Latest deals
Insights
FAQs
Reviews
Price Alerts

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 8/31. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Portland to San Juan

Cheap round-trip flights

Delta Logo
9:45 pm - 2:15 pmPDX-SJU
12h 30m1 stop
Delta Logo
7:00 am - 8:47 pmSJU-PDX
17h 47m2 stops
$399Delta
Find Deal
Mon, Jan 12 - Thu, Jan 15
Spirit Airlines Logo
12:07 pm - 2:11 pmPDX-SJU
23h 04m3 stops
Spirit Airlines Logo
6:44 am - 11:11 amSJU-PDX
31h 27m3 stops
$418Spirit Airlines
Find Deal
Mon, Sep 8 - Mon, Sep 15
Spirit Airlines Logo
8:18 pm - 2:17 pmPDX-SJU
14h 59m2 stops
Spirit Airlines Logo
2:38 pm - 7:23 pmSJU-PDX
31h 45m3 stops
$419Spirit Airlines
Find Deal
Sat, Sep 6 - Sun, Sep 14
United Airlines Logo
10:32 pm - 1:45 pmPDX-SJU
12h 13m1 stop
United Airlines Logo
1:05 am - 11:41 amSJU-PDX
13h 36m2 stops
$429United Airlines
Find Deal
Sat, Oct 11 - Fri, Oct 17
Spirit Airlines Logo
7:52 pm - 2:17 pmPDX-SJU
15h 25m2 stops
Spirit Airlines Logo
2:38 pm - 7:23 pmSJU-PDX
31h 45m3 stops
$438Spirit Airlines
Find Deal
Sun, Aug 31 - Sun, Sep 7
American Airlines Logo
9:52 pm - 9:30 pmPDX-SJU
20h 38m1 stop
American Airlines Logo
1:40 pm - 12:05 amSJU-PDX
13h 25m2 stops
$462American Airlines
Find Deal
Thu, Aug 21 - Thu, Sep 11
American Airlines Logo
11:12 pm - 10:49 pmPDX-SJU
20h 37m1 stop
American Airlines Logo
12:01 pm - 12:05 amSJU-PDX
15h 04m2 stops
$474American Airlines
Find Deal
Wed, Aug 27 - Wed, Sep 10
Logo
6:36 pm - 4:14 pmPDX-SJU
17h 38m1 stop
Logo
9:49 pm - 9:36 pmSJU-PDX
27h 47m3 stops
$478
Find Deal
Fri, Nov 7 - Sun, Nov 16
United Airlines Logo
10:17 pm - 1:45 pmPDX-SJU
12h 28m1 stop
United Airlines Logo
1:05 am - 12:42 pmSJU-PDX
14h 37m2 stops
$484United Airlines
Find Deal
Sun, Sep 28 - Mon, Sep 29
Logo
6:36 pm - 5:34 pmPDX-SJU
18h 58m2 stops
Logo
9:49 pm - 9:36 pmSJU-PDX
27h 47m3 stops
$557
Find Deal
Fri, Nov 7 - Sun, Nov 16

United Airlines flights from Portland to San Juan

Our best United Airlines deals on Portland to San Juan flight tickets
United Airlines
Oct 11
PDX10:32 pmPortland
12h 13m
1 stop
SJU1:45 pmSan Juan Luis Munoz Marin Intl
Oct 17
SJU1:05 amSan Juan Luis Munoz Marin Intl
13h 36m
2 stops
PDX11:41 amPortland
$429
Find similar
United Airlines
Sep 28
PDX10:17 pmPortland
12h 28m
1 stop
SJU1:45 pmSan Juan Luis Munoz Marin Intl
Sep 29
SJU1:05 amSan Juan Luis Munoz Marin Intl
14h 37m
2 stops
PDX12:42 pmPortland
$484
Find similar
United Airlines
Sep 6
PDX7:35 pmPortland
16h 09m
2 stops
SJU2:44 pmSan Juan Luis Munoz Marin Intl
Sep 13
SJU1:05 amSan Juan Luis Munoz Marin Intl
10h 48m
1 stop
PDX8:53 amPortland
$485
Find similar

