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Cheap flights from Portland, Maine to San Juan from $138

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland, Maine to San Juan departing on 12/31. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Portland, Maine to San Juan

Cheap round-trip flights

American Airlines Logo
5:20 pm - 11:11 amPWM-SJU
17h 51m2 stops
American Airlines Logo
4:45 pm - 12:31 pmSJU-PWM
19h 46m2 stops
$215American Airlines
Find Deal
Sat, Sep 13 - Sat, Sep 20
Delta Logo
6:33 am - 4:20 pmPWM-SJU
9h 47m1 stop
Delta Logo
6:00 pm - 12:34 amSJU-PWM
6h 34m1 stop
$275Delta
Find Deal
Wed, Sep 17 - Sat, Sep 20
JetBlue Logo
7:30 am - 2:56 pmPWM-SJU
7h 26m1 stop
JetBlue Logo
3:03 am - 1:22 pmSJU-PWM
10h 19m1 stop
$282JetBlue
Find Deal
Fri, Oct 3 - Mon, Oct 6
American Airlines Logo
8:02 am - 11:37 pmPWM-SJU
15h 35m2 stops
American Airlines Logo
7:00 am - 8:14 pmSJU-PWM
13h 14m2 stops
$300American Airlines
Find Deal
Fri, Oct 3 - Tue, Oct 7
Delta Logo
2:41 pm - 11:47 pmPWM-SJU
9h 06m1 stop
Delta Logo
7:00 am - 2:01 pmSJU-PWM
7h 01m1 stop
$319Delta
Find Deal
Sat, Sep 13 - Sat, Sep 20
JetBlue Logo
3:45 pm - 12:04 amPWM-SJU
7h 19m1 stop
JetBlue Logo
6:00 am - 2:26 pmSJU-PWM
9h 26m1 stop
$379JetBlue
Find Deal
Wed, Feb 11 - Sat, Feb 21
Southwest Logo
11:50 am - 12:35 amPWM-SJU
11h 45m2 stops
Southwest Logo
11:20 am - 10:15 pmSJU-PWM
11h 55m2 stops
$398Southwest
Find Deal
Fri, Nov 7 - Tue, Nov 11
Southwest Logo
5:25 pm - 1:25 amPWM-SJU
7h 00m1 stop
Southwest Logo
11:20 am - 10:15 pmSJU-PWM
11h 55m2 stops
$421Southwest
Find Deal
Fri, Nov 7 - Tue, Nov 11
United Airlines Logo
6:14 am - 2:44 pmPWM-SJU
8h 30m1 stop
United Airlines Logo
1:05 am - 2:25 pmSJU-PWM
13h 20m2 stops
$430United Airlines
Find Deal
Wed, Sep 17 - Fri, Sep 19
United Airlines Logo
6:00 am - 2:40 pmPWM-SJU
7h 40m1 stop
United Airlines Logo
2:05 am - 2:27 pmSJU-PWM
13h 22m2 stops
$453United Airlines
Find Deal
Sat, Jan 24 - Fri, Feb 6

American Airlines flights from Portland, Maine to San Juan Luis Munoz Marin Intl Airport

Our best American Airlines deals on Portland, Maine to San Juan Luis Munoz Marin Intl Airport flight tickets
American Airlines
Sep 13
PWM5:20 pmPortland
17h 51m
2 stops
SJU11:11 amSan Juan Luis Munoz Marin Intl
Sep 20
SJU4:45 pmSan Juan Luis Munoz Marin Intl
19h 46m
2 stops
PWM12:31 pmPortland
$215
Find similar
American Airlines
Oct 3
PWM8:02 amPortland
15h 35m
2 stops
SJU11:37 pmSan Juan Luis Munoz Marin Intl
Oct 7
SJU7:00 amSan Juan Luis Munoz Marin Intl
13h 14m
2 stops
PWM8:14 pmPortland
$300
Find similar
American Airlines
Jan 24
PWM4:16 pmPortland
6h 24m
1 stop
SJU11:40 pmSan Juan Luis Munoz Marin Intl
Feb 7
SJU6:30 amSan Juan Luis Munoz Marin Intl
6h 35m
1 stop
PWM12:05 pmPortland
$310
Find similar

