$182+ Cheap flights from San Francisco to Islip, NY (SFO - ISP)
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 8/12. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — ISP
Jul 14 — Jul 211
Round-trip
1 adult, Economy
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Find cheap flights from San Francisco to Islip with Cheapflights
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Cheapest flights from San Francisco to IslipExplore the most affordable flight options available from San Francisco to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 14, 2026.
Explore the most affordable flight options available from San Francisco to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 14, 2026.
This Southwest deal was found by Cheapflights users on 6/11. 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 9/110:30 pm
SFO
- ISP
1 stop8h 45m
Southwest
Tue 9/86:05 am
ISP
- SFO
1 stop8h 30m
Southwest
Deal found 6/11![Southwest logo]()
$300
This Southwest deal was found by Cheapflights users on 6/11. 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 8/316:45 am
SFO
- ISP
2 stops12h 20m
Southwest
Tue 9/86:05 am
ISP
- SFO
1 stop8h 30m
Southwest
Deal found 6/11![Southwest logo]()
$337
This Southwest deal was found by Cheapflights users on 6/13. 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.
Wed 8/1910:30 pm
SFO
- ISP
1 stop8h 10m
Southwest
Tue 8/256:05 am
ISP
- SFO
1 stop8h 30m
Southwest
Deal found 6/13![Southwest logo]()
$372
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/910:30 pm
SFO
- ISP
1 stop8h 10m
Southwest
Mon 9/144:05 pm
ISP
- SFO
2 stops9h 45m
Southwest
Deal found 6/14![Southwest logo]()
$420
This Southwest deal was found by Cheapflights users on 6/12. 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.
Thu 9/1710:30 pm
SFO
- ISP
1 stop8h 10m
Southwest
Sun 9/206:20 am
ISP
- SFO
1 stop9h 50m
Southwest
Deal found 6/12![Southwest logo]()
$424
Best flights from San Francisco to IslipDiscover carefully curated flight deals from San Francisco to Islip that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 14, 2026.
Discover carefully curated flight deals from San Francisco to Islip that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 14, 2026.
This Southwest deal was found by Cheapflights users on 6/11. 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 8/3110:30 pm
SFO
- ISP
1 stop8h 45m
Southwest
Tue 9/86:05 am
ISP
- SFO
1 stop8h 30m
Southwest
Deal found 6/11![Southwest logo]()
$384
This Southwest deal was found by Cheapflights users on 6/11. 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 9/16:50 am
SFO
- ISP
2 stops11h 15m
Southwest
Tue 9/83:20 pm
ISP
- SFO
2 stops10h 45m
Southwest
Deal found 6/11![Southwest logo]()
$394
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/910:30 pm
SFO
- ISP
1 stop8h 10m
Southwest
Mon 9/144:05 pm
ISP
- SFO
2 stops9h 45m
Southwest
Deal found 6/14![Southwest logo]()
$420
This Southwest deal was found by Cheapflights users on 6/12. 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.
Thu 9/177:45 pm
SFO
- ISP
2 stops10h 55m
Southwest
Sun 9/206:20 am
ISP
- SFO
1 stop9h 50m
Southwest
Deal found 6/12![Southwest logo]()
$429
This Southwest deal was found by Cheapflights users on 6/12. 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.
Fri 7/249:25 am
SFO
- ISP
2 stops11h 15m
Southwest
Wed 7/292:55 pm
ISP
- SFO
2 stops10h 35m
Southwest
Deal found 6/12![Southwest logo]()
$477
This Southwest deal was found by Cheapflights users on 6/11. 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 7/1111:40 pm
SFO
- ISP
2 stops12h 15m
Southwest
Sat 7/183:30 pm
ISP
- SFO
2 stops11h 05m
Southwest
Deal found 6/11![Southwest logo]()
$477
This Southwest deal was found by Cheapflights users on 6/9. 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 7/2510:10 am
SFO
- ISP
2 stops10h 05m
Southwest
Sat 8/13:30 pm
ISP
- SFO
2 stops11h 05m
Southwest
Deal found 6/9![Southwest logo]()
$487
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/2310:10 am
SFO
- ISP
2 stops10h 30m
Southwest
Wed 7/2912:25 pm
ISP
- SFO
1 stop10h 25m
Southwest
Deal found 6/14![Southwest logo]()
$494
Last-minute flights from San Francisco to IslipDiscover last-minute flight deals from San Francisco to Islip. Data last updated June 14, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to Islip. Data last updated June 14, 2026 and is based on user searches.
