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Islip

$202+ 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 1/7. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — ISP
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap 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 December 12, 2025.

This Southwest deal was found by Cheapflights users on 12/10. 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.
Thu 12/258:20 amSFO - ISP
2 stops10h 45mSouthwest
Sun 1/45:40 amISP - SFO
2 stops12h 05mSouthwest
Deal found 12/10$637
This Expedia deal was found by Cheapflights users on 12/10. 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.
Fri 12/2611:54 pmSFO - ISP
1 stop16h 01mJetBlue
Tue 12/307:40 pmISP - SFO
1 stop16h 49mJetBlue
Deal found 12/10$878
This Kiwi.com deal was found by Cheapflights users on 12/10. 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.
Fri 12/264:06 pmSFO - ISP
2 stops28h 53mMultiple Airlines
Tue 12/302:19 pmISP - SFO
1 stop24h 35mMultiple Airlines
Deal found 12/10$937
This Booking.com deal was found by Cheapflights users on 12/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2512:50 pmSFO - ISP
2 stops28h 17mBreeze Airways
Sun 1/410:38 amISP - SFO
3 stops28h 24mBreeze Airways
Deal found 12/10$1,084
This Booking.com deal was found by Cheapflights users on 12/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2612:47 pmSFO - ISP
3 stops21h 52mBreeze Airways
Tue 12/302:19 pmISP - SFO
1 stop24h 35mBreeze Airways
Deal found 12/10$1,158
This Expedia deal was found by Cheapflights users on 12/10. 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.
Fri 12/129:44 pmSFO - ISP
1 stop10h 21mJetBlue
Wed 12/1711:50 amISP - SFO
1 stop14h 45mJetBlue
Deal found 12/10$1,335

Find 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 December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$439
(JetBlue)

One-way from

$202
(JetBlue)

Popular in

December

Cheapest in

February

Average price

$494
Provider with most accurate pricing for San Francisco-Islip Long Island flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Francisco-Islip Long Island flights.
Search Deals
From San Francisco to Islip Long Island
Search Deals
One-way flight from San Francisco to Islip Long Island
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

 
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 December 12, 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

Sat 1/10

11:42 pm-11:33 am

1 stop8h 51m

Islip Long Island

Tue 1/13

12:25 pm-11:29 pm

1 stop14h 04m

$439

San FranciscoIslip

SFO - ISP

SFOISP

San Francisco

Sat 1/10

11:42 pm-11:33 am

1 stop8h 51m

Islip Long Island

Wed 1/14

12:25 pm-11:29 pm

1 stop14h 04m

$603

San FranciscoIslip

SFO - ISP

SFOISP

San Francisco

Thu 12/25

8:20 am-10:05 pm

2 stops10h 45m

Islip Long Island

Sun 1/4

5:40 am-2:45 pm

2 stops12h 05m

$637

San FranciscoIslip

SFO - ISP

SFOISP

San Francisco

Fri 12/26

11:54 pm-6:55 pm

1 stop16h 01m

Islip Long Island

Tue 12/30

7:40 pm-9:29 am

1 stop16h 49m

$878

San FranciscoIslip

SFO - ISP

SFOISP

San Francisco

Fri 12/26

4:06 pm-11:59 pm

2 stops28h 53m

Islip Long Island

Tue 12/30

2:19 pm-11:54 am

1 stop24h 35m

$937

San FranciscoIslip

SFO - ISP

SFOISP

San Francisco

Thu 12/25

12:50 pm-8:07 pm

2 stops28h 17m

Islip Long Island

Sun 1/4

10:38 am-12:02 pm

3 stops28h 24m

$1,084

San FranciscoIslip

SFO - ISP

SFOISP

San Francisco

Fri 12/26

12:47 pm-1:39 pm

3 stops21h 52m

Islip Long Island

Tue 12/30

2:19 pm-11:54 am

1 stop24h 35m

$1,158

San FranciscoIslip

SFO - ISP

SFOISP

San Francisco

Wed 1/7

11:42 pm-11:33 am

1 stop8h 51m

$202

San FranciscoIslip

SFO - ISP

SFOISP

San Francisco

Fri 1/9

11:42 pm-11:33 am

1 stop8h 51m

$223

San FranciscoIslip

SFO - ISP

SFOISP

San Francisco

Thu 1/8

11:42 pm-11:33 am

1 stop8h 51m

$223

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Showing 1-10 of 15 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 December.
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 December 12, 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 Southwest fly from San Francisco to Islip, New York in about 8h 51m. The time it takes to get you to your destination can typically vary by up to 1h 54m. There are 2611 mi between San Francisco and Islip, New York. This flight may include one or multiple stops.

  • 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?

Book flights to Islip if you plan to visit one of these locations
Riverhead

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