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San Juan

$189+ 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 7/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SJU
Jun 16 — Jun 231
Mon 6/16
Mon 6/23
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 11, 2025.

Round-trip from

$378
(FlightHub)

One-way from

$189
(American Airlines)

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 ($25 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($20 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 11, 2025.

This FlightHub deal was found by Cheapflights users on 6/10. 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.
Wed 7/163:10 pmPDX - SJU
2 stops16h 19mSpirit Airlines
Tue 7/224:43 pmSJU - PDX
2 stops24h 32mSpirit Airlines
Deal found 6/10$378
This Frontier deal was found by Cheapflights users on 6/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/76:05 amPDX - SJU
2 stops24h 49mFrontier
Sun 9/148:03 amSJU - PDX
2 stops19h 13mFrontier
Deal found 6/9$387
This Delta deal was found by Cheapflights users on 6/10. 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 12/35:45 pmPDX - SJU
2 stops16h 30mDelta
Wed 12/107:00 amSJU - PDX
2 stops15h 16mDelta
Deal found 6/10$399
This Delta deal was found by Cheapflights users on 6/9. 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 10/223:05 pmGEG - SJU
2 stops17h 42mDelta
Tue 10/281:10 pmSJU - GEG
2 stops13h 29mDelta
Deal found 6/9$415
This FlightHub deal was found by Cheapflights users on 6/9. 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.
Tue 7/83:58 pmSEA - SJU
2 stops16h 34mSpirit Airlines
Fri 7/111:37 amSJU - SEA
2 stops17h 48mSpirit Airlines
Deal found 6/9$424
This Frontier deal was found by Cheapflights users on 6/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/103:11 pmSEA - SJU
2 stops21h 44mFrontier
Sat 8/168:15 amSJU - SEA
2 stops18h 27mFrontier
Deal found 6/9$429
This United Airlines deal was found by Cheapflights users on 6/11. 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.
Mon 8/185:00 amPDX - SJU
1 stop9h 30mUnited Airlines
Wed 8/271:05 amSJU - PDX
1 stop10h 48mUnited Airlines
Deal found 6/11$434
This Mytrip deal was found by Cheapflights users on 6/9. 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.
Mon 8/44:37 pmPDX - SJU
3 stops39h 55mMultiple Airlines
Tue 8/124:43 pmSJU - PDX
2 stops23h 47mMultiple Airlines
Deal found 6/9$442
This Delta deal was found by Cheapflights users on 6/10. 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.
Mon 9/2212:40 amSEA - SJU
2 stops18h 28mDelta
Tue 9/302:28 pmSJU - SEA
1 stop12h 43mDelta
Deal found 6/10$451
This American Airlines deal was found by Cheapflights users on 6/10. 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.
Wed 7/166:00 amGEG - SJU
2 stops12h 55mAmerican Airlines
Wed 7/306:15 amSJU - GEG
1 stop20h 13mAmerican Airlines
Deal found 6/10$463
This United Airlines deal was found by Cheapflights users on 6/10. 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 9/237:34 pmSEA - SJU
2 stops15h 11mUnited Airlines
Mon 9/291:05 amSJU - SEA
1 stop12h 42mUnited Airlines
Deal found 6/10$467
This Southwest deal was found by Cheapflights users on 6/10. 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.
Wed 9/106:40 pmPDX - SJU
2 stops12h 35mSouthwest
Tue 9/167:20 amSJU - PDX
2 stops14h 05mSouthwest
Deal found 6/10$467

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 11, 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

Wed 7/16

3:10 pm-10:29 am

2 stops16h 19m

San Juan Luis Munoz Marin Intl

Tue 7/22

4:43 pm-2:15 pm

2 stops24h 32m

$378

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Sun 9/7

6:05 am-9:54 am

2 stops24h 49m

San Juan Luis Munoz Marin Intl

Sun 9/14

8:03 am-12:16 am

2 stops19h 13m

$387

SpokaneSan Juan

GEG - SJU

GEGSJU

Spokane

Wed 10/22

3:05 pm-11:47 am

2 stops17h 42m

San Juan Luis Munoz Marin Intl

Tue 10/28

1:10 pm-11:39 pm

2 stops13h 29m

$415

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Tue 7/8

3:58 pm-11:32 am

2 stops16h 34m

San Juan Luis Munoz Marin Intl

Fri 7/11

1:37 am-4:25 pm

2 stops17h 48m

$424

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Sun 8/10

3:11 pm-3:55 pm

2 stops21h 44m

San Juan Luis Munoz Marin Intl

Sat 8/16

8:15 am-11:42 pm

2 stops18h 27m

$429

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Mon 8/18

5:00 am-5:30 pm

1 stop9h 30m

San Juan Luis Munoz Marin Intl

Wed 8/27

1:05 am-8:53 am

1 stop10h 48m

$434

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Sat 8/9

11:00 pm-11:56 am

1 stop9h 56m

San Juan Luis Munoz Marin Intl

Fri 8/22

2:20 pm-11:52 pm

2 stops12h 32m

$440

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Mon 8/4

4:37 pm-11:32 am

3 stops39h 55m

San Juan Luis Munoz Marin Intl

Tue 8/12

4:43 pm-1:30 pm

2 stops23h 47m

$442

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Mon 8/25

12:45 am-3:00 pm

2 stops11h 15m

San Juan Luis Munoz Marin Intl

Mon 9/1

6:00 am-12:14 am

1 stop21h 14m

$451

SpokaneSan Juan

GEG - SJU

GEGSJU

Spokane

Wed 7/16

6:00 am-9:55 pm

2 stops12h 55m

San Juan Luis Munoz Marin Intl

Wed 7/30

6:15 am-11:28 pm

1 stop20h 13m

$463

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/9

Showing 1-10 of 43 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 11, 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 11, 2025.
To help decide which airline to fly from Washington to San Juan, see what other customers have to say about Alaska Airlines, Southwest and Delta. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.1

Food

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

Comfort

7.9

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.1

Food

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
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.1

Food

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
7,945 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.1

Food

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
8,784 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.1

Food

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
2,925 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.1

Food

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 American Airlines ($189), Spirit Airlines ($191), and Delta ($200).

  • 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 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$194Average$792FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$233Average$341FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$286Average$562FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$296Average$731FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$330Average$633FlexibilityNo cancel feeOn-time71%
DeltaCheapest$384Average$610FlexibilityNo cancel feeOn-timeN/A
Sun Country AirCheapest$447Average$885FlexibilityNo cancel feeOn-time83%
SouthwestCheapest$466Average$635FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$490Average$815FlexibilityNo cancel feeOn-time75%

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