$133+ Cheap flights from Oregon 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 2/15. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SJO
Mar 5 — Mar 121
1 adult, Economy
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Find cheap flights from Oregon 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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Cheapest flights from Oregon to Costa RicaExplore the most affordable flight options available from Oregon to Costa Rica. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 3, 2026.
Explore the most affordable flight options available from Oregon to Costa Rica. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 3, 2026.
This American Airlines deal was found by Cheapflights users on 2/1. 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 2/1911:35 pm
PDX
- SJO
1 stop18h 37m
American Airlines
Thu 3/58:00 am
SJO
- PDX
1 stop17h 50m
American Airlines
Deal found 2/1![American Airlines logo]()
$297
This American Airlines deal was found by Cheapflights users on 2/1. 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 3/111:35 pm
PDX
- SJO
1 stop18h 37m
American Airlines
Tue 3/102:20 pm
SJO
- PDX
1 stop23h 41m
American Airlines
Deal found 2/1![American Airlines logo]()
$305
This United Airlines deal was found by Cheapflights users on 2/3. 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 3/111:59 pm
PDX
- SJO
1 stop10h 57m
United Airlines
Thu 3/128:40 am
SJO
- PDX
1 stop15h 24m
United Airlines
Deal found 2/3![United Airlines logo]()
$308
This American Airlines deal was found by Cheapflights users on 2/2. 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 4/2710:28 pm
PDX
- SJO
1 stop11h 39m
American Airlines
Thu 5/711:35 pm
SJO
- PDX
1 stop24h 14m
American Airlines
Deal found 2/2![American Airlines logo]()
$316
This American Airlines deal was found by Cheapflights users on 2/1. 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 2/1811:35 pm
PDX
- SJO
1 stop18h 37m
American Airlines
Wed 2/257:00 am
SJO
- PDX
2 stops16h 58m
American Airlines
Deal found 2/1![American Airlines logo]()
$317
This United Airlines deal was found by Cheapflights users on 2/2. 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 3/22:00 pm
MFR
- SJO
1 stop16h 32m
United Airlines
Mon 3/98:40 am
SJO
- MFR
1 stop15h 18m
United Airlines
Deal found 2/2![United Airlines logo]()
$319
This Trip.com deal was found by Cheapflights users on 2/2. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/57:00 am
PDX
- SJO
1 stop30h 30m
Multiple Airlines
Sun 2/87:45 am
SJO
- PDX
1 stop14h 42m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$322
This American Airlines deal was found by Cheapflights users on 2/3. 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 2/251:39 pm
BOI
- SJO
1 stop8h 04m
American Airlines
Wed 3/43:59 pm
SJO
- BOI
2 stops21h 49m
American Airlines
Deal found 2/3![American Airlines logo]()
$324
This Trip.com deal was found by Cheapflights users on 2/2. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/17:00 am
PDX
- SJO
1 stop30h 30m
Multiple Airlines
Tue 3/107:45 am
SJO
- PDX
1 stop13h 59m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$325
This Trip.com deal was found by Cheapflights users on 2/3. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/57:00 am
PDX
- SJO
1 stop30h 30m
Multiple Airlines
Tue 3/107:45 am
SJO
- PDX
1 stop13h 59m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$326
This Trip.com deal was found by Cheapflights users on 2/3. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/37:00 am
PDX
- SJO
1 stop30h 30m
Multiple Airlines
Tue 3/107:45 am
SJO
- PDX
1 stop13h 59m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$327
This Trip.com deal was found by Cheapflights users on 1/31. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/67:00 am
PDX
- SJO
1 stop30h 30m
Multiple Airlines
Mon 2/97:45 am
SJO
- PDX
1 stop14h 42m
Multiple Airlines
Deal found 1/31![Multiple Airlines logo]()
$329
Best flights from Oregon to Costa RicaDiscover carefully curated flight deals from Oregon to Costa Rica that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 3, 2026.
Discover carefully curated flight deals from Oregon to Costa Rica that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 3, 2026.
