$195+ Cheap flights from Portland, ME (PWM) to Costa Rica
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/2. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — SJO
Nov 19 — Nov 261
Round-trip
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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One-way
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 October 20, 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 October 20, 2026.
This American Airlines deal was found by Cheapflights users on 10/17. 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 12/16:47 pm -
2 stops21h 05m
Tue 12/81:42 pm -
2 stops19h 56m
Deal found 10/17![American Airlines logo]()
$508
This United Airlines deal was found by Cheapflights users on 10/17. 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 12/17:00 am -
1 stop13h 53m
Tue 12/81:55 pm -
1 stop8h 29m
Deal found 10/17![United Airlines logo]()
$513
This United Airlines deal was found by Cheapflights users on 10/16. 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 10/288:49 am -
1 stop12h 04m
Wed 11/411:28 pm -
1 stop8h 32m
Deal found 10/16![United Airlines logo]()
$540
This American Airlines deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/286:00 am -
2 stops16h 21m
Wed 11/42:01 pm -
2 stops19h 00m
Deal found 10/16![American Airlines logo]()
$554
This United Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/255:08 pm -
2 stops21h 14m
Wed 12/21:55 pm -
1 stop8h 29m
Deal found 10/20![United Airlines logo]()
$559
This United Airlines deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/295:50 am -
1 stop15h 03m
Thu 11/51:55 pm -
1 stop8h 26m
Deal found 10/16![United Airlines logo]()
$603
This American Airlines deal was found by Cheapflights users on 10/18. 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 11/195:45 am -
1 stop8h 22m
Tue 12/12:07 pm -
2 stops19h 23m
Deal found 10/18![American Airlines logo]()
$615
This American Airlines deal was found by Cheapflights users on 10/16. 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 11/256:47 pm -
2 stops21h 51m
Wed 12/23:54 pm -
2 stops19h 08m
Deal found 10/16![American Airlines logo]()
$629
This United Airlines deal was found by Cheapflights users on 10/15. 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 10/316:00 am -
2 stops14h 37m
Wed 11/45:20 pm -
1 stop14h 40m
Deal found 10/15![United Airlines logo]()
$774
This United Airlines deal was found by Cheapflights users on 10/15. 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.
Sun 11/295:50 am -
1 stop31h 04m
Sun 12/68:45 am -
2 stops28h 52m
Deal found 10/15![United Airlines logo]()
$923
This American Airlines deal was found by Cheapflights users on 10/16. 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 12/1712:42 pm -
2 stops23h 16m
Sun 1/32:00 pm -
2 stops21h 16m
Deal found 10/16![American Airlines logo]()
$1,622
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 October 20, 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 October 20, 2026.
This United Airlines deal was found by Cheapflights users on 10/15. 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.
Wed 2/248:55 am -
1 stop11h 58m
Wed 3/311:28 pm -
1 stop13h 10m
Deal found 10/15![United Airlines logo]()
$496
This American Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/16:36 pm -
2 stops20h 40m
Mon 3/11:31 pm -
2 stops21h 13m
Deal found 10/20![American Airlines logo]()
$636
This United Airlines deal was found by Cheapflights users on 10/17. 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 12/17:00 am -
1 stop13h 53m
Tue 12/81:55 pm -
1 stop8h 29m
Deal found 10/17![United Airlines logo]()
$513
This United Airlines deal was found by Cheapflights users on 10/18. 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 11/255:08 pm -
2 stops21h 14m
Wed 12/21:55 pm -
1 stop8h 29m
Deal found 10/18![United Airlines logo]()
$567
This United Airlines deal was found by Cheapflights users on 10/18. 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 1/306:00 am -
2 stops15h 39m
Fri 2/51:15 am -
2 stops16h 38m
Deal found 10/18![United Airlines logo]()
$567
This United Airlines deal was found by Cheapflights users on 10/18. 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 11/145:08 pm -
2 stops19h 17m
Thu 11/191:55 pm -
1 stop8h 26m
Deal found 10/18![United Airlines logo]()
$567
This United Airlines deal was found by Cheapflights users on 10/17. 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 1/236:00 am -
1 stop30h 54m
Sun 1/318:45 am -
2 stops28h 59m
Deal found 10/17![United Airlines logo]()
$578
This United Airlines deal was found by Cheapflights users on 10/15. 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.
