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Cheap flights from Portsmouth to Costa Rica from £654

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 25/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SJO
16 Jul — 23 Jul1
1 adult

Cheap flight deals from Portsmouth to Costa Rica

Keep the following information in mind while searching for Portsmouth to Costa Rica flight deals. Data was last updated 11 July 2025.

Round-trip from

£654

Popular in

December

Cheapest in

October

Average price

£746
KLM
  • KLM
  • 25/9-29/9
  • 4 total stops
  • 69h 10m total
  • Portsmouth to Costa Rica
Highest demand for flights based on searches. 7% potential increase in price (£40 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (£16 potential savings vs. average return price).
Average for round-trip flights in July 2025

Find flight deals from Portsmouth to Costa Rica

Cheapest flights from Portsmouth to Costa Rica
Explore the most affordable flight options available from Portsmouth to Costa Rica. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 July 2025.

Thu 25/917:35SOU - SJO
2 stops30h 35mKLM
Mon 29/919:25SJO - SOU
2 stops38h 35mKLM
Deal found 9/7£654
Thu 25/909:20SOU - LIR
2 stops57h 40mKLM
Mon 29/913:25LIR - SOU
2 stops44h 35mKLM
Deal found 9/7£781

Cheapflights Fare Finder

Customise your flight search to find flights from Portsmouth 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 858,174 searches. Data last updated 11 July 2025.
Use the filters below to find and compare flights from Portsmouth to Costa Rica that are best for you.

Fly from

Portsmouth

Fly to

Costa Rica

Route

Depart

Return

Price

SouthamptonSan José

SOU - SJO

SOUSJO

Southampton Eastleigh

Thu 25/9

17:35-17:10

2 stops30h 35m

San José Juan Santamaria Intl

Mon 29/9

19:25-17:00

2 stops38h 35m

£654

SouthamptonLiberia

SOU - LIR

SOULIR

Southampton Eastleigh

Thu 25/9

09:20-12:00

2 stops57h 40m

Liberia

Mon 29/9

13:25-17:00

2 stops44h 35m

£781

Flights are sorted by cheapest return flights first.

Deals found on 9/7

Best time to book a flight from Portsmouth to Costa Rica

Have a flexible travel schedule? Discover the best time to fly to Costa Rica from Portsmouth with our price prediction graph.
Estimated return 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 Portsmouth to Costa Rica

What is the cheapest month to book a flight from Portsmouth to Costa Rica?

Currently, October is the cheapest month in which you can book a flight from Portsmouth to Costa Rica (average of £769). Flying from Portsmouth to Costa Rica in December is currently the most expensive (average of £1,101). 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 P0R to CR?

Find hourly flight availability from Portsmouth 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 11 July 2025.

When flying from Portsmouth to Costa Rica, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 11 July 2025.
Check out reviews from past customers who have flown with KLM from Portsmouth to Costa Rica to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Crew

8.4

Food

7.3

Comfort

7.7

Boarding

7.8

Entertainment

7.1

Overall

7.8

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Crew

8.4

Food

7.3

Comfort

7.7

Boarding

7.8

Entertainment

7.1

Overall

7.8

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Related info for your journey

Find useful and relevant information for your journey from Portsmouth to Costa Rica. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • Can I find deals for flights from Portsmouth to Costa Rica that include hotel bookings?

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

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

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

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

    Yes. Cheapflights offers flight deals from Portsmouth 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 Portsmouth to Costa Rica?

    Currently, October is the cheapest month in which you can book a flight from Portsmouth to Costa Rica (average of £769). Flying from Portsmouth to Costa Rica in December is currently the most expensive (average of £1,101). 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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Alternative routes for Portsmouth to Costa Rica

See prices for flight routes from nearby airports that may be better suited for you.

Top 10 airlines flying from Portsmouth to Costa Rica

Discover the top 10 airlines that operate flights from Portsmouth 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 858,174 searches. Data last updated 11 July 2025.
AirlineCheapestAverageFlexibilityOn-time
TUI AirwaysCheapest£447Average£588FlexibilityNo cancel feeOn-timeN/A
Search TUI Airways flights
IcelandairCheapest£451Average£552FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
JetBlueCheapest£453Average£559FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
LufthansaCheapest£473Average£627FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Air CanadaCheapest£503Average£570FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
KLMCheapest£511Average£720FlexibilityNo cancel feeOn-time75%
Search KLM flights
Air FranceCheapest£516Average£664FlexibilityNo cancel feeOn-time77%
Search Air France flights
AviancaCheapest£538Average£790FlexibilityNo cancel feeOn-time71%
Search Avianca flights
British AirwaysCheapest£554Average£852FlexibilityNo cancel feeOn-time70%
Search British Airways flights
United AirlinesCheapest£561Average£641FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Portsmouth to Costa Rica?

Cheapflights helps you search for flights from Portsmouth to Costa Rica via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Portsmouth to Costa Rica?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Portsmouth to Costa Rica for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Portsmouth to Costa Rica with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Portsmouth to Costa Rica, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Portsmouth to Costa Rica become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Costa Rica from Portsmouth today and book when prices fit your budget.

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