$119+ Cheap flights from Portland, ME (PWM) to Costa Rica
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 4/8. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — SJO
Mar 17 — Mar 241
1 adult, Economy
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Find cheap flights from Portland to Costa Rica 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
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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 Costa Rica
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Cheapest flights from Portland to Costa RicaExplore the most affordable flight options available from Portland to Costa Rica. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 15, 2026.
Explore the most affordable flight options available from Portland to Costa Rica. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 15, 2026.
This American Airlines deal was found by Cheapflights users on 2/15. 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 4/275:02 pm
PWM
- LIR
2 stops22h 08m
American Airlines
Sat 5/212:30 pm
LIR
- PWM
2 stops19h 24m
American Airlines
Deal found 2/15![American Airlines logo]()
$341
This American Airlines deal was found by Cheapflights users on 2/15. 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.
Thu 2/265:40 pm
PWM
- LIR
2 stops21h 45m
American Airlines
Wed 3/43:29 pm
LIR
- PWM
2 stops19h 30m
American Airlines
Deal found 2/15![American Airlines logo]()
$370
This American Airlines deal was found by Cheapflights users on 2/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/305:40 pm
PWM
- LIR
2 stops21h 38m
American Airlines
Mon 4/62:29 pm
LIR
- PWM
2 stops20h 09m
American Airlines
Deal found 2/12![American Airlines logo]()
$409
This KAYAK deal was found by Cheapflights users on 2/13. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/206:00 am
PWM
- LIR
1 stop7h 55m
JetBlue
Wed 4/221:00 pm
LIR
- PWM
1 stop8h 59m
JetBlue
Deal found 2/13![JetBlue logo]()
$418
This American Airlines deal was found by Cheapflights users on 2/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/209:05 am
PWM
- SJO
1 stop11h 10m
American Airlines
Tue 8/256:00 am
SJO
- PWM
2 stops15h 47m
American Airlines
Deal found 2/12![American Airlines logo]()
$419
This American Airlines deal was found by Cheapflights users on 2/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/316:17 am
PWM
- LIR
1 stop32h 02m
American Airlines
Mon 4/62:29 pm
LIR
- PWM
2 stops20h 09m
American Airlines
Deal found 2/12![American Airlines logo]()
$423
This American Airlines deal was found by Cheapflights users on 2/13. 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 8/219:05 am
PWM
- SJO
1 stop11h 10m
American Airlines
Fri 8/282:15 pm
SJO
- PWM
1 stop24h 47m
American Airlines
Deal found 2/13![American Airlines logo]()
$424
This United Airlines deal was found by Cheapflights users on 2/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/264:15 pm
PWM
- LIR
1 stop21h 40m
United Airlines
Wed 3/48:35 am
LIR
- PWM
2 stops13h 45m
United Airlines
Deal found 2/12![United Airlines logo]()
$435
This KAYAK deal was found by Cheapflights users on 2/14. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/245:51 pm
PWM
- SJO
2 stops21h 31m
GOL
Thu 4/3012:10 pm
SJO
- PWM
2 stops21h 05m
GOL
Deal found 2/14![GOL logo]()
$440
This American Airlines deal was found by Cheapflights users on 2/14. 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 3/216:49 pm
PWM
- LIR
2 stops20h 24m
American Airlines
Tue 3/312:18 pm
LIR
- PWM
2 stops19h 56m
American Airlines
Deal found 2/14![American Airlines logo]()
$441
This JetBlue deal was found by Cheapflights users on 2/12. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/306:00 am
PWM
- LIR
1 stop7h 55m
JetBlue
Tue 4/711:45 am
LIR
- PWM
1 stop10h 02m
JetBlue
Deal found 2/12![JetBlue logo]()
$445
This United Airlines deal was found by Cheapflights users on 2/14. 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 2/175:45 am
PWM
- LIR
2 stops13h 52m
United Airlines
Wed 2/258:35 am
LIR
- PWM
2 stops13h 45m
United Airlines
Deal found 2/14![United Airlines logo]()
$451
Best flights from Portland to Costa RicaDiscover carefully curated flight deals from Portland to Costa Rica that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 15, 2026.
Discover carefully curated flight deals from Portland to Costa Rica that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 15, 2026.
