$171+ Cheap flights from Portland, ME (PWM) 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 10/23. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — SJU
Aug 24 — Aug 311
Round-trip
1 adult, Economy
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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 July 25, 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 July 25, 2026.
This United Airlines deal was found by Cheapflights users on 7/21. 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 10/205:15 am
PWM
- SJU
1 stop7h 19m
United Airlines
Mon 10/267:25 am
SJU
- PWM
2 stops15h 58m
United Airlines
Deal found 7/21![United Airlines logo]()
$342
This Delta deal was found by Cheapflights users on 7/24. 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.
Wed 9/164:20 pm
PWM
- SJU
1 stop7h 29m
Delta
Wed 9/232:59 pm
SJU
- PWM
1 stop8h 29m
Delta
Deal found 7/24![Delta logo]()
$352
This Southwest deal was found by Cheapflights users on 7/23. 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 11/15:20 am
PWM
- SJU
2 stops10h 40m
Southwest
Fri 11/65:35 am
SJU
- PWM
2 stops11h 55m
Southwest
Deal found 7/23![Southwest logo]()
$353
This United Airlines deal was found by Cheapflights users on 7/20. 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 8/246:03 am
PWM
- SJU
1 stop8h 41m
United Airlines
Fri 8/284:55 pm
SJU
- PWM
1 stop7h 04m
United Airlines
Deal found 7/20![United Airlines logo]()
$360
This Southwest deal was found by Cheapflights users on 7/21. 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 10/2011:35 am
PWM
- SJU
2 stops10h 15m
Southwest
Mon 10/266:30 am
SJU
- PWM
2 stops10h 25m
Southwest
Deal found 7/21![Southwest logo]()
$384
This Kiwi.com deal was found by Cheapflights users on 7/23. 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 10/105:09 pm
PWM
- SJU
2 stops30h 48m
Multiple Airlines
Fri 10/169:49 pm
SJU
- PWM
1 stop11h 19m
Multiple Airlines
Deal found 7/23![Multiple Airlines logo]()
$386
This FlightHub deal was found by Cheapflights users on 7/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/166:00 am
PWM
- SJU
2 stops10h 51m
JetBlue
Wed 9/239:30 am
SJU
- PWM
2 stops14h 22m
JetBlue
Deal found 7/20![JetBlue logo]()
$387
This Orbitz deal was found by Cheapflights users on 7/20. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/216:00 am
PWM
- SJU
2 stops10h 51m
JetBlue
Mon 10/191:00 pm
SJU
- PWM
1 stop10h 52m
JetBlue
Deal found 7/20![JetBlue logo]()
$394
This Southwest deal was found by Cheapflights users on 7/23. 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.
Sat 10/105:35 am
PWM
- SJU
1 stop6h 50m
Southwest
Fri 10/165:35 pm
SJU
- PWM
1 stop6h 20m
Southwest
Deal found 7/23![Southwest logo]()
$395
This Delta deal was found by Cheapflights users on 7/23. 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.
Thu 10/224:15 pm
PWM
- SJU
1 stop7h 41m
Delta
Mon 10/261:06 pm
SJU
- PWM
1 stop10h 43m
Delta
Deal found 7/23![Delta logo]()
$403
This United Airlines deal was found by Cheapflights users on 7/20. 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 9/216:06 am
PWM
- SJU
1 stop7h 39m
United Airlines
Mon 10/194:55 pm
SJU
- PWM
1 stop7h 04m
United Airlines
Deal found 7/20![United Airlines logo]()
$405
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 8/188:00 am
PWM
- SJU
2 stops16h 56m
Multiple Airlines
Tue 8/255:37 pm
SJU
- PWM
1 stop24h 21m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$406
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 July 25, 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 July 25, 2026.
