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Cheap flights from Islip, New York to San Francisco from $216

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Islip, New York to San Francisco departing on 11/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Islip, New York to San Francisco

Cheap round-trip flights

Enter your travel dates to find the best prices.
JetBlue Logo
1:15 pm - 11:31 pmISP-SFO
13h 16m1 stop
JetBlue Logo
9:44 pm - 11:05 amSFO-ISP
10h 21m1 stop
$473JetBlue
Find Deal
Tue, Nov 18 - Wed, Dec 3
JetBlue Logo
1:55 pm - 11:31 pmISP-SFO
12h 36m1 stop
JetBlue Logo
9:44 pm - 12:18 pmSFO-ISP
11h 34m1 stop
$474JetBlue
Find Deal
Fri, Nov 14 - Mon, Nov 17
JetBlue Logo
4:25 pm - 11:30 pmISP-SFO
10h 05m1 stop
JetBlue Logo
9:44 pm - 11:05 amSFO-ISP
10h 21m1 stop
$518JetBlue
Find Deal
Mon, Nov 24 - Tue, Dec 2
Southwest Logo
5:55 pm - 11:25 pmISP-SFO
8h 30m1 stop
Southwest Logo
7:55 am - 10:45 pmSFO-ISP
11h 50m2 stops
$558Southwest
Find Deal
Sat, Jan 3 - Sat, Feb 28
Southwest Logo
10:20 am - 7:45 pmISP-SFO
12h 25m2 stops
Southwest Logo
7:55 am - 10:45 pmSFO-ISP
11h 50m2 stops
$563Southwest
Find Deal
Sat, Jan 3 - Sat, Feb 28
JetBlue Logo
4:25 pm - 11:30 pmISP-SFO
10h 05m1 stop
JetBlue Logo
11:00 pm - 11:05 amSFO-ISP
9h 05m1 stop
$609JetBlue
Find Deal
Mon, Nov 24 - Mon, Dec 1
JetBlue Logo
12:09 pm - 11:23 pmISP-SFO
14h 14m1 stop
JetBlue Logo
9:44 pm - 11:05 amSFO-ISP
10h 21m1 stop
$715JetBlue
Find Deal
Sat, Nov 22 - Sat, Dec 6
Breeze Airways Logo
7:36 pm - 12:02 pmISP-SFO
19h 26m3 stops
Breeze Airways Logo
12:50 pm - 8:07 pmSFO-ISP
28h 17m2 stops
$826Breeze Airways
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Sun, Nov 16 - Thu, Nov 20
Multiple Airlines Logo
9:59 am - 10:50 pmISP-SFO
15h 51m1 stop
Multiple Airlines Logo
3:00 pm - 11:04 amSFO-ISP
17h 04m2 stops
$1,332Multiple Airlines
Find Deal
Mon, Nov 17 - Fri, Nov 21
Breeze Airways Logo
8:47 pm - 12:05 pmISP-SFO
18h 18m2 stops
Breeze Airways Logo
12:47 pm - 8:05 pmSFO-ISP
28h 18m3 stops
$1,647Breeze Airways
Find Deal
Mon, Nov 17 - Fri, Nov 21

JetBlue flights from Islip, New York to San Francisco

Our best JetBlue deals on Islip, New York to San Francisco flight tickets
JetBlue
Nov 12
ISP1:15 pmIslip Long Island
13h 16m
1 stop
SFO11:31 pmSan Francisco
Nov 18
SFO9:44 pmSan Francisco
11h 34m
1 stop
ISP12:18 pmIslip Long Island
$469
Find similar
JetBlue
Nov 18
ISP1:15 pmIslip Long Island
13h 16m
1 stop
SFO11:31 pmSan Francisco
Dec 3
SFO9:44 pmSan Francisco
10h 21m
1 stop
ISP11:05 amIslip Long Island
$473
Find similar
JetBlue
Nov 14
ISP1:55 pmIslip Long Island
12h 36m
1 stop
SFO11:31 pmSan Francisco
Nov 17
SFO9:44 pmSan Francisco
11h 34m
1 stop
ISP12:18 pmIslip Long Island
$474
Find similar

