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Cheap flights from Islip, New York to California from $100

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 California departing on 4/16. 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 California

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
6:39 pm - 11:15 am
ISP
-
LAS
19h 36m
1 stop
Frontier Logo
11:34 pm - 2:55 pm
LAS
-
ISP
12h 21m
1 stop
$200Frontier
Mon, Apr 13 - Wed, Apr 15
Frontier Logo
1:22 pm - 10:49 pm
ISP
-
LAS
12h 27m
1 stop
Frontier Logo
11:59 pm - 4:13 pm
LAS
-
ISP
13h 14m
1 stop
$209Frontier
Mon, Mar 9 - Wed, Mar 25
Frontier Logo
5:45 am - 6:39 pm
ISP
-
LAX
15h 54m
1 stop
Frontier Logo
8:54 pm - 9:13 am
LAX
-
ISP
9h 19m
1 stop
$221Frontier
Thu, Apr 9 - Sat, Apr 25
Frontier Logo
1:22 pm - 11:30 am
ISP
-
LAS
25h 08m
1 stop
Frontier Logo
12:40 pm - 12:47 pm
LAS
-
ISP
21h 07m
1 stop
$228Frontier
Mon, Mar 9 - Thu, Mar 12
Frontier Logo
6:39 pm - 11:15 am
ISP
-
LAS
19h 36m
1 stop
Frontier Logo
11:59 pm - 9:13 am
LAS
-
ISP
30h 14m
1 stop
$235Frontier
Mon, Apr 13 - Fri, Apr 17
Multiple Airlines Logo
4:07 pm - 6:39 pm
ISP
-
LAX
29h 32m
1 stop
Multiple Airlines Logo
11:36 pm - 6:09 pm
LAX
-
ISP
15h 33m
2 stops
$330Multiple Airlines
Mon, Apr 27 - Fri, May 1
Southwest Logo
12:30 pm - 6:55 pm
ISP
-
SAN
9h 25m
1 stop
Southwest Logo
12:45 pm - 11:20 pm
SAN
-
ISP
7h 35m
1 stop
$380Southwest
Wed, Apr 22 - Sat, Apr 25
Southwest Logo
12:30 pm - 6:55 pm
ISP
-
SAN
9h 25m
1 stop
Southwest Logo
10:40 pm - 11:50 am
SAN
-
ISP
10h 10m
2 stops
$385Southwest
Wed, Apr 22 - Sat, Apr 25
Southwest Logo
12:30 pm - 7:35 pm
ISP
-
SAN
10h 05m
2 stops
Southwest Logo
10:40 pm - 11:50 am
SAN
-
ISP
10h 10m
2 stops
$390Southwest
Wed, Apr 22 - Sat, Apr 25
Southwest Logo
5:45 am - 2:55 pm
ISP
-
SAN
12h 10m
2 stops
Southwest Logo
10:40 pm - 11:05 am
SAN
-
ISP
9h 25m
1 stop
$405Southwest
Tue, Mar 31 - Sat, Apr 4

Frontier flights from Islip, New York to California

Our best Frontier deals on Islip, New York to California flight tickets
Frontier
Apr 13
ISP6:39 pmIslip Long Island
19h 36m
1 stop
LAS11:15 amLas Vegas Harry Reid Intl
Apr 15
LAS11:34 pmLas Vegas Harry Reid Intl
12h 21m
1 stop
ISP2:55 pmIslip Long Island
$200
Frontier
Mar 9
ISP1:22 pmIslip Long Island
12h 27m
1 stop
LAS10:49 pmLas Vegas Harry Reid Intl
Mar 25
LAS11:59 pmLas Vegas Harry Reid Intl
13h 14m
1 stop
ISP4:13 pmIslip Long Island
$209
Frontier
Apr 9
ISP5:45 amIslip Long Island
15h 54m
1 stop
LAX6:39 pmLos Angeles
Apr 25
LAX8:54 pmLos Angeles
9h 19m
1 stop
ISP9:13 amIslip Long Island
$221