This Priceline 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/78:35 pm
SFO
- ISP
1 stop14h 37m
JetBlue
Tue 7/144:58 pm
ISP
- SFO
1 stop9h 53m
JetBlue
Deal found 6/14![JetBlue logo]()
$480
This Southwest deal was found by Cheapflights users on 6/11. 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 7/119:30 pm
SFO
- ISP
1 stop11h 15m
Southwest
Sat 7/183:30 pm
ISP
- SFO
2 stops11h 05m
Southwest
Deal found 6/11![Southwest logo]()
$478
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/129:10 pm
SFO
- ISP
1 stop8h 10m
Southwest
Sat 7/183:30 pm
ISP
- SFO
2 stops11h 05m
Southwest
Deal found 6/14![Southwest logo]()
$508
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/229:10 pm
SFO
- ISP
1 stop8h 10m
Southwest
Tue 7/284:40 pm
ISP
- SFO
2 stops9h 40m
Southwest
Deal found 6/14![Southwest logo]()
$482
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/2310:10 am
SFO
- ISP
2 stops10h 30m
Southwest
Wed 7/2912:25 pm
ISP
- SFO
1 stop10h 25m
Southwest
Deal found 6/14![Southwest logo]()
$494
This Southwest deal was found by Cheapflights users on 6/11. 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.
Fri 7/249:25 am
SFO
- ISP
2 stops11h 15m
Southwest
Wed 7/292:55 pm
ISP
- SFO
2 stops10h 35m
Southwest
Deal found 6/11![Southwest logo]()
$441
This Southwest deal was found by Cheapflights users on 6/9. 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 7/2510:10 am
SFO
- ISP
2 stops10h 05m
Southwest
Sat 8/13:30 pm
ISP
- SFO
2 stops11h 05m
Southwest
Deal found 6/9![Southwest logo]()
$487
One-way flights from San Francisco to IslipSearch for one-way flight options from San Francisco to Islip. Find affordable one-way fares based on user searches. Data last updated June 14, 2026.
Search for one-way flight options from San Francisco to Islip. Find affordable one-way fares based on user searches. Data last updated June 14, 2026.
This Southwest deal was found by Cheapflights users on 6/13. 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.
Wed 8/1210:30 pm
SFO
- ISP
1 stop8h 10m
Southwest
Deal found 6/13![Southwest logo]()
$182
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/229:10 pm
SFO
- ISP
1 stop8h 10m
Southwest
Deal found 6/14![Southwest logo]()
$244
This Kiwi.com deal was found by Cheapflights users on 6/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/124:30 pm
SFO
- ISP
3 stops21h 40m
Multiple Airlines
Deal found 6/13![Multiple Airlines logo]()
$250
This Kiwi.com deal was found by Cheapflights users on 6/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/139:30 pm
SFO
- ISP
3 stops37h 03m
Multiple Airlines
Deal found 6/13![Multiple Airlines logo]()
$256
This JetBlue deal was found by Cheapflights users on 6/12. 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.
Tue 9/2210:28 am
SFO
- ISP
1 stop9h 54m
JetBlue
Deal found 6/12![JetBlue logo]()
$257
This Southwest deal was found by Cheapflights users on 6/11. 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.
Thu 7/1610:10 am
SFO
- ISP
2 stops10h 30m
Southwest
Deal found 6/11![Southwest logo]()
$261
This Southwest deal was found by Cheapflights users on 6/13. 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.
Sun 7/129:10 pm
SFO
- ISP
1 stop8h 10m
Southwest
Deal found 6/13![Southwest logo]()
$270
This JetBlue deal was found by Cheapflights users on 6/11. 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.
