$162+ Cheap flights from Portland (PDX) to Luis Munoz Marin Intl (SJU)
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 4/21. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SJU
Apr 12 — Apr 191
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Portland to Luis Munoz Marin Intl with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Portland to Luis Munoz Marin Intl
Cheapest
Best
Last-minute
One-way
Cheapest flights from Portland to Luis Munoz Marin IntlExplore the most affordable flight options available from Portland to Luis Munoz Marin Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 13, 2026.
Explore the most affordable flight options available from Portland to Luis Munoz Marin Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 13, 2026.
This Southwest deal was found by Cheapflights users on 3/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/275:10 am
PDX
- SJU
2 stops15h 30m
Southwest
Thu 4/302:00 pm
SJU
- PDX
2 stops13h 10m
Southwest
Deal found 3/10![Southwest logo]()
$424
This American Airlines deal was found by Cheapflights users on 3/9. 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.
Fri 4/1711:40 pm
PDX
- SJU
1 stop20h 22m
American Airlines
Thu 4/236:45 am
SJU
- PDX
1 stop20h 09m
American Airlines
Deal found 3/9![American Airlines logo]()
$436
This American Airlines deal was found by Cheapflights users on 3/8. 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.
Wed 4/1511:40 pm
PDX
- SJU
1 stop20h 22m
American Airlines
Thu 4/303:34 pm
SJU
- PDX
1 stop11h 20m
American Airlines
Deal found 3/8![American Airlines logo]()
$441
This Southwest deal was found by Cheapflights users on 3/11. 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.
Mon 8/107:35 pm
PDX
- SJU
2 stops12h 25m
Southwest
Thu 8/208:55 pm
SJU
- PDX
2 stops17h 45m
Southwest
Deal found 3/11![Southwest logo]()
$446
This Southwest deal was found by Cheapflights users on 3/8. 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.
Mon 8/1010:45 pm
PDX
- SJU
1 stop11h 05m
Southwest
Mon 8/175:30 am
SJU
- PDX
1 stop12h 30m
Southwest
Deal found 3/8![Southwest logo]()
$448
This American Airlines deal was found by Cheapflights users on 3/8. 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.
Mon 4/612:59 am
PDX
- SJU
2 stops14h 11m
American Airlines
Tue 4/2111:43 am
SJU
- PDX
2 stops14h 13m
American Airlines
Deal found 3/8![American Airlines logo]()
$453
This American Airlines deal was found by Cheapflights users on 3/9. 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.
Tue 4/2111:23 pm
PDX
- SJU
1 stop18h 28m
American Airlines
Mon 5/46:45 am
SJU
- PDX
1 stop20h 09m
American Airlines
Deal found 3/9![American Airlines logo]()
$455
This American Airlines deal was found by Cheapflights users on 3/9. 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.
Wed 4/811:40 pm
PDX
- SJU
1 stop20h 22m
American Airlines
Wed 4/151:31 pm
SJU
- PDX
2 stops13h 26m
American Airlines
Deal found 3/9![American Airlines logo]()
$458
This Southwest deal was found by Cheapflights users on 3/11. 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.
Thu 8/1310:45 pm
PDX
- SJU
1 stop12h 45m
Southwest
Thu 8/205:30 am
SJU
- PDX
1 stop12h 30m
Southwest
Deal found 3/11![Southwest logo]()
$468
This United Airlines deal was found by Cheapflights users on 3/8. 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.
Sat 5/27:00 am
PDX
- SJU
1 stop10h 38m
United Airlines
Tue 5/57:00 am
SJU
- PDX
2 stops14h 46m
United Airlines
Deal found 3/8![United Airlines logo]()
$470
Best flights from Portland to Luis Munoz Marin IntlDiscover carefully curated flight deals from Portland to Luis Munoz Marin Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 13, 2026.
Discover carefully curated flight deals from Portland to Luis Munoz Marin Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 13, 2026.
