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Cheap flights from Islip, New York to San Francisco from $175

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 1/20. 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
9:15 am - 9:50 pmSFO-ISP
9h 35m2 stops
$385Southwest
Find Deal
mié., ene. 7 - sáb., ene. 10
Southwest Logo
6:00 am - 4:55 pmISP-SFO
13h 55m2 stops
Southwest Logo
7:55 am - 9:50 pmSFO-ISP
10h 55m2 stops
$390Southwest
Find Deal
mié., ene. 7 - sáb., ene. 10
Southwest Logo
6:00 am - 1:25 pmISP-SFO
10h 25m1 stop
Southwest Logo
7:50 am - 10:20 pmSFO-ISP
11h 30m2 stops
$412Southwest
Find Deal
mié., ene. 7 - dom., ene. 11
Southwest Logo
12:40 pm - 10:20 pmISP-SFO
12h 40m2 stops
Southwest Logo
7:35 am - 10:20 pmSFO-ISP
11h 45m2 stops
$417Southwest
Find Deal
mié., ene. 7 - dom., ene. 11
Southwest Logo
4:05 pm - 9:55 pmISP-SFO
8h 50m1 stop
Southwest Logo
9:30 pm - 11:55 amSFO-ISP
11h 25m1 stop
$425Southwest
Find Deal
vie., ene. 16 - lun., ene. 19
Southwest Logo
11:50 am - 8:15 pmISP-SFO
11h 25m2 stops
Southwest Logo
9:30 pm - 11:55 amSFO-ISP
11h 25m1 stop
$431Southwest
Find Deal
vie., ene. 16 - lun., ene. 19
Southwest Logo
4:05 pm - 9:55 pmISP-SFO
8h 50m1 stop
Southwest Logo
7:35 am - 10:20 pmSFO-ISP
11h 45m2 stops
$452Southwest
Find Deal
dom., ene. 11 - vie., ene. 16
Southwest Logo
5:55 am - 3:45 pmISP-SFO
12h 50m2 stops
Southwest Logo
7:50 am - 10:20 pmSFO-ISP
11h 30m2 stops
$457Southwest
Find Deal
dom., ene. 11 - vie., ene. 16
Southwest Logo
5:40 am - 1:20 pmISP-SFO
10h 40m1 stop
Southwest Logo
9:10 am - 11:50 pmSFO-ISP
11h 40m2 stops
$461Southwest
Find Deal
jue., dic. 11 - dom., dic. 14
Southwest Logo
3:55 pm - 10:30 pmISP-SFO
9h 35m2 stops
Southwest Logo
9:10 am - 11:50 pmSFO-ISP
11h 40m2 stops
$466Southwest
Find Deal
jue., dic. 11 - dom., dic. 14

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
Dec 12
ISP8:47 pmIslip Long Island
18h 07m
2 stops
SFO11:54 amSan Francisco
Dec 14
SFO12:50 pmSan Francisco
28h 17m
2 stops
ISP8:07 pmIslip Long Island
$708
Find similar
Breeze Airways
Dec 11
ISP10:38 amIslip Long Island
28h 24m
3 stops
SFO12:02 pmSan Francisco
Dec 14
SFO12:50 pmSan Francisco
28h 17m
2 stops
ISP8:07 pmIslip Long Island
$769
Find similar
Breeze Airways
Dec 19
ISP8:47 pmIslip Long Island
18h 07m
2 stops
SFO11:54 amSan Francisco
Dec 24
SFO12:39 pmSan Francisco
18h 19m
3 stops
ISP9:58 amIslip Long Island
$1,119
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 7
ISP6:00 amIslip Long Island
10h 25m
1 stop
SFO1:25 pmSan Francisco
Jan 10
SFO9:15 amSan Francisco
9h 35m
2 stops
ISP9:50 pmIslip Long Island
$385
Find similar
Southwest
Jan 7
ISP6:00 amIslip Long Island
13h 55m
2 stops
SFO4:55 pmSan Francisco
Jan 10
SFO7:55 amSan Francisco
10h 55m
2 stops
ISP9:50 pmIslip Long Island
$390
Find similar
Southwest
Jan 7
ISP6:00 amIslip Long Island
10h 25m
1 stop
SFO1:25 pmSan Francisco
Jan 11
SFO7:50 amSan Francisco
11h 30m
2 stops
ISP10:20 pmIslip Long Island
$412
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 20, 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

mié. 1/7

6:00 am-1:25 pm

1 stop10h 25m

San Francisco

sáb. 1/10

9:15 am-9:50 pm

2 stops9h 35m

$385

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

mié. 1/7

6:00 am-4:55 pm

2 stops13h 55m

San Francisco

sáb. 1/10

7:55 am-9:50 pm

2 stops10h 55m

$390

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

mié. 1/7

6:00 am-1:25 pm

1 stop10h 25m

San Francisco

dom. 1/11

7:50 am-10:20 pm

2 stops11h 30m

$412

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

mié. 1/7

12:40 pm-10:20 pm

2 stops12h 40m

San Francisco

dom. 1/11

7:35 am-10:20 pm

2 stops11h 45m

$417

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

vie. 1/16

4:05 pm-9:55 pm

1 stop8h 50m

San Francisco

lun. 1/19

9:30 pm-11:55 am

1 stop11h 25m

$425

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

vie. 1/16

11:50 am-8:15 pm

2 stops11h 25m

San Francisco

lun. 1/19

9:30 pm-11:55 am

1 stop11h 25m

$431

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

dom. 1/11

4:05 pm-9:55 pm

1 stop8h 50m

San Francisco

vie. 1/16

7:35 am-10:20 pm

2 stops11h 45m

$452

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

dom. 1/11

5:55 am-3:45 pm

2 stops12h 50m

San Francisco

vie. 1/16

7:50 am-10:20 pm

2 stops11h 30m

$457

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

jue. 12/11

5:40 am-1:20 pm

1 stop10h 40m

San Francisco

dom. 12/14

9:10 am-11:50 pm

2 stops11h 40m

$461

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

jue. 12/11

3:55 pm-10:30 pm

2 stops9h 35m

San Francisco

dom. 12/14

9:10 am-11:50 pm

2 stops11h 40m

$466

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 8h 50m, 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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