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San Juan

$121+ Cheap flights from New Windsor (SWF) 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 1/9. Fares are subject to change and may not be available on all flights or dates of travel.
SWF — SJU
Nov 18 — Nov 251
Tue 11/18
Tue 11/25
1 adult, Economy
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Cheap flight deals from Stewart to San Juan

Discover tips and strategies to find the most affordable flight options for your journey from Stewart (SWF) 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 October 19, 2025.

Round-trip from

$328
(Kiwi.com)

One-way from

$121
(Kiwi.com)

Popular in

December

Cheapest in

March

Average price

$219
From New Windsor Stewart to San Juan
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One-way flight from New Windsor Stewart to San Juan
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Highest demand for flights based on searches. 6% potential increase in price ($19 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Stewart to San Juan

Cheapest flights from Stewart to San Juan
Explore the most affordable flight options available from Stewart to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 19, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/512:27 pmSWF - SJU
1 stop23h 05mMultiple Airlines
Wed 12/104:31 pmSJU - SWF
2 stops44h 06mMultiple Airlines
Deal found 10/18$390
This Mytrip deal was found by Cheapflights users on 10/16. 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 10/2411:31 amSWF - SJU
3 stops37h 23mMultiple Airlines
Sun 10/264:04 pmSJU - SWF
2 stops22h 07mMultiple Airlines
Deal found 10/16$394
This Kiwi.com deal was found by Cheapflights users on 10/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/57:30 pmSWF - SJU
1 stop13h 25mMultiple Airlines
Sat 12/63:55 amSJU - SWF
1 stop8h 08mMultiple Airlines
Deal found 10/18$395
This Kiwi.com deal was found by Cheapflights users on 10/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/306:16 pmSWF - SJU
1 stop19h 03mMultiple Airlines
Wed 11/53:59 amSJU - SWF
1 stop8h 04mMultiple Airlines
Deal found 10/18$446
This Kiwi.com deal was found by Cheapflights users on 10/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/308:41 pmSWF - SJU
1 stop13h 08mMultiple Airlines
Sat 12/63:55 amSJU - SWF
1 stop8h 08mMultiple Airlines
Deal found 10/18$452
This Kiwi.com deal was found by Cheapflights users on 10/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/306:16 pmSWF - SJU
1 stop19h 03mMultiple Airlines
Sat 11/13:04 amSJU - SWF
1 stop8h 59mMultiple Airlines
Deal found 10/17$460
This Kiwi.com deal was found by Cheapflights users on 10/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2011:43 amSWF - SJU
1 stop8h 29mMultiple Airlines
Mon 11/249:45 pmSJU - SWF
1 stop12h 08mMultiple Airlines
Deal found 10/19$500
This Kiwi.com deal was found by Cheapflights users on 10/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/26:16 pmSWF - SJU
2 stops20h 03mMultiple Airlines
Wed 11/53:59 amSJU - SWF
1 stop8h 04mMultiple Airlines
Deal found 10/17$508

Cheapflights Fare Finder

 
Customize your flight search to find flights from Stewart 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 October 19, 2025.
Use the filters below to find and compare flights from New Windsor to San Juan that are best for you.

Fly from

Stewart

Fly to

San Juan

Route

Depart

Return

Price

New WindsorSan Juan

SWF - SJU

SWFSJU

New Windsor Stewart

Fri 12/5

12:27 pm-12:32 pm

1 stop23h 05m

San Juan Luis Munoz Marin Intl

Wed 12/10

4:31 pm-11:37 am

2 stops44h 06m

$390

New WindsorSan Juan

SWF - SJU

SWFSJU

New Windsor Stewart

Fri 12/5

7:30 pm-9:55 am

1 stop13h 25m

San Juan Luis Munoz Marin Intl

Sat 12/6

3:55 am-11:03 am

1 stop8h 08m

$400

New WindsorSan Juan

SWF - SJU

SWFSJU

New Windsor Stewart

Thu 10/30

6:16 pm-1:19 pm

1 stop19h 03m

San Juan Luis Munoz Marin Intl

Wed 11/5

3:59 am-11:03 am

1 stop8h 04m

$446

New WindsorSan Juan

SWF - SJU

SWFSJU

New Windsor Stewart

Sun 11/30

8:41 pm-10:49 am

1 stop13h 08m

San Juan Luis Munoz Marin Intl

Sat 12/6

3:55 am-11:03 am

1 stop8h 08m

$452

New WindsorSan Juan

SWF - SJU

SWFSJU

New Windsor Stewart

Fri 10/24

11:31 am-8:40 pm

3 stops33h 09m

San Juan Luis Munoz Marin Intl

Sun 10/26

3:19 pm-2:11 pm

3 stops22h 52m

$511

New WindsorSan Juan

SWF - SJU

SWFSJU

New Windsor Stewart

Thu 10/23

11:43 am-2:30 am

1 stop14h 47m

San Juan Luis Munoz Marin Intl

Wed 10/29

3:04 am-11:03 am

1 stop7h 59m

$588

New WindsorSan Juan

SWF - SJU

SWFSJU

New Windsor Stewart

Sun 11/2

6:16 pm-1:22 pm

1 stop18h 06m

San Juan Luis Munoz Marin Intl

Sun 11/9

7:30 am-5:24 pm

1 stop10h 54m

$592

New WindsorSan Juan

SWF - SJU

SWFSJU

New Windsor Stewart

Fri 1/9

11:09 am-11:49 pm

1 stop11h 40m

$124

New WindsorSan Juan

SWF - SJU

SWFSJU

New Windsor Stewart

Mon 11/24

10:57 am-11:44 pm

1 stop11h 47m

$169

New WindsorSan Juan

SWF - SJU

SWFSJU

New Windsor Stewart

Fri 12/5

12:27 pm-5:33 pm

2 stops28h 06m

$191

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/19

Showing 1-10 of 15 results
1
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Best time to book a flight from Stewart to San Juan

Have a flexible travel schedule? Discover the best time to fly to San Juan from Stewart 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 New Windsor to San Juan

What is the cheapest month to book a flight from New Windsor to San Juan?

Currently, March is the cheapest month in which you can book a flight from New Windsor to San Juan (average of $62). Flying from New Windsor to San Juan in August is currently the most expensive (average of $138). 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.

Related info for your journey

Find useful and relevant information for your journey from Stewart 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 airport do you fly from for flights from New Windsor to San Juan?

    If you book a flight to San Juan from New Windsor, you will be flying from Stewart, which is the city’s only airport. New Windsor Stewart (SWF) is located 4.3 mi from the center of New Windsor. There are 0 flights from Stewart to San Juan per day from 0 different airlines.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Stewart 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 New Windsor to San Juan?

    Currently, March is the cheapest month in which you can book a flight from New Windsor to San Juan (average of $62). Flying from New Windsor to San Juan in August is currently the most expensive (average of $138). 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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