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

A quick flight from Islip, New York to San Francisco can take about 8h 45m. Southwest provides one of the quickest options available for as low as $514. The distance from Islip, New York to San Francisco is about 2611 mi. Both multi-stop and nonstop flights can be found to your destination and back.

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 4.4 inches per month. January is typically the wettest month, when rainfall can reach 4.4 in. July is typically the driest time to visit San Francisco when rainfall is around 0.0 in.

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

What is the cheapest time of day to fly from ISP to SFO?

When flying from Islip, New York to San Francisco, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Most accurate provider : When it comes to deals on Islip, New York-San Francisco flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Islip, New York-San Francisco flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Islip, New York-San Francisco flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Islip, New York-San Francisco flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Islip, New York-San Francisco flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

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

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

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.

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

Yes. Cheapflights offers flight deals from Islip to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$223+ Flights from Islip, NY to San Francisco

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Cheap flight deals from Islip to San Francisco

Cheapest flights from Islip to San Francisco
Explore the most affordable flight options available from Islip to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 28, 2025.

Sun 12/289:59 amISP - SFO

1 stop16h 11mMultiple Airlines

Sun 1/47:20 pmSFO - ISP

2 stops12h 45mMultiple Airlines

Deal found 12/27

$1,549

Sun 12/2810:38 amISP - SFO

3 stops28h 24mBreeze Airways

Sun 1/412:50 pmSFO - ISP

2 stops28h 17mBreeze Airways

Deal found 12/27

$2,357

Best flights from Islip to San Francisco
Discover carefully curated flight deals from Islip to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 28, 2025.

Fri 3/135:55 pmISP - SFO

1 stop8h 45mSouthwest

Sun 3/1511:25 pmSFO - ISP

2 stops9h 15mSouthwest

Deal found 12/27

$514

Sun 1/1112:25 pmISP - SFO

1 stop25h 05mJetBlue

Thu 1/158:00 amSFO - ISP

1 stop24h 33mJetBlue

Deal found 12/27

$717

Sat 1/1012:25 pmISP - SFO

1 stop14h 40mMultiple Airlines

Wed 1/148:26 amSFO - ISP

1 stop8h 19mMultiple Airlines

Deal found 12/26

$884

Wed 1/712:25 pmISP - SFO

1 stop13h 07mJetBlue

Sat 1/1011:42 pmSFO - ISP

1 stop8h 51mJetBlue

Deal found 12/27

$783

Sun 1/1112:25 pmISP - SFO

1 stop14h 40mMultiple Airlines

Thu 1/159:42 pmSFO - ISP

2 stops19h 03mMultiple Airlines

Deal found 12/27

$1,444

Last-minute flights from Islip to San Francisco
Discover last-minute flight deals from Islip to San Francisco. Data last updated December 28, 2025 and is based on user searches.

Sun 12/289:59 amISP - SFO

1 stop16h 11mMultiple Airlines

Sun 1/47:20 pmSFO - ISP

2 stops12h 45mMultiple Airlines

Deal found 12/27

$1,549

Sun 12/2810:38 amISP - SFO

3 stops28h 24mBreeze Airways

Sun 1/412:50 pmSFO - ISP

2 stops28h 17mBreeze Airways

Deal found 12/27

$2,357

Wed 1/712:25 pmISP - SFO

1 stop13h 07mJetBlue

Sat 1/1011:42 pmSFO - ISP

1 stop8h 51mJetBlue

Deal found 12/27

$783

Sat 1/1012:25 pmISP - SFO

1 stop14h 40mMultiple Airlines

Wed 1/148:26 amSFO - ISP

1 stop8h 19mMultiple Airlines

Deal found 12/26

$884

Sun 1/1112:25 pmISP - SFO

1 stop25h 05mJetBlue

Thu 1/158:00 amSFO - ISP

1 stop24h 33mJetBlue

Deal found 12/27

$717

Sun 1/1112:30 pmISP - SFO

2 stops13h 17mMultiple Airlines

Thu 1/153:05 pmSFO - ISP

2 stops23h 45mMultiple Airlines

Deal found 12/27

$1,227

One-way flights from Islip to San Francisco
Search for one-way flight options from Islip to San Francisco. Find affordable one-way fares based on user searches. Data last updated December 28, 2025.