This United Airlines deal was found by Cheapflights users on 7/20. 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 10/246:00 am
PWM
- SJU
1 stop8h 44m
United Airlines
Sat 11/78:05 am
SJU
- PWM
1 stop7h 28m
United Airlines
Deal found 7/20![United Airlines logo]()
$342
This Delta deal was found by Cheapflights users on 7/23. 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 10/204:15 pm
PWM
- SJU
1 stop7h 41m
Delta
Mon 10/267:00 am
SJU
- PWM
1 stop6h 53m
Delta
Deal found 7/23![Delta logo]()
$342
This United Airlines deal was found by Cheapflights users on 7/20. 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 8/246:03 am
PWM
- SJU
2 stops14h 35m
United Airlines
Fri 8/284:55 pm
SJU
- PWM
1 stop7h 04m
United Airlines
Deal found 7/20![United Airlines logo]()
$342
This Delta deal was found by Cheapflights users on 7/21. 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.
Thu 8/202:53 pm
PWM
- SJU
1 stop8h 59m
Delta
Thu 8/2712:56 pm
SJU
- PWM
1 stop10h 17m
Delta
Deal found 7/21![Delta logo]()
$342
This United Airlines deal was found by Cheapflights users on 7/21. 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 10/205:15 am
PWM
- SJU
1 stop7h 19m
United Airlines
Mon 10/267:25 am
SJU
- PWM
2 stops15h 58m
United Airlines
Deal found 7/21![United Airlines logo]()
$342
This Delta deal was found by Cheapflights users on 7/24. 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.
Thu 10/226:00 am
PWM
- SJU
1 stop10h 33m
Delta
Mon 10/267:00 am
SJU
- PWM
1 stop6h 53m
Delta
Deal found 7/24![Delta logo]()
$413
This United Airlines deal was found by Cheapflights users on 7/20. 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 9/196:06 am
PWM
- SJU
2 stops14h 32m
United Airlines
Sat 9/261:25 pm
SJU
- PWM
2 stops10h 34m
United Airlines
Deal found 7/20![United Airlines logo]()
$428
This United Airlines deal was found by Cheapflights users on 7/22. 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 9/195:15 am
PWM
- SJU
1 stop7h 19m
United Airlines
Wed 9/237:00 am
SJU
- PWM
2 stops16h 32m
United Airlines
Deal found 7/22![United Airlines logo]()
$432
Last-minute flights from Portland to Luis Munoz Marin IntlDiscover last-minute flight deals from Portland to Luis Munoz Marin Intl. Data last updated July 25, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Luis Munoz Marin Intl. Data last updated July 25, 2026 and is based on user searches.
This Priceline deal was found by Cheapflights users on 7/21. 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.
Tue 8/111:25 pm
PWM
- SJU
1 stop9h 34m
JetBlue
Sat 8/155:01 am
SJU
- PWM
1 stop8h 44m
JetBlue
Deal found 7/21![JetBlue logo]()
$459
This Expedia deal was found by Cheapflights users on 7/21. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/132:40 pm
PWM
- SJU
2 stops18h 39m
JetBlue
Mon 8/178:55 pm
SJU
- PWM
2 stops15h 35m
JetBlue
Deal found 7/21![JetBlue logo]()
$481
This Delta deal was found by Cheapflights users on 7/22. 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.
Thu 8/136:00 am
PWM
- SJU
1 stop10h 33m
Delta
Tue 8/185:50 pm
SJU
- PWM
1 stop7h 09m
Delta
Deal found 7/22![Delta logo]()
$484
This Expedia deal was found by Cheapflights users on 7/21. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/142:45 pm
PWM
- SJU
1 stop9h 28m
JetBlue
Tue 8/188:30 pm
SJU
- PWM
2 stops17h 15m
JetBlue
Deal found 7/21![JetBlue logo]()
$439
This Delta deal was found by Cheapflights users on 7/21. 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.
Fri 8/146:00 am
PWM
- SJU
1 stop10h 33m
Delta
Tue 8/185:50 pm
SJU
- PWM
1 stop7h 09m
Delta
Deal found 7/21![Delta logo]()
$464
This Delta deal was found by Cheapflights users on 7/21. 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.
