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San Francisco Bay Area

$150+ Cheap flights from Islip, NY (ISP) to San Francisco Bay Area

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 10/11. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — SFO
Jun 23 — Jun 301
Mon 6/23
Mon 6/30
1 adult, Economy
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Cheap flight deals from Islip to San Francisco Bay Area

Keep the following information in mind while searching for Islip to San Francisco Bay Area flight deals. Data was last updated June 18, 2025.

Round-trip from

$279
(JetBlue)

One-way from

$150
(JetBlue)

Popular in

December

Cheapest in

February

Average price

$492
From Islip Long Island to San Francisco Bay Area
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One-way flight from Islip Long Island to San Francisco Bay Area
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Highest demand for flights based on searches. 5% potential increase in price ($23 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Islip to San Francisco Bay Area

Cheapest flights from Islip to San Francisco Bay Area
Explore the most affordable flight options available from Islip to San Francisco Bay Area. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 18, 2025.

This JetBlue deal was found by Cheapflights users on 6/17. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1711:35 amISP - SFO
1 stop10h 45mJetBlue
Fri 9/2610:15 pmSFO - ISP
1 stop9h 35mJetBlue
Deal found 6/17$279
This FlightHub deal was found by Cheapflights users on 6/14. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/248:21 pmISP - SFO
1 stop16h 58mFrontier
Fri 6/278:53 pmSFO - ISP
1 stop19h 43mFrontier
Deal found 6/14$325
This Southwest deal was found by Cheapflights users on 6/16. 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.
Tue 7/229:55 amISP - SFO
1 stop10h 55mSouthwest
Thu 7/249:00 pmSFO - ISP
1 stop9h 25mSouthwest
Deal found 6/16$408
This Southwest deal was found by Cheapflights users on 6/17. 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.
Mon 11/311:05 amISP - SJC
2 stops13h 00mSouthwest
Fri 11/149:30 amSJC - ISP
2 stops11h 20mSouthwest
Deal found 6/17$458
This FlightHub deal was found by Cheapflights users on 6/14. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/241:55 pmISP - SFO
3 stops24h 44mMultiple Airlines
Fri 6/278:53 pmSFO - ISP
1 stop19h 43mMultiple Airlines
Deal found 6/14$539
This KAYAK deal was found by Cheapflights users on 6/17. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/38:21 pmISP - SFO
2 stops18h 44mBreeze Airways
Wed 9/1712:39 pmSFO - ISP
1 stop22h 00mBreeze Airways
Deal found 6/17$687
This United deal was found by Cheapflights users on 6/17. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/84:33 pmISP - SJC
2 stops33h 07mMultiple Airlines
Mon 9/156:20 pmSJC - ISP
2 stops16h 04mMultiple Airlines
Deal found 6/17$842
This Southwest deal was found by Cheapflights users on 6/17. 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.
Sat 6/2111:00 amISP - OAK
2 stops13h 05mSouthwest
Sun 6/227:30 pmOAK - ISP
2 stops10h 55mSouthwest
Deal found 6/17$1,037

Cheapflights Fare Finder

Customize your flight search to find flights from Islip to San Francisco Bay Area 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 June 18, 2025.
Use the filters below to find and compare flights from Islip to San Francisco Bay Area that are best for you.

Fly from

Islip

Fly to

San Francisco Bay Area

Route

Depart

Return

Price

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Wed 9/17

11:35 am-7:20 pm

1 stop10h 45m

San Francisco

Thu 9/25

10:15 pm-10:50 am

1 stop9h 35m

$279

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Tue 7/22

9:55 am-5:50 pm

1 stop10h 55m

San Francisco

Thu 7/24

9:00 pm-9:25 am

1 stop9h 25m

$408

IslipSan Jose

ISP - SJC

ISPSJC

Islip Long Island

Mon 11/3

11:05 am-9:05 pm

2 stops13h 00m

San Jose

Fri 11/14

9:30 am-11:50 pm

2 stops11h 20m

$458

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Wed 7/2

8:21 pm-10:19 am

1 stop16h 58m

San Francisco

Sun 7/6

8:53 pm-7:52 pm

1 stop19h 59m

$610

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Mon 6/30

8:21 pm-10:19 am

1 stop16h 58m

San Francisco

Fri 7/4

12:29 pm-1:32 pm

2 stops22h 03m

$669

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Wed 9/3

8:21 pm-12:05 pm

2 stops18h 44m

San Francisco

Wed 9/17

12:39 pm-1:39 pm

1 stop22h 00m

$687

IslipSan Jose

ISP - SJC

ISPSJC

Islip Long Island

Mon 9/8

4:33 pm-10:40 pm

2 stops33h 07m

San Jose

Mon 9/15

6:20 pm-1:24 pm

2 stops16h 04m

$842

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Sat 10/11

11:35 am-7:20 pm

1 stop10h 45m

$150

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Sat 10/18

11:55 am-7:45 pm

1 stop10h 50m

$180

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Wed 7/16

8:37 pm-10:25 am

1 stop16h 48m

$181

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/15

Showing 1-10 of 14 results
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Best time to book a flight from Islip to San Francisco Bay Area

