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Cheap flights from Portland to San Juan from $178

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 to San Juan departing on 6/2. 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 to San Juan

Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
11:30 pm - 1:35 pm
PDX
-
SJU
11h 05m
2 stops
Southwest Logo
5:00 am - 3:00 pm
SJU
-
PDX
13h 00m
2 stops
$466Southwest
Mon, Aug 24 - Fri, Aug 28
Southwest Logo
10:45 pm - 1:00 pm
PDX
-
SJU
11h 15m
1 stop
Southwest Logo
5:30 am - 12:45 pm
SJU
-
PDX
10h 15m
1 stop
$498Southwest
Sat, Aug 22 - Sun, Aug 30
Southwest Logo
10:45 pm - 2:30 pm
PDX
-
SJU
12h 45m
1 stop
Southwest Logo
5:30 am - 3:00 pm
SJU
-
PDX
12h 30m
1 stop
$516Southwest
Thu, Sep 3 - Thu, Sep 10
Delta Logo
5:51 pm - 1:20 pm
PDX
-
SJU
16h 29m
2 stops
Delta Logo
1:16 pm - 11:44 pm
SJU
-
PDX
13h 28m
2 stops
$530Delta
Fri, May 29 - Thu, Jun 4
Delta Logo
7:00 am - 11:44 pm
PDX
-
SJU
13h 44m
1 stop
Delta Logo
7:00 am - 11:53 pm
SJU
-
PDX
19h 53m
2 stops
$531Delta
Mon, Sep 14 - Tue, Sep 22
American Airlines Logo
10:57 pm - 2:50 pm
PDX
-
SJU
12h 53m
2 stops
American Airlines Logo
2:25 pm - 11:30 pm
SJU
-
PDX
12h 05m
1 stop
$532American Airlines
Tue, Jul 28 - Mon, Aug 3
American Airlines Logo
10:30 pm - 1:33 pm
PDX
-
SJU
12h 03m
1 stop
American Airlines Logo
7:00 am - 11:30 pm
SJU
-
PDX
19h 30m
1 stop
$533American Airlines
Tue, Jul 28 - Mon, Aug 3
American Airlines Logo
9:47 pm - 2:50 pm
PDX
-
SJU
14h 03m
1 stop
American Airlines Logo
7:00 am - 11:30 pm
SJU
-
PDX
19h 30m
1 stop
$534American Airlines
Tue, Jul 28 - Mon, Aug 3
American Airlines Logo
11:20 pm - 2:38 pm
PDX
-
SJU
12h 18m
2 stops
American Airlines Logo
3:44 pm - 11:07 pm
SJU
-
PDX
10h 23m
1 stop
$535American Airlines
Wed, Aug 12 - Fri, Aug 21
American Airlines Logo
5:07 am - 11:50 pm
PDX
-
SJU
15h 43m
1 stop
American Airlines Logo
7:00 am - 11:30 pm
SJU
-
PDX
19h 30m
1 stop
$536American Airlines
Tue, Jul 28 - Mon, Aug 3

American Airlines flights from Portland to San Juan

Our best American Airlines deals on Portland to San Juan flight tickets
American Airlines
Jul 28
PDX10:57 pmPortland
12h 53m
2 stops
SJU2:50 pmSan Juan Luis Munoz Marin Intl
Aug 3
SJU2:25 pmSan Juan Luis Munoz Marin Intl
12h 05m
1 stop
PDX11:30 pmPortland
$532
American Airlines
Jul 28
PDX10:30 pmPortland
12h 03m
1 stop
SJU1:33 pmSan Juan Luis Munoz Marin Intl
Aug 3
SJU7:00 amSan Juan Luis Munoz Marin Intl
19h 30m
1 stop
PDX11:30 pmPortland
$533
American Airlines
Jul 28
PDX9:47 pmPortland
14h 03m
1 stop
SJU2:50 pmSan Juan Luis Munoz Marin Intl
Aug 3
SJU7:00 amSan Juan Luis Munoz Marin Intl
19h 30m
1 stop
PDX11:30 pmPortland
$534

Southwest flights from Portland to San Juan

Our best Southwest deals on Portland to San Juan flight tickets
Southwest
Aug 24
PDX11:30 pmPortland
11h 05m
2 stops
SJU1:35 pmSan Juan Luis Munoz Marin Intl
Aug 28
SJU5:00 amSan Juan Luis Munoz Marin Intl
13h 00m
2 stops
PDX3:00 pmPortland
$466
Southwest
Aug 22
PDX10:45 pmPortland
15h 20m
2 stops
SJU5:05 pmSan Juan Luis Munoz Marin Intl
Aug 30
SJU6:00 amSan Juan Luis Munoz Marin Intl
11h 05m
2 stops
PDX2:05 pmPortland
$498
Southwest
Sep 3
PDX10:45 pmPortland
12h 45m
1 stop
SJU2:30 pmSan Juan Luis Munoz Marin Intl
Sep 10
SJU5:30 amSan Juan Luis Munoz Marin Intl
12h 30m
1 stop
PDX3:00 pmPortland
$516

momondo 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, momondo users made 832,500 searches. Data last updated May 7, 2026.
Use the filters below to find and compare flights from Portland to San Juan that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Mon 8/24

