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San Juan

$124+ Cheap flights from Portland, ME (PWM) 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 6/28. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — SJU
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheapflights Tip: The best prices from Portland to San Juan are usually found in September or October, booked 32 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

Cheap flight deals from Portland to San Juan

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PWM) 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 June 12, 2025.

Round-trip from

$203
(Priceline)

One-way from

$124
(SmartFares)

Popular in

December

Cheapest in

September

Average price

$530
From Portland to San Juan
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One-way flight from Portland to San Juan
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Highest demand for flights based on searches. 5% potential increase in price ($26 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% 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 Portland to San Juan

Cheapest flights from Portland to San Juan
Explore the most affordable flight options available from Portland to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This Priceline 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/46:12 pmPWM - SJU
1 stop13h 47mFrontier
Sun 10/129:07 amSJU - PWM
1 stop25h 58mFrontier
Deal found 6/10$203
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.
Tue 8/192:36 pmPWM - SJU
1 stop9h 15mDelta
Sat 8/2312:50 pmSJU - PWM
1 stop11h 13mDelta
Deal found 6/10$275
This United Airlines deal was found by Cheapflights users on 6/12. 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 7/43:50 pmPWM - SJU
1 stop8h 12mUnited Airlines
Wed 7/91:10 amSJU - PWM
2 stops13h 14mUnited Airlines
Deal found 6/12$381
This JetBlue 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/152:19 pmPWM - SJU
1 stop9h 15mJetBlue
Sat 7/196:00 pmSJU - PWM
1 stop6h 17mJetBlue
Deal found 6/10$387
This Southwest deal was found by Cheapflights users on 6/12. 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.
Fri 7/410:45 amPWM - SJU
1 stop10h 55mSouthwest
Thu 7/101:30 pmSJU - PWM
2 stops10h 35mSouthwest
Deal found 6/12$408
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.
Sat 10/45:24 pmPWM - SJU
2 stops17h 47mAmerican Airlines
Mon 10/134:05 pmSJU - PWM
1 stop6h 19mAmerican Airlines
Deal found 6/10$473
This Mytrip deal was found by Cheapflights users on 6/12. 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 7/46:16 pmPWM - SJU
2 stops25h 03mMultiple Airlines
Wed 7/91:21 amSJU - PWM
3 stops40h 04mMultiple Airlines
Deal found 6/12$517

Cheapflights Fare Finder

Customize your flight search to find flights from Portland 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 12, 2025.
Use the filters below to find and compare flights from Portland to San Juan that are best for you.

Fly from

Portland

Fly to

San Juan

Route

Depart

Return

Price

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Sat 10/4

6:12 pm-7:59 am

1 stop13h 47m

San Juan Luis Munoz Marin Intl

Sun 10/12

9:07 am-11:05 am

1 stop25h 58m

$203

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Tue 8/19

2:36 pm-11:51 pm

1 stop9h 15m

San Juan Luis Munoz Marin Intl

Sat 8/23

12:50 pm-12:03 am

1 stop11h 13m

$275

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Fri 7/4

3:50 pm-12:02 am

1 stop8h 12m

San Juan Luis Munoz Marin Intl

Wed 7/9

1:10 am-2:24 pm

2 stops13h 14m

$381

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Tue 7/15

2:19 pm-11:34 pm

1 stop9h 15m

San Juan Luis Munoz Marin Intl

Sat 7/19

6:00 pm-12:17 am

1 stop6h 17m

$387

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Fri 7/4

10:45 am-9:40 pm

1 stop10h 55m

San Juan Luis Munoz Marin Intl

Thu 7/10

1:30 pm-12:05 am

2 stops10h 35m

$408

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Sat 10/4

5:24 pm-11:11 am

2 stops17h 47m

San Juan Luis Munoz Marin Intl

Mon 10/13

4:05 pm-10:24 pm

1 stop6h 19m

$473

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Fri 7/4

6:16 pm-7:19 pm

2 stops25h 03m

San Juan Luis Munoz Marin Intl

Wed 7/9

1:21 am-5:25 pm

3 stops40h 04m

$517

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Sat 6/28

7:25 pm-2:35 am

1 stop7h 10m

$124

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Thu 6/26

2:34 pm-11:54 pm

1 stop9h 20m

$236

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Sat 6/28

8:07 pm-7:19 pm

2 stops23h 12m

$260

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Showing 1-10 of 12 results
1
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Best time to book a flight from Portland to San Juan