This United Airlines deal was found by Cheapflights users on 3/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/215:00 am
PDX
- SJU
2 stops13h 24m
United Airlines
Tue 4/282:55 pm
SJU
- PDX
1 stop11h 03m
United Airlines
Deal found 3/10![United Airlines logo]()
$456
This Southwest deal was found by Cheapflights users on 3/8. 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.
Sun 9/610:45 pm
PDX
- SJU
2 stops12h 00m
Southwest
Sat 9/128:20 am
SJU
- PDX
2 stops14h 40m
Southwest
Deal found 3/8![Southwest logo]()
$470
This American Airlines deal was found by Cheapflights users on 3/7. 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.
Mon 6/2210:59 pm
PDX
- SJU
2 stops13h 49m
American Airlines
Mon 6/296:20 am
SJU
- PDX
1 stop20h 03m
American Airlines
Deal found 3/7![American Airlines logo]()
$518
This Southwest deal was found by Cheapflights users on 3/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/285:40 am
PDX
- SJU
2 stops12h 25m
Southwest
Wed 5/611:25 am
SJU
- PDX
2 stops14h 45m
Southwest
Deal found 3/10![Southwest logo]()
$472
This United Airlines deal was found by Cheapflights users on 3/11. 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.
Thu 4/910:56 pm
PDX
- SJU
1 stop12h 48m
United Airlines
Thu 4/162:55 pm
SJU
- PDX
1 stop11h 03m
United Airlines
Deal found 3/11![United Airlines logo]()
$501
This Southwest deal was found by Cheapflights users on 3/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/87:40 pm
PDX
- SJU
2 stops12h 05m
Southwest
Mon 7/136:30 am
SJU
- PDX
2 stops12h 50m
Southwest
Deal found 3/10![Southwest logo]()
$528
This United Airlines deal was found by Cheapflights users on 3/8. 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.
Mon 4/277:14 pm
PDX
- SJU
2 stops15h 31m
United Airlines
Fri 5/13:56 pm
SJU
- PDX
1 stop11h 03m
United Airlines
Deal found 3/8![United Airlines logo]()
$543
This Southwest deal was found by Cheapflights users on 3/7. 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.
Wed 4/85:40 am
PDX
- SJU
2 stops12h 25m
Southwest
Thu 4/910:00 am
SJU
- PDX
2 stops15h 40m
Southwest
Deal found 3/7![Southwest logo]()
$533
This Southwest deal was found by Cheapflights users on 3/7. 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.
Mon 6/227:40 pm
PDX
- SJU
2 stops11h 45m
Southwest
Mon 6/291:15 pm
SJU
- PDX
2 stops11h 55m
Southwest
Deal found 3/7![Southwest logo]()
$566
Last-minute flights from Portland to Luis Munoz Marin IntlDiscover last-minute flight deals from Portland to Luis Munoz Marin Intl. Data last updated March 13, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Luis Munoz Marin Intl. Data last updated March 13, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 3/9. 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.
Mon 3/3011:59 pm
PDX
- SJU
2 stops11h 51m
American Airlines
Wed 4/83:44 pm
SJU
- PDX
1 stop11h 09m
American Airlines
Deal found 3/9![American Airlines logo]()
$470
This American Airlines deal was found by Cheapflights users on 3/8. 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.
Mon 4/612:59 am
PDX
- SJU
2 stops14h 11m
American Airlines
Tue 4/216:45 am
SJU
- PDX
1 stop19h 04m
American Airlines
Deal found 3/8![American Airlines logo]()
$453
This American Airlines deal was found by Cheapflights users on 3/9. 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.
Wed 4/811:40 pm
PDX
- SJU
1 stop20h 22m
American Airlines
Wed 4/151:31 pm
SJU
- PDX
2 stops13h 26m
American Airlines
Deal found 3/9![American Airlines logo]()
$458
This Southwest deal was found by Cheapflights users on 3/7. 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.
