Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Islip, New York to San Jose from $450

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Islip, New York to San Jose departing on 8/13. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Islip, New York to San Jose

Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
6:10 am - 1:00 pm
ISP
-
SJC
9h 50m
1 stop
Southwest Logo
10:30 pm - 9:40 am
SJC
-
ISP
8h 10m
1 stop
$450Southwest
Thu, Aug 13 - Sun, Aug 16
Southwest Logo
6:10 am - 1:00 pm
ISP
-
SJC
9h 50m
1 stop
Southwest Logo
8:15 pm - 9:40 am
SJC
-
ISP
10h 25m
2 stops
$455Southwest
Thu, Aug 13 - Sun, Aug 16
Southwest Logo
12:35 pm - 7:35 pm
ISP
-
SJC
10h 00m
2 stops
Southwest Logo
9:40 am - 10:35 pm
SJC
-
ISP
9h 55m
2 stops
$514Southwest
Thu, Aug 13 - Sun, Aug 16
Southwest Logo
6:00 am - 3:25 pm
ISP
-
SJC
12h 25m
1 stop
Southwest Logo
9:40 pm - 8:05 am
SJC
-
ISP
7h 25m
1 stop
$605Southwest
Fri, Jun 12 - Tue, Jun 16
Southwest Logo
6:00 am - 3:25 pm
ISP
-
SJC
12h 25m
1 stop
Southwest Logo
7:50 pm - 8:05 am
SJC
-
ISP
9h 15m
2 stops
$670Southwest
Fri, Jun 12 - Tue, Jun 16
Southwest Logo
6:00 am - 12:20 pm
ISP
-
SJC
9h 20m
1 stop
Southwest Logo
8:10 am - 11:10 pm
SJC
-
ISP
12h 00m
2 stops
$757Southwest
Tue, Jun 9 - Sat, Jun 13
Southwest Logo
4:40 pm - 11:25 pm
ISP
-
SJC
9h 45m
2 stops
Southwest Logo
8:10 am - 11:10 pm
SJC
-
ISP
12h 00m
2 stops
$762Southwest
Tue, Jun 9 - Sat, Jun 13
Southwest Logo
6:00 am - 12:20 pm
ISP
-
SJC
9h 20m
1 stop
Southwest Logo
9:40 pm - 11:45 am
SJC
-
ISP
11h 05m
1 stop
$790Southwest
Tue, Jun 9 - Sat, Jun 13
Southwest Logo
6:00 am - 1:55 pm
ISP
-
SJC
10h 55m
2 stops
Southwest Logo
7:50 pm - 8:05 am
SJC
-
ISP
9h 15m
2 stops
$893Southwest
Fri, Jun 12 - Tue, Jun 16

Southwest flights from Islip, New York to San Jose, California

Our best Southwest deals on Islip, New York to San Jose, California flight tickets
Southwest
Aug 13
ISP6:10 amIslip Long Island
9h 50m
1 stop
SJC1:00 pmSan Jose
Aug 16
SJC10:30 pmSan Jose
8h 10m
1 stop
ISP9:40 amIslip Long Island
$450
Southwest
Aug 13
ISP6:10 amIslip Long Island
9h 50m
1 stop
SJC1:00 pmSan Jose
Aug 16
SJC8:15 pmSan Jose
10h 25m
2 stops
ISP9:40 amIslip Long Island
$455
Southwest
Aug 13
ISP12:35 pmIslip Long Island
10h 00m
2 stops
SJC7:35 pmSan Jose
Aug 16
SJC9:40 amSan Jose
9h 55m
2 stops
ISP10:35 pmIslip Long Island
$514

momondo Fare Finder

 
Customize your flight search to find flights from Islip, New York to San Jose, California 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, momondo users made 832,500 searches. Data last updated May 29, 2026.
Use the filters below to find and compare flights from Islip, New York to San Jose, California that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