Tue 10/610:28 am
SFO
- ISP
1 stop9h 54m
JetBlue
Deal found 6/11![JetBlue logo]()
$278
This Kiwi.com deal was found by Cheapflights users on 6/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/135:30 pm
SFO
- ISP
2 stops22h 31m
Frontier
Deal found 6/13![Frontier logo]()
$284
This Kiwi.com deal was found by Cheapflights users on 6/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/126:00 am
SFO
- ISP
3 stops28h 28m
Multiple Airlines
Deal found 6/13![Multiple Airlines logo]()
$289
Find flight deals from San Francisco to Islip
Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Islip (ISP). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 14, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $300 (Southwest) |
One-way from | $182 (Southwest) |
Popular in | June |
Cheapest in | January |
Average price | $555 |
Cheapflights Fare Finder
Customize your flight search to find flights from San Francisco to Islip 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 14, 2026.
Use the filters below to find and compare flights from San Francisco to Islip that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
San FranciscoIslip
SFO - ISP
SFOISP
San Francisco
Mon 8/31
10:30 pm-10:15 am
1 stop8h 45m
Islip Long Island
Tue 9/8
6:05 am-11:35 am
1 stop8h 30m
$384
San FranciscoIslip
SFO - ISP
SFOISP
San Francisco
Tue 9/1
6:50 am-9:05 pm
2 stops11h 15m
Islip Long Island
Tue 9/8
3:20 pm-11:05 pm
2 stops10h 45m
$394
San FranciscoIslip
SFO - ISP
SFOISP
San Francisco
Wed 9/9
10:30 pm-9:40 am
1 stop8h 10m
Islip Long Island
Mon 9/14
4:05 pm-10:50 pm
2 stops9h 45m
$420
San FranciscoIslip
SFO - ISP
SFOISP
San Francisco
Thu 9/17
7:45 pm-9:40 am
2 stops10h 55m
Islip Long Island
Sun 9/20
6:20 am-1:10 pm
1 stop9h 50m
$429
San FranciscoIslip
SFO - ISP
SFOISP
San Francisco
Fri 7/24
9:25 am-11:40 pm
2 stops11h 15m
Islip Long Island
Wed 7/29
2:55 pm-10:30 pm
2 stops10h 35m
$477
San FranciscoIslip
SFO - ISP
SFOISP
San Francisco
Sat 7/11
11:40 pm-2:55 pm
2 stops12h 15m
Islip Long Island
Sat 7/18
3:30 pm-11:35 pm
2 stops11h 05m
$477
San FranciscoIslip
SFO - ISP
SFOISP
San Francisco
Sat 7/25
10:10 am-11:15 pm
2 stops10h 05m
Islip Long Island
Sat 8/1
3:30 pm-11:35 pm
2 stops11h 05m
$487
San FranciscoIslip
SFO - ISP
SFOISP
San Francisco
Thu 7/23
10:10 am-11:40 pm
2 stops10h 30m
Islip Long Island
Wed 7/29
12:25 pm-7:50 pm
1 stop10h 25m
$494
Cheapest one-way
Quickest one-way
San FranciscoIslip
SFO - ISP
SFOISP
San Francisco
Wed 8/12
10:30 pm-9:40 am
1 stop8h 10m
$182
San FranciscoIslip
SFO - ISP
SFOISP
San Francisco
Wed 7/22
9:10 pm-8:20 am
1 stop8h 10m
$244
Showing 1-10 of 16 resultsSorted by cheapest first
Compare providers for flights from San Francisco to Islip
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Francisco to Islip in June.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on San Francisco-Islip, New York flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Francisco-Islip, New York flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Francisco-Islip, New York flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on San Francisco-Islip, New York flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Francisco-Islip, New York flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from San Francisco to Islip
Have a flexible travel schedule? Discover the best time to fly to Islip from San Francisco with our price prediction graph.
SFO-ISP
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.
Related info for your journey
Find useful and relevant information for your journey from San Francisco to Islip. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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