Wed 4/85:40 am
PDX
- SJU
2 stops12h 25m
Southwest
Wed 4/158:10 am
SJU
- PDX
2 stops14h 05m
Southwest
Deal found 3/7![Southwest logo]()
$472
This American Airlines deal was found by Cheapflights users on 3/8. 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.
Wed 4/1511:40 pm
PDX
- SJU
1 stop20h 22m
American Airlines
Thu 4/303:34 pm
SJU
- PDX
1 stop11h 20m
American Airlines
Deal found 3/8![American Airlines logo]()
$441
This American Airlines deal was found by Cheapflights users on 3/9. 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.
Fri 4/1711:47 pm
PDX
- SJU
2 stops12h 48m
American Airlines
Thu 4/236:45 am
SJU
- PDX
1 stop19h 04m
American Airlines
Deal found 3/9![American Airlines logo]()
$436
This American Airlines deal was found by Cheapflights users on 3/9. 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.
Tue 4/2111:23 pm
PDX
- SJU
1 stop18h 28m
American Airlines
Mon 5/46:45 am
SJU
- PDX
1 stop20h 09m
American Airlines
Deal found 3/9![American Airlines logo]()
$455
This eDestinos deal was found by Cheapflights users on 3/12. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2112:38 pm
PDX
- SJU
3 stops34h 23m
Multiple Airlines
Mon 5/47:15 am
SJU
- PDX
2 stops40h 20m
Multiple Airlines
Deal found 3/12![Multiple Airlines logo]()
$474
This Southwest deal was found by Cheapflights users on 3/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/275:10 am
PDX
- SJU
2 stops15h 30m
Southwest
Thu 4/302:00 pm
SJU
- PDX
2 stops13h 10m
Southwest
Deal found 3/10![Southwest logo]()
$424
This United Airlines deal was found by Cheapflights users on 3/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/288:05 am
PDX
- SJU
1 stop10h 19m
United Airlines
Tue 5/51:00 am
SJU
- PDX
2 stops14h 35m
United Airlines
Deal found 3/10![United Airlines logo]()
$473
One-way flights from Portland to Luis Munoz Marin IntlSearch for one-way flight options from Portland to Luis Munoz Marin Intl. Find affordable one-way fares based on user searches. Data last updated March 13, 2026.
Search for one-way flight options from Portland to Luis Munoz Marin Intl. Find affordable one-way fares based on user searches. Data last updated March 13, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2112:38 pm
PDX
- SJU
2 stops18h 16m
Frontier
Deal found 3/10![Frontier logo]()
$162
This Kiwi.com deal was found by Cheapflights users on 3/7. 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.
Sat 4/2512:27 pm
PDX
- SJU
2 stops33h 31m
Multiple Airlines
Deal found 3/7![Multiple Airlines logo]()
$166
This Kiwi.com deal was found by Cheapflights users on 3/9. 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.
Sat 4/1812:27 pm
PDX
- SJU
2 stops34h 34m
Frontier
Deal found 3/9![Frontier logo]()
$168
This Kiwi.com deal was found by Cheapflights users on 3/8. 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 4/2611:15 am
PDX
- SJU
2 stops34h 43m
Multiple Airlines
Deal found 3/8![Multiple Airlines logo]()
$177
This Kiwi.com deal was found by Cheapflights users on 3/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/1011:58 am
PDX
- SJU
2 stops29h 51m
Frontier
Deal found 3/10![Frontier logo]()
$180
This Kiwi.com deal was found by Cheapflights users on 3/9. 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.
Sat 4/1812:27 pm
PDX
- SJU
3 stops31h 57m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$194
This Kiwi.com deal was found by Cheapflights users on 3/9. 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.
Tue 5/191:48 pm
PDX
- SJU
2 stops24h 42m
Frontier
Deal found 3/9![Frontier logo]()
$196
This Kiwi.com deal was found by Cheapflights users on 3/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2112:38 pm
PDX
- SJU
3 stops27h 44m
Multiple Airlines
Deal found 3/10![Multiple Airlines logo]()
$202
This Kiwi.com deal was found by Cheapflights users on 3/11. 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.