Southwest flights from Islip, New York to San Francisco

Our best Southwest deals on Islip, New York to San Francisco flight tickets
Southwest
Jan 3
ISP5:55 pmIslip Long Island
8h 30m
1 stop
SFO11:25 pmSan Francisco
Feb 28
SFO7:55 amSan Francisco
11h 50m
2 stops
ISP10:45 pmIslip Long Island
$558
Find similar
Southwest
Jan 3
ISP10:20 amIslip Long Island
12h 25m
2 stops
SFO7:45 pmSan Francisco
Feb 28
SFO7:55 amSan Francisco
11h 50m
2 stops
ISP10:45 pmIslip Long Island
$563
Find similar
Southwest
Nov 8
ISP11:55 amIslip Long Island
11h 25m
2 stops
SFO8:20 pmSan Francisco
Nov 15
SFO9:05 amSan Francisco
9h 40m
2 stops
ISP9:45 pmIslip Long Island
$782
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Islip, New York to San Francisco 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, momondo users made 832,500 searches. Data last updated November 3, 2025.
Use the filters below to find and compare flights from Islip, New York to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Tue 11/18

1:15 pm-11:31 pm

1 stop13h 16m

San Francisco

Wed 12/3

9:44 pm-11:05 am

1 stop10h 21m

$473

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Fri 11/14

1:55 pm-11:31 pm

1 stop12h 36m

San Francisco

Mon 11/17

9:44 pm-12:18 pm

1 stop11h 34m

$474

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Mon 11/24

4:25 pm-11:30 pm

1 stop10h 05m

San Francisco

Tue 12/2

9:44 pm-11:05 am

1 stop10h 21m

$518

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Sat 1/3

5:55 pm-11:25 pm

1 stop8h 30m

San Francisco

Sat 2/28

7:55 am-10:45 pm

2 stops11h 50m

$558

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Sat 1/3

10:20 am-7:45 pm

2 stops12h 25m

San Francisco

Sat 2/28

7:55 am-10:45 pm

2 stops11h 50m

$563

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Mon 11/24

4:25 pm-11:30 pm

1 stop10h 05m

San Francisco

Mon 12/1

11:00 pm-11:05 am

1 stop9h 05m

$609

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Sat 11/22

12:09 pm-11:23 pm

1 stop14h 14m

San Francisco

Sat 12/6

9:44 pm-11:05 am

1 stop10h 21m

$715

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Sun 11/16

7:36 pm-12:02 pm

3 stops19h 26m

San Francisco

Thu 11/20

12:50 pm-8:07 pm

2 stops28h 17m

$826

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Mon 11/17

9:59 am-10:50 pm

1 stop15h 51m

San Francisco

Fri 11/21

3:00 pm-11:04 am

2 stops17h 04m

$1,332

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Mon 11/17

8:47 pm-12:05 pm

2 stops18h 18m

San Francisco

Fri 11/21

12:47 pm-8:05 pm

3 stops28h 18m

$1,647

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Francisco from

How to get the cheapest flight ticket from Islip, New York to San Francisco

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to San Francisco?

The cheapest day to depart from Islip, New York to San Francisco is on a Thursday when prices can be found for as low as $416. The most expensive day to fly to San Francisco is Sunday, with ticket prices averaging around $586.

What is the cheapest time of day to depart on your flight to San Francisco?

Our data shows that the cheapest Islip, New York to San Francisco flights are usually those with departure times in the evening. Our users have found flights to San Francisco in the evening for as low as $390. Flights in the afternoon are often more expensive with an average ticket price of $509.

When to book flights from Islip, New York to San Francisco

Are you open to changing your travel dates? Check out the ideal times to fly from Islip, New York to San Francisco according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Islip, New York to San Francisco (ISP to SFO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Islip, New York to San Francisco

Direct flights

None
There are no direct flights from Islip, New York to San Francisco. There are no popular flight routes from Islip, New York to San Francisco.
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  • How far is Islip Long Island to San Francisco by plane?

    A flight from Islip Long Island to San Francisco will travel around 2603.7 mi. Flights usually cover this in 8h 30m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Islip Long Island Airport to San Francisco Airport?

    Prices for flights from Islip Long Island Airport to San Francisco Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Islip Long Island Airport to San Francisco Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Islip Long Island Airport to San Francisco Airport.

  • What documentation or ID do you need to fly to San Francisco Airport?

    The required travel and health documents for your San Francisco Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San Francisco Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Santa Cruz
Carmel-by-the-Sea
Modesto
Sonoma
Bodega Bay
Roseville
Calistoga
Hayward
Big Sur
Santa Clara
Daly City
Fremont
Berkeley
Vallejo
Walnut Creek
Half Moon Bay
Salinas
Turlock
Livermore
Pacific Grove

Why use momondo?

Why should I use momondo to find a flight deal from Islip to San Francisco?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Islip to San Francisco for you.

Can I find flights from Islip to San Francisco with flexible booking policies on momondo?

All flight searches from Islip to San Francisco on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Islip to San Francisco?

Once all potential Islip to San Francisco flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Islip to San Francisco right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Islip to San Francisco flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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