Cheapflights Tip: The best prices from Boston Logan Intl to San José Juan Santamaria Intl are usually found in September or October, booked 20 days in advance, depart on a Monday or Tuesday and return on a Monday
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 3 November 2025.
Popular in
December
Cheapest in
September
Average price
£313
Highest demand for flights based on searches. 6% potential increase in price (£20 potential increase over avg. return price).
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 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 Boston to San José
How far ahead should I book a flight from Boston to San José?
Use this chart to determine the optimal time to book a return flight from Boston to San José. Price data was last updated on 31 October 2025.
Booking 20 days in advance of your planned departure date is, on average, the best time to get cheap flights from Boston to San José. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Boston to San José?
Currently, September is the cheapest month in which you can book a flight from Boston to San José (average of £161). Flying from Boston to San José in March is currently the most expensive (average of £254). 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
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.
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 holiday 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, September is the cheapest month in which you can book a flight from Boston to San José (average of £161). Flying from Boston to San José in March is currently the most expensive (average of £254). 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.
Explore flights to San José departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 3 November 2025.
Find the best flight deals on Cheapflights, where travellers 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?
Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Boston to San José. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.
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?
Cheapflights does show flights with no change fees to all users. To see these options for flights from Boston to San José, users can toggle the no change fees filter when performing a flight search.
Can Cheapflights notify me if prices for flights from Boston to San José become cheaper?
Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!
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