This United Airlines deal was found by Cheapflights users on 2/1. 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 5/311:59 pm
PDX
- SJO
1 stop11h 22m
United Airlines
Wed 5/131:25 pm
SJO
- PDX
1 stop10h 34m
United Airlines
Deal found 2/1![United Airlines logo]()
$308
This Avianca deal was found by Cheapflights users on 2/1. 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 3/37:16 am
PDX
- SJO
2 stops13h 59m
Multiple Airlines
Tue 3/107:45 am
SJO
- PDX
1 stop13h 59m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$327
This American Airlines deal was found by Cheapflights users on 2/2. 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 2/1610:53 pm
PDX
- LIR
1 stop11h 17m
American Airlines
Fri 2/202:32 pm
LIR
- PDX
1 stop11h 45m
American Airlines
Deal found 2/2![American Airlines logo]()
$366
This Alaska Airlines deal was found by Cheapflights users on 2/1. 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.
Mon 3/92:30 pm
PDX
- LIR
1 stop15h 06m
Alaska Airlines
Wed 3/1111:45 am
LIR
- PDX
1 stop22h 50m
Alaska Airlines
Deal found 2/1![Alaska Airlines logo]()
$374
This KAYAK deal was found by Cheapflights users on 2/2. 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.
Wed 4/1510:23 pm
PDX
- SJO
2 stops22h 13m
GOL
Mon 4/2012:35 pm
SJO
- PDX
2 stops29h 24m
GOL
Deal found 2/2![GOL logo]()
$398
This United Airlines deal was found by Cheapflights users on 2/2. 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 3/811:59 pm
PDX
- SJO
1 stop10h 57m
United Airlines
Fri 3/138:40 am
SJO
- PDX
1 stop15h 24m
United Airlines
Deal found 2/2![United Airlines logo]()
$308
This United Airlines deal was found by Cheapflights users on 2/1. 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.
Fri 4/177:03 pm
BOI
- SJO
1 stop12h 12m
United Airlines
Mon 4/278:45 am
SJO
- BOI
1 stop11h 08m
United Airlines
Deal found 2/1![United Airlines logo]()
$330
This American Airlines deal was found by Cheapflights users on 2/2. 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 5/22:49 pm
EUG
- SJO
2 stops19h 36m
American Airlines
Sun 5/1011:35 pm
SJO
- EUG
2 stops22h 46m
American Airlines
Deal found 2/2![American Airlines logo]()
$369
This Alaska Airlines deal was found by Cheapflights users on 2/2. 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.
Sun 2/229:30 pm
PDX
- LIR
1 stop18h 28m
Alaska Airlines
Mon 3/27:08 pm
LIR
- PDX
1 stop20h 17m
Alaska Airlines
Deal found 2/2![Alaska Airlines logo]()
$380
This United Airlines deal was found by Cheapflights users on 2/2. 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 3/72:00 pm
MFR
- SJO
1 stop16h 32m
United Airlines
Sat 3/145:40 am
SJO
- MFR
2 stops18h 18m
United Airlines
Deal found 2/2![United Airlines logo]()
$335
This American Airlines deal was found by Cheapflights users on 2/2. 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 3/111:35 pm
PDX
- LIR
2 stops12h 50m
American Airlines
Thu 3/121:32 pm
LIR
- PDX
1 stop11h 43m
American Airlines
Deal found 2/2![American Airlines logo]()
$371
This Alaska Airlines deal was found by Cheapflights users on 2/2. 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.
Sun 5/38:38 pm
EUG
- SJO
2 stops26h 07m
Alaska Airlines
Sun 5/1012:55 am
SJO
- EUG
2 stops24h 04m
Alaska Airlines
Deal found 2/2![Alaska Airlines logo]()
$393
This Expedia deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/17:14 pm
BOI
- SJO
3 stops16h 31m
Multiple Airlines
Mon 5/1112:40 pm
SJO
- BOI
3 stops23h 54m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$434
This American Airlines deal was found by Cheapflights users on 2/3. 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 4/2010:28 pm
PDX
- LIR
1 stop11h 56m
American Airlines
Tue 5/52:10 pm
LIR
- PDX
1 stop27h 49m
American Airlines
Deal found 2/3![American Airlines logo]()
$376
This United Airlines deal was found by Cheapflights users on 2/2. 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 3/35:00 am
BOI
- SJO
2 stops14h 39m
United Airlines
Sat 3/79:40 am
SJO
- BOI
1 stop12h 33m
United Airlines
Deal found 2/2![United Airlines logo]()
$348
This Alaska Airlines deal was found by Cheapflights users on 2/2. 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.