Mon 4/209:54 am
PDX
- SJU
2 stops21h 00m
Frontier
Deal found 3/11![Frontier logo]()
$203
This Kiwi.com deal was found by Cheapflights users on 3/9. 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 5/179:53 am
PDX
- SJU
2 stops25h 15m
Frontier
Deal found 3/9![Frontier logo]()
$204
This Kiwi.com deal was found by Cheapflights users on 3/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/1011:58 am
PDX
- SJU
3 stops27h 57m
Multiple Airlines
Deal found 3/10![Multiple Airlines logo]()
$211
This American Airlines deal was found by Cheapflights users on 3/9. 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.
Tue 4/217:23 am
PDX
- SJU
2 stops12h 39m
American Airlines
Deal found 3/9![American Airlines logo]()
$218
Find flight deals from Portland to Luis Munoz Marin Intl
Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) to Luis Munoz Marin Intl (SJU). 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 March 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $424 (Southwest) |
One-way from | $162 (Kiwi.com) |
Popular in | December |
Cheapest in | October |
Average price | $683 |
Cheapflights Fare Finder
Customize your flight search to find flights from Portland to Luis Munoz Marin Intl 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 March 13, 2026.
Use the filters below to find and compare flights from Portland to San Juan Luis Munoz Marin Intl Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PortlandSan Juan
PDX - SJU
PDXSJU
Portland
Tue 4/21
5:00 am-9:24 pm
2 stops13h 24m
San Juan Luis Munoz Marin Intl
Tue 4/28
2:55 pm-10:58 pm
1 stop11h 03m
$456
PortlandSan Juan
PDX - SJU
PDXSJU
Portland
Sun 9/6
10:45 pm-1:45 pm
2 stops12h 00m
San Juan Luis Munoz Marin Intl
Sat 9/12
8:20 am-8:00 pm
2 stops14h 40m
$470
PortlandSan Juan
PDX - SJU
PDXSJU
Portland
Tue 4/28
5:40 am-9:05 pm
2 stops12h 25m
San Juan Luis Munoz Marin Intl
Wed 5/6
11:25 am-11:10 pm
2 stops14h 45m
$472
PortlandSan Juan
PDX - SJU
PDXSJU
Portland
Thu 4/9
10:56 pm-2:44 pm
1 stop12h 48m
San Juan Luis Munoz Marin Intl
Thu 4/16
2:55 pm-10:58 pm
1 stop11h 03m
$501
PortlandSan Juan
PDX - SJU
PDXSJU
Portland
Mon 6/22
10:59 pm-3:48 pm
2 stops13h 49m
San Juan Luis Munoz Marin Intl
Mon 6/29
6:20 am-11:23 pm
1 stop20h 03m
$518
PortlandSan Juan
PDX - SJU
PDXSJU
Portland
Wed 7/8
7:40 pm-10:45 am
2 stops12h 05m
San Juan Luis Munoz Marin Intl
Mon 7/13
6:30 am-4:20 pm
2 stops12h 50m
$528
PortlandSan Juan
PDX - SJU
PDXSJU
Portland
Wed 4/8
5:40 am-9:05 pm
2 stops12h 25m
San Juan Luis Munoz Marin Intl
Thu 4/9
10:00 am-10:40 pm
2 stops15h 40m
$533
PortlandSan Juan
PDX - SJU
PDXSJU
Portland
Mon 4/27
7:14 pm-1:45 pm
2 stops15h 31m
San Juan Luis Munoz Marin Intl
Fri 5/1
3:56 pm-11:59 pm
1 stop11h 03m
$543
Quickest round-trip
PortlandSan Juan
PDX - SJU
PDXSJU
Portland
Mon 6/22
7:40 pm-10:25 am
2 stops11h 45m
San Juan Luis Munoz Marin Intl
Mon 6/29
1:15 pm-10:10 pm
2 stops11h 55m
$566
Cheapest one-way
PortlandSan Juan
PDX - SJU
PDXSJU
Portland
Sat 4/18
12:27 pm-2:01 am
2 stops34h 34m
$168
Showing 1-10 of 19 resultsSorted by cheapest first
Compare providers for flights from Portland to Luis Munoz Marin Intl
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Portland to Luis Munoz Marin Intl in March.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 stars |
- Most accurate provider: When it comes to deals on Portland-San Juan Luis Munoz Marin Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland-San Juan Luis Munoz Marin Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland-San Juan Luis Munoz Marin Intl Airport flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Portland-San Juan Luis Munoz Marin Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Portland-San Juan Luis Munoz Marin Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Portland to Luis Munoz Marin Intl
Have a flexible travel schedule? Discover the best time to fly to Luis Munoz Marin Intl from Portland with our price prediction graph.
