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Cheap flights from Boston to San José

BOS — SJO
11 Oct — 18 Oct1
1 adult
1 adult, Economy

Cheap flight deals from Boston to San José

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to San José (SJO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 11 September 2025.

Popular in

December

Cheapest in

September

Average price

C$ 542
Highest demand for flights based on searches. 11% potential increase in price (C$ 139 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease (C$ 52 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Best time to book a flight from Boston to San José

Have a flexible travel schedule? Discover the best time to fly to San José from Boston 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 Boston to San José

How far ahead should I book a flight from Boston to San José, San José Province?

Use this chart to determine the optimal time to book a round-trip flight from Boston to San José. Price data was last updated on 29 August 2025.

The best time to book flights from Boston to San José, San José Province is 20 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Boston to San José, San José Province?

Currently, May is the cheapest month in which you can book a flight from Boston to San José, San José Province (average of C$ 486). Flying from Boston to San José, San José Province in December is currently the most expensive (average of C$ 683). 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 BOS to SJO?

Find hourly flight availability from Boston to San José. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 11 September 2025.

It’s typically best to fly out from Boston to San José, San José Province in the evening. Doing so could potentially save you 46% on the flight price compared to flying in the morning, which is usually more expensive.

Reviews of airlines servicing San José

Get insights into the airlines that provide service to San José. 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 San José. Reviews last updated 11 September 2025.
See what other customers who have flown with Copa Airlines and Spirit Airlines from Boston to San José have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Copa Airlines
7.6
Good
1,531 reviews
Check prices

Entertainment

6.8

Food

6.8

Overall

7.6

Comfort

7.4

Crew

8.1

Boarding

7.8

Reviews

1 / 20
4.0
Okay

Juan Pablo,Sep 2025

PTY - VVI

not a good expirience, the plane was packed, the seats wear very unconftrable, coudent conect with the entratainmente service on the plane, the onboarding was in charge of a very angry lady i really had a unplesent trip
Copa Airlines
7.6
Good
1,531 reviews
Copa Airlines
7.6
Good
1,531 reviews
Check prices

Entertainment

6.8

Food

6.8

Overall

7.6

Comfort

7.4

Crew

8.1

Boarding

7.8

Reviews

1 / 20
4.0
Okay

Juan Pablo,Sep 2025

PTY - VVI

not a good expirience, the plane was packed, the seats wear very unconftrable, coudent conect with the entratainmente service on the plane, the onboarding was in charge of a very angry lady i really had a unplesent trip
Spirit Airlines
6.3
Okay
8,023 reviews
Copa Airlines
7.6
Good
1,531 reviews
Check prices

Entertainment

6.8

Food

6.8

Overall

7.6

Comfort

7.4

Crew

8.1

Boarding

7.8

Reviews

1 / 20
4.0
Okay

Juan Pablo,Sep 2025

PTY - VVI

not a good expirience, the plane was packed, the seats wear very unconftrable, coudent conect with the entratainmente service on the plane, the onboarding was in charge of a very angry lady i really had a unplesent trip

Related info for your journey

Find useful and relevant information for your journey from Boston to San José. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Boston to San José, San José Province round-trip?

    Flying on Spirit Airlines is currently your cheapest option to San José, San José Province, with prices starting at C$ 361. Another option worth looking into is Copa Airlines, starting at C$ 555 round trip. Users have found that Spirit Airlines is 51% cheaper than the other options available to this destination.

  • Can I find deals for flights from Boston to San José that include hotel bookings?

    Yes. In addition to deals on Boston to San José flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boston to San José?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to San José.

  • Can I find deals for business class flights from Boston to San José?

    Yes. Cheapflights offers flight deals from Boston to San José 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 Boston to San José, San José Province?

    Currently, May is the cheapest month in which you can book a flight from Boston to San José, San José Province (average of C$ 486). Flying from Boston to San José, San José Province in December is currently the most expensive (average of C$ 683). 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

Travelling to a place near San José?

Book flights to San José if you plan to visit one of these locations
Alajuela
Jacó
Heredia
Dominical
Manuel Antonio
Monteverde

Browse thousands of different options on Cheapflights for your next trip

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Complete your trip

Complete your trip to San José by adding a car rental and/or hotel reservation to your travel itinerary.
San José Juan Santamaria Intl Airport car rentals
Liberia car rentals

Top 2 airlines flying from Boston to San José

Discover the top 2 airlines that operate flights from Boston to San José. 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 629,999 searches. Data last updated 11 September 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapestC$ 361AverageC$ 540FlexibilityNo cancel feeOn-time65%
Search Spirit Airlines flights
Copa AirlinesCheapestC$ 555AverageC$ 683FlexibilityNo cancel feeOn-time70%
Search Copa Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Boston to San José?

When you search for this flight from Boston to San José, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Boston to San José?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Boston to San José.

Can Cheapflights find flights from Boston to San José with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Boston to San José flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Boston to San José become cheaper?

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

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