$178+ Cheap flights from Portland (PDX) 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 5/30. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SJO
May 31 — Jun 71
Round-trip
1 adult, Economy
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Find cheap flights from Portland to Costa Rica with Cheapflights
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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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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 May 1, 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 May 1, 2026.
This eDestinos deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/267:15 am
PDX
- SJO
1 stop15h 00m
Multiple Airlines
Tue 6/25:45 am
SJO
- PDX
1 stop32h 46m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$366
This Avianca deal was found by Cheapflights users on 4/28. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/247:00 am
PDX
- SJO
2 stops15h 15m
Multiple Airlines
Thu 10/15:45 am
SJO
- PDX
2 stops17h 10m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$376
This Avianca deal was found by Cheapflights users on 4/30. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/287:50 pm
PDX
- SJO
2 stops11h 55m
Multiple Airlines
Thu 10/15:45 am
SJO
- PDX
2 stops17h 10m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$378
This Avianca deal was found by Cheapflights users on 4/28. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/66:00 pm
PDX
- SJO
2 stops12h 40m
Multiple Airlines
Fri 11/135:00 am
SJO
- PDX
2 stops13h 27m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$379
This Avianca deal was found by Cheapflights users on 4/30. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/197:00 am
PDX
- SJO
2 stops15h 15m
Multiple Airlines
Sat 9/265:45 am
SJO
- PDX
2 stops17h 10m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$384
This Avianca deal was found by Cheapflights users on 4/27. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/287:10 am
PDX
- SJO
2 stops15h 05m
Multiple Airlines
Tue 5/55:45 am
SJO
- PDX
2 stops15h 50m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$393
This Avianca deal was found by Cheapflights users on 4/29. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/27:50 pm
PDX
- SJO
2 stops11h 55m
Multiple Airlines
Thu 9/105:45 am
SJO
- PDX
2 stops17h 10m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$395
This United Airlines deal was found by Cheapflights users on 4/29. 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 5/117:45 pm
PDX
- SJO
1 stop10h 30m
United Airlines
Fri 5/158:45 am
SJO
- PDX
1 stop13h 13m
United Airlines
Deal found 4/29![United Airlines logo]()
$398
This United Airlines deal was found by Cheapflights users on 4/29. 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 5/65:20 am
PDX
- SJO
2 stops13h 17m
United Airlines
Tue 5/128:45 am
SJO
- PDX
1 stop13h 13m
United Airlines
Deal found 4/29![United Airlines logo]()
$403
This United Airlines deal was found by Cheapflights users on 4/27. 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.
Sun 11/17:10 am
PDX
- LIR
1 stop9h 27m
United Airlines
Thu 11/198:35 am
LIR
- PDX
1 stop16h 36m
United Airlines
Deal found 4/27![United Airlines logo]()
$436
This United Airlines deal was found by Cheapflights users on 4/30. 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.
Sun 10/256:59 pm
PDX
- LIR
2 stops16h 11m
United Airlines
Sat 10/311:20 pm
LIR
- PDX
1 stop10h 51m
United Airlines
Deal found 4/30![United Airlines logo]()
$450
This United Airlines deal was found by Cheapflights users on 4/30. 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 11/25:15 am
PDX
- LIR
1 stop8h 53m
United Airlines
Mon 11/98:35 am
LIR
- PDX
2 stops16h 03m
United Airlines
Deal found 4/30![United Airlines logo]()
$455
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 May 1, 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 May 1, 2026.
