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$146+ Cheap flights from Portland, ME (PWM) to Costa Rica

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/18. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — SJO
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
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Cheap 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, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$350
(Trip.com)

One-way from

$146
(Kiwi.com)

Popular in

April

Cheapest in

September

Average price

$637
Provider with most accurate pricing for Portland-San José Juan Santamaria Intl flight deals.
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Provider most trusted by Cheapflights users for Portland-San José Juan Santamaria Intl flights.
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From Portland to Costa Rica
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One-way flight from Portland to Costa Rica
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Highest demand for flights based on searches. 9% potential increase in price ($84 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($32 potential savings vs. average RT price).
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Average for round-trip flights in May 2025
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Find flight deals from Portland to Costa Rica

Cheapest flights from Portland to Costa Rica
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, 2025.

This Trip.com 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/129:30 pmPWM - SJO
1 stop14h 57mMultiple Airlines
Fri 5/2311:32 amSJO - PWM
1 stop26h 30mMultiple Airlines
Deal found 4/30$350
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 5/164:01 pmPWM - SJO
2 stops22h 49mAmerican Airlines
Sat 5/316:03 amSJO - PWM
2 stops26h 24mAmerican Airlines
Deal found 4/30$415
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 5/176:13 amPWM - SJO
2 stops15h 24mUnited Airlines
Sat 5/3112:44 pmSJO - PWM
1 stop9h 15mUnited Airlines
Deal found 4/30$487
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.
Tue 11/251:06 pmPWM - LIR
2 stops24h 14mAmerican Airlines
Tue 12/23:25 pmLIR - PWM
2 stops19h 31mAmerican Airlines
Deal found 4/30$574
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.
Tue 12/29:30 amPWM - LIR
2 stops28h 38mUnited Airlines
Tue 12/98:50 amLIR - PWM
2 stops24h 54mUnited Airlines
Deal found 4/30$599
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/175:30 amPWM - SJO
1 stop8h 00mSouthwest
Sat 5/311:10 pmSJO - PWM
1 stop8h 15mSouthwest
Deal found 4/30$646
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/25:20 amPWM - SJO
1 stop8h 35mDelta
Mon 5/51:20 pmSJO - PWM
1 stop8h 39mDelta
Deal found 4/30$669
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/16:00 amPWM - LIR
1 stop7h 43mDelta
Thu 12/42:10 pmLIR - PWM
2 stops20h 41mDelta
Deal found 4/30$709
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/295:25 amPWM - LIR
1 stop7h 40mSouthwest
Sat 12/61:10 pmLIR - PWM
1 stop7h 45mSouthwest
Deal found 4/30$1,018
This Gurufare 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/15:59 pmPWM - LIR
2 stops21h 03mWestJet
Mon 12/82:55 pmLIR - PWM
2 stops22h 26mWestJet
Deal found 4/30$3,561

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, 2025.
Use the filters below to find and compare flights from Portland to Costa Rica that are best for you.