Tue 3/31:27 pmISP - SFO

1 stop13h 32mJetBlue

Deal found 12/26

$223

Mon 3/21:27 pmISP - SFO

1 stop13h 32mJetBlue

Deal found 12/26

$252

Tue 1/2012:25 pmISP - SFO

1 stop14h 04mJetBlue

Deal found 12/27

$257

Sat 3/71:27 pmISP - SFO

1 stop13h 31mJetBlue

Deal found 12/26

$258

Fri 3/61:27 pmISP - SFO

1 stop13h 31mJetBlue

Deal found 12/26

$283

Thu 2/512:25 pmISP - SFO

1 stop14h 03mJetBlue

Deal found 12/25

$377

Sun 3/81:27 pmISP - SFO

1 stop13h 31mJetBlue

Deal found 12/26

$407

Wed 1/712:25 pmISP - SFO

1 stop13h 07mJetBlue

Deal found 12/27

$442

Fri 2/131:26 pmISP - SFO

1 stop13h 33mJetBlue

Deal found 12/27

$462

Tue 1/61:10 pmISP - SFO

1 stop13h 19mJetBlue

Deal found 12/27

$512

Sun 2/151:26 pmISP - SFO

1 stop13h 33mJetBlue

Deal found 12/27

$662

Find flight deals from Islip to San Francisco

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$514 (Southwest)
One-way from	$223 (JetBlue)
Popular in	December
Cheapest in	February
Average price	$517

Provider with most accurate pricing for Islip Long Island-San Francisco flight deals.

Search Deals

Provider most trusted by Cheapflights users for Islip Long Island-San Francisco flights.

Search Deals

From Islip Long Island to San Francisco

Search Deals

One-way flight from Islip Long Island to San Francisco

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 ($11 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Islip to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Fri 3/13

5:55 pm-11:40 pm

1 stop8h 45m

San Francisco

Sun 3/15

11:25 pm-11:40 am

2 stops9h 15m

$514

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Sun 1/11

12:25 pm-10:30 am

1 stop25h 05m

San Francisco

Thu 1/15

8:00 am-11:33 am

1 stop24h 33m

$717

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Wed 1/7

12:25 pm-10:32 pm

1 stop13h 07m

San Francisco

Sat 1/10

11:42 pm-11:33 am

1 stop8h 51m

$783

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Sat 1/10

12:25 pm-12:05 am

1 stop14h 40m

San Francisco

Wed 1/14

8:26 am-7:45 pm

1 stop8h 19m

$884

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Sun 1/11

12:25 pm-12:05 am

1 stop14h 40m

San Francisco

Thu 1/15

9:42 pm-7:45 pm

2 stops19h 03m

$1,444

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Tue 3/3

1:27 pm-11:59 pm

1 stop13h 32m

$223

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Wed 3/4

1:27 pm-11:59 pm

1 stop13h 32m

$223

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Thu 3/5

1:27 pm-11:59 pm

1 stop13h 32m

$252

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Mon 3/2

1:27 pm-11:59 pm

1 stop13h 32m

$252

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Tue 1/20

12:25 pm-11:29 pm

1 stop14h 04m

$257

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/26

Showing 1-10 of 16 results

Compare providers for flights from Islip to San Francisco

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Islip to San Francisco in December.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Islip, New York-San Francisco flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Islip, New York-San Francisco flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Islip, New York-San Francisco flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Islip, New York-San Francisco flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Islip, New York-San Francisco flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Islip to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco 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

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

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

How long is the flight from Islip, New York to San Francisco?
A quick flight from Islip, New York to San Francisco can take about 8h 45m. Southwest provides one of the quickest options available for as low as $514. The distance from Islip, New York to San Francisco is about 2611 mi. Both multi-stop and nonstop flights can be found to your destination and back.
Can I find deals for flights from Islip to San Francisco that include hotel bookings?
Yes. In addition to deals on Islip to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Islip to San Francisco?
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.
Can I find deals for business class flights from Islip to San Francisco?
Yes. Cheapflights offers flight deals from Islip to San Francisco 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?
Currently, February is the cheapest month in which you can book a flight from Islip, New York to San Francisco (average of $71). Flying from Islip, New York to San Francisco 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.

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$223+ Cheap flights from Islip, NY to San Francisco (ISP - SFO)

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 3/3. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Islip to San Francisco with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Islip to San Francisco

Cheapest flights from Islip to San FranciscoExplore the most affordable flight options available from Islip to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 28, 2025.

Explore the most affordable flight options available from Islip to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 28, 2025.

Find flight deals from Islip to San Francisco

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Islip to San Francisco that are best for you.

Compare providers for flights from Islip to San Francisco

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Islip to San Francisco in December.

Best time to book a flight from Islip to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Islip with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Islip to San Francisco

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

Related info for your journey

Find useful and relevant information for your journey from Islip to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

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

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

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

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

Traveling to a place near San Francisco?

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Cheapest flights from Islip to San Francisco
Explore the most affordable flight options available from Islip to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 28, 2025.