Delta flights from Portland, Maine to San Juan Luis Munoz Marin Intl Airport

Our best Delta deals on Portland, Maine to San Juan Luis Munoz Marin Intl Airport flight tickets
Delta
Sep 17
PWM6:33 amPortland
9h 47m
1 stop
SJU4:20 pmSan Juan Luis Munoz Marin Intl
Sep 20
SJU6:00 pmSan Juan Luis Munoz Marin Intl
6h 34m
1 stop
PWM12:34 amPortland
$275
Find similar
Delta
Sep 13
PWM2:41 pmPortland
9h 06m
1 stop
SJU11:47 pmSan Juan Luis Munoz Marin Intl
Sep 20
SJU7:00 amSan Juan Luis Munoz Marin Intl
7h 01m
1 stop
PWM2:01 pmPortland
$319
Find similar
Delta
Dec 30
PWM12:06 pmPortland
10h 53m
1 stop
SJU11:59 pmSan Juan Luis Munoz Marin Intl
Jan 4
SJU6:00 pmSan Juan Luis Munoz Marin Intl
6h 49m
1 stop
PWM11:49 pmPortland
$777
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Portland, Maine to San Juan Luis Munoz Marin Intl Airport 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, momondo users made 832,500 searches. Data last updated August 18, 2025.
Use the filters below to find and compare flights from Portland, Maine to San Juan Luis Munoz Marin Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Sat 9/13

5:20 pm-11:11 am

2 stops17h 51m

San Juan Luis Munoz Marin Intl

Sat 9/20

4:45 pm-12:31 pm

2 stops19h 46m

$215

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Wed 9/17

6:33 am-4:20 pm

1 stop9h 47m

San Juan Luis Munoz Marin Intl

Sat 9/20

6:00 pm-12:34 am

1 stop6h 34m

$275

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Fri 10/3

7:30 am-2:56 pm

1 stop7h 26m

San Juan Luis Munoz Marin Intl

Mon 10/6

3:03 am-1:22 pm

1 stop10h 19m

$282

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Fri 10/3

8:02 am-11:37 pm

2 stops15h 35m

San Juan Luis Munoz Marin Intl

Tue 10/7

7:00 am-8:14 pm

2 stops13h 14m

$300

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Sat 9/13

2:41 pm-11:47 pm

1 stop9h 06m

San Juan Luis Munoz Marin Intl

Sat 9/20

7:00 am-2:01 pm

1 stop7h 01m

$319

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Wed 2/11

3:45 pm-12:04 am

1 stop7h 19m

San Juan Luis Munoz Marin Intl

Sat 2/21

6:00 am-2:26 pm

1 stop9h 26m

$379

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Fri 11/7

11:50 am-12:35 am

2 stops11h 45m

San Juan Luis Munoz Marin Intl

Tue 11/11

11:20 am-10:15 pm

2 stops11h 55m

$398

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Fri 11/7

5:25 pm-1:25 am

1 stop7h 00m

San Juan Luis Munoz Marin Intl

Tue 11/11

11:20 am-10:15 pm

2 stops11h 55m

$421

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Wed 9/17

6:14 am-2:44 pm

1 stop8h 30m

San Juan Luis Munoz Marin Intl

Fri 9/19

1:05 am-2:25 pm

2 stops13h 20m

$430

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Sat 1/24

6:00 am-2:40 pm

1 stop7h 40m

San Juan Luis Munoz Marin Intl

Fri 2/6

2:05 am-2:27 pm

2 stops13h 22m

$453

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Portland, Maine to San Juan Luis Munoz Marin Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Portland, Maine and San Juan Luis Munoz Marin Intl Airport?

What is the cheapest month to fly to San Juan Luis Munoz Marin Intl Airport?

If you aren’t able to travel to San Juan Luis Munoz Marin Intl Airport during the month of September, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $364.

What is the cheapest day to depart on your flight to San Juan Luis Munoz Marin Intl Airport?

On average, the least expensive day to fly to San Juan Luis Munoz Marin Intl Airport from Portland, Maine is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $334. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from Portland, Maine because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $579.

