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Islip

$125+ Cheap flights from California to Islip (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 10/28. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — ISP
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from California to Islip

Keep the following information in mind while searching for California to Islip flight deals. Data was last updated September 11, 2025.

Round-trip from

$181
(CheapOair)

One-way from

$125
(Southwest)

Popular in

December

Cheapest in

January

Average price

$297
From California to Islip Long Island
Search Deals
One-way flight from California to Islip Long Island
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Highest demand for flights based on searches. 6% potential increase in price ($24 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from California to Islip

Cheapest flights from California to Islip
Explore the most affordable flight options available from California to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This CheapOair deal was found by Cheapflights users on 9/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/211:04 pmLAS - ISP
1 stop8h 36mFrontier
Sat 10/114:58 pmISP - LAS
1 stop19h 29mFrontier
Deal found 9/10$181
This CheapOair deal was found by Cheapflights users on 9/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/32:21 pmLAX - ISP
1 stop17h 34mFrontier
Mon 10/65:05 pmISP - LAX
1 stop18h 23mFrontier
Deal found 9/10$187
This CheapOair deal was found by Cheapflights users on 9/9. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/262:21 pmLAX - ISP
1 stop17h 34mFrontier
Wed 10/111:35 amISP - LAX
1 stop23h 37mFrontier
Deal found 9/9$211
This CheapOair deal was found by Cheapflights users on 9/11. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/212:27 pmLAX - ISP
1 stop17h 30mFrontier
Sun 10/269:47 pmISP - LAX
1 stop13h 41mFrontier
Deal found 9/11$218
This Frontier deal was found by Cheapflights users on 9/10. 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.
Wed 10/111:04 pmLAS - ISP
1 stop8h 51mFrontier
Mon 10/65:05 pmISP - LAS
2 stops17h 57mFrontier
Deal found 9/10$218
This CheapOair deal was found by Cheapflights users on 9/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/102:27 pmLAX - ISP
1 stop17h 10mFrontier
Sat 10/184:58 pmISP - LAX
1 stop18h 30mFrontier
Deal found 9/10$221
This CheapOair deal was found by Cheapflights users on 9/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/162:27 pmLAX - ISP
1 stop17h 10mFrontier
Thu 10/239:37 pmISP - LAX
1 stop13h 51mFrontier
Deal found 9/10$226
This CheapOair deal was found by Cheapflights users on 9/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/222:21 pmLAX - ISP
1 stop17h 19mFrontier
Sat 10/45:05 pmISP - LAX
1 stop18h 07mFrontier
Deal found 9/10$229
This Frontier deal was found by Cheapflights users on 9/11. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1710:16 pmLAS - ISP
1 stop9h 21mFrontier
Sun 10/199:47 pmISP - LAS
1 stop14h 48mFrontier
Deal found 9/11$229
This CheapOair deal was found by Cheapflights users on 9/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/102:27 pmLAX - ISP
1 stop17h 10mFrontier
Fri 10/174:58 pmISP - LAX
1 stop18h 30mFrontier
Deal found 9/10$231
This CheapOair deal was found by Cheapflights users on 9/11. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/112:27 pmLAX - ISP
1 stop27h 25mFrontier
Thu 10/169:37 pmISP - LAX
1 stop13h 51mFrontier
Deal found 9/11$233
This Booking.com deal was found by Cheapflights users on 9/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/262:21 pmLAX - ISP
1 stop17h 34mFrontier
Tue 9/3011:25 amISP - LAX
2 stops27h 48mFrontier
Deal found 9/11$237

Cheapflights Fare Finder

 
Customize your flight search to find flights from California 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 September 11, 2025.
Use the filters below to find and compare flights from California to Islip that are best for you.