Mon 2/227:43 pm -
1 stop16h 47m
Mon 3/18:45 am -
2 stops29h 08m
Deal found 10/15![United Airlines logo]()
$612
This United Airlines deal was found by Cheapflights users on 10/16. 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 2/97:10 am -
2 stops14h 29m
Fri 2/1211:28 pm -
1 stop17h 45m
Deal found 10/16![United Airlines logo]()
$612
This United Airlines deal was found by Cheapflights users on 10/16. 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 2/79:10 am -
2 stops29h 12m
Sun 2/1411:28 pm -
1 stop22h 27m
Deal found 10/16![United Airlines logo]()
$619
This United Airlines deal was found by Cheapflights users on 10/15. 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 10/313:41 pm -
2 stops23h 29m
Wed 11/42:20 pm -
2 stops22h 56m
Deal found 10/15![United Airlines logo]()
$774
Last-minute flights from Portland to Costa RicaDiscover last-minute flight deals from Portland to Costa Rica. Data last updated October 20, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Costa Rica. Data last updated October 20, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 10/16. 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 10/285:50 am -
2 stops15h 49m
Wed 11/41:55 pm -
1 stop8h 26m
Deal found 10/16![United Airlines logo]()
$540
This American Airlines deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/286:00 am -
2 stops16h 21m
Wed 11/42:01 pm -
2 stops19h 00m
Deal found 10/16![American Airlines logo]()
$554
This United Airlines deal was found by Cheapflights users on 10/15. 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.
Wed 10/285:50 am -
1 stop15h 03m
Fri 10/3010:28 pm -
1 stop18h 24m
Deal found 10/15![United Airlines logo]()
$670
This United Airlines deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/295:50 am -
1 stop15h 03m
Thu 11/51:55 pm -
1 stop8h 26m
Deal found 10/16![United Airlines logo]()
$603
This United Airlines deal was found by Cheapflights users on 10/15. 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 10/316:00 am -
2 stops14h 37m
Wed 11/45:20 pm -
1 stop14h 40m
Deal found 10/15![United Airlines logo]()
$774
This American Airlines deal was found by Cheapflights users on 10/15. 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.
Tue 11/34:10 pm -
2 stops21h 23m
Thu 11/53:35 pm -
2 stops17h 26m
Deal found 10/15![American Airlines logo]()
$1,752
This United Airlines deal was found by Cheapflights users on 10/15. 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.
Tue 11/35:08 pm -
2 stops21h 02m
Thu 11/55:20 pm -
1 stop14h 40m
Deal found 10/15![United Airlines logo]()
$2,687
This American Airlines deal was found by Cheapflights users on 10/18. 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 11/195:45 am -
1 stop8h 22m
Tue 12/12:07 pm -
2 stops19h 23m
Deal found 10/18![American Airlines logo]()
$615
This United Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/225:08 pm -
2 stops19h 17m
Tue 12/111:28 pm -
1 stop8h 37m
Deal found 10/20![United Airlines logo]()
$672
This United Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/255:08 pm -
2 stops21h 14m
Wed 12/21:55 pm -
1 stop8h 29m
Deal found 10/20![United Airlines logo]()
$559
This American Airlines deal was found by Cheapflights users on 10/16. 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 11/256:47 pm -
2 stops21h 51m
Wed 12/23:54 pm -
2 stops19h 08m
Deal found 10/16![American Airlines logo]()
$629
This United Airlines deal was found by Cheapflights users on 10/15. 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.
Sun 11/295:50 am -
1 stop31h 04m
Sun 12/68:45 am -
2 stops28h 52m
Deal found 10/15![United Airlines logo]()
$923
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 October 20, 2026.
Search for one-way flight options from Portland to Costa Rica. Find affordable one-way fares based on user searches. Data last updated October 20, 2026.
This United Airlines deal was found by Cheapflights users on 10/15. 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.
Tue 2/27:30 am -
2 stops14h 09m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/15![United Airlines logo]()
$195
This United Airlines deal was found by Cheapflights users on 10/15. 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.
Thu 2/47:50 pm -
2 stops18h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/15![United Airlines logo]()
$200
This American Airlines deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/16:00 am -
2 stops15h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/16![American Airlines logo]()
$241
This American Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/306:42 pm -
2 stops20h 53m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![American Airlines logo]()
$271
This United Airlines deal was found by Cheapflights users on 10/16. 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 11/255:08 pm -
2 stops45h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/16![United Airlines logo]()
$281
This BusinessClass deal was found by Cheapflights users on 10/18. 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.
Sun 1/106:36 pm -
2 stops20h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/18![GOL logo]()
$308
This United Airlines deal was found by Cheapflights users on 10/18. 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 1/109:10 am -
2 stops28h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/18![United Airlines logo]()
$310
This United Airlines deal was found by Cheapflights users on 10/15. 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.