This United Airlines deal was found by Cheapflights users on 4/27. 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 5/1111:59 pm
PDX
- SJO
1 stop11h 22m
United Airlines
Mon 5/187:55 am
SJO
- PDX
1 stop12h 43m
United Airlines
Deal found 4/27![United Airlines logo]()
$398
This Alaska Airlines deal was found by Cheapflights users on 4/27. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/89:27 pm
PDX
- LIR
1 stop32h 10m
Alaska Airlines
Mon 8/176:39 pm
LIR
- PDX
1 stop20h 05m
Alaska Airlines
Deal found 4/27![Alaska Airlines logo]()
$522
This United Airlines deal was found by Cheapflights users on 4/30. 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 9/244:07 pm
PDX
- LIR
2 stops19h 03m
United Airlines
Fri 10/21:20 pm
LIR
- PDX
1 stop10h 29m
United Airlines
Deal found 4/30![United Airlines logo]()
$450
This United Airlines deal was found by Cheapflights users on 4/30. 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 9/287:15 pm
PDX
- SJO
2 stops16h 06m
United Airlines
Thu 10/17:55 am
SJO
- PDX
1 stop15h 54m
United Airlines
Deal found 4/30![United Airlines logo]()
$523
This United Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/167:45 pm
PDX
- SJO
1 stop10h 30m
United Airlines
Sun 5/246:00 am
SJO
- PDX
2 stops19h 50m
United Airlines
Deal found 4/27![United Airlines logo]()
$523
This United Airlines deal was found by Cheapflights users on 4/29. 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 7/412:50 pm
PDX
- SJO
2 stops20h 21m
United Airlines
Wed 7/158:45 am
SJO
- PDX
1 stop17h 05m
United Airlines
Deal found 4/29![United Airlines logo]()
$554
This United Airlines deal was found by Cheapflights users on 4/30. 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.
Sun 5/244:15 pm
PDX
- LIR
2 stops18h 55m
United Airlines
Sun 5/318:30 am
LIR
- PDX
1 stop17h 20m
United Airlines
Deal found 4/30![United Airlines logo]()
$575
This United Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/237:00 am
PDX
- LIR
1 stop10h 19m
United Airlines
Sun 5/318:30 am
LIR
- PDX
1 stop15h 33m
United Airlines
Deal found 4/27![United Airlines logo]()
$584
This United Airlines deal was found by Cheapflights users on 4/27. 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 6/85:15 am
PDX
- LIR
3 stops27h 35m
United Airlines
Wed 7/1511:10 am
LIR
- PDX
2 stops24h 10m
United Airlines
Deal found 4/27![United Airlines logo]()
$625
Last-minute flights from Portland to Costa RicaDiscover last-minute flight deals from Portland to Costa Rica. Data last updated May 1, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Costa Rica. Data last updated May 1, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 4/29. 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 5/65:20 am
PDX
- SJO
2 stops13h 17m
United Airlines
Tue 5/128:45 am
SJO
- PDX
1 stop13h 13m
United Airlines
Deal found 4/29![United Airlines logo]()
$403
This United Airlines deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/95:00 am
PDX
- LIR
1 stop9h 19m
United Airlines
Sat 5/1611:49 am
LIR
- PDX
1 stop10h 20m
United Airlines
Deal found 4/30![United Airlines logo]()
$524
This United Airlines deal was found by Cheapflights users on 4/29. 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 5/117:45 pm
PDX
- SJO
1 stop10h 30m
United Airlines
Fri 5/158:45 am
SJO
- PDX
1 stop13h 13m
United Airlines
Deal found 4/29![United Airlines logo]()
$398
This FlightHub deal was found by Cheapflights users on 4/30. 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.
Thu 5/1410:30 am
PDX
- SJO
2 stops11h 45m
Multiple Airlines
Thu 5/215:45 am
SJO
- PDX
2 stops15h 50m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$414
This American Airlines deal was found by Cheapflights users on 4/30. 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 5/1510:28 pm
PDX
- LIR
1 stop13h 42m
American Airlines
Thu 5/212:45 pm
LIR
- PDX
2 stops20h 12m
American Airlines
Deal found 4/30![American Airlines logo]()
$569
This Avianca deal was found by Cheapflights users on 4/29. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/1610:30 am
PDX
- SJO
2 stops11h 45m
Multiple Airlines
Sat 5/235:45 am
SJO
- PDX
2 stops17h 30m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$408
This FlightHub deal was found by Cheapflights users on 4/27. 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 5/229:26 pm
PDX
- SJO
2 stops24h 49m
Multiple Airlines
Sat 5/305:45 am
SJO
- PDX
2 stops17h 30m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$416
This United Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/2311:59 pm
PDX
- LIR
1 stop8h 51m
United Airlines
Sun 5/318:30 am
LIR
- PDX
1 stop17h 20m
United Airlines
Deal found 4/28![United Airlines logo]()
$584
This United Airlines deal was found by Cheapflights users on 4/28. 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.