Have a flexible travel schedule? Discover the best time to fly to San Francisco Bay Area from Islip 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 Islip to San Francisco Bay Area

What is the cheapest month to book a flight from Islip, New York to San Francisco Bay Area?

Currently, January is the cheapest month in which you can book a flight from Islip, New York to San Francisco Bay Area (average of $276). Flying from Islip, New York to San Francisco Bay Area in June is currently the most expensive (average of $362). 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.

Rainfall in San Francisco Bay Area by month

Plan your trip to San Francisco Bay Area by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Francisco Bay Area ranges from 0.0 - 4.4 inches per month. January is typically the wettest month, when rainfall can reach 4.4 in. July is typically the driest time to visit San Francisco Bay Area when rainfall is around 0.0 in.

Temperature in San Francisco Bay Area by month

Plan your trip to San Francisco Bay Area by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Francisco Bay Area, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing San Francisco Bay Area

Get insights into the airlines that provide service to San Francisco Bay Area. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Francisco Bay Area. Reviews last updated June 18, 2025.
Peruse reviews from past customers who have flown with Breeze Airways, Southwest and JetBlue from Islip to San Francisco Bay Area to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Breeze Airways
8.1
Very good
182 reviews

Crew

8.8

Entertainment

6.6

Food

6.8

Overall

8.1

Boarding

8.4

Comfort

8.2

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
Breeze Airways
8.1
Very good
182 reviews
Breeze Airways
8.1
Very good
182 reviews

Crew

8.8

Entertainment

6.6

Food

6.8

Overall

8.1

Boarding

8.4

Comfort

8.2

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
Southwest
8.0
Very good
4,280 reviews
Breeze Airways
8.1
Very good
182 reviews

Crew

8.8

Entertainment

6.6

Food

6.8

Overall

8.1

Boarding

8.4

Comfort

8.2

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
JetBlue
7.3
Good
2,923 reviews
Breeze Airways
8.1
Very good
182 reviews

Crew

8.8

Entertainment

6.6

Food

6.8

Overall

8.1

Boarding

8.4

Comfort

8.2

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
Frontier
5.9
Fair
3,299 reviews
Breeze Airways
8.1
Very good
182 reviews

Crew

8.8

Entertainment

6.6

Food

6.8

Overall

8.1

Boarding

8.4

Comfort

8.2

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!

Related info for your journey

Find useful and relevant information for your journey from Islip to San Francisco Bay Area. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Islip to San Francisco Bay Area?

    Most people fly from Islip Long Island (ISP) if they book a flight from Islip to San Francisco Bay Area. Islip Long Island is conveniently located just 7.2 mi from Islip’s city center.

  • What are the cheapest airlines to fly from Islip, New York to San Francisco Bay Area one-way?

    For one-way options, check prices for JetBlue. According to our data, you can fly for as low as $150. Users have also found prices from $180 and $181 on Southwest and Frontier, respectively.

  • What are the most popular routes from Islip, New York to San Francisco Bay Area?

    Most travelers choose Islip Long Island - San Francisco, Islip Long Island - Oakland or Islip Long Island - San Jose when deciding on the best route from Islip, New York to San Francisco Bay Area.

  • Can I find deals for flights from Islip to San Francisco Bay Area that include hotel bookings?

    Yes. In addition to deals on Islip to San Francisco Bay Area flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Islip to San Francisco Bay Area?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Islip to San Francisco Bay Area.

  • Can I find deals for business class flights from Islip to San Francisco Bay Area?

    Yes. Cheapflights offers flight deals from Islip to San Francisco Bay Area 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 Islip, New York to San Francisco Bay Area?

    Currently, January is the cheapest month in which you can book a flight from Islip, New York to San Francisco Bay Area (average of $276). Flying from Islip, New York to San Francisco Bay Area in June is currently the most expensive (average of $362). 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

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