American Airlines flights from Portland to San Juan

Our best American Airlines deals on Portland to San Juan flight tickets
American Airlines
Aug 21
PDX9:52 pmPortland
20h 38m
1 stop
SJU9:30 pmSan Juan Luis Munoz Marin Intl
Sep 11
SJU1:40 pmSan Juan Luis Munoz Marin Intl
13h 25m
2 stops
PDX12:05 amPortland
$462
Find similar
American Airlines
Aug 27
PDX11:12 pmPortland
20h 37m
1 stop
SJU10:49 pmSan Juan Luis Munoz Marin Intl
Sep 10
SJU12:01 pmSan Juan Luis Munoz Marin Intl
15h 04m
2 stops
PDX12:05 amPortland
$474
Find similar
American Airlines
Dec 3
PDX7:59 amPortland
8h 56m
1 stop
SJU8:55 pmSan Juan Luis Munoz Marin Intl
Dec 10
SJU2:50 pmSan Juan Luis Munoz Marin Intl
11h 58m
2 stops
PDX10:48 pmPortland
$482
Find similar

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 August 4, 2025.
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

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Mon 1/12

9:45 pm-2:15 pm

1 stop12h 30m

San Juan Luis Munoz Marin Intl

Thu 1/15

7:00 am-8:47 pm

2 stops17h 47m

$399

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Mon 9/8

12:07 pm-2:11 pm

3 stops23h 04m

San Juan Luis Munoz Marin Intl

Mon 9/15

6:44 am-11:11 am

3 stops31h 27m

$418

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Sat 9/6

8:18 pm-2:17 pm

2 stops14h 59m

San Juan Luis Munoz Marin Intl

Sun 9/14

2:38 pm-7:23 pm

3 stops31h 45m

$419

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Sat 10/11

10:32 pm-1:45 pm

1 stop12h 13m

San Juan Luis Munoz Marin Intl

Fri 10/17

1:05 am-11:41 am

2 stops13h 36m

$429

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Sun 8/31

7:52 pm-2:17 pm

2 stops15h 25m

San Juan Luis Munoz Marin Intl

Sun 9/7

2:38 pm-7:23 pm

3 stops31h 45m

$438

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Thu 8/21

9:52 pm-9:30 pm

1 stop20h 38m

San Juan Luis Munoz Marin Intl

Thu 9/11

1:40 pm-12:05 am

2 stops13h 25m

$462

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Wed 8/27

11:12 pm-10:49 pm

1 stop20h 37m

San Juan Luis Munoz Marin Intl

Wed 9/10

12:01 pm-12:05 am

2 stops15h 04m

$474

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Fri 11/7

6:36 pm-4:14 pm

1 stop17h 38m

San Juan Luis Munoz Marin Intl

Sun 11/16

9:49 pm-9:36 pm

3 stops27h 47m

$478

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Sun 9/28

10:17 pm-1:45 pm

1 stop12h 28m

San Juan Luis Munoz Marin Intl

Mon 9/29

1:05 am-12:42 pm

2 stops14h 37m

$484

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Fri 11/7

6:36 pm-5:34 pm

2 stops18h 58m

San Juan Luis Munoz Marin Intl

Sun 11/16

9:49 pm-9:36 pm

3 stops27h 47m

$557

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 October, then September is your next best option. Flight prices from Portland to San Juan during September average around $451.

What is the cheapest day to depart on your flight to San Juan?

The cheapest day to depart from Portland to San Juan is on a Tuesday when prices can be found for as low as $454. The most expensive day to fly to San Juan is Thursday, with ticket prices averaging around $655.

What is the cheapest time of day to depart on your flight to San Juan?

The cheapest time of day to fly to San Juan is in the afternoon when flights can be purchased for as low as $428. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $602 on average. Flights to San Juan from Portland in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

How far in advance should I book a flight 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 $565 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 $449 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

Best Price Found

$178

Fastest flight time

8h 56m

Direct flights

None

Airports in San Juan

1 airport
The best one-way flight to San Juan from Portland in the past 72 hours is $178. The best round-trip flight deal from Portland to San Juan found on momondo in the last 72 hours is $399.
The fastest flight from Portland to San Juan takes 8h 56m
There are no direct flights from Portland to San Juan. Popular non-direct route for this connection is Portland Airport - San Juan Luis Munoz Marin Intl Airport.
There is 1 airport near San Juan: San Juan Luis Munoz Marin Intl (SJU)
Search flight deals

  • 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 8h 56m.

  • 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
JetBluePriceFrom $185Free CancellationRating
7.2
2,915 reviews
Search JetBlue flights
Spirit AirlinesPriceFrom $248Free CancellationRating
6.3
8,053 reviews
Search Spirit Airlines flights
United AirlinesPriceFrom $325Free CancellationRating
7.4
8,912 reviews
Search United Airlines flights
American AirlinesPriceFrom $335Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $369Free CancellationRating
8.0
7,987 reviews
Search Delta flights
SouthwestPriceFrom $450Free CancellationRating
8.0
4,246 reviews
Search Southwest 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

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 8/9
Sat 8/16
By creating a price alert you accept our terms of use and privacy policy.

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