Mon 3/98:12 pm
BOI
- LIR
1 stop10h 24m
Alaska Airlines
Wed 3/1111:45 am
LIR
- BOI
1 stop11h 15m
Alaska Airlines
Deal found 2/2![Alaska Airlines logo]()
$422
This American Airlines deal was found by Cheapflights users on 2/2. 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 2/169:44 pm
PDX
- LIR
2 stops14h 29m
American Airlines
Mon 2/232:32 pm
LIR
- PDX
1 stop11h 45m
American Airlines
Deal found 2/2![American Airlines logo]()
$385
This Expedia deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/177:05 pm
BOI
- SJO
2 stops28h 10m
Multiple Airlines
Mon 4/2712:40 pm
SJO
- BOI
3 stops23h 54m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$468
This United Airlines deal was found by Cheapflights users on 2/1. 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.
Fri 4/247:03 pm
BOI
- SJO
2 stops15h 08m
United Airlines
Mon 5/48:45 am
SJO
- BOI
1 stop10h 26m
United Airlines
Deal found 2/1![United Airlines logo]()
$359
This Alaska Airlines deal was found by Cheapflights users on 2/2. 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.
Mon 3/91:29 pm
EUG
- LIR
2 stops16h 07m
Alaska Airlines
Thu 3/128:05 am
LIR
- EUG
2 stops16h 53m
Alaska Airlines
Deal found 2/2![Alaska Airlines logo]()
$422
This United Airlines deal was found by Cheapflights users on 2/2. 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 3/47:10 am
PDX
- LIR
1 stop9h 27m
United Airlines
Wed 3/117:35 am
LIR
- PDX
1 stop16h 36m
United Airlines
Deal found 2/2![United Airlines logo]()
$366
This Alaska Airlines deal was found by Cheapflights users on 1/31. 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.
Fri 5/16:00 am
EUG
- SJO
2 stops16h 45m
Alaska Airlines
Thu 5/712:55 am
SJO
- EUG
2 stops15h 30m
Alaska Airlines
Deal found 1/31![Alaska Airlines logo]()
$436
This American Airlines deal was found by Cheapflights users on 2/1. 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 5/16:43 am
BOI
- SJO
1 stop14h 53m
American Airlines
Mon 5/112:22 pm
SJO
- BOI
2 stops22h 41m
American Airlines
Deal found 2/1![American Airlines logo]()
$442
This United Airlines deal was found by Cheapflights users on 2/3. 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 3/35:02 am
MFR
- SJO
2 stops13h 37m
United Airlines
Tue 3/105:30 am
SJO
- MFR
2 stops16h 48m
United Airlines
Deal found 2/3![United Airlines logo]()
$391
This Alaska Airlines deal was found by Cheapflights users on 2/2. 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 4/117:00 am
RDM
- SJO
2 stops39h 53m
Alaska Airlines
Mon 4/201:03 am
SJO
- RDM
2 stops23h 55m
Alaska Airlines
Deal found 2/2![Alaska Airlines logo]()
$449
This American Airlines deal was found by Cheapflights users on 2/2. 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 3/256:37 pm
BOI
- SJO
2 stops14h 48m
American Airlines
Mon 4/272:22 pm
SJO
- BOI
2 stops22h 41m
American Airlines
Deal found 2/2![American Airlines logo]()
$474
This United Airlines deal was found by Cheapflights users on 2/2. 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 5/25:00 am
PDX
- LIR
1 stop9h 19m
United Airlines
Sun 5/101:20 pm
LIR
- PDX
1 stop10h 39m
United Airlines
Deal found 2/2![United Airlines logo]()
$394
This Alaska Airlines deal was found by Cheapflights users on 2/3. 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.