Fly from

Portland

Fly to

Costa Rica

Route

Depart

Return

Price

PortlandSan José

PWM - SJO

PWMSJO

Portland

Mon 5/12

9:30 pm-10:27 am

1 stop14h 57m

San José Juan Santamaria Intl

Fri 5/23

11:32 am-4:02 pm

1 stop26h 30m

$350

PortlandSan José

PWM - SJO

PWMSJO

Portland

Fri 5/16

4:01 pm-12:50 pm

2 stops22h 49m

San José Juan Santamaria Intl

Sat 5/31

6:03 am-10:27 am

2 stops26h 24m

$415

PortlandSan José

PWM - SJO

PWMSJO

Portland

Sat 5/17

6:13 am-7:37 pm

2 stops15h 24m

San José Juan Santamaria Intl

Sat 5/31

12:44 pm-11:59 pm

1 stop9h 15m

$487

PortlandLiberia

PWM - LIR

PWMLIR

Portland

Sat 6/14

4:43 pm-12:10 pm

2 stops21h 27m

Liberia

Sat 6/28

3:25 pm-2:24 pm

2 stops20h 59m

$639

PortlandSan José

PWM - SJO

PWMSJO

Portland

Sat 5/17

5:30 am-11:30 am

1 stop8h 00m

San José Juan Santamaria Intl

Sat 5/31

1:10 pm-11:25 pm

1 stop8h 15m

$646

PortlandSan José

PWM - SJO

PWMSJO

Portland

Tue 5/27

5:30 am-11:59 am

1 stop8h 29m

San José Juan Santamaria Intl

Tue 6/3

1:24 pm-11:59 pm

1 stop8h 35m

$879

PortlandSan José

PWM - SJO

PWMSJO

Portland

Sun 5/18

8:23 pm-10:27 am

1 stop16h 04m

$146

PortlandSan José

PWM - SJO

PWMSJO

Portland

Fri 8/1

6:00 am-11:56 am

1 stop7h 56m

$162

PortlandSan José

PWM - SJO

PWMSJO

Portland

Sat 5/17

6:13 am-7:37 pm

2 stops15h 24m

$169

PortlandSan José

PWM - SJO

PWMSJO

Portland

Fri 5/16

4:01 pm-6:35 pm

2 stops28h 34m

$196

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 13 results
1
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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.
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

What is the cheapest month to book a flight from Portland, Maine to Costa Rica?

Currently, September is the cheapest month in which you can book a flight from Portland, Maine to Costa Rica (average of $398). Flying from Portland, Maine to Costa Rica in March is currently the most expensive (average of $555). 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.

What is the cheapest time of day to fly from PWM to CR?

Find hourly flight availability from Portland to Costa Rica. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 1, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Portland, Maine to Costa Rica as you normally would.

Rainfall in Costa Rica by month

Plan your trip to Costa Rica by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Costa Rica ranges from 0.0 - 11.8 inches per month. September is typically the wettest month, when rainfall can reach 11.8 in. February is typically the driest time to visit Costa Rica when rainfall is around 0.0 in.

Temperature in Costa Rica by month

Plan your trip to Costa Rica by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Costa Rica, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 64.4 F).

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, 2025.
Southwest
8.0
Very good
4,294 reviews

Crew

8.6

Food

7.1

Boarding

8.2

Comfort

8.0

Overall

8.0

Entertainment

7.6

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
Southwest
8.0
Very good
4,294 reviews
Southwest
8.0
Very good
4,294 reviews

Crew

8.6

Food

7.1

Boarding

8.2

Comfort

8.0

Overall

8.0

Entertainment

7.6

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
Delta
8.0
Very good
7,934 reviews
Southwest
8.0
Very good
4,294 reviews

Crew

8.6

Food

7.1

Boarding

8.2

Comfort

8.0

Overall

8.0

Entertainment

7.6

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
United Airlines
7.4
Good
8,696 reviews
Southwest
8.0
Very good
4,294 reviews

Crew

8.6

Food

7.1

Boarding

8.2

Comfort

8.0

Overall

8.0

Entertainment

7.6

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
JetBlue
7.3
Good
2,922 reviews
Southwest
8.0
Very good
4,294 reviews

Crew

8.6

Food

7.1

Boarding

8.2

Comfort

8.0

Overall

8.0

Entertainment

7.6

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,294 reviews

Crew

8.6

Food

7.1

Boarding

8.2

Comfort

8.0

Overall

8.0

Entertainment

7.6

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!

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.

  • What airport do you fly from for flights from Portland to Costa Rica?

    For a flight from Portland to Costa Rica, you will be flying from Portland. Portland (PWM) is just 2.9 mi from the center of the city.

  • What are the cheapest airlines to fly from Portland, Maine to Costa Rica one-way?

    $162 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on United Airlines and American Airlines, with prices starting from $169 and $196, respectively.

  • Can I find deals for flights from Portland to Costa Rica that include hotel bookings?

    Yes. In addition to deals on Portland to Costa Rica flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portland to Costa Rica?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Costa Rica.

  • Can I find deals for business class flights from Portland to Costa Rica?

    Yes. Cheapflights offers flight deals from Portland to Costa Rica by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Portland, Maine to Costa Rica?

    Currently, September is the cheapest month in which you can book a flight from Portland, Maine to Costa Rica (average of $398). Flying from Portland, Maine to Costa Rica in March is currently the most expensive (average of $555). 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.

See more FAQs

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.

Top 4 airlines flying from Portland to Costa Rica

Discover the top 4 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, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$481Average$753FlexibilityNo cancel feeOn-time71%
DeltaCheapest$521Average$778FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$528Average$789FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$584Average$1,120FlexibilityNo cancel feeOn-time63%

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