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$210+ 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 5/23. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — SFO
Mar 2 — Mar 91
Sun 3/2
Sun 3/9
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 February 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$420
(Frontier)

One-way from

$210
(Frontier)

Popular in

June

Cheapest in

January

Average price

$376
Provider with most accurate pricing for New York (NYC)-San Francisco flight deals.
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Provider most trusted by Cheapflights users for New York (NYC)-San Francisco flights.
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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. 13% potential increase in price ($68 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in February 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 February 25, 2025.

This Frontier deal was found by Cheapflights users on 2/23. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/219:10 amISP - SFO
1 stop15h 16mFrontier
Thu 4/2410:07 pmSFO - ISP
1 stop12h 11mFrontier
Deal found 2/23$420
This JetBlue deal was found by Cheapflights users on 2/24. 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 5/76:00 amISP - SFO
1 stop9h 04mJetBlue
Sun 5/118:00 amSFO - ISP
1 stop10h 08mJetBlue
Deal found 2/24$434
This Southwest deal was found by Cheapflights users on 2/24. 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 3/254:20 pmISP - SFO
2 stops10h 00mSouthwest
Tue 4/17:00 amSFO - ISP
2 stops12h 35mSouthwest
Deal found 2/24$467
This Southwest deal was found by Cheapflights users on 2/24. 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 3/259:40 amISP - SJC
2 stops15h 25mSouthwest
Tue 4/19:40 amSJC - ISP
2 stops9h 55mSouthwest
Deal found 2/24$567
This Breeze Airways deal was found by Cheapflights users on 2/25. 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 Breeze Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/282:12 pmISP - SFO
2 stops24h 36mBreeze Airways
Wed 7/912:24 pmSFO - ISP
3 stops27h 35mBreeze Airways
Deal found 2/25$977

Find flights from Islip to San Francisco Bay Area within your budget

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 February 25, 2025.

Fly from

Islip

Fly to

San Francisco Bay Area

Route

Depart

Return

Price

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Mon 4/21

9:10 am-9:26 pm

1 stop15h 16m

San Francisco

Thu 4/24

10:07 pm-1:18 pm

1 stop12h 11m

$420

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Wed 5/7

6:00 am-12:04 pm

1 stop9h 04m

San Francisco

Sun 5/11

8:00 am-9:08 pm

1 stop10h 08m

$434

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Tue 3/25

4:20 pm-11:20 pm

2 stops10h 00m

San Francisco

Tue 4/1

7:00 am-10:35 pm

2 stops12h 35m

$467

IslipSan Jose

ISP - SJC

ISPSJC

Islip Long Island

Tue 3/25

9:40 am-10:05 pm

2 stops15h 25m

San Jose

Tue 4/1

9:40 am-10:35 pm

2 stops9h 55m

$567

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Sat 6/28

2:12 pm-11:48 am

2 stops24h 36m

San Francisco

Wed 7/9

12:24 pm-6:59 pm

3 stops27h 35m

$977

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Fri 5/23

3:46 pm-10:54 pm

1 stop10h 08m

$210

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Wed 3/26

1:34 pm-11:59 pm

1 stop13h 25m

$217

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Wed 3/26

7:20 am-7:30 pm

2 stops15h 10m

$219

IslipSan Francisco

ISP - SFO

ISPSFO

Islip Long Island

Sun 8/24

7:39 pm-11:44 am

3 stops19h 05m

$477

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/25

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.

Travel insights for flights from Islip to San Francisco Bay Area

Get recent, data-driven insights about flights from Islip to San Francisco Bay Area including ideal travel times, pricing trends, and more.

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 $401). 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 February 25, 2025.
Peruse reviews from past customers who have flown with Southwest, Breeze Airways 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.
Southwest
8.1
Very good
4,374 reviews

Food

7.1

Boarding

8.2

Comfort

8.1

Overall

8.1

Entertainment

7.6

Crew

8.7

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Southwest
8.1
Very good
4,374 reviews
Southwest
8.1
Very good
4,374 reviews

Food

7.1

Boarding

8.2

Comfort

8.1

Overall

8.1

Entertainment

7.6

Crew

8.7

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Breeze Airways
8.1
Very good
150 reviews
Southwest
8.1
Very good
4,374 reviews

Food

7.1

Boarding

8.2

Comfort

8.1

Overall

8.1

Entertainment

7.6

Crew

8.7

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

JetBlue
7.4
Good
3,052 reviews
Southwest
8.1
Very good
4,374 reviews

Food

7.1

Boarding

8.2

Comfort

8.1

Overall

8.1

Entertainment

7.6

Crew

8.7

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Frontier
6.0
Okay
3,343 reviews
Southwest
8.1
Very good
4,374 reviews

Food

7.1

Boarding

8.2

Comfort

8.1

Overall

8.1

Entertainment

7.6

Crew

8.7

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

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 Frontier. According to our data, you can fly for as low as $210. Users have also found prices from $217 and $219 on JetBlue and Southwest, 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 $401). 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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Alternative routes for Islip to San Francisco Bay Area

See prices for flight routes from nearby airports that may be better suited for you.
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