Tue 11/38:47 am -
2 stops29h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/15![United Airlines logo]()
$311
This United Airlines deal was found by Cheapflights users on 10/17. 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 4/175:06 pm -
2 stops20h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/17![United Airlines logo]()
$313
This American Airlines deal was found by Cheapflights users on 10/17. 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 4/1810:48 am -
2 stops28h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/17![American Airlines logo]()
$335
This United Airlines deal was found by Cheapflights users on 10/17. 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 4/155:45 am -
2 stops32h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/17![United Airlines logo]()
$367
This American Airlines deal was found by Cheapflights users on 10/17. 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 4/165:10 pm -
2 stops22h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/17![American Airlines logo]()
$461
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 October 20, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $421 (American Airlines) |
One-way from | $195 (United Airlines) |
Popular in | December |
Cheapest in | July |
Average price | $392 |
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 7,457,451 searches. Data last updated October 20, 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
PortlandSan José
PWM Portland - SJO San José Juan Santamaria Intl
PWMSJO
Portland
Thu 2/4
6:00 am-6:16 pm
2 stops13h 16m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$195
PortlandSan José
PWM Portland - SJO San José Juan Santamaria Intl
PWMSJO
Portland
Tue 2/2
7:30 am-8:39 pm
2 stops14h 09m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$195
PortlandSan José
PWM Portland - SJO San José Juan Santamaria Intl
PWMSJO
Portland
Sun 11/1
6:00 am-8:50 pm
2 stops15h 50m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$241
PortlandSan José
PWM Portland - SJO San José Juan Santamaria Intl
PWMSJO
Portland
Wed 12/30
6:42 pm-2:35 pm
2 stops20h 53m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$271
PortlandLiberia
PWM Portland - LIR Liberia
PWMLIR
Portland
Wed 11/25
5:08 pm-1:10 pm
2 stops45h 02m
Liberia
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$281
PortlandSan José
PWM Portland - SJO San José Juan Santamaria Intl
PWMSJO
Portland
Sun 1/10
9:10 am-12:15 pm
2 stops28h 05m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$310
PortlandLiberia
PWM Portland - LIR Liberia
PWMLIR
Portland
Sat 4/17
5:06 pm-11:53 am
2 stops20h 47m
Liberia
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$313
PortlandLiberia
PWM Portland - LIR Liberia
PWMLIR
Portland
Sun 4/18
10:48 am-1:10 pm
2 stops28h 22m
Liberia
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$335
PortlandSan José
PWM Portland - SJO San José Juan Santamaria Intl
PWMSJO
Portland
Wed 2/24
8:55 am-7:53 pm
1 stop11h 58m
San José Juan Santamaria Intl
Wed 3/3
11:28 pm-1:38 pm
1 stop13h 10m
$496
PortlandSan José
PWM Portland - SJO San José Juan Santamaria Intl
PWMSJO
Portland
Tue 12/1
7:00 am-7:53 pm
1 stop13h 53m
San José Juan Santamaria Intl
Tue 12/8
1:55 pm-11:24 pm
1 stop8h 29m
$513
Showing 1-10 of 22 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.
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 $178). Flying from Portland, Maine to Costa Rica in December is currently the most expensive (average of $2,107). 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 October 20, 2026.
See what other customers who have flown with Southwest,Delta, andUnited 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.
Crew
8.6
Entertainment
7.4
Comfort
8.0
Boarding
8.1
Food
7.0
Overall
7.9
Reviews
1 / 20
8.0
ExcellentPatricia,Oct 2026
DAL - TPA
Crew
8.6
Entertainment
7.4
Comfort
8.0
Boarding
8.1
Food
7.0
Overall
7.9
Reviews
1 / 20
8.0
ExcellentPatricia,Oct 2026
DAL - TPA
Crew
8.6
Entertainment
7.4
Comfort
8.0
Boarding
8.1
Food
7.0
Overall
7.9
Reviews
1 / 20
8.0
ExcellentPatricia,Oct 2026
DAL - TPA
Crew
8.6
Entertainment
7.4
Comfort
8.0
Boarding
8.1
Food
7.0
Overall
7.9
Reviews
1 / 20
8.0
ExcellentPatricia,Oct 2026
DAL - TPA
Crew
8.6
Entertainment
7.4
Comfort
8.0
Boarding
8.1
Food
7.0
Overall
7.9
Reviews
1 / 20
8.0
ExcellentPatricia,Oct 2026
DAL - TPA
Crew
8.6
Entertainment
7.4
Comfort
8.0
Boarding
8.1
Food
7.0
Overall
7.9
Reviews
1 / 20
8.0
ExcellentPatricia,Oct 2026
DAL - TPA
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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Complete your trip
Complete your trip to Costa Rica by adding a car rental and/or hotel reservation to your travel itinerary.
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Portland and Costa Rica flights
Browse other Portland and Costa Rica flight options. Last updated on October 20, 2026.
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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 7,457,451 searches. Data last updated October 20, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$145 | Average$641 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$236 | Average$314 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$274 | Average$349 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$448 | Average$703 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$577 | Average$798 | FlexibilityNo cancel fee | On-time63% |