Sun 5/245:00 am
PDX
- LIR
1 stop9h 19m
United Airlines
Sun 5/318:30 am
LIR
- PDX
1 stop15h 33m
United Airlines
Deal found 4/28![United Airlines logo]()
$486
This eDestinos deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/267:15 am
PDX
- SJO
1 stop15h 00m
Multiple Airlines
Tue 6/25:45 am
SJO
- PDX
1 stop32h 46m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$366
This Alaska Airlines deal was found by Cheapflights users on 4/27. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2812:53 pm
PDX
- SJO
1 stop9h 40m
Alaska Airlines
Fri 6/512:53 am
SJO
- PDX
1 stop13h 38m
Alaska Airlines
Deal found 4/27![Alaska Airlines logo]()
$429
This American Airlines deal was found by Cheapflights users on 4/27. 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 6/75:10 am
PDX
- SJO
1 stop16h 33m
American Airlines
Sun 6/1411:59 pm
SJO
- PDX
1 stop23h 52m
American Airlines
Deal found 4/27![American Airlines logo]()
$413
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 May 1, 2026.
Search for one-way flight options from Portland to Costa Rica. Find affordable one-way fares based on user searches. Data last updated May 1, 2026.
This United Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/307:13 am
PDX
- SJO
1 stop11h 24m
United Airlines
Deal found 4/28![United Airlines logo]()
$178
This Avianca deal was found by Cheapflights users on 4/28. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/210:30 am
PDX
- SJO
2 stops11h 45m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$179
This American Airlines deal was found by Cheapflights users on 4/29. 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 5/67:23 am
PDX
- SJO
2 stops13h 13m
American Airlines
Deal found 4/29![American Airlines logo]()
$188
This FlightHub deal was found by Cheapflights users on 4/28. 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 10/2110:30 am
PDX
- SJO
2 stops11h 45m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$191
This United Airlines deal was found by Cheapflights users on 4/28. 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 10/2812:51 pm
PDX
- SJO
1 stop20h 34m
United Airlines
Deal found 4/28![United Airlines logo]()
$193
This FlightHub deal was found by Cheapflights users on 4/28. 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.
Tue 6/97:15 am
PDX
- SJO
2 stops15h 00m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$194
This United Airlines deal was found by Cheapflights users on 4/30. 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 8/177:13 pm
PDX
- LIR
2 stops15h 57m
United Airlines
Deal found 4/30![United Airlines logo]()
$202
This American Airlines deal was found by Cheapflights users on 4/27. 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 7/1912:45 am
PDX
- LIR
1 stop12h 55m
American Airlines
Deal found 4/27![American Airlines logo]()
$204
This FlightHub deal was found by Cheapflights users on 4/30. 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.
Mon 6/112:53 pm
PDX
- SJO
2 stops33h 22m
Multiple Airlines
Deal found 4/30![Multiple Airlines logo]()
$208
This Alaska Airlines deal was found by Cheapflights users on 4/28. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2812:53 pm
PDX
- SJO
1 stop9h 40m
Alaska Airlines
Deal found 4/28![Alaska Airlines logo]()
$209
This Avianca deal was found by Cheapflights users on 4/28. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/3010:30 am
PDX
- SJO
2 stops11h 45m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$214
This Orbitz deal was found by Cheapflights users on 4/29. 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 5/2710:30 am
PDX
- SJO
2 stops24h 00m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$216
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 May 1, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $366 (eDestinos) |
One-way from | $178 (United Airlines) |
Popular in | June |
Cheapest in | September |
Average price | $469 |
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 May 1, 2026.
