ISP - SFO

$197 Find Cheap Flights from Islip to San Francisco

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Islip to San Francisco departing on 1/18. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to San Francisco

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Islip to San Francisco, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Islip to San Francisco, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$398
Southwest
Tue 2/3Sat 2/7
ISP - SFO • 1 stop
Cheapest one-way
$224
Southwest
Sun 1/18
ISP - SFO • 1 stop
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to San Francisco!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Islip to San Francisco (ISP-SFO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Islip to San Francisco that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Islip to San Francisco

Tue, Feb 3 - Sat, Feb 7
Southwest Logo
6:00 am - 1:25 pm
ISP
-
SFO
10h 25m1 stop
Southwest Logo
7:25 am - 9:50 pm
SFO
-
ISP
11h 25m2 stops
$398Southwest
Tue, Feb 3 - Sat, Feb 7
Southwest Logo
12:40 pm - 9:20 pm
ISP
-
SFO
11h 40m2 stops
Southwest Logo
7:25 am - 9:50 pm
SFO
-
ISP
11h 25m2 stops
$403Southwest
Wed, Jun 10 - Sat, Jun 13
Southwest Logo
2:55 pm - 7:50 pm
ISP
-
SFO
7h 55m1 stop
Southwest Logo
11:40 pm - 2:55 pm
SFO
-
ISP
12h 15m2 stops
$472Southwest
Wed, Jun 10 - Sat, Jun 13
Southwest Logo
2:55 pm - 10:25 pm
ISP
-
SFO
10h 30m2 stops
Southwest Logo
11:40 pm - 2:55 pm
SFO
-
ISP
12h 15m2 stops
$477Southwest
Fri, Jan 9 - Sun, Jan 11
Southwest Logo
6:00 am - 1:25 pm
ISP
-
SFO
10h 25m1 stop
Southwest Logo
9:30 pm - 11:55 am
SFO
-
ISP
11h 25m1 stop
$488Southwest
Fri, Jan 9 - Sun, Jan 11
Southwest Logo
6:00 am - 1:25 pm
ISP
-
SFO
10h 25m1 stop
Southwest Logo
6:25 am - 10:20 pm
SFO
-
ISP
12h 55m2 stops
$494Southwest
Wed, Jun 10 - Sun, Jun 14
Southwest Logo
12:25 pm - 7:50 pm
ISP
-
SFO
10h 25m1 stop
Southwest Logo
9:10 pm - 8:20 am
SFO
-
ISP
8h 10m1 stop
$518Southwest
Wed, Jun 10 - Sun, Jun 14
Southwest Logo
4:40 pm - 11:25 pm
ISP
-
SFO
9h 45m2 stops
Southwest Logo
9:10 pm - 8:20 am
SFO
-
ISP
8h 10m1 stop
$523Southwest
Fri, Jan 9 - Sun, Jan 11
JetBlue Logo
10:00 am - 12:22 am
ISP
-
SFO
17h 22m2 stops
JetBlue Logo
7:00 am - 8:52 am
SFO
-
ISP
22h 52m2 stops
$539JetBlue
Wed, Jun 10 - Sun, Jun 14
Southwest Logo
4:40 pm - 11:25 pm
ISP
-
SFO
9h 45m2 stops
Southwest Logo
11:40 pm - 11:50 am
SFO
-
ISP
9h 10m2 stops
$597Southwest
Booking Insights

KAYAK's insights & trends for Islip to San Francisco flights

Get data-powered insights and trends into flights from Islip to San Francisco to help you find the cheapest flights, the best time to fly and much more.

What is the most popular layover airport when flying from Islip to San Francisco?

Percentage of 1-stop round-trip flights from Islip to San Francisco chosen by KAYAK users via each layover airport in the last 12 months (only includes trips with the same layover airport on both legs).

Baltimore (BWI) is the top choice – 33% of KAYAK users who clicked on 1-stop flights from Islip to San Francisco picked an itinerary connecting there.

What is the cheapest layover airport when flying from Islip to San Francisco?

Average round-trip price for 1-stop flights from Islip to San Francisco clicked by KAYAK users in the last 12 months (only includes trips with the same layover airport on both legs).

Flights via Orlando (MCO) offer the most affordable fares, with an average round-trip price of $290.

Which layover airport offers the shortest total travel time from Islip to San Francisco?

Shortest average total travel time for 1-stop one-way flights from Islip to San Francisco via different layover airports, based on KAYAK user data from the last 12 months.

Consider flying via Boston (BOS) for the shortest journey. The average one-way travel time for flights connecting there is 9h 44m.

Which layover airport has the quickest connection when flying from Islip to San Francisco?

Average layover duration at different layover airports for 1-stop one-way flights from Islip to San Francisco, based on KAYAK user data from the last 12 months.

If you prefer a quick connection, Boston (BOS) often has the shortest layovers from Islip to San Francisco, with an average of 2h 51m.

Find deals

Good to know

Cheapest flight$224
Flight from Islip to San Francisco

When to book flights from Islip to San Francisco

Are your dates flexible? Find out the best times to travel from Islip to San Francisco based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Islip to San Francisco

  • What is the cheapest flight from Islip to San Francisco?

    In the last 3 days, the lowest price for a flight from Islip to San Francisco was $224 for a one-way ticket and $398 for a round-trip.

  • Do I need a passport to fly between Islip and San Francisco?

    A passport is not required to fly from Islip to San Francisco.

  • Which airports will I be using when flying from Islip to San Francisco?

    Islip airport is called Islip Long Island and the only airport in San Francisco is San Francisco.

  • Which aircraft models fly most regularly from Islip to San Francisco?

    We unfortunately don’t have that data for this specific route.

  • How does KAYAK find such low prices on flights from Islip to San Francisco?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Islip to San Francisco.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Islip to San Francisco?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Francisco from Islip is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Islip to San Francisco?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Francisco with an airline and back to Islip with another airline. Booking your flights between Islip and SFO can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Islip to San Francisco?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Francisco from Islip up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

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

Information on your arrival and departure airports

Islip (ISP)
San Francisco (SFO)