Mon 8/172:14 pm
PWM
- SJU
1 stop8h 15m
Delta
Fri 8/215:50 pm
SJU
- PWM
1 stop7h 09m
Delta
Deal found 7/21![Delta logo]()
$403
This American Airlines deal was found by Cheapflights users on 7/21. 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 8/171:25 pm
PWM
- SJU
1 stop10h 34m
American Airlines
Fri 8/217:30 am
SJU
- PWM
2 stops13h 51m
American Airlines
Deal found 7/21![American Airlines logo]()
$476
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 8/188:00 am
PWM
- SJU
2 stops16h 56m
Multiple Airlines
Tue 8/255:37 pm
SJU
- PWM
1 stop24h 21m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$406
This American Airlines deal was found by Cheapflights users on 7/21. 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 8/185:30 am
PWM
- SJU
2 stops13h 03m
American Airlines
Tue 8/257:30 am
SJU
- PWM
2 stops10h 36m
American Airlines
Deal found 7/21![American Airlines logo]()
$418
This Delta deal was found by Cheapflights users on 7/21. 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.
Thu 8/202:53 pm
PWM
- SJU
1 stop8h 59m
Delta
Thu 8/2712:56 pm
SJU
- PWM
1 stop10h 17m
Delta
Deal found 7/21![Delta logo]()
$342
This United Airlines deal was found by Cheapflights users on 7/20. 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 8/246:03 am
PWM
- SJU
1 stop8h 41m
United Airlines
Fri 8/284:55 pm
SJU
- PWM
1 stop7h 04m
United Airlines
Deal found 7/20![United Airlines logo]()
$360
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 July 25, 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 July 25, 2026.
This Delta deal was found by Cheapflights users on 7/22. 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.
Fri 10/234:15 pm
PWM
- SJU
1 stop7h 41m
Delta
Deal found 7/22![Delta logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 8/317:00 am
PWM
- SJU
3 stops17h 56m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$205
This Delta deal was found by Cheapflights users on 7/24. 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.
Fri 12/1110:00 am
PWM
- SJU
1 stop6h 20m
Delta
Deal found 7/24![Delta logo]()
$232
This Delta deal was found by Cheapflights users on 7/24. 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.
Sun 11/222:35 pm
PWM
- SJU
1 stop8h 20m
Delta
Deal found 7/24![Delta logo]()
$237
This Southwest deal was found by Cheapflights users on 7/21. 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 7/291:05 pm
PWM
- SJU
2 stops10h 45m
Southwest
Deal found 7/21![Southwest logo]()
$246
This Delta deal was found by Cheapflights users on 7/23. 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.
Thu 8/66:00 am
PWM
- SJU
1 stop10h 33m
Delta
Deal found 7/23![Delta logo]()
$252
This FlightHub deal was found by Cheapflights users on 7/22. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:00 am
PWM
- SJU
2 stops17h 58m
JetBlue
Deal found 7/22![JetBlue logo]()
$254
This Kiwi.com deal was found by Cheapflights users on 7/23. 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 8/44:44 pm
PWM
- SJU
2 stops44h 57m
Multiple Airlines
Deal found 7/23![Multiple Airlines logo]()
$268
This United Airlines deal was found by Cheapflights users on 7/23. 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 8/45:15 am
PWM
- SJU
1 stop7h 19m
United Airlines
Deal found 7/23![United Airlines logo]()
$289
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 (PWM) 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 July 25, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $342 (United Airlines) |
One-way from | $171 (Delta) |
Popular in | April |
Cheapest in | October |
Average price | $696 |
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 July 25, 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
PWM - SJU
PWMSJU
Portland
Sat 10/24
6:00 am-2:44 pm
1 stop8h 44m
San Juan Luis Munoz Marin Intl
Sat 11/7
8:05 am-2:33 pm
1 stop7h 28m
$342
Quickest round-trip
PortlandSan Juan
PWM - SJU
PWMSJU
Portland
Tue 10/20
4:15 pm-11:56 pm
1 stop7h 41m
San Juan Luis Munoz Marin Intl
Mon 10/26
7:00 am-1:53 pm
1 stop6h 53m
$342
PortlandSan Juan
PWM - SJU
PWMSJU
Portland
Mon 8/24
6:03 am-8:38 pm
2 stops14h 35m
San Juan Luis Munoz Marin Intl
Fri 8/28