This American Airlines deal was found by Cheapflights users on 2/15. 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.
Thu 2/265:40 pm
PWM
- LIR
2 stops21h 45m
American Airlines
Wed 3/43:29 pm
LIR
- PWM
2 stops19h 30m
American Airlines
Deal found 2/15![American Airlines logo]()
$370
This United Airlines deal was found by Cheapflights users on 2/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/264:15 pm
PWM
- LIR
1 stop21h 40m
United Airlines
Wed 3/48:35 am
LIR
- PWM
2 stops13h 45m
United Airlines
Deal found 2/12![United Airlines logo]()
$435
This JetBlue deal was found by Cheapflights users on 2/12. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/306:00 am
PWM
- LIR
1 stop7h 55m
JetBlue
Tue 4/711:45 am
LIR
- PWM
1 stop10h 02m
JetBlue
Deal found 2/12![JetBlue logo]()
$445
This Orbitz deal was found by Cheapflights users on 2/15. 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.
Wed 5/206:00 am
PWM
- SJO
2 stops28h 30m
Multiple Airlines
Thu 5/217:45 pm
SJO
- PWM
2 stops39h 38m
Multiple Airlines
Deal found 2/15![Multiple Airlines logo]()
$478
This American Airlines deal was found by Cheapflights users on 2/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/316:17 am
PWM
- LIR
2 stops31h 05m
American Airlines
Mon 4/62:29 pm
LIR
- PWM
2 stops20h 09m
American Airlines
Deal found 2/12![American Airlines logo]()
$409
This American Airlines deal was found by Cheapflights users on 2/13. 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 4/215:51 pm
PWM
- LIR
2 stops19h 37m
American Airlines
Tue 4/282:10 pm
LIR
- PWM
2 stops30h 36m
American Airlines
Deal found 2/13![American Airlines logo]()
$409
This United Airlines deal was found by Cheapflights users on 2/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/145:30 am
PWM
- SJO
2 stops16h 07m
United Airlines
Tue 5/197:55 am
SJO
- PWM
2 stops14h 04m
United Airlines
Deal found 2/12![United Airlines logo]()
$459
This Orbitz deal was found by Cheapflights users on 2/12. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/136:00 am
PWM
- SJO
1 stop8h 33m
JetBlue
Mon 8/1712:35 pm
SJO
- PWM
2 stops22h 54m
JetBlue
Deal found 2/12![JetBlue logo]()
$469
This Orbitz deal was found by Cheapflights users on 2/12. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/146:00 am
PWM
- SJO
3 stops31h 45m
Multiple Airlines
Tue 5/1912:40 pm
SJO
- PWM
3 stops32h 56m
Multiple Airlines
Deal found 2/12![Multiple Airlines logo]()
$483
This American Airlines deal was found by Cheapflights users on 2/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/16:17 am
PWM
- LIR
1 stop32h 02m
American Airlines
Mon 4/62:29 pm
LIR
- PWM
2 stops20h 09m
American Airlines
Deal found 2/12![American Airlines logo]()
$423
This KAYAK deal was found by Cheapflights users on 2/13. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/206:00 am
PWM
- SJO
1 stop7h 56m
JetBlue
Wed 4/221:05 pm
SJO
- PWM
1 stop8h 54m
JetBlue
Deal found 2/13![JetBlue logo]()
$480
This United Airlines deal was found by Cheapflights users on 2/13. 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 4/206:13 pm
PWM
- SJO
2 stops17h 58m
United Airlines
Tue 4/281:25 pm
SJO
- PWM
2 stops30h 15m
United Airlines
Deal found 2/13![United Airlines logo]()
$487
This Travelocity deal was found by Cheapflights users on 2/12. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/136:00 am
PWM
- SJO
2 stops28h 30m
Multiple Airlines
Mon 8/1712:40 pm
SJO
- PWM
3 stops22h 49m
Multiple Airlines
Deal found 2/12![Multiple Airlines logo]()
$503
This American Airlines deal was found by Cheapflights users on 2/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/216:49 pm
PWM
- LIR
2 stops20h 24m
American Airlines
Tue 3/312:18 pm
LIR
- PWM
2 stops19h 56m
American Airlines
Deal found 2/12![American Airlines logo]()
$441
This United Airlines deal was found by Cheapflights users on 2/13. 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 4/216:13 pm
PWM
- SJO
2 stops20h 08m
United Airlines
Tue 4/281:25 pm
SJO
- PWM
2 stops30h 15m
United Airlines
Deal found 2/13![United Airlines logo]()
$487
This United Airlines deal was found by Cheapflights users on 2/13. 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
- LIR
2 stops30h 00m
United Airlines
Sat 7/43:27 pm
LIR
- PWM
2 stops28h 31m
United Airlines
Deal found 2/13![United Airlines logo]()
$497
This American Airlines deal was found by Cheapflights users on 2/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/117:23 pm
