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Cheap flights from Boston to San José

BOS — SJO
26 Sep — 3 Oct1
1 adult
1 adult, Economy, 0 bags

Find flight deals from Boston to San José

Popular in

December

Cheapest in

October

Average price

C$ 728
Highest demand for flights based on searches. 2% potential increase in price (C$ 23 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease (C$ 29 potential savings vs. average RT price).
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Average for round-trip flights in August 2026
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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

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?

To ensure you get the cheapest price possible for a flight from Boston to San José, you should look to book at least 15 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, October is the cheapest month in which you can book a flight from Boston to San José (average of C$ 484). Flying from Boston to San José in December is currently the most expensive (average of C$ 868). 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.

Related info for your journey

  • 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?

    Currently, October is the cheapest month in which you can book a flight from Boston to San José (average of C$ 484). Flying from Boston to San José in December is currently the most expensive (average of C$ 868). 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
Manuel Antonio
Alajuela
Jacó
Heredia
Dominical
Monteverde

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San José Juan Santamaria Intl Airport car rentals
Liberia car rentals

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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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