4:55 pm-11:59 pm
1 stop7h 04m
$342
PortlandSan Juan
PWM - SJU
PWMSJU
Portland
Thu 8/20
2:53 pm-11:52 pm
1 stop8h 59m
San Juan Luis Munoz Marin Intl
Thu 8/27
12:56 pm-11:13 pm
1 stop10h 17m
$342
PortlandSan Juan
PWM - SJU
PWMSJU
Portland
Tue 10/20
5:15 am-12:34 pm
1 stop7h 19m
San Juan Luis Munoz Marin Intl
Mon 10/26
7:25 am-11:23 pm
2 stops15h 58m
$342
PortlandSan Juan
PWM - SJU
PWMSJU
Portland
Thu 10/22
6:00 am-4:33 pm
1 stop10h 33m
San Juan Luis Munoz Marin Intl
Mon 10/26
7:00 am-1:53 pm
1 stop6h 53m
$413
PortlandSan Juan
PWM - SJU
PWMSJU
Portland
Sat 9/19
6:06 am-8:38 pm
2 stops14h 32m
San Juan Luis Munoz Marin Intl
Sat 9/26
1:25 pm-11:59 pm
2 stops10h 34m
$428
PortlandSan Juan
PWM - SJU
PWMSJU
Portland
Sat 9/19
5:15 am-12:34 pm
1 stop7h 19m
San Juan Luis Munoz Marin Intl
Wed 9/23
7:00 am-11:32 pm
2 stops16h 32m
$432
Cheapest one-way
PortlandSan Juan
PWM - SJU
PWMSJU
Portland
Fri 10/23
4:15 pm-11:56 pm
1 stop7h 41m
$171
Quickest one-way
PortlandSan Juan
PWM - SJU
PWMSJU
Portland
Fri 12/11
10:00 am-5:20 pm
1 stop6h 20m
$232
Showing 1-10 of 16 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 July.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Portland, Maine-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, Maine-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, Maine-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, Maine-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, Maine-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.
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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, Maine to San Juan Luis Munoz Marin Intl Airport?
The best time to book flights from Portland, Maine to San Juan Luis Munoz Marin Intl Airport is 55 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Portland, Maine to San Juan Luis Munoz Marin Intl Airport?
Currently, October is the cheapest month in which you can book a flight from Portland, Maine to San Juan Luis Munoz Marin Intl Airport (average of $315). Flying from Portland, Maine to San Juan Luis Munoz Marin Intl Airport in April is currently the most expensive (average of $716). 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, Maine to San Juan Luis Munoz Marin Intl Airport?
Airfare is below average for this route at the moment.
Portland, Maine to San Juan Luis Munoz Marin Intl Airport flights typically cost between $532 and $678 in October.The cheapest round-trip price found within the last 5 days was $342 on United Airlines (Oct 20-Oct 26).
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 July 25, 2026.
See what other customers who have flown with Southwest,Delta, andUnited Airlines from Portland to San Juan Luis Munoz Marin Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Food
7.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Food
7.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Food
7.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Food
7.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Food
7.0
Crew
8.6
Entertainment
7.5
Boarding
8.1
Comfort
8.0
Overall
8.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
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
Luquillo
Dorado
Rio Grande
Humacao
Bayamón
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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 July 25, 2026.
Portland and Luis Munoz Marin Intl flights
Browse other Portland and Luis Munoz Marin Intl flight options. Last updated on July 25, 2026.
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Popular flight searches
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Top 5 airlines flying from Portland to Luis Munoz Marin Intl
Discover the top 5 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 July 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$174 | Average$493 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$235 | Average$494 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$256 | Average$577 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$275 | Average$282 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$300 | Average$594 | FlexibilityNo cancel fee | On-time63% |