PWM
- SJO
2 stops17h 44m
American Airlines
Sat 4/182:22 pm
SJO
- PWM
2 stops18h 53m
American Airlines
Deal found 2/12![American Airlines logo]()
$504
This United Airlines deal was found by Cheapflights users on 2/13. 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 4/156:13 pm
PWM
- SJO
2 stops20h 08m
United Airlines
Tue 4/281:25 pm
SJO
- PWM
2 stops30h 15m
United Airlines
Deal found 2/13![United Airlines logo]()
$515
This American Airlines deal was found by Cheapflights users on 2/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/139:05 am
PWM
- SJO
1 stop11h 10m
American Airlines
Mon 8/172:15 pm
SJO
- PWM
1 stop21h 36m
American Airlines
Deal found 2/12![American Airlines logo]()
$523
Last-minute flights from Portland to Costa RicaDiscover last-minute flight deals from Portland to Costa Rica. Data last updated February 15, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Costa Rica. Data last updated February 15, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 2/14. 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 2/175:45 am
PWM
- LIR
2 stops13h 52m
United Airlines
Wed 2/258:35 am
LIR
- PWM
2 stops13h 45m
United Airlines
Deal found 2/14![United Airlines logo]()
$451
This Faresmojo deal was found by Cheapflights users on 2/15. 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 Faresmojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/185:31 am
PWM
- SJO
1 stop8h 29m
JetBlue
Sun 2/227:00 am
SJO
- PWM
1 stop15h 06m
JetBlue
Deal found 2/15![JetBlue logo]()
$458
This BusinessClass deal was found by Cheapflights users on 2/15. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/216:00 am
PWM
- SJO
2 stops15h 39m
Multiple Airlines
Sat 2/282:20 pm
SJO
- PWM
2 stops23h 54m
Multiple Airlines
Deal found 2/15![Multiple Airlines logo]()
$486
This United Airlines deal was found by Cheapflights users on 2/15. 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 2/216:00 am
PWM
- SJO
2 stops15h 39m
United Airlines
Sat 2/288:45 am
SJO
- PWM
2 stops13h 35m
United Airlines
Deal found 2/15![United Airlines logo]()
$502
This American Airlines deal was found by Cheapflights users on 2/15. 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.
Thu 2/265:40 pm
PWM
- LIR
2 stops21h 45m
American Airlines
Wed 3/43:29 pm
LIR
- PWM
2 stops19h 30m
American Airlines
Deal found 2/15![American Airlines logo]()
$370
This United Airlines deal was found by Cheapflights users on 2/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/264:15 pm
PWM
- LIR
1 stop21h 40m
United Airlines
Wed 3/48:35 am
LIR
- PWM
2 stops13h 45m
United Airlines
Deal found 2/12![United Airlines logo]()
$435
This American Airlines deal was found by Cheapflights users on 2/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/216:49 pm
PWM
- LIR
2 stops20h 24m
American Airlines
Tue 3/312:18 pm
LIR
- PWM
2 stops19h 56m
American Airlines
Deal found 2/12![American Airlines logo]()
$441
This Southwest deal was found by Cheapflights users on 2/14. 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 3/255:30 am
PWM
- SJO
2 stops16h 10m
Southwest
Tue 3/318:45 am
SJO
- PWM
2 stops12h 20m
Southwest
Deal found 2/14![Southwest logo]()
$570
This American Airlines deal was found by Cheapflights users on 2/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/305:40 pm
PWM
- LIR
2 stops21h 38m
American Airlines
Mon 4/62:29 pm
LIR
- PWM
2 stops20h 09m
American Airlines
Deal found 2/12![American Airlines logo]()
$409
This JetBlue deal was found by Cheapflights users on 2/12. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/306:00 am
PWM
- LIR
1 stop7h 55m
JetBlue
Tue 4/711:45 am
LIR
- PWM
1 stop10h 02m
JetBlue
Deal found 2/12![JetBlue logo]()
$445
This American Airlines deal was found by Cheapflights users on 2/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/316:17 am
PWM
- LIR
1 stop32h 02m
American Airlines
Mon 4/62:29 pm
LIR
- PWM
2 stops20h 09m
American Airlines
Deal found 2/12![American Airlines logo]()
$423
This American Airlines deal was found by Cheapflights users on 2/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/315:40 pm
PWM
- LIR
2 stops21h 38m
American Airlines
Tue 4/72:40 pm
LIR
- PWM
2 stops18h 35m
American Airlines
Deal found 2/12![American Airlines logo]()
$486
One-way flights from Portland to Costa RicaSearch for one-way flight options from Portland to Costa Rica. Find affordable one-way fares based on user searches. Data last updated February 15, 2026.