Mon 3/99:52 am
BOI
- LIR
2 stops20h 44m
Alaska Airlines
Wed 3/256:12 pm
LIR
- BOI
2 stops29h 44m
Alaska Airlines
Deal found 2/3![Alaska Airlines logo]()
$461
This United Airlines deal was found by Cheapflights users on 2/1. 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 3/111:59 pm
PDX
- SJO
1 stop10h 57m
United Airlines
Sun 3/156:30 am
SJO
- PDX
1 stop17h 30m
United Airlines
Deal found 2/1![United Airlines logo]()
$401
This Alaska Airlines deal was found by Cheapflights users on 2/2. 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.
Tue 4/282:57 pm
BOI
- LIR
2 stops15h 23m
Alaska Airlines
Mon 5/411:20 am
LIR
- BOI
2 stops20h 47m
Alaska Airlines
Deal found 2/2![Alaska Airlines logo]()
$463
Last-minute flights from Oregon to Costa RicaDiscover last-minute flight deals from Oregon to Costa Rica. Data last updated February 3, 2026 and is based on user searches.
Discover last-minute flight deals from Oregon to Costa Rica. Data last updated February 3, 2026 and is based on user searches.
This Trip.com deal was found by Cheapflights users on 2/2. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/57:00 am
PDX
- SJO
1 stop30h 30m
Multiple Airlines
Sun 2/87:45 am
SJO
- PDX
1 stop14h 42m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$322
This Trip.com deal was found by Cheapflights users on 1/31. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/67:00 am
PDX
- SJO
1 stop30h 30m
Multiple Airlines
Mon 2/97:45 am
SJO
- PDX
1 stop14h 42m
Multiple Airlines
Deal found 1/31![Multiple Airlines logo]()
$329
This American Airlines deal was found by Cheapflights users on 2/1. 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 2/1811:35 pm
PDX
- SJO
1 stop18h 37m
American Airlines
Wed 2/257:00 am
SJO
- PDX
2 stops16h 58m
American Airlines
Deal found 2/1![American Airlines logo]()
$317
This American Airlines deal was found by Cheapflights users on 2/3. 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 2/1911:35 pm
PDX
- SJO
1 stop18h 37m
American Airlines
Thu 3/51:31 pm
SJO
- PDX
1 stop12h 19m
American Airlines
Deal found 2/3![American Airlines logo]()
$297
This American Airlines deal was found by Cheapflights users on 2/2. 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 2/251:39 pm
BOI
- SJO
1 stop8h 04m
American Airlines
Wed 3/43:59 pm
SJO
- BOI
2 stops21h 49m
American Airlines
Deal found 2/2![American Airlines logo]()
$324
This American Airlines deal was found by Cheapflights users on 2/1. 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 3/111:35 pm
PDX
- SJO
1 stop18h 37m
American Airlines
Tue 3/102:20 pm
SJO
- PDX
1 stop23h 41m
American Airlines
Deal found 2/1![American Airlines logo]()
$305
This United Airlines deal was found by Cheapflights users on 2/3. 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 3/111:59 pm
PDX
- SJO
1 stop10h 57m
United Airlines
Thu 3/128:40 am
SJO
- PDX
1 stop15h 24m
United Airlines
Deal found 2/3![United Airlines logo]()
$308
This Trip.com deal was found by Cheapflights users on 2/2. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/17:00 am
PDX
- SJO
1 stop30h 30m
Multiple Airlines
Tue 3/107:45 am
SJO
- PDX
1 stop13h 59m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$325
This United Airlines deal was found by Cheapflights users on 2/2. 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 3/22:00 pm
MFR
- SJO
1 stop16h 32m
United Airlines
Mon 3/98:40 am
SJO
- MFR
1 stop15h 18m
United Airlines
Deal found 2/2![United Airlines logo]()
$319
This Trip.com deal was found by Cheapflights users on 2/3. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/37:00 am
PDX
- SJO
1 stop30h 30m
Multiple Airlines
Tue 3/107:45 am
SJO
- PDX
1 stop13h 59m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$327
This Trip.com deal was found by Cheapflights users on 2/3. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/57:00 am
PDX
- SJO
1 stop30h 30m
Multiple Airlines
Tue 3/107:45 am
SJO
- PDX
1 stop13h 59m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$326
This Trip.com deal was found by Cheapflights users on 2/1. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/317:00 am
PDX
- SJO
1 stop31h 05m
Multiple Airlines
Mon 4/67:45 am
SJO
- PDX
1 stop13h 50m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$333
One-way flights from Oregon to Costa RicaSearch for one-way flight options from Oregon to Costa Rica. Find affordable one-way fares based on user searches. Data last updated February 3, 2026.