What is the cheapest time of day to depart on your flight to San Juan Luis Munoz Marin Intl Airport?

The cheapest time of day to fly to San Juan Luis Munoz Marin Intl Airport is in the evening when flights can be purchased for as low as $302. Flights in the morning are often more expensive with an average ticket price of $557.

How far in advance should I book a flight to San Juan Luis Munoz Marin Intl Airport?

You are more likely to see cheaper flights to San Juan Luis Munoz Marin Intl Airport from Portland, Maine when booking weeks ahead of your departure date. In general, you can expect to find flights to San Juan Luis Munoz Marin Intl Airport for around $487 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Juan Luis Munoz Marin Intl Airport from Portland, Maine for as low as $359 on momondo.

How have Portland, Maine to San Juan Luis Munoz Marin Intl Airport flight prices changed over time?

When to book flights from Portland, Maine to San Juan Luis Munoz Marin Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Portland, Maine to San Juan Luis Munoz Marin Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Portland, Maine to San Juan Luis Munoz Marin Intl Airport (PWM to SJU) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland, Maine to San Juan Luis Munoz Marin Intl Airport

Best Price Found

$138

Fastest flight time

6h 24m

Direct flights

None
The best one-way flight to San Juan Luis Munoz Marin Intl Airport from Portland, Maine in the past 72 hours is $138. The best round-trip flight deal from Portland, Maine to San Juan Luis Munoz Marin Intl Airport found on momondo in the last 72 hours is $215.
The fastest flight from Portland, Maine to San Juan Luis Munoz Marin Intl Airport takes 6h 24m
There are no direct flights from Portland, Maine to San Juan Luis Munoz Marin Intl Airport. Popular non-direct route for this connection is Portland Airport - San Juan Luis Munoz Marin Intl Airport.
Search flight deals

  • How far is Portland to San Juan Luis Munoz Marin Intl by plane?

    The straight-line distance from Portland to San Juan Luis Munoz Marin Intl is 1759.0 mi. Flights usually cover this in 6h 24m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Portland Airport to San Juan Luis Munoz Marin Intl Airport?

    Prices for flights from Portland Airport to San Juan Luis Munoz Marin Intl Airport refresh daily.

  • How many operators does momondo search for flights from Portland Airport to San Juan Luis Munoz Marin Intl Airport?

  • How old do you have to be to fly from Portland Airport to San Juan Luis Munoz Marin Intl Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to San Juan Luis Munoz Marin Intl Airport.

  • What documentation or ID do you need to fly to San Juan Luis Munoz Marin Intl Airport?

    The travel and health documents you'll need for your trip to San Juan Luis Munoz Marin Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Juan Luis Munoz Marin Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Portland, Maine to San Juan Luis Munoz Marin Intl Airport?

Best airlines flying from Portland, Maine to San Juan Luis Munoz Marin Intl Airport

Compare and see reviews for airlines that fly from Portland, Maine to San Juan Luis Munoz Marin Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $145Free CancellationRating
5.8
3,212 reviews
Search Frontier flights
JetBluePriceFrom $214Free CancellationRating
7.2
2,915 reviews
Search JetBlue flights
DeltaPriceFrom $274Free CancellationRating
8.0
7,981 reviews
Search Delta flights
United AirlinesPriceFrom $285Free CancellationRating
7.4
8,925 reviews
Search United Airlines flights
American AirlinesPriceFrom $332Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $401Free CancellationRating
8.0
4,246 reviews
Search Southwest flights

Traveling to a place near San Juan?

Book flights to San Juan if you plan to visit one of these locations
Carolina
Fajardo
Dorado
Luquillo
Caguas
Humacao
Rio Grande
Bayamón

Why use momondo?

Why should I use momondo to find a flight deal from Portland to San Juan?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Portland to San Juan. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Portland to San Juan with flexible booking policies on momondo?

Yes. All flights to San Juan from Portland on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Portland to San Juan?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to San Juan from Portland.

I’m not ready to book a flight from Portland to San Juan right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Portland to San Juan now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to San Juan and let you know when they change.

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