Search for one-way flight options from Portland to Costa Rica. Find affordable one-way fares based on user searches. Data last updated February 15, 2026.
This American Airlines deal was found by Cheapflights users on 2/13. 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 4/87:07 am
PWM
- SJO
2 stops14h 00m
American Airlines
Deal found 2/13![American Airlines logo]()
$119
This BusinessClass deal was found by Cheapflights users on 2/13. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/245:23 am
PWM
- SJO
1 stop17h 52m
LATAM Airlines
Deal found 2/13![LATAM Airlines logo]()
$143
This American Airlines deal was found by Cheapflights users on 2/13. 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 3/186:29 pm
PWM
- LIR
2 stops20h 44m
American Airlines
Deal found 2/13![American Airlines logo]()
$158
This American Airlines deal was found by Cheapflights users on 2/13. 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 4/15:40 pm
PWM
- LIR
1 stop20h 39m
American Airlines
Deal found 2/13![American Airlines logo]()
$170
This United Airlines deal was found by Cheapflights users on 2/13. 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 4/186:13 pm
PWM
- SJO
2 stops17h 58m
United Airlines
Deal found 2/13![United Airlines logo]()
$174
This United Airlines deal was found by Cheapflights users on 2/13. 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 4/146:04 am
PWM
- SJO
2 stops30h 07m
United Airlines
Deal found 2/13![United Airlines logo]()
$179
This Delta deal was found by Cheapflights users on 2/15. 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 4/85:23 am
PWM
- SJO
1 stop8h 32m
Delta
Deal found 2/15![Delta logo]()
$186
This KAYAK deal was found by Cheapflights users on 2/15. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/116:01 pm
PWM
- SJO
2 stops19h 24m
GOL
Deal found 2/15![GOL logo]()
$200
This United Airlines deal was found by Cheapflights users on 2/13. 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 3/254:23 pm
PWM
- LIR
2 stops20h 01m
United Airlines
Deal found 2/13![United Airlines logo]()
$207
This American Airlines deal was found by Cheapflights users on 2/13. 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 4/141:18 pm
PWM
- SJO
1 stop24h 07m
American Airlines
Deal found 2/13![American Airlines logo]()
$211
This Priceline deal was found by Cheapflights users on 2/15. 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 5/156:00 am
PWM
- SJO
1 stop18h 14m
JetBlue
Deal found 2/15![JetBlue logo]()
$221
This Orbitz deal was found by Cheapflights users on 2/15. 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.
Fri 5/156:00 am
PWM
- SJO
3 stops31h 45m
Multiple Airlines
Deal found 2/15![Multiple Airlines logo]()
$228
Find flight deals from Portland to Costa Rica
Keep the following information in mind while searching for Portland to Costa Rica flight deals. Data was last updated February 15, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $341 (American Airlines) |
One-way from | $119 (American Airlines) |
Popular in | December |
Cheapest in | July |
Average price | $698 |
Cheapflights Fare Finder
Customize your flight search to find flights from Portland to Costa Rica 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 February 15, 2026.
Use the filters below to find and compare flights from Portland to Costa Rica that are best for you.
