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$112+ 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 3/18. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SJU
Jan 27 — Feb 31
Mon 1/27
Mon 2/3
1 adult, Economy
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Cheap flight deals from Washington to San Juan

Discover tips and strategies to find the most affordable flight options for your journey from Washington (USWA) to San Juan (PR1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 22, 2025.

Round-trip from

$338
(Mytrip)

One-way from

$112
(Booking.com)
From Washington to San Juan
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One-way flight from Washington to San Juan
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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 January 22, 2025.

This Mytrip deal was found by Cheapflights users on 1/22. 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.
Tue 3/259:48 amSEA - SJU
2 stops25h 19mSpirit Airlines
Tue 4/112:57 amSJU - SEA
3 stops21h 05mSpirit Airlines
Deal found 1/22$338
This Mytrip deal was found by Cheapflights users on 1/22. 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.
Sat 3/18:28 pmPDX - SJU
2 stops16h 52mSpirit Airlines
Fri 3/71:30 amSJU - PDX
2 stops21h 07mSpirit Airlines
Deal found 1/22$339
This American Airlines deal was found by Cheapflights users on 1/22. 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 9/1511:59 pmSEA - SJU
1 stop11h 20mAmerican Airlines
Fri 9/198:30 amSJU - SEA
1 stop19h 03mAmerican Airlines
Deal found 1/22$347
This United Airlines deal was found by Cheapflights users on 1/21. 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 3/47:00 amPDX - SJU
1 stop10h 46mUnited Airlines
Tue 3/117:10 amSJU - PDX
2 stops14h 38mUnited Airlines
Deal found 1/21$359
This Trip.com deal was found by Cheapflights users on 1/22. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/21:36 pmSEA - SJU
2 stops15h 57mFrontier
Tue 4/89:35 pmSJU - SEA
2 stops20h 51mFrontier
Deal found 1/22$367
This American Airlines deal was found by Cheapflights users on 1/20. 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 4/16:15 pmPDX - SJU
2 stops13h 40mAmerican Airlines
Tue 4/811:50 amSJU - PDX
2 stops13h 58mAmerican Airlines
Deal found 1/20$392
This United Airlines deal was found by Cheapflights users on 1/22. 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 3/17:32 pmSEA - SJU
2 stops13h 45mUnited Airlines
Wed 3/191:05 amSJU - SEA
1 stop13h 04mUnited Airlines
Deal found 1/22$421
This Delta deal was found by Cheapflights users on 1/22. 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.
Sat 10/257:00 amPDX - SJU
1 stop13h 19mDelta
Thu 11/63:45 pmSJU - PDX
2 stops12h 07mDelta
Deal found 1/22$425
This Delta deal was found by Cheapflights users on 1/22. 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 4/287:21 pmGEG - SJU
2 stops14h 01mDelta
Tue 5/62:04 pmSJU - GEG
2 stops12h 32mDelta
Deal found 1/22$435
This Mytrip deal was found by Cheapflights users on 1/21. 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 1/308:30 amPDX - SJU
3 stops29h 32mMultiple Airlines
Tue 2/48:40 pmSJU - PDX
2 stops23h 55mMultiple Airlines
Deal found 1/21$438
This Delta deal was found by Cheapflights users on 1/21. 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 2/196:15 amSEA - SJU
1 stop13h 31mDelta
Thu 2/276:15 amSJU - SEA
1 stop12h 03mDelta
Deal found 1/21$455
This Southwest deal was found by Cheapflights users on 1/21. 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.
Thu 5/156:55 amPDX - SJU
2 stops14h 00mSouthwest
Mon 5/1910:45 amSJU - PDX
2 stops15h 30mSouthwest
Deal found 1/21$469

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 January 22, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Sun 2/9