Use the filters below to find and compare flights from Portland to Costa Rica that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
PortlandSan José
PDX - SJO
PDXSJO
Portland
Mon 5/11
11:59 pm-12:21 pm
1 stop11h 22m
San José Juan Santamaria Intl
Mon 5/18
7:55 am-7:38 pm
1 stop12h 43m
$398
PortlandLiberia
PDX - LIR
PDXLIR
Portland
Thu 9/24
4:07 pm-12:10 pm
2 stops19h 03m
Liberia
Fri 10/2
1:20 pm-10:49 pm
1 stop10h 29m
$450
PortlandLiberia
PDX - LIR
PDXLIR
Portland
Sat 8/8
9:27 pm-6:37 am
1 stop32h 10m
Liberia
Mon 8/17
6:39 pm-1:44 pm
1 stop20h 05m
$522
PortlandSan José
PDX - SJO
PDXSJO
Portland
Mon 9/28
7:15 pm-12:21 pm
2 stops16h 06m
San José Juan Santamaria Intl
Thu 10/1
7:55 am-10:49 pm
1 stop15h 54m
$523
PortlandSan José
PDX - SJO
PDXSJO
Portland
Sat 5/16
7:45 pm-7:15 am
1 stop10h 30m
San José Juan Santamaria Intl
Sun 5/24
6:00 am-12:50 am
2 stops19h 50m
$523
PortlandSan José
PDX - SJO
PDXSJO
Portland
Sat 7/4
12:50 pm-10:11 am
2 stops20h 21m
San José Juan Santamaria Intl
Wed 7/15
8:45 am-12:50 am
1 stop17h 05m
$554
PortlandLiberia
PDX - LIR
PDXLIR
Portland
Sun 5/24
4:15 pm-12:10 pm
2 stops18h 55m
Liberia
Sun 5/31
8:30 am-12:50 am
1 stop17h 20m
$575
PortlandLiberia
PDX - LIR
PDXLIR
Portland
Sat 5/23
7:00 am-6:19 pm
1 stop10h 19m
Liberia
Sun 5/31
8:30 am-11:03 pm
1 stop15h 33m
$584
PortlandLiberia
PDX - LIR
PDXLIR
Portland
Mon 6/8
5:15 am-9:50 am
3 stops27h 35m
Liberia
Wed 7/15
11:10 am-10:20 am
2 stops24h 10m
$625
Cheapest one-way
PortlandSan José
PDX - SJO
PDXSJO
Portland
Sat 5/30
7:13 am-7:37 pm
1 stop11h 24m
$178
Showing 1-10 of 27 resultsSorted by cheapest first
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.
PDX-SJO
PDX-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
PDX-CR0
PDX-SJO
PDX-LIR
How far ahead should I book a flight from Portland to Costa Rica?
To ensure you get the cheapest price possible for a flight from Portland to Costa Rica, you should look to book at least 41 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest month to book a flight from Portland to Costa Rica?
Currently, September is the cheapest month in which you can book a flight from Portland to Costa Rica (average of $146). Flying from Portland to Costa Rica in June is currently the most expensive (average of $336). 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 May 1, 2026.
Read reviews from past customers who have flown Southwest,Alaska Airlines, andDelta from Portland to Costa Rica. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.5
Overall
8.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Overall
8.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Overall
8.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Overall
8.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Overall
8.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Entertainment
7.5
Overall
8.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
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 May 1, 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 May 1, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$275 | Average$536 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$275 | Average$511 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$287 | Average$445 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$295 | Average$516 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$492 | Average$968 | FlexibilityNo cancel fee | On-time63% |