mJetBlue
Deal found 6/25$432
This United Airlines deal was found by Cheapflights users on 6/26. 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.
Fri 9/57:35 pmPDX - SJU
2 stops16h 09mUnited Airlines
Tue 9/91:25 pmSJU - PDX
1 stop11h 12mUnited Airlines
Deal found 6/26$433
This Mytrip deal was found by Cheapflights users on 6/24. 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.
Thu 7/3111:59 pmSEA - SJU
3 stops32h 33mMultiple Airlines
Mon 8/41:37 amSJU - SEA
2 stops17h 48mMultiple Airlines
Deal found 6/24$458
This American Airlines deal was found by Cheapflights users on 6/24. 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 9/235:43 pmSEA - SJU
2 stops16h 03mAmerican Airlines
Tue 9/306:10 amSJU - SEA
2 stops18h 13mAmerican Airlines
Deal found 6/24$488

Cheapflights Fare Finder

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 June 26, 2025.
Use the filters below to find and compare flights from Washington to San Juan that are best for you.

Fly from

Washington

Fly to

San Juan

Route

Depart

Return

Price

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Thu 9/11

2:35 pm-4:46 pm

2 stops23h 11m

San Juan Luis Munoz Marin Intl

Mon 9/15

5:41 pm-1:30 pm

2 stops22h 49m

$354

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Fri 7/25

5:30 pm-9:50 pm

2 stops25h 20m

San Juan Luis Munoz Marin Intl

Fri 8/1

11:59 pm-4:25 pm

2 stops19h 26m

$356

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Fri 9/19

11:10 pm-1:45 pm

1 stop11h 35m

San Juan Luis Munoz Marin Intl

Fri 9/26

1:05 am-11:31 am

2 stops13h 26m

$377

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Tue 9/23

11:40 pm-4:42 pm

1 stop14h 02m

San Juan Luis Munoz Marin Intl

Tue 9/30

2:05 pm-10:10 pm

1 stop11h 05m

$378

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Sun 8/31

11:00 pm-1:10 pm

1 stop11h 10m

San Juan Luis Munoz Marin Intl

Fri 9/5

7:00 am-11:52 pm

2 stops19h 52m

$399

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Tue 9/23

9:10 pm-12:45 pm

1 stop12h 35m

San Juan Luis Munoz Marin Intl

Tue 9/30

11:50 am-8:55 pm

2 stops12h 05m

$414

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Fri 8/1

4:37 pm-1:35 am

3 stops29h 58m

San Juan Luis Munoz Marin Intl

Tue 8/5

1:37 am-9:18 am

3 stops34h 41m

$417

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Fri 7/18

11:40 pm-4:04 pm

1 stop13h 24m

San Juan Luis Munoz Marin Intl

Thu 8/14

12:45 pm-10:15 pm

1 stop12h 30m

$432

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Fri 9/5

7:35 pm-2:44 pm

2 stops16h 09m

San Juan Luis Munoz Marin Intl

Tue 9/9

1:25 pm-9:37 pm

1 stop11h 12m

$433

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Thu 7/31

11:59 pm-11:32 am

3 stops32h 33m

San Juan Luis Munoz Marin Intl

Mon 8/4

1:37 am-4:25 pm

2 stops17h 48m

$458

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/26

Showing 1-10 of 44 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.

Cheapflights Insights

Everything you need to know about your flight from Washington to San Juan

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 June is currently the most expensive (average of $339). 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 June 26, 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 June 26, 2025.
Read through reviews of airlines operating flights from Washington to San Juan, such as Alaska Airlines, Southwest, and Delta. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Boarding

8.1

Food

7.1

Comfort

7.8

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Boarding

8.1

Food

7.1

Comfort

7.8

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Southwest
8.0
Very good
4,278 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Boarding

8.1

Food

7.1

Comfort

7.8

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Delta
8.0
Very good
7,965 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Boarding

8.1

Food

7.1

Comfort

7.8

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
United Airlines
7.4
Good
8,840 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Boarding

8.1

Food

7.1

Comfort

7.8

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
JetBlue
7.3
Good
2,921 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Boarding

8.1

Food

7.1

Comfort

7.8

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.

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 ($166), United Airlines ($189), and Frontier ($192).

  • 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 June is currently the most expensive (average of $339). 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 June 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$194Average$798FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$233Average$341FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$286Average$559FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$296Average$732FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$332Average$640FlexibilityNo cancel feeOn-time71%
DeltaCheapest$371Average$614FlexibilityNo cancel feeOn-timeN/A
Sun Country AirCheapest$447Average$882FlexibilityNo cancel feeOn-time83%
SouthwestCheapest$466Average$646FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$490Average$818FlexibilityNo cancel feeOn-time75%

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