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Flights from San Jose to Islip

Find the cheapest flight options from San Jose to Islip over the next three months. Book one-way tickets from PHP 10,977 and round-trip tickets from PHP 19,816.

      • SJO 14:06
        9h 49m
        1 stop
        ISP 00:55
        San Jose - Islip | Thu, Dec 25 | Jetblue Airways
        ISP 16:40
        17h 13m
        1 stop
        SJO 08:53
        Islip - San Jose | Thu, Jan 1 | Frontier Airlines
        PHP 19,816 PHP 54,019
        63% OFF
        63% OFF
        PHP 54,019 PHP 19,816
      • SJO 13:31
        10h 24m
        1 stop
        ISP 00:55
        San Jose - Islip | Thu, Dec 25 | Spirit Airlines
        ISP 16:40
        20h 45m
        1 stop
        SJO 12:25
        Islip - San Jose | Thu, Jan 1 | Frontier Airlines
        PHP 37,814 PHP 54,019
        30% OFF
        30% OFF
        PHP 54,019 PHP 37,814
      • SJO 13:00
        17h 25m
        1 stop
        ISP Invalid Date
        San Jose - Islip | Thu, Dec 11 | Normal Airline
        ISP 15:00
        6h
        Direct
        SJO 16:00
        Islip - San Jose | Sat, Dec 13 | Normal Airline
        Find More Flights
        Find More Flights

Displayed flight fares from San Jose to Islip are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Flight details for San Jose to Islip

The distance between San Jose and Islip is 3,598.22 km. Based on Trip.com's data, travel demand peaks in October. The off-season for travel is November.

Cheapest one-way flight pricePHP 10,977
Cheapest round-trip ticket pricePHP 19,816
Off-season for travelNovember
Peak season for travelOctober
Flight distance3,598.22 km

Find the best time to fly from San Jose to Islip

The cheapest time for San Jose to Islip flights: Dec 14 to Dec 21 — one way flight prices from PHP 10,976.

Cheapest flights
From price
Search
  • 714
  • 1421
  • 2128

  • Jan

    284
  • 411
  • 1118
  • 1825

  • Feb

    251
  • 18
  • 815
  • 1522

  • Mar

    221
Displayed fare trends are based on Trip.com's aggregated average of the lowest flight prices from San Jose to Islip, calculated over the upcoming 10 weeks.

Flight FAQs

  • What are the cheapest flights from San Jose to Islip (SJO-ISP)?

    Based on Trip.com data, Spirit Airlines offers one-way fares as low as PHP 10,977 on Cheapest nonstop routes (e.g. SJO to ISP on Mon, Dec 15), while Jetblue Airways offers Cheapest nonstop round-trips from PHP 19,816 departing on Thu, Dec 25 and returning on Thu, Jan 1.
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from San Jose to Islip is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • To find best deals on flights from San Jose to Islip, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Mon, Dec 15, with one-way flights priced at just PHP 10,977.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Spirit Airlines.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for Islip travel is around October.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from San Jose to Islip is November, when demand for travel is lower.
  • After crunching the numbers on our December flight calendar, it's currently cheapest to fly from San Jose to Islip on December 25, 2025 with Jetblue Airways, with prices starting at PHP 19,815.
  • The time difference between Islip and San Jose is 1h.
  • Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.