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$140+ Cheap flights from Portland, ME (PWM) to Costa Rica

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/30. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — SJO
Apr 5 — Apr 121
Sat 4/5
Sat 4/12
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 March 31, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$317
(American Airlines)

One-way from

$140
(Delta)

Popular in

April

Cheapest in

September

Average price

$787
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. 12% potential increase in price ($104 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($34 potential savings vs. average RT price).
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Average for round-trip flights in March 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 March 31, 2025.

This American Airlines deal was found by Cheapflights users on 3/31. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/297:35 amPWM - SJO
2 stops12h 49mAmerican Airlines
Tue 5/62:15 pmSJO - PWM
2 stops18h 05mAmerican Airlines
Deal found 3/31$317
This American Airlines deal was found by Cheapflights users on 3/30. 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.
Sun 5/114:01 pmPWM - LIR
2 stops21h 19mAmerican Airlines
Fri 5/162:05 pmLIR - PWM
2 stops19h 27mAmerican Airlines
Deal found 3/30$509
This United Airlines deal was found by Cheapflights users on 3/30. 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 6/266:10 amPWM - SJO
2 stops30h 01mUnited Airlines
Fri 7/41:30 pmSJO - PWM
2 stops30h 31mUnited Airlines
Deal found 3/30$525
This United Airlines deal was found by Cheapflights users on 3/31. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/64:56 pmPWM - LIR
2 stops19h 04mUnited Airlines
Sun 8/103:25 pmLIR - PWM
2 stops20h 59mUnited Airlines
Deal found 3/31$529
This Kiwi.com deal was found by Cheapflights users on 3/31. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/1112:21 pmPWM - SJO
1 stop24h 03mMultiple Airlines
Sat 4/195:52 pmSJO - PWM
2 stops39h 49mMultiple Airlines
Deal found 3/31$647
This Delta deal was found by Cheapflights users on 3/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/295:20 amPWM - SJO
1 stop8h 35mDelta
Tue 5/61:20 pmSJO - PWM
1 stop8h 39mDelta
Deal found 3/31$850
This Southwest deal was found by Cheapflights users on 3/30. 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.
Fri 11/145:30 amPWM - SJO
2 stops16h 00mSouthwest
Sat 11/221:10 pmSJO - PWM
1 stop10h 10mSouthwest
Deal found 3/30$873
This Mytrip deal was found by Cheapflights users on 3/31. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/612:38 pmPWM - LIR
3 stops29h 02mMultiple Airlines
Sun 8/1012:40 pmLIR - PWM
2 stops32h 37mMultiple Airlines
Deal found 3/31$1,456
This Ovago deal was found by Cheapflights users on 3/30. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/77:15 pmPWM - SJO
1 stop10h 20mAvianca
Mon 8/41:55 amSJO - PWM
2 stops15h 32mAvianca
Deal found 3/30$2,491

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 March 31, 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

Tue 4/29

7:35 am-6:24 pm

2 stops12h 49m

San José Juan Santamaria Intl

Tue 5/6

2:15 pm-10:20 am

2 stops18h 05m

$317

PortlandLiberia

PWM - LIR

PWMLIR

Portland

Sun 5/11

4:01 pm-11:20 am

2 stops21h 19m

Liberia

Fri 5/16

2:05 pm-11:32 am

2 stops19h 27m

$509

PortlandSan José

PWM - SJO

PWMSJO

Portland

Thu 6/26

6:10 am-10:11 am

2 stops30h 01m

San José Juan Santamaria Intl

Fri 7/4

1:30 pm-10:01 pm

2 stops30h 31m

$525

PortlandLiberia

PWM - LIR

PWMLIR

Portland

Wed 8/6

4:56 pm-10:00 am

2 stops19h 04m

Liberia

Sun 8/10

3:25 pm-2:24 pm

2 stops20h 59m

$529

PortlandSan José

PWM - SJO

PWMSJO

Portland

Fri 4/11

12:21 pm-10:24 am

1 stop24h 03m

San José Juan Santamaria Intl

Sat 4/19

5:52 pm-11:41 am

2 stops39h 49m

$647

PortlandSan José

PWM - SJO

PWMSJO

Portland

Tue 4/29

5:20 am-11:55 am

1 stop8h 35m

San José Juan Santamaria Intl

Tue 5/6

1:20 pm-11:59 pm

1 stop8h 39m

$850

PortlandLiberia

PWM - LIR

PWMLIR

Portland

Wed 8/6

12:38 pm-3:40 pm

3 stops29h 02m

Liberia

Sun 8/10

12:40 pm-11:17 pm

2 stops32h 37m

$1,456

PortlandSan José

PWM - SJO

PWMSJO

Portland

Mon 7/7

7:15 pm-3:35 am

1 stop10h 20m

San José Juan Santamaria Intl

Mon 8/4

1:55 am-7:27 pm

2 stops15h 32m

$2,491

PortlandSan José

PWM - SJO

PWMSJO

Portland

Wed 4/30

5:20 am-11:55 am

1 stop8h 35m

$140

PortlandSan José

PWM - SJO

PWMSJO

Portland

Tue 6/17

7:41 am-8:09 pm

2 stops14h 28m

$148

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

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 March 31, 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 March 31, 2025.
Read through reviews of airlines operating flights from Portland to Costa Rica, such as Delta, United Airlines and American Airlines. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,899 reviews

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Crew

8.5

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,899 reviews
Delta
8.0
Very good
7,899 reviews

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Crew

8.5

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,614 reviews
Delta
8.0
Very good
7,899 reviews

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Crew

8.5

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,899 reviews

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Crew

8.5

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Avianca
6.7
Okay
2,301 reviews
Delta
8.0
Very good
7,899 reviews

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Crew

8.5

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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?

    $140 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on American Airlines and United Airlines, with prices starting from $148 and $279, 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

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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 March 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$450Average$762FlexibilityNo cancel feeOn-time71%
DeltaCheapest$521Average$782FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$542Average$790FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$584Average$1,120FlexibilityNo cancel feeOn-time63%
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