$218+ Cheap flights from Portland, ME (PWM) to Luis Munoz Marin Intl (SJU)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/16. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — SJU
Jul 26 — Aug 21
Round-trip
1 adult, Economy
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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
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Last-minute
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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 June 26, 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 June 26, 2026.
This United Airlines deal was found by Cheapflights users on 6/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/166:00 am
PWM
- SJU
2 stops14h 38m
United Airlines
Wed 9/234:20 pm
SJU
- PWM
1 stop7h 12m
United Airlines
Deal found 6/24![United Airlines logo]()
$218
This American Airlines deal was found by Cheapflights users on 6/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/165:42 pm
PWM
- SJU
2 stops20h 12m
American Airlines
Wed 9/236:27 am
SJU
- PWM
2 stops17h 32m
American Airlines
Deal found 6/24![American Airlines logo]()
$223
This United Airlines deal was found by Cheapflights users on 6/26. 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 10/226:00 am
PWM
- SJU
1 stop7h 45m
United Airlines
Mon 10/264:50 pm
SJU
- PWM
1 stop7h 09m
United Airlines
Deal found 6/26![United Airlines logo]()
$238
This United Airlines deal was found by Cheapflights users on 6/23. 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 10/206:00 am
PWM
- SJU
1 stop7h 45m
United Airlines
Mon 10/267:25 am
SJU
- PWM
2 stops11h 53m
United Airlines
Deal found 6/23![United Airlines logo]()
$270
This Delta deal was found by Cheapflights users on 6/26. 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 10/202:35 pm
PWM
- SJU
1 stop9h 21m
Delta
Mon 10/267:00 am
SJU
- PWM
1 stop6h 53m
Delta
Deal found 6/26![Delta logo]()
$276
This United Airlines deal was found by Cheapflights users on 6/23. 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.
Wed 10/215:15 am
PWM
- SJU
1 stop7h 19m
United Airlines
Sat 10/241:05 am
SJU
- PWM
1 stop8h 00m
United Airlines
Deal found 6/23![United Airlines logo]()
$294
This American Airlines deal was found by Cheapflights users on 6/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/195:06 pm
PWM
- SJU
2 stops17h 54m
American Airlines
Sat 9/266:27 am
SJU
- PWM
2 stops16h 18m
American Airlines
Deal found 6/24![American Airlines logo]()
$295
This American Airlines deal was found by Cheapflights users on 6/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/216:00 am
PWM
- SJU
2 stops12h 05m
American Airlines
Wed 10/282:25 pm
SJU
- PWM
1 stop9h 26m
American Airlines
Deal found 6/24![American Airlines logo]()
$300
This Delta deal was found by Cheapflights users on 6/21. 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 9/214:20 pm
PWM
- SJU
1 stop7h 28m
Delta
Fri 9/251:16 pm
SJU
- PWM
1 stop10h 40m
Delta
Deal found 6/21![Delta logo]()
$306
This United Airlines deal was found by Cheapflights users on 6/22. 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 8/296:03 am
PWM
- SJU
1 stop8h 41m
United Airlines
Wed 9/24:55 pm
SJU
- PWM
1 stop7h 04m
United Airlines
Deal found 6/22![United Airlines logo]()
$308
This United Airlines deal was found by Cheapflights users on 6/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/296:00 am
PWM
- SJU
1 stop6h 41m
United Airlines
Sat 10/312:05 am
SJU
- PWM
2 stops13h 15m
United Airlines
Deal found 6/24![United Airlines logo]()
$312
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 June 26, 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 June 26, 2026.
This United Airlines deal was found by Cheapflights users on 6/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/166:00 am
PWM
- SJU
2 stops14h 38m
United Airlines
Wed 9/234:20 pm
SJU
- PWM
1 stop7h 12m
United Airlines
Deal found 6/24![United Airlines logo]()
$218
This Delta deal was found by Cheapflights users on 6/23. 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.
Mon 9/214:20 pm
PWM
- SJU
1 stop7h 28m
Delta
Fri 9/251:16 pm
SJU
- PWM
1 stop10h 40m
Delta
Deal found 6/23![Delta logo]()
$276
This United Airlines deal was found by Cheapflights users on 6/23. 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 10/206:00 am
PWM
- SJU
1 stop7h 45m
United Airlines
Mon 10/264:50 pm
SJU
- PWM
1 stop7h 09m
United Airlines
Deal found 6/23![United Airlines logo]()
$218
This Delta deal was found by Cheapflights users on 6/26. 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 10/202:35 pm
PWM
- SJU
1 stop9h 21m
Delta
Mon 10/267:00 am
SJU
- PWM
1 stop6h 53m
Delta
Deal found 6/26![Delta logo]()
$276
This Delta deal was found by Cheapflights users on 6/25. 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.
