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Cheap flights from Islip, New York to San Francisco from $118

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 12/22. 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.
Southwest Logo
6:00 am - 1:25 pmISP-SFO
10h 25m1 stop
Southwest Logo
9:50 am - 9:55 pmSFO-ISP
9h 05m2 stops
$398Southwest
Find Deal
jue., ene. 29 - lun., feb. 2
Southwest Logo
6:00 am - 4:55 pmISP-SFO
13h 55m2 stops
Southwest Logo
9:50 am - 9:55 pmSFO-ISP
9h 05m2 stops
$403Southwest
Find Deal
jue., ene. 29 - lun., feb. 2
Southwest Logo
4:30 pm - 11:15 pmISP-SFO
9h 45m1 stop
Southwest Logo
9:15 pm - 11:50 amSFO-ISP
11h 35m1 stop
$472Southwest
Find Deal
jue., abr. 23 - dom., abr. 26
Southwest Logo
4:30 pm - 12:05 amISP-SFO
10h 35m2 stops
Southwest Logo
9:15 pm - 11:50 amSFO-ISP
11h 35m1 stop
$478Southwest
Find Deal
jue., abr. 23 - dom., abr. 26
Southwest Logo
4:30 pm - 12:05 amISP-SFO
10h 35m2 stops
Southwest Logo
11:25 pm - 11:50 amSFO-ISP
9h 25m2 stops
$487Southwest
Find Deal
jue., abr. 23 - dom., abr. 26
JetBlue Logo
12:10 pm - 11:33 pmISP-SFO
14h 23m1 stop
JetBlue Logo
10:40 pm - 11:25 amSFO-ISP
9h 45m1 stop
$650JetBlue
Find Deal
vie., mar. 20 - dom., mar. 22
JetBlue Logo
12:10 pm - 11:33 pmISP-SFO
14h 23m1 stop
JetBlue Logo
10:40 pm - 11:25 amSFO-ISP
9h 45m1 stop
$700JetBlue
Find Deal
jue., mar. 19 - dom., mar. 22
JetBlue Logo
12:10 pm - 11:33 pmISP-SFO
14h 23m1 stop
JetBlue Logo
10:40 pm - 11:25 amSFO-ISP
9h 45m1 stop
$755JetBlue
Find Deal
sáb., mar. 14 - dom., mar. 22
Breeze Airways Logo
8:25 pm - 12:05 pmISP-SFO
18h 40m2 stops
Breeze Airways Logo
12:50 pm - 8:07 pmSFO-ISP
28h 17m2 stops
$1,469Breeze Airways
Find Deal
mié., nov. 26 - dom., nov. 30
Breeze Airways Logo
8:25 pm - 12:05 pmISP-SFO
18h 40m2 stops
Breeze Airways Logo
12:50 pm - 10:28 amSFO-ISP
42h 38m3 stops
$1,701Breeze Airways
Find Deal
mié., nov. 26 - dom., nov. 30

Southwest flights from Islip, New York to San Francisco

Our best Southwest deals on Islip, New York to San Francisco flight tickets
Southwest
Jan 29
ISP6:00 amIslip Long Island
10h 25m
1 stop
SFO1:25 pmSan Francisco
Feb 2
SFO9:30 pmSan Francisco
11h 25m
1 stop
ISP11:55 amIslip Long Island
$398
Find similar
Southwest
Jan 29
ISP6:00 amIslip Long Island
13h 55m
2 stops
SFO4:55 pmSan Francisco
Feb 2
SFO9:50 amSan Francisco
9h 05m
2 stops
ISP9:55 pmIslip Long Island
$403
Find similar
Southwest
Apr 23
ISP4:30 pmIslip Long Island
9h 45m
1 stop
SFO11:15 pmSan Francisco
Apr 26
SFO9:15 pmSan Francisco
11h 35m
1 stop
ISP11:50 amIslip Long Island
$472
Find similar

Breeze Airways flights from Islip, New York to San Francisco

Our best Breeze Airways deals on Islip, New York to San Francisco flight tickets
Breeze Airways
Nov 16
ISP7:36 pmIslip Long Island
19h 26m
3 stops
SFO12:02 pmSan Francisco
Nov 19
SFO12:39 pmSan Francisco
22h 00m
1 stop
ISP1:39 pmIslip Long Island
$963
Find similar
Breeze Airways
Nov 17
ISP8:47 pmIslip Long Island
18h 18m
2 stops
SFO12:05 pmSan Francisco
Nov 19
SFO12:39 pmSan Francisco
22h 00m
1 stop
ISP1:39 pmIslip Long Island
$965
Find similar
Breeze Airways
Nov 17
ISP8:47 pmIslip Long Island
18h 18m
2 stops
SFO12:05 pmSan Francisco
Nov 19
SFO12:39 pmSan Francisco
27h 17m
3 stops
ISP6:56 pmIslip Long Island
$986
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 noviembre 13, 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

jue. 1/29

6:00 am-1:25 pm

1 stop10h 25m

San Francisco

lun. 2/2

9:50 am-9:55 pm

2 stops9h 05m

$398

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

jue. 1/29

6:00 am-4:55 pm

2 stops13h 55m

San Francisco

lun. 2/2

9:50 am-9:55 pm

2 stops9h 05m

$403

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

jue. 4/23

4:30 pm-11:15 pm

1 stop9h 45m

San Francisco

dom. 4/26

9:15 pm-11:50 am

1 stop11h 35m

$472

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

jue. 4/23

4:30 pm-12:05 am

2 stops10h 35m

San Francisco

dom. 4/26

9:15 pm-11:50 am

1 stop11h 35m

$478

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

jue. 4/23

4:30 pm-12:05 am

2 stops10h 35m

San Francisco

dom. 4/26

11:25 pm-11:50 am

2 stops9h 25m

$487

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

vie. 3/20

12:10 pm-11:33 pm

1 stop14h 23m

San Francisco

dom. 3/22

10:40 pm-11:25 am

1 stop9h 45m

$650

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

jue. 3/19

12:10 pm-11:33 pm

1 stop14h 23m

San Francisco

dom. 3/22

10:40 pm-11:25 am

1 stop9h 45m

$700

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

sáb. 3/14

12:10 pm-11:33 pm

1 stop14h 23m

San Francisco

dom. 3/22

10:40 pm-11:25 am

1 stop9h 45m

$755

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

mié. 11/26

8:25 pm-12:05 pm

2 stops18h 40m

San Francisco

dom. 11/30

12:50 pm-8:07 pm

2 stops28h 17m

$1,469

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

mié. 11/26

8:25 pm-12:05 pm

2 stops18h 40m

San Francisco

dom. 11/30

12:50 pm-10:28 am

3 stops42h 38m

$1,701

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 $415. The most expensive day to fly to San Francisco is Sunday, with ticket prices averaging around $587.

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 $510.

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.
Search flight deals

  • 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 9h 45m, 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
Livermore
Turlock
South San Francisco

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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sáb. 12/13
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