Search for one-way flight options from Oregon to Costa Rica. Find affordable one-way fares based on user searches. Data last updated February 3, 2026.
This American Airlines deal was found by Cheapflights users on 2/1. 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 2/1511:35 pm
PDX
- SJO
1 stop18h 37m
American Airlines
Deal found 2/1![American Airlines logo]()
$133
This American Airlines deal was found by Cheapflights users on 2/1. 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 4/711:23 pm
PDX
- SJO
1 stop11h 02m
American Airlines
Deal found 2/1![American Airlines logo]()
$135
This American Airlines deal was found by Cheapflights users on 2/1. 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 2/96:00 am
PDX
- SJO
1 stop14h 30m
American Airlines
Deal found 2/1![American Airlines logo]()
$163
This American Airlines deal was found by Cheapflights users on 2/2. 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 2/1610:53 pm
PDX
- LIR
1 stop13h 20m
American Airlines
Deal found 2/2![American Airlines logo]()
$167
This American Airlines deal was found by Cheapflights users on 2/2. 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 2/169:44 pm
PDX
- SJO
2 stops20h 49m
American Airlines
Deal found 2/2![American Airlines logo]()
$168
This United Airlines deal was found by Cheapflights users on 2/1. 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 2/282:08 pm
EUG
- SJO
1 stop16h 24m
United Airlines
Deal found 2/1![United Airlines logo]()
$172
This United Airlines deal was found by Cheapflights users on 2/3. 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.
Fri 2/66:00 am
EUG
- SJO
2 stops14h 00m
United Airlines
Deal found 2/3![United Airlines logo]()
$174
This United Airlines deal was found by Cheapflights users on 2/2. 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 6/176:30 am
BOI
- SJO
2 stops16h 09m
United Airlines
Deal found 2/2![United Airlines logo]()
$178
This United Airlines deal was found by Cheapflights users on 2/3. 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 4/71:39 pm
PDX
- SJO
2 stops21h 42m
United Airlines
Deal found 2/3![United Airlines logo]()
$183
This American Airlines deal was found by Cheapflights users on 2/2. 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 2/1811:40 pm
PDX
- SJO
2 stops32h 44m
American Airlines
Deal found 2/2![American Airlines logo]()
$184
This Travelocity deal was found by Cheapflights users on 2/1. 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.
Sun 3/87:00 am
PDX
- SJO
3 stops15h 40m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$185
This United Airlines deal was found by Cheapflights users on 2/2. 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 3/285:55 am
EUG
- SJO
1 stop24h 40m
United Airlines
Deal found 2/2![United Airlines logo]()
$185
Find flight deals from Oregon to Costa Rica
Keep the following information in mind while searching for Oregon to Costa Rica flight deals. Data was last updated February 3, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $297 (American Airlines) |
One-way from | $133 (American Airlines) |
Popular in | March |
Cheapest in | September |
Average price | $502 |
Cheapflights Fare Finder
Customize your flight search to find flights from Oregon 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 3, 2026.
Use the filters below to find and compare flights from Oregon to Costa Rica that are best for you.