Fly from
Portland
Fly to
Costa Rica
Route
Depart
Return
Price
PortlandLiberia
PWM - LIR
PWMLIR
Portland
Thu 2/26
5:40 pm-2:25 pm
2 stops21h 45m
Liberia
Wed 3/4
3:29 pm-11:59 am
2 stops19h 30m
$370
PortlandLiberia
PWM - LIR
PWMLIR
Portland
Tue 3/31
6:17 am-11:22 am
2 stops31h 05m
Liberia
Mon 4/6
2:29 pm-12:38 pm
2 stops20h 09m
$409
PortlandLiberia
PWM - LIR
PWMLIR
Portland
Tue 4/21
5:51 pm-11:28 am
2 stops19h 37m
Liberia
Tue 4/28
2:10 pm-10:46 pm
2 stops30h 36m
$409
PortlandLiberia
PWM - LIR
PWMLIR
Portland
Wed 4/1
6:17 am-12:19 pm
1 stop32h 02m
Liberia
Mon 4/6
2:29 pm-12:38 pm
2 stops20h 09m
$423
PortlandLiberia
PWM - LIR
PWMLIR
Portland
Thu 2/26
4:15 pm-12:55 pm
1 stop21h 40m
Liberia
Wed 3/4
8:35 am-11:20 pm
2 stops13h 45m
$435
PortlandLiberia
PWM - LIR
PWMLIR
Portland
Sat 3/21
6:49 pm-1:13 pm
2 stops20h 24m
Liberia
Tue 3/31
2:18 pm-12:14 pm
2 stops19h 56m
$441
PortlandLiberia
PWM - LIR
PWMLIR
Portland
Mon 3/30
6:00 am-11:55 am
1 stop7h 55m
Liberia
Tue 4/7
11:45 am-11:47 pm
1 stop10h 02m
$445
PortlandSan José
PWM - SJO
PWMSJO
Portland
Thu 5/14
5:30 am-7:37 pm
2 stops16h 07m
San José Juan Santamaria Intl
Tue 5/19
7:55 am-11:59 pm
2 stops14h 04m
$459
PortlandSan José
PWM - SJO
PWMSJO
Portland
Thu 8/13
6:00 am-12:33 pm
1 stop8h 33m
San José Juan Santamaria Intl
Mon 8/17
12:35 pm-1:29 pm
2 stops22h 54m
$469
PortlandSan José
PWM - SJO
PWMSJO
Portland
Wed 5/20
6:00 am-8:30 am
2 stops28h 30m
San José Juan Santamaria Intl
Thu 5/21
7:45 pm-1:23 pm
2 stops39h 38m
$478
Showing 1-10 of 28 results
Best time to book a flight from Portland to Costa Rica
Have a flexible travel schedule? Discover the best time to fly to Costa Rica from Portland with our price prediction graph.
PWM-SJO
PWM-LIR
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 Costa Rica
PWM-CR0
PWM-SJO
PWM-LIR
What is the cheapest month to book a flight from Portland, Maine to Costa Rica?
Currently, July is the cheapest month in which you can book a flight from Portland, Maine to Costa Rica (average of $147). Flying from Portland, Maine to Costa Rica in August is currently the most expensive (average of $299). 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 Costa Rica
Get insights into the airlines that provide service to Costa Rica. 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 Costa Rica. Reviews last updated February 15, 2026.
See what other customers who have flown with Southwest, Delta, and United Airlines from Portland to Costa Rica 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
Crew
8.6
Overall
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Crew
8.6
Overall
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Crew
8.6
Overall
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Crew
8.6
Overall
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Crew
8.6
Overall
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Crew
8.6
Overall
8.0
Boarding
8.1
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Related info for your journey
Find useful and relevant information for your journey from Portland to Costa Rica. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Portland to Costa Rica
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Costa Rica by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Portland to Costa Rica by cabin class
Find flights from Portland to Costa Rica, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Portland and Costa Rica flights
Browse other Portland and Costa Rica flight options. Last updated on February 15, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 5 airlines flying from Portland to Costa Rica
Discover the top 5 airlines that operate flights from Portland to Costa Rica. 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 February 15, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$199 | Average$236 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$274 | Average$559 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$299 | Average$657 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$468 | Average$725 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$577 | Average$798 | FlexibilityNo cancel fee | On-time63% |