Sat 9/196:00 am
PWM
- SJU
1 stop10h 49m
Delta
Sat 9/261:21 pm
SJU
- PWM
1 stop10h 35m
Delta
Deal found 6/25![Delta logo]()
$276
Last-minute flights from Portland to Luis Munoz Marin IntlDiscover last-minute flight deals from Portland to Luis Munoz Marin Intl. Data last updated June 26, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Luis Munoz Marin Intl. Data last updated June 26, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 6/22. 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 6/276:00 am
PWM
- SJU
2 stops15h 24m
United Airlines
Mon 7/61:00 am
SJU
- PWM
1 stop8h 11m
United Airlines
Deal found 6/22![United Airlines logo]()
$475
This United Airlines deal was found by Cheapflights users on 6/22. 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.
Mon 6/295:00 pm
PWM
- SJU
2 stops12h 29m
United Airlines
Fri 7/31:00 am
SJU
- PWM
1 stop8h 23m
United Airlines
Deal found 6/22![United Airlines logo]()
$487
This Delta deal was found by Cheapflights users on 6/22. 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.
Mon 6/296:00 am
PWM
- SJU
1 stop7h 31m
Delta
Sat 7/45:45 pm
SJU
- PWM
1 stop7h 07m
Delta
Deal found 6/22![Delta logo]()
$514
This American Airlines deal was found by Cheapflights users on 6/23. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/13:05 pm
PWM
- SJU
1 stop7h 55m
American Airlines
Wed 7/87:00 am
SJU
- PWM
1 stop15h 33m
American Airlines
Deal found 6/23![American Airlines logo]()
$455
This United Airlines deal was found by Cheapflights users on 6/23. 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.
Wed 7/16:00 am
PWM
- SJU
2 stops14h 38m
United Airlines
Tue 7/71:00 am
SJU
- PWM
1 stop8h 11m
United Airlines
Deal found 6/23![United Airlines logo]()
$474
This United Airlines deal was found by Cheapflights users on 6/23. 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.
Wed 7/16:00 am
PWM
- SJU
2 stops14h 38m
United Airlines
Sun 7/51:00 am
SJU
- PWM
1 stop8h 11m
United Airlines
Deal found 6/23![United Airlines logo]()
$476
This American Airlines deal was found by Cheapflights users on 6/23. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/13:05 pm
PWM
- SJU
1 stop7h 55m
American Airlines
Sat 7/410:35 am
SJU
- PWM
2 stops9h 30m
American Airlines
Deal found 6/23![American Airlines logo]()
$515
This United Airlines deal was found by Cheapflights users on 6/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/16:00 am
PWM
- SJU
2 stops14h 38m
United Airlines
Wed 7/291:25 pm
SJU
- PWM
2 stops10h 26m
United Airlines
Deal found 6/24![United Airlines logo]()
$522
This JetBlue deal was found by Cheapflights users on 6/23. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/211:25 pm
PWM
- SJU
1 stop8h 15m
JetBlue
Sat 7/255:01 am
SJU
- PWM
1 stop8h 44m
JetBlue
Deal found 6/23![JetBlue logo]()
$460
This Priceline deal was found by Cheapflights users on 6/21. 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.
Fri 7/316:00 am
PWM
- SJU
1 stop18h 13m
JetBlue
Mon 8/35:01 am
SJU
- PWM
1 stop7h 29m
JetBlue
Deal found 6/21![JetBlue logo]()
$441
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 June 26, 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 June 26, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/22. 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.
Fri 7/247:00 am
PWM
- SJU
3 stops41h 41m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$250
This Kiwi.com deal was found by Cheapflights users on 6/22. 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.
Tue 7/284:44 pm
PWM
- SJU
3 stops45h 16m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$254
This American Airlines deal was found by Cheapflights users on 6/26. 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.
Sun 11/225:41 am
PWM
- SJU
2 stops14h 51m
American Airlines
Deal found 6/26![American Airlines logo]()
$261
This Kiwi.com deal was found by Cheapflights users on 6/22. 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 7/277:00 am
PWM
- SJU
3 stops41h 41m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$267
This Kiwi.com deal was found by Cheapflights users on 6/22. 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.
