HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Francisco Bay Area

$128+ Cheap flights from Islip, NY (ISP) to San Francisco Bay Area

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/13. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — SFO
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Islip to San Francisco Bay Area with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Islip to San Francisco Bay Area

Cheapest flights from Islip to San Francisco Bay Area
Explore the most affordable flight options available from Islip to San Francisco Bay Area. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/302:19 pmISP - SFO
1 stop24h 35mMultiple Airlines
Sat 1/36:24 amSFO - ISP
2 stops34h 15mMultiple Airlines
Deal found 12/15$820
This Southwest deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2912:40 pmISP - OAK
2 stops11h 00mSouthwest
Fri 1/28:45 amOAK - ISP
2 stops12h 10mSouthwest
Deal found 12/17$984
This Expedia deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/317:40 pmISP - SFO
1 stop16h 49mJetBlue
Sun 1/411:59 pmSFO - ISP
1 stop15h 46mJetBlue
Deal found 12/16$988
This Gotogate deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/318:21 pmISP - SFO
2 stops18h 44mBreeze Airways
Sun 1/412:50 pmSFO - ISP
2 stops28h 17mBreeze Airways
Deal found 12/16$999
This Kiwi.com deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/302:19 pmISP - SFO
1 stop24h 35mBreeze Airways
Sat 1/312:39 pmSFO - ISP
1 stop22h 00mBreeze Airways
Deal found 12/15$1,037
This Expedia deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/317:40 pmISP - SFO
1 stop16h 49mMultiple Airlines
Sun 1/47:20 pmSFO - ISP
2 stops12h 45mMultiple Airlines
Deal found 12/16$1,304

Find flight deals from Islip to San Francisco Bay Area

Keep the following information in mind while searching for Islip to San Francisco Bay Area flight deals. Data was last updated December 18, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$472
(Southwest)

One-way from

$128
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$508
Provider with most accurate pricing for New York (NYC)-San Francisco flight deals.
Search Deals
Provider most trusted by Cheapflights users for New York (NYC)-San Francisco flights.
Search Deals
From Islip Long Island to San Francisco Bay Area
Search Deals
One-way flight from Islip Long Island to San Francisco Bay Area
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($31 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Islip to San Francisco Bay Area 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, Cheapflights users made 2,558,603 searches. Data last updated December 18, 2025.
Use the filters below to find and compare flights from Islip to San Francisco Bay Area that are best for you.

Fly from

Islip

Fly to

San Francisco Bay Area

Route

Depart

Return

Price

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Wed 3/25

4:40 pm-10:05 pm

1 stop8h 25m

San Francisco

Sat 3/28

9:20 pm-11:45 am

1 stop11h 25m

$472

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Sun 1/11

4:05 pm-9:55 pm

1 stop8h 50m

San Francisco

Fri 1/16

9:30 pm-11:45 am

1 stop11h 15m

$488

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Wed 3/11

1:27 pm-11:58 pm

1 stop13h 31m

San Francisco

Sun 3/22

10:40 am-11:55 pm

1 stop10h 15m

$558

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Wed 3/11

1:27 pm-11:58 pm

1 stop13h 31m

San Francisco

Fri 3/20

10:40 am-11:55 pm

1 stop10h 15m

$668

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Fri 2/6

12:25 pm-11:30 pm

1 stop14h 05m

San Francisco

Mon 2/9

8:30 pm-11:05 am

1 stop11h 35m

$796

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Tue 12/30

2:19 pm-11:54 am

1 stop24h 35m

San Francisco

Sat 1/3

6:24 am-7:39 pm

2 stops34h 15m

$820

IslipOakland

ISP - OAK

ISPOAK

Islip Long Island

Mon 12/29

12:40 pm-8:40 pm

2 stops11h 00m

Oakland

Fri 1/2

8:45 am-11:55 pm

2 stops12h 10m

$984

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Wed 12/31

7:40 pm-9:29 am

1 stop16h 49m

San Francisco

Sun 1/4

11:59 pm-6:45 pm

1 stop15h 46m

$988

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Tue 1/13

8:00 am-9:49 pm

3 stops40h 49m

$128

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Tue 1/13

8:00 am-1:24 pm

2 stops32h 24m

$134

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 20 results
1
2

Best time to book a flight from Islip to San Francisco Bay Area

Have a flexible travel schedule? Discover the best time to fly to San Francisco Bay Area from Islip 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 Islip to San Francisco Bay Area

What is the cheapest month to book a flight from Islip, New York to San Francisco Bay Area?