11:30 pm-1:35 pm

2 stops11h 05m

San Juan Luis Munoz Marin Intl

Fri 8/28

5:00 am-3:00 pm

2 stops13h 00m

$466
Quickest round-trip

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Sat 8/22

10:45 pm-1:00 pm

1 stop11h 15m

San Juan Luis Munoz Marin Intl

Sun 8/30

5:30 am-12:45 pm

1 stop10h 15m

$498

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Thu 9/3

10:45 pm-2:30 pm

1 stop12h 45m

San Juan Luis Munoz Marin Intl

Thu 9/10

5:30 am-3:00 pm

1 stop12h 30m

$516

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Fri 5/29

5:51 pm-1:20 pm

2 stops16h 29m

San Juan Luis Munoz Marin Intl

Thu 6/4

1:16 pm-11:44 pm

2 stops13h 28m

$530

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Mon 9/14

7:00 am-11:44 pm

1 stop13h 44m

San Juan Luis Munoz Marin Intl

Tue 9/22

7:00 am-11:53 pm

2 stops19h 53m

$531

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Tue 7/28

10:57 pm-2:50 pm

2 stops12h 53m

San Juan Luis Munoz Marin Intl

Mon 8/3

2:25 pm-11:30 pm

1 stop12h 05m

$532

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Tue 7/28

10:30 pm-1:33 pm

1 stop12h 03m

San Juan Luis Munoz Marin Intl

Mon 8/3

7:00 am-11:30 pm

1 stop19h 30m

$533

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Tue 7/28

9:47 pm-2:50 pm

1 stop14h 03m

San Juan Luis Munoz Marin Intl

Mon 8/3

7:00 am-11:30 pm

1 stop19h 30m

$534

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Wed 8/12

11:20 pm-2:38 pm

2 stops12h 18m

San Juan Luis Munoz Marin Intl

Fri 8/21

3:44 pm-11:07 pm

1 stop10h 23m

$535

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Tue 7/28

5:07 am-11:50 pm

1 stop15h 43m

San Juan Luis Munoz Marin Intl

Mon 8/3

7:00 am-11:30 pm

1 stop19h 30m

$536

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Juan from

How to get the cheapest flight ticket from Portland to San Juan

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 and San Juan?

What is the cheapest month to fly to San Juan?

If you’re not able to fly to San Juan in September, then August is your next best option. Flight prices from Portland to San Juan during August average around $185.

How far in advance should I book a flight from Portland to San Juan?

You are more likely to see cheaper flights to San Juan from Portland when booking weeks ahead of your departure date. In general, you can expect to find flights to San Juan for around $577 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Juan from Portland for as low as $463 on momondo.

Cheap Portland to San Juan flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland to San Juan

Fastest flight time

10h 04m

Direct flights

None
The fastest flight from Portland to San Juan takes 10h 04m
There are no direct flights from Portland to San Juan. There are no popular flight routes from Portland to San Juan.
Search flight deals

Frequently asked questions about flying from Portland to San Juan

  • How far is Portland to San Juan by plane?

    Portland and San Juan are 3707.1 mi apart from one another. A reasonable flight in good conditions will take 10h 04m.

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

    Prices for flights from Portland Airport to San Juan are refreshed on a daily basis.

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

  • How old do you have to be to fly from Portland Airport to San Juan?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Portland Airport to San Juan.

  • What documentation or ID do you need to fly to San Juan?

    The travel and health documents required for your trip to San Juan can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at San Juan. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Portland to San Juan

Compare and see reviews for airlines that fly from Portland to San Juan with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $235Free CancellationRating
7.9
8,459 reviews
Search Delta flights
American AirlinesPriceFrom $399Free CancellationRating
7.1
11,669 reviews
Search American Airlines flights
SouthwestPriceFrom $408Free CancellationRating
7.9
4,301 reviews
Search Southwest flights
United AirlinesPriceFrom $418Free CancellationRating
7.4
9,690 reviews
Search United Airlines flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Portland to San Juan for you.

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

Yes. momondo enables you to select and highlight flights to San Juan from Portland with this policy.

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

momondo provides multiple filters to help you find the best flight to San Juan from Portland. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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 simply researching potential flights to San Juan, momondo offers a useful price alert feature which will track prices for flights to San Juan from Portland and alert you when they change.

An easier way to manage your San Juan trip

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Find better results for your trip to Puerto Rico

Fly into one of these airports located in San Juan

Airports listed have a maximum distance of 7.1 mi from San Juan
San Juan Isla Grande Airport
San Juan Luis Munoz Marin Intl Airport