7:10 am-3:58 pm

3 stops28h 48m

San Juan Luis Munoz Marin Intl

Sat 2/15

6:00 am-12:25 am

2 stops22h 25m

$338

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Sat 3/1

8:28 pm-5:20 pm

2 stops16h 52m

San Juan Luis Munoz Marin Intl

Fri 3/7

1:30 am-6:37 pm

2 stops21h 07m

$339

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Tue 3/4

8:10 am-10:22 pm

1 stop10h 12m

San Juan Luis Munoz Marin Intl

Tue 3/11

7:10 am-6:45 pm

2 stops14h 35m

$347

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Tue 3/4

7:00 am-9:46 pm

1 stop10h 46m

San Juan Luis Munoz Marin Intl

Tue 3/11

7:10 am-6:48 pm

2 stops14h 38m

$359

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Mon 3/3

10:17 pm-9:00 pm

1 stop18h 43m

San Juan Luis Munoz Marin Intl

Wed 3/5

6:00 am-3:49 pm

2 stops13h 49m

$392

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Tue 4/1

6:15 pm-10:55 am

2 stops13h 40m

San Juan Luis Munoz Marin Intl

Tue 4/8

11:50 am-10:48 pm

2 stops13h 58m

$392

SeattleSan Juan

SEA - SJU

SEASJU

Seattle/Tacoma Intl

Tue 2/4

11:59 pm-1:48 pm

1 stop9h 49m

San Juan Luis Munoz Marin Intl

Sat 2/8

7:00 am-12:19 am

2 stops21h 19m

$422

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Fri 2/21

5:15 pm-12:28 pm

2 stops15h 13m

San Juan Luis Munoz Marin Intl

Thu 2/27

7:30 am-6:08 pm

1 stop14h 38m

$425

SpokaneSan Juan

GEG - SJU

GEGSJU

Spokane

Mon 4/28

7:21 pm-12:22 pm

2 stops14h 01m

San Juan Luis Munoz Marin Intl

Tue 5/6

2:04 pm-11:36 pm

2 stops12h 32m

$435

SpokaneSan Juan

GEG - SJU

GEGSJU

Spokane

Tue 3/18

3:15 pm-12:17 pm

2 stops18h 02m

San Juan Luis Munoz Marin Intl

Mon 3/24

1:05 am-12:43 pm

2 stops14h 38m

$439

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/22

Showing 1-10 of 47 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 $375). 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 January 22, 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 January 22, 2025.
To help decide which airline to fly from Washington to San Juan, see what other customers have to say about Spirit Airlines, United 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
4,654 reviews

Comfort

8.1

Boarding

8.2

Entertainment

7.7

Crew

8.7

Food

7.2

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,654 reviews
Southwest
8.1
Very good
4,654 reviews

Comfort

8.1

Boarding

8.2

Entertainment

7.7

Crew

8.7

Food

7.2

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Alaska Airlines
8.0
Very good
9,707 reviews
Southwest
8.1
Very good
4,654 reviews

Comfort

8.1

Boarding

8.2

Entertainment

7.7

Crew

8.7

Food

7.2

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,512 reviews
Southwest
8.1
Very good
4,654 reviews

Comfort

8.1

Boarding

8.2

Entertainment

7.7

Crew

8.7

Food

7.2

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

JetBlue
7.4
Good
3,191 reviews
Southwest
8.1
Very good
4,654 reviews

Comfort

8.1

Boarding

8.2

Entertainment

7.7

Crew

8.7

Food

7.2

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
8,975 reviews
Southwest
8.1
Very good
4,654 reviews

Comfort

8.1

Boarding

8.2

Entertainment

7.7

Crew

8.7

Food

7.2

Overall

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

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 ($112), American Airlines ($174), and Southwest ($180).

  • 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 $375). 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.

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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 January 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$270Average$402FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$286Average$511FlexibilityNo cancel feeOn-time62%
FrontierCheapest$290Average$581FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$296Average$706FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$326Average$653FlexibilityNo cancel feeOn-time71%
Sun Country AirCheapest$348Average$885FlexibilityNo cancel feeOn-time83%
DeltaCheapest$384Average$709FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$425Average$743FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$484Average$694FlexibilityNo cancel feeOn-time63%
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