PDX-SJU
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 Luis Munoz Marin Intl Airport
How far ahead should I book a flight from Portland to San Juan Luis Munoz Marin Intl Airport?
Use this chart to determine the optimal time to book a round-trip flight from Portland to Luis Munoz Marin Intl. Price data was last updated on March 6, 2026.
Booking 75 days in advance of your planned departure date is, on average, the best time to get cheap flights from Portland to San Juan Luis Munoz Marin Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Portland to San Juan Luis Munoz Marin Intl Airport?
Currently, August is the cheapest month in which you can book a flight from Portland to San Juan Luis Munoz Marin Intl Airport (average of $185). Flying from Portland to San Juan Luis Munoz Marin Intl Airport in January is currently the most expensive (average of $411). 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.
How much does it cost to fly round-trip from Portland to San Juan Luis Munoz Marin Intl Airport?
Reviews of airlines servicing Luis Munoz Marin Intl
Get insights into the airlines that provide service to Luis Munoz Marin Intl. 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 Luis Munoz Marin Intl. Reviews last updated March 13, 2026.
Read reviews from past customers who have flown Southwest,Delta, andUnited Airlines from Portland to San Juan Luis Munoz Marin Intl Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Comfort
8.0
Overall
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Boarding
8.1
Comfort
8.0
Overall
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Boarding
8.1
Comfort
8.0
Overall
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Boarding
8.1
Comfort
8.0
Overall
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Boarding
8.1
Comfort
8.0
Overall
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Boarding
8.1
Comfort
8.0
Overall
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Related info for your journey
Find useful and relevant information for your journey from Portland to Luis Munoz Marin Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near San Juan Luis Munoz Marin Intl Airport?
Book flights to San Juan Luis Munoz Marin Intl Airport if you plan to visit one of these locationsFajardo
Dorado
Luquillo
Rio Grande
Humacao
Bayamón
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Luis Munoz Marin Intl flight routes
Other flight options
Other flights from Portland
Popular flights
Alternative routes for Portland to Luis Munoz Marin Intl
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Luis Munoz Marin Intl by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Portland to Luis Munoz Marin Intl by cabin class
Find flights from Portland to Luis Munoz Marin Intl, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Luis Munoz Marin Intl
Explore flights to Luis Munoz Marin Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on March 13, 2026.
Portland and Luis Munoz Marin Intl flights
Browse other Portland and Luis Munoz Marin Intl flight options. Last updated on March 13, 2026.
Other flights from Portland
Browse through other flights departing from Portland. Flights are based on user searches made on Cheapflights and were last updated on March 13, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 6 airlines flying from Portland to Luis Munoz Marin Intl
Discover the top 6 airlines that operate flights from Portland to Luis Munoz Marin Intl. 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 March 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$185 | Average$369 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$241 | Average$415 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$255 | Average$492 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$399 | Average$588 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$399 | Average$624 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$408 | Average$579 | FlexibilityNo cancel fee | On-time63% |