Have a flexible travel schedule? Discover the best time to fly to San Juan from Portland 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 Portland to San Juan

How far ahead should I book a flight from Portland, Maine to San Juan?

Use this chart to determine the optimal time to book a round-trip flight from Portland to San Juan. Price data was last updated on June 9, 2025.

To ensure you get the cheapest price possible for a flight from Portland, Maine to San Juan, you should look to book at least 32 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Portland, Maine to San Juan?

Currently, September is the cheapest month in which you can book a flight from Portland, Maine to San Juan (average of $254). Flying from Portland, Maine 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 PWM to SJU?

Find hourly flight availability from Portland 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 12, 2025.

When flying from Portland, Maine to San Juan, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 46% versus a flight in the morning.

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 12, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta and United Airlines from Portland to San Juan to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,287 reviews

Crew

8.6

Overall

8.0

Food

7.1

Comfort

8.0

Entertainment

7.6

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Southwest
8.0
Very good
4,287 reviews
Southwest
8.0
Very good
4,287 reviews

Crew

8.6

Overall

8.0

Food

7.1

Comfort

8.0

Entertainment

7.6

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Delta
8.0
Very good
7,946 reviews
Southwest
8.0
Very good
4,287 reviews

Crew

8.6

Overall

8.0

Food

7.1

Comfort

8.0

Entertainment

7.6

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
United Airlines
7.4
Good
8,790 reviews
Southwest
8.0
Very good
4,287 reviews

Crew

8.6

Overall

8.0

Food

7.1

Comfort

8.0

Entertainment

7.6

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
JetBlue
7.3
Good
2,925 reviews
Southwest
8.0
Very good
4,287 reviews

Crew

8.6

Overall

8.0

Food

7.1

Comfort

8.0

Entertainment

7.6

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,287 reviews

Crew

8.6

Overall

8.0

Food

7.1

Comfort

8.0

Entertainment

7.6

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Related info for your journey

Find useful and relevant information for your journey from Portland 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 Portland to San Juan?

    Portland (PWM), located 2.9 mi from the city center, is the airport you fly out of when you book flights from Portland to San Juan. 6 airlines have flights from Portland to San Juan on a regular basis. Booking flights from Portland to San Juan should not be difficult; the airport handles an average of 0 outbound flights to San Juan per day.

  • What are the cheapest airlines flying from Portland, Maine to San Juan round-trip?

    Our cheapest airline available from Portland, Maine to San Juan is Frontier. Our recent data shows that you can find tickets from as low as $203 on this airline. Additional options worth looking into are Delta and United Airlines, starting at $275 and $381 round-trip. Frontier is currently priced 57% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Portland, Maine to San Juan one-way?

    One-way options have recently been found by users for as low as $124 on Frontier. Other airlines that offer cheap prices include Delta from $236 and United Airlines from $261 one-way.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Portland 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 Portland, Maine to San Juan?

    Currently, September is the cheapest month in which you can book a flight from Portland, Maine to San Juan (average of $254). Flying from Portland, Maine 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

Browse thousands of different options on Cheapflights for your next trip

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Top 6 airlines flying from Portland to San Juan

Discover the top 6 airlines that operate flights from Portland 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 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$145Average$229FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$214Average$454FlexibilityNo cancel feeOn-time62%
DeltaCheapest$274Average$416FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$302Average$570FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$322Average$581FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$401Average$657FlexibilityNo cancel feeOn-time63%

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