Thu 7/308:22 pm
PWM
- SJU
3 stops52h 19m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$270
This Delta deal was found by Cheapflights users on 6/26. 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 11/226:00 am
PWM
- SJU
1 stop10h 25m
Delta
Deal found 6/26![Delta logo]()
$281
This JetBlue deal was found by Cheapflights users on 6/22. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/242:40 pm
PWM
- SJU
1 stop8h 05m
JetBlue
Deal found 6/22![JetBlue logo]()
$283
This Kiwi.com deal was found by Cheapflights users on 6/22. 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.
Sun 7/267:00 am
PWM
- SJU
2 stops31h 00m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$284
This Kiwi.com deal was found by Cheapflights users on 6/22. 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.
Wed 7/297:00 am
PWM
- SJU
2 stops41h 41m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$295
This United Airlines deal was found by Cheapflights users on 6/22. 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.
Tue 7/285:15 am
PWM
- SJU
1 stop7h 19m
United Airlines
Deal found 6/22![United Airlines logo]()
$306
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 June 26, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $218 (United Airlines) |
Popular in | April |
Cheapest in | October |
Average price | $674 |
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 June 26, 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
Wed 9/16
6:00 am-8:38 pm
2 stops14h 38m
San Juan Luis Munoz Marin Intl
Wed 9/23
4:20 pm-11:32 pm
1 stop7h 12m
$218
Quickest round-trip
PortlandSan Juan
PWM - SJU
PWMSJU
Portland
Tue 10/20
6:00 am-1:45 pm
1 stop7h 45m
San Juan Luis Munoz Marin Intl
Mon 10/26
4:50 pm-11:59 pm
1 stop7h 09m
$218
PortlandSan Juan
PWM - SJU
PWMSJU
Portland
Mon 9/21
4:20 pm-11:48 pm
1 stop7h 28m
San Juan Luis Munoz Marin Intl
Fri 9/25
1:16 pm-11:56 pm
1 stop10h 40m
$276
PortlandSan Juan
PWM - SJU
PWMSJU
Portland
Tue 10/20
2:35 pm-11:56 pm
1 stop9h 21m
San Juan Luis Munoz Marin Intl
Mon 10/26
7:00 am-1:53 pm
1 stop6h 53m
$276
PortlandSan Juan
PWM - SJU
PWMSJU
Portland
Sat 9/19
6:00 am-4:49 pm
1 stop10h 49m
San Juan Luis Munoz Marin Intl
Sat 9/26
1:21 pm-11:56 pm
1 stop10h 35m
$276
Cheapest one-way
PortlandSan Juan
PWM - SJU
PWMSJU
Portland
Fri 7/24
7:00 am-12:41 am
3 stops41h 41m
$250
PortlandSan Juan
PWM - SJU
PWMSJU
Portland
Sun 11/22
5:41 am-9:32 pm
2 stops14h 51m
$261
PortlandSan Juan
PWM - SJU
PWMSJU
Portland
Sun 11/22
6:00 am-5:25 pm
1 stop10h 25m
$281
Quickest one-way
PortlandSan Juan
PWM - SJU
PWMSJU
Portland
Sun 7/26
5:15 am-12:34 pm
1 stop7h 19m
$307
PortlandSan Juan
PWM - SJU
PWMSJU
Portland
Mon 7/27
7:00 am-7:42 pm
2 stops36h 42m
$310
Showing 1-10 of 17 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 June.
| 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.
PWM-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, 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 26 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.
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 June 26, 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.
Comfort
8.0
Entertainment
7.5
Food
7.0
Overall
7.9
Crew
8.6
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Comfort
8.0
Entertainment
7.5
Food
7.0
Overall
7.9
Crew
8.6
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Comfort
8.0
Entertainment
7.5
Food
7.0
Overall
7.9
Crew
8.6
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Comfort
8.0
Entertainment
7.5
Food
7.0
Overall
7.9
Crew
8.6
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Comfort
8.0
Entertainment
7.5
Food
7.0
Overall
7.9
Crew
8.6
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Comfort
8.0
Entertainment
7.5
Food
7.0
Overall
7.9
Crew
8.6
Boarding
8.1
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
Rio Grande
Dorado
Humacao
Bayamón
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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 June 26, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$174 | Average$430 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$176 | Average$276 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$235 | Average$491 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$256 | Average$581 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$300 | Average$565 | FlexibilityNo cancel fee | On-time63% |