Fly from
Oregon
Fly to
Costa Rica
Route
Depart
Return
Price
PortlandSan José
PDX - SJO
PDXSJO
Portland
Sun 5/3
11:59 pm-12:21 pm
1 stop11h 22m
San José Juan Santamaria Intl
Wed 5/13
1:25 pm-10:59 pm
1 stop10h 34m
$308
PortlandSan José
PDX - SJO
PDXSJO
Portland
Sun 3/8
11:59 pm-11:56 am
1 stop10h 57m
San José Juan Santamaria Intl
Fri 3/13
8:40 am-11:04 pm
1 stop15h 24m
$308
PortlandSan José
PDX - SJO
PDXSJO
Portland
Tue 3/3
7:16 am-11:15 pm
2 stops13h 59m
San José Juan Santamaria Intl
Tue 3/10
7:45 am-8:44 pm
1 stop13h 59m
$327
BoiseSan José
BOI - SJO
BOISJO
Boise Air Term. Gowen Fld
Fri 4/17
7:03 pm-7:15 am
1 stop12h 12m
San José Juan Santamaria Intl
Mon 4/27
8:45 am-7:53 pm
1 stop11h 08m
$330
MedfordSan José
MFR - SJO
MFRSJO
Medford
Sat 3/7
2:00 pm-8:32 am
1 stop16h 32m
San José Juan Santamaria Intl
Sat 3/14
5:40 am-10:58 pm
2 stops18h 18m
$335
BoiseSan José
BOI - SJO
BOISJO
Boise Air Term. Gowen Fld
Tue 3/3
5:00 am-8:39 pm
2 stops14h 39m
San José Juan Santamaria Intl
Sat 3/7
9:40 am-9:13 pm
1 stop12h 33m
$348
BoiseSan José
BOI - SJO
BOISJO
Boise Air Term. Gowen Fld
Fri 4/24
7:03 pm-10:11 am
2 stops15h 08m
San José Juan Santamaria Intl
Mon 5/4
8:45 am-7:11 pm
1 stop10h 26m
$359
PortlandLiberia
PDX - LIR
PDXLIR
Portland
Mon 2/16
10:53 pm-12:10 pm
1 stop11h 17m
Liberia
Fri 2/20
2:32 pm-12:17 am
1 stop11h 45m
$366
PortlandLiberia
PDX - LIR
PDXLIR
Portland
Wed 3/4
7:10 am-6:37 pm
1 stop9h 27m
Liberia
Wed 3/11
7:35 am-11:11 pm
1 stop16h 36m
$366
EugeneSan José
EUG - SJO
EUGSJO
Eugene
Sat 5/2
2:49 pm-11:25 am
2 stops19h 36m
San José Juan Santamaria Intl
Sun 5/10
11:35 pm-9:21 pm
2 stops22h 46m
$369
Showing 1-10 of 60 results
Best time to book a flight from Oregon to Costa Rica
Have a flexible travel schedule? Discover the best time to fly to Costa Rica from Oregon with our price prediction graph.
PDX-SJO
MFR-SJO
BOI-SJO
PDX-LIR
EUG-SJO
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 Oregon to Costa Rica
USOR-CR0
PDX-SJO
MFR-SJO
BOI-SJO
PDX-LIR
What is the cheapest month to book a flight from Oregon to Costa Rica?
Currently, November is the cheapest month in which you can book a flight from Oregon to Costa Rica (average of $219). Flying from Oregon to Costa Rica in June is currently the most expensive (average of $398). 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.
Related info for your journey
Find useful and relevant information for your journey from Oregon to Costa Rica. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Alternative routes for Oregon 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 Oregon to Costa Rica by cabin class
Find flights from Oregon to Costa Rica, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Oregon and Costa Rica flights
Browse other Oregon and Costa Rica flight options. Last updated on February 3, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Costa Rica
Find the right flight back to Oregon after your stay in Costa Rica
Oregon to Costa Rica flights
Consider these flights traveling from Oregon to Costa Rica.
Top 5 airlines flying from Oregon to Costa Rica
Discover the top 5 airlines that operate flights from Oregon 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 3, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$275 | Average$567 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$275 | Average$565 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$301 | Average$582 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$315 | Average$596 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$528 | Average$715 | FlexibilityNo cancel fee | On-time63% |