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$204+ Cheap flights from San Francisco to Islip, NY (SFO - ISP)

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 12/4. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — ISP
Nov 26 — Dec 31
Wed 11/26
Wed 12/3
1 adult, Economy
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Cheap flight deals from San Francisco to Islip

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Islip (ISP). 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 October 27, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$377
(JetBlue)

One-way from

$204
(JetBlue)

Popular in

December

Cheapest in

February

Average price

$402
Provider with most accurate pricing for San Francisco-Islip Long Island flight deals.
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Provider most trusted by Cheapflights users for San Francisco-Islip Long Island flights.
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From San Francisco to Islip Long Island
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One-way flight from San Francisco to Islip Long Island
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Highest demand for flights based on searches. 6% potential increase in price ($29 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from San Francisco to Islip

Cheapest flights from San Francisco to Islip
Explore the most affordable flight options available from San Francisco to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 27, 2025.

This JetBlue deal was found by Cheapflights users on 10/26. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/169:44 pmSFO - ISP
1 stop12h 07mJetBlue
Wed 11/191:15 pmISP - SFO
1 stop13h 16mJetBlue
Deal found 10/26$377
This Kiwi.com deal was found by Cheapflights users on 10/26. 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.
Sat 11/812:39 pmSFO - ISP
1 stop22h 00mBreeze Airways
Mon 11/108:47 pmISP - SFO
2 stops18h 18mBreeze Airways
Deal found 10/26$398
This JetBlue deal was found by Cheapflights users on 10/25. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/19:43 pmSFO - ISP
1 stop13h 09mJetBlue
Tue 11/41:15 pmISP - SFO
1 stop13h 16mJetBlue
Deal found 10/25$553
This JetBlue deal was found by Cheapflights users on 10/27. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/119:44 pmSFO - ISP
1 stop11h 34mJetBlue
Fri 11/141:55 pmISP - SFO
1 stop12h 36mJetBlue
Deal found 10/27$607
This JetBlue deal was found by Cheapflights users on 10/26. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/19:43 pmSFO - ISP
1 stop13h 09mJetBlue
Mon 11/31:55 pmISP - SFO
1 stop12h 36mJetBlue
Deal found 10/26$676
This Southwest deal was found by Cheapflights users on 10/26. 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.
Sat 11/86:25 amSFO - ISP
2 stops12h 20mSouthwest
Mon 11/105:50 amISP - SFO
2 stops12h 15mSouthwest
Deal found 10/26$722
This JetBlue deal was found by Cheapflights users on 10/27. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/319:44 pmSFO - ISP
1 stop12h 18mJetBlue
Mon 11/31:55 pmISP - SFO
1 stop12h 36mJetBlue
Deal found 10/27$732
This Southwest deal was found by Cheapflights users on 10/25. 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 12/226:45 amSFO - ISP
2 stops14h 10mSouthwest
Fri 12/265:40 amISP - SFO
1 stop13h 20mSouthwest
Deal found 10/25$733
This JetBlue deal was found by Cheapflights users on 10/26. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/299:44 pmSFO - ISP
1 stop12h 18mJetBlue
Tue 11/41:15 pmISP - SFO
1 stop13h 16mJetBlue
Deal found 10/26$794

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Francisco to Islip 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 October 27, 2025.
Use the filters below to find and compare flights from San Francisco to Islip that are best for you.

Fly from

San Francisco

Fly to

Islip

Route

Depart

Return

Price

San FranciscoIslip

SFO - ISP

SFOISP

San Francisco

Sun 11/16

9:44 pm-12:51 pm

1 stop12h 07m

Islip Long Island

Wed 11/19

1:15 pm-11:31 pm

1 stop13h 16m

$377

San FranciscoIslip

SFO - ISP

SFOISP

San Francisco

Sat 11/8

12:39 pm-1:39 pm

1 stop22h 00m

Islip Long Island

Mon 11/10

8:47 pm-12:05 pm

2 stops18h 18m

$398

San FranciscoIslip

SFO - ISP

SFOISP

San Francisco

Tue 11/11

9:44 pm-12:18 pm

1 stop11h 34m

Islip Long Island

Fri 11/14

1:55 pm-11:31 pm

1 stop12h 36m

$607

San FranciscoIslip

SFO - ISP

SFOISP

San Francisco

Mon 3/9

10:40 pm-12:20 pm

1 stop10h 40m

Islip Long Island

Wed 3/11

12:10 pm-11:33 pm

1 stop14h 23m

$607

San FranciscoIslip

SFO - ISP

SFOISP

San Francisco

Fri 4/3

10:40 pm-10:55 am

1 stop9h 15m

Islip Long Island

Tue 4/7

1:15 pm-11:33 pm

1 stop13h 18m

$721

San FranciscoIslip

SFO - ISP

SFOISP

San Francisco

Sat 11/8

6:25 am-9:45 pm

2 stops12h 20m

Islip Long Island

Mon 11/10

5:50 am-3:05 pm

2 stops12h 15m

$722

San FranciscoIslip

SFO - ISP

SFOISP

San Francisco

Mon 12/22

6:45 am-11:55 pm

2 stops14h 10m

Islip Long Island

Fri 12/26

5:40 am-4:00 pm

1 stop13h 20m

$733

San FranciscoIslip

SFO - ISP

SFOISP

San Francisco

Tue 11/25

8:55 am-11:55 pm

2 stops12h 00m

Islip Long Island

Mon 12/1

12:40 pm-9:10 pm

2 stops11h 30m

$812

San FranciscoIslip

SFO - ISP

SFOISP

San Francisco

Wed 11/12

9:44 pm-12:48 pm

1 stop12h 04m

Islip Long Island

Sun 11/16

1:55 pm-11:31 pm

1 stop12h 36m

$840

San FranciscoIslip

SFO - ISP

SFOISP

San Francisco

Thu 12/4

9:44 pm-11:05 am

1 stop10h 21m

$204

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/25

Showing 1-10 of 19 results
1
2

Compare providers for flights from San Francisco to Islip

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 San Francisco to Islip in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust 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 San Francisco-Islip, New York flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on San Francisco-Islip, New York flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from San Francisco-Islip, New York flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Francisco-Islip, New York 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 San Francisco-Islip, New York 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 San Francisco to Islip

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

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

Currently, January is the cheapest month in which you can book a flight from San Francisco to Islip, New York (average of $64). Flying from San Francisco to Islip, New York in June is currently the most expensive (average of $202). 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.

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

Find hourly flight availability from San Francisco to Islip. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 27, 2025.

A simple way to save on the total cost of your ticket is to fly from San Francisco to Islip, New York in the afternoon. If you’re flexible enough to do this you can expect to save up to 64% on your trip compared to booking a flight in the evening.

Related info for your journey

Find useful and relevant information for your journey from San Francisco to Islip. 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 San Francisco to Islip, New York?

    Airlines like JetBlue and Breeze Airways fly from San Francisco to Islip, New York in about 12h 07m. The time it takes to get you to your destination can typically vary by up to 9h 53m. There are 2611 mi between San Francisco and Islip, New York. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from San Francisco to Islip, New York round-trip?

    Currently priced at $318, Southwest will fly you from San Francisco to Islip, New York and back. In addition to Southwest, many other airlines offer competitively priced options for your trip.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from San Francisco to Islip, New York (average of $64). Flying from San Francisco to Islip, New York in June is currently the most expensive (average of $202). 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

Traveling to a place near Islip?

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