Fly from

California

Fly to

Islip

Route

Depart

Return

Price

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Thu 10/2

11:04 pm-10:40 am

1 stop8h 36m

Islip Long Island

Sat 10/11

4:58 pm-9:27 am

1 stop19h 29m

$181

Las VegasIslip

LAS - ISP

LASISP

Las Vegas Harry Reid Intl

Thu 10/2

11:04 pm-10:40 am

1 stop8h 36m

Islip Long Island

Mon 10/6

5:05 pm-9:27 am

1 stop19h 22m

$181

Los AngelesIslip

LAX - ISP

LAXISP

Los Angeles

Fri 10/3

2:21 pm-10:55 am

1 stop17h 34m

Islip Long Island

Mon 10/20

4:58 pm-8:28 am

1 stop18h 30m

$187

Los AngelesIslip

LAX - ISP

LAXISP

Los Angeles

Fri 10/3

2:21 pm-10:55 am

1 stop17h 34m

Islip Long Island

Wed 10/8

4:58 pm-8:28 am

1 stop18h 30m

$187

Los AngelesIslip

LAX - ISP

LAXISP

Los Angeles

Fri 10/3

2:21 pm-10:55 am

1 stop17h 34m

Islip Long Island

Sat 10/4

5:05 pm-8:12 am

1 stop18h 07m

$187

Los AngelesIslip

LAX - ISP

LAXISP

Los Angeles

Thu 9/25

2:21 pm-10:40 am

1 stop17h 19m

Islip Long Island

Mon 10/6

5:05 pm-8:28 am

1 stop18h 23m

$187

Los AngelesIslip

LAX - ISP

LAXISP

Los Angeles

Thu 10/2

2:21 pm-10:40 am

1 stop17h 19m

Islip Long Island

Wed 10/8

4:58 pm-8:28 am

1 stop18h 30m

$187

Los AngelesIslip

LAX - ISP

LAXISP

Los Angeles

Fri 10/10

2:27 pm-10:37 am

1 stop17h 10m

Islip Long Island

Sun 10/12

9:47 pm-8:28 am

1 stop13h 41m

$187

Los AngelesIslip

LAX - ISP

LAXISP

Los Angeles

Wed 10/8

2:27 pm-8:42 pm

1 stop27h 15m

Islip Long Island

Sun 10/12

9:47 pm-8:28 am

1 stop13h 41m

$187

Los AngelesIslip

LAX - ISP

LAXISP

Los Angeles

Tue 10/21

2:27 pm-10:57 am

1 stop17h 30m

Islip Long Island

Sun 10/26

9:47 pm-8:28 am

1 stop13h 41m

$187

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 60 results
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Best time to book a flight from California to Islip

Have a flexible travel schedule? Discover the best time to fly to Islip from California 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 California to Islip

What is the cheapest month to book a flight from California to Islip?

Currently, January is the cheapest month in which you can book a flight from California to Islip (average of $108). Flying from California to Islip in November is currently the most expensive (average of $213). 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.

What is the cheapest time of day to fly from CA to ISP?

Find hourly flight availability from California to Islip. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from California to Islip as you normally would.

Related info for your journey

Find useful and relevant information for your journey from California to Islip. 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 into for flights to Islip from California?

    If you book a flight to Islip from California, you will be flying to Long Island, which is the city’s only airport. Islip Long Island (ISP) is located 7.2 mi from the center of Islip.

  • How long is the flight from California to Islip?

    A quick flight from California to Islip can take about 8h 36m. Frontier provides one of the quickest options available for as low as $181. Airlines will cover a distance of 2275 mi.

  • What are the cheapest airlines to fly from California to Islip one-way?

    For one-way options, check prices for JetBlue. According to our data, you can fly for as low as $132. Users have also found prices from $135 and $200 on Frontier and Southwest, respectively.

  • What are the most popular routes from California to Islip?

    The most popular route from California to Islip is Los Angeles - Islip Long Island. You may also consider San Francisco - Islip Long Island or Las Vegas Harry Reid Intl - Islip Long Island.

  • Can I find deals for flights from California to Islip that include hotel bookings?

    Yes. In addition to deals on California to Islip flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from California to Islip?

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

  • Can I find deals for business class flights from California to Islip?

    Yes. Cheapflights offers flight deals from California to Islip 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 California to Islip?

    Currently, January is the cheapest month in which you can book a flight from California to Islip (average of $108). Flying from California to Islip in November is currently the most expensive (average of $213). 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

Traveling to a place near Islip?

Book flights to Islip if you plan to visit one of these locations
Riverhead
Southampton

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Alternative routes for California to Islip

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from California to Islip

Discover the top airline that operate flights from California to Islip. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$318Average$523FlexibilityNo cancel feeOn-time63%

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