Currently, February is the cheapest month in which you can book a flight from Islip, New York to San Francisco Bay Area (average of $71). Flying from Islip, New York to San Francisco Bay Area in July is currently the most expensive (average of $190). 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 Islip to San Francisco Bay Area. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Islip to San Francisco Bay Area?

    Most people fly from Islip Long Island (ISP) if they book a flight from Islip to San Francisco Bay Area. Islip Long Island is conveniently located just 7.2 mi from Islip’s city center.

  • How long is the flight from Islip, New York to San Francisco Bay Area?

    Airlines like Southwest fly from Islip, New York to San Francisco Bay Area in about 8h 25m. The time it takes to get you to your destination can typically vary by up to . The distance from Islip, New York to San Francisco Bay Area is about 2611 mi.

  • What are the most popular routes from Islip, New York to San Francisco Bay Area?

    Most travelers choose Islip Long Island - San Francisco, Islip Long Island - Oakland or Islip Long Island - San Jose when deciding on the best route from Islip, New York to San Francisco Bay Area.

  • Can I find deals for flights from Islip to San Francisco Bay Area that include hotel bookings?

    Yes. In addition to deals on Islip to San Francisco Bay Area flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Islip to San Francisco Bay Area?

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

  • Can I find deals for business class flights from Islip to San Francisco Bay Area?

    Yes. Cheapflights offers flight deals from Islip to San Francisco Bay Area 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 Islip, New York to San Francisco Bay Area?

    Currently, February is the cheapest month in which you can book a flight from Islip, New York to San Francisco Bay Area (average of $71). Flying from Islip, New York to San Francisco Bay Area in July is currently the most expensive (average of $190). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Islip to San Francisco Bay Area

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Los Angeles flights
John F Kennedy Intl to Las Vegas flights
Newark to Las Vegas flights
Newark to Los Angeles flights
John F Kennedy Intl to San Francisco flights
LaGuardia to Los Angeles flights
LaGuardia to Las Vegas flights
Newark to San Francisco flights
John F Kennedy Intl to San Diego flights
LaGuardia to San Francisco flights
Newark to San Diego flights
LaGuardia to Burbank flights
John F Kennedy Intl to Ontario flights
Newark to Ontario flights
LaGuardia to San Diego flights
John F Kennedy Intl to Santa Ana flights
Newark to Palm Springs flights
LaGuardia to Santa Ana flights
LaGuardia to Ontario flights
Newark to Santa Ana flights
John F Kennedy Intl to Palm Springs flights
LaGuardia to Palm Springs flights
John F Kennedy Intl to Reno flights
John F Kennedy Intl to San Jose flights
Buffalo to Las Vegas flights
Rochester to Las Vegas flights
John F Kennedy Intl to Burbank flights
Albany to Las Vegas flights
Newark to Sacramento flights
Newark to Reno flights
Buffalo to Los Angeles flights
Syracuse to Las Vegas flights
Newark to San Jose flights
LaGuardia to Reno flights
White Plains to Las Vegas flights
John F Kennedy Intl to Sacramento flights
Rochester to Los Angeles flights
LaGuardia to San Jose flights
Islip to Las Vegas flights
John F Kennedy Intl to Oakland flights
LaGuardia to Sacramento flights
Islip to Los Angeles flights
White Plains to Los Angeles flights
Newark to Oakland flights
Newark to Burbank flights
John F Kennedy Intl to Long Beach flights
Syracuse to Los Angeles flights
Albany to Los Angeles flights
Syracuse to San Diego flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.