IslipSan Jose

ISP - SJC

ISPSJC

Islip Long Island

Thu 8/13

6:10 am-1:00 pm

1 stop9h 50m

San Jose

Sun 8/16

10:30 pm-9:40 am

1 stop8h 10m

$450

IslipSan Jose

ISP - SJC

ISPSJC

Islip Long Island

Thu 8/13

6:10 am-1:00 pm

1 stop9h 50m

San Jose

Sun 8/16

8:15 pm-9:40 am

2 stops10h 25m

$455

IslipSan Jose

ISP - SJC

ISPSJC

Islip Long Island

Thu 8/13

12:35 pm-7:35 pm

2 stops10h 00m

San Jose

Sun 8/16

9:40 am-10:35 pm

2 stops9h 55m

$514

IslipSan Jose

ISP - SJC

ISPSJC

Islip Long Island

Fri 6/12

6:00 am-3:25 pm

1 stop12h 25m

San Jose

Tue 6/16

9:40 pm-8:05 am

1 stop7h 25m

$605

IslipSan Jose

ISP - SJC

ISPSJC

Islip Long Island

Fri 6/12

6:00 am-3:25 pm

1 stop12h 25m

San Jose

Tue 6/16

7:50 pm-8:05 am

2 stops9h 15m

$670

IslipSan Jose

ISP - SJC

ISPSJC

Islip Long Island

Tue 6/9

6:00 am-12:20 pm

1 stop9h 20m

San Jose

Sat 6/13

8:10 am-11:10 pm

2 stops12h 00m

$757

IslipSan Jose

ISP - SJC

ISPSJC

Islip Long Island

Tue 6/9

4:40 pm-11:25 pm

2 stops9h 45m

San Jose

Sat 6/13

8:10 am-11:10 pm

2 stops12h 00m

$762

IslipSan Jose

ISP - SJC

ISPSJC

Islip Long Island

Tue 6/9

6:00 am-12:20 pm

1 stop9h 20m

San Jose

Sat 6/13

9:40 pm-11:45 am

1 stop11h 05m

$790

IslipSan Jose

ISP - SJC

ISPSJC

Islip Long Island

Fri 6/12

6:00 am-1:55 pm

2 stops10h 55m

San Jose

Tue 6/16

7:50 pm-8:05 am

2 stops9h 15m

$893

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to San Jose from

How to get the cheapest flight ticket from Islip, New York to San Jose, California

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What airlines fly to San Jose, California?

United Airlines, Alaska Airlines and JetBlue are the top three most popular airlines that fly to San Jose, California from Islip, New York according to our data. United Airlines is the first choice among our users, with 41% of people opting to fly with this airline when traveling to San Jose, California. Keep in mind that there are 10 different airlines that fly to San Jose, California on a routine basis, so you have a few additional options to choose from.

When to book flights from Islip, New York to San Jose, California

Are you open to changing your travel dates? Check out the ideal times to fly from Islip, New York to San Jose, California according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Islip, New York to San Jose, California (ISP to SJC) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Islip, New York to San Jose, California

Fastest flight time

12h 25m

Direct flights

None
The fastest flight from Islip, New York to San Jose, California takes 12h 25m
There are no direct flights from Islip, New York to San Jose, California. There are no popular flight routes from Islip, New York to San Jose, California.
Search flight deals

Frequently asked questions about flying from Islip, New York to San Jose, California

  • How far is Islip Long Island to San Jose by plane?

    The distance between Islip Long Island and San Jose is about 2587.7 mi. A reasonable flight in good conditions will take 12h 25m.

  • When did momondo last update prices for flights from Islip Long Island Airport to San Jose Airport?

    Prices for flights from Islip Long Island Airport to San Jose Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Islip Long Island Airport to San Jose Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Islip Long Island Airport to San Jose Airport.

  • What documentation or ID do you need to fly to San Jose Airport?

    The required travel and health documents for your San Jose Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San Jose Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from Islip to San Jose?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Islip to San Jose. momondo saves you time and could save you money on your trip.

Can I find flights from Islip to San Jose with flexible booking policies on momondo?

momondo does allow users to show only those flights to San Jose from Islip which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Islip to San Jose?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Islip to San Jose.

I’m not ready to book a flight from Islip to San Jose right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Islip to San Jose now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to San Jose and let you know when they change.

An easier way to manage your San Jose, California trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sun 6/28
Sun 7/5
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States