Southwest flights from Islip, New York to California

Our best Southwest deals on Islip, New York to California flight tickets
Southwest
Apr 13
ISP4:30 pmIslip Long Island
9h 50m
1 stop
LAS11:20 pmLas Vegas Harry Reid Intl
Apr 15
LAS6:50 amLas Vegas Harry Reid Intl
8h 40m
2 stops
ISP6:30 pmIslip Long Island
$359
Southwest
Apr 13
ISP4:30 pmIslip Long Island
9h 45m
2 stops
LAS11:15 pmLas Vegas Harry Reid Intl
Apr 15
LAS6:50 amLas Vegas Harry Reid Intl
8h 40m
2 stops
ISP6:30 pmIslip Long Island
$364
Southwest
Apr 25
ISP4:25 pmIslip Long Island
9h 10m
1 stop
LAS10:35 pmLas Vegas Harry Reid Intl
Apr 30
LAS5:30 amLas Vegas Harry Reid Intl
8h 00m
2 stops
ISP4:30 pmIslip Long Island
$378

momondo Fare Finder

 
Customize your flight search to find flights from Islip, New York to California 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 February 5, 2026.
Use the filters below to find and compare flights from Islip, New York to California that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Mon 4/13

6:39 pm-11:15 am

1 stop19h 36m

Las Vegas Harry Reid Intl

Wed 4/15

11:34 pm-2:55 pm

1 stop12h 21m

$200

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Mon 3/9

1:22 pm-10:49 pm

1 stop12h 27m

Las Vegas Harry Reid Intl

Wed 3/25

11:59 pm-4:13 pm

1 stop13h 14m

$209

IslipLos Angeles

ISP - LAX

ISPLAX

Islip Long Island

Thu 4/9

5:45 am-6:39 pm

1 stop15h 54m

Los Angeles

Sat 4/25

8:54 pm-9:13 am

1 stop9h 19m

$221

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Mon 3/9

1:22 pm-11:30 am

1 stop25h 08m

Las Vegas Harry Reid Intl

Thu 3/12

12:40 pm-12:47 pm

1 stop21h 07m

$228

IslipLas Vegas

ISP - LAS

ISPLAS

Islip Long Island

Mon 4/13

6:39 pm-11:15 am

1 stop19h 36m

Las Vegas Harry Reid Intl

Fri 4/17

11:59 pm-9:13 am

1 stop30h 14m

$235

IslipLos Angeles

ISP - LAX

ISPLAX

Islip Long Island

Mon 4/27

4:07 pm-6:39 pm

1 stop29h 32m

Los Angeles

Fri 5/1

11:36 pm-6:09 pm

2 stops15h 33m

$330

IslipSan Diego

ISP - SAN

ISPSAN

Islip Long Island

Wed 4/22

12:30 pm-6:55 pm

1 stop9h 25m

San Diego

Sat 4/25

12:45 pm-11:20 pm

1 stop7h 35m

$380

IslipSan Diego

ISP - SAN

ISPSAN

Islip Long Island

Wed 4/22

12:30 pm-6:55 pm

1 stop9h 25m

San Diego

Sat 4/25

10:40 pm-11:50 am

2 stops10h 10m

$385

IslipSan Diego

ISP - SAN

ISPSAN

Islip Long Island

Wed 4/22

12:30 pm-7:35 pm

2 stops10h 05m

San Diego

Sat 4/25

10:40 pm-11:50 am

2 stops10h 10m

$390

IslipSan Diego

ISP - SAN

ISPSAN

Islip Long Island

Tue 3/31

5:45 am-2:55 pm

2 stops12h 10m

San Diego

Sat 4/4

10:40 pm-11:05 am

1 stop9h 25m

$405

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 California from

How to get the cheapest flight ticket from Islip, New York to California

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

Can stopping save me money on Islip, New York to California flights?

You could potentially save up to 15% on your flight if you consider stops on a Islip, New York to California flight.

Cheap Islip, New York to California flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Islip, New York to California

Fastest flight time

8h 00m

Direct flights

None
The fastest flight from Islip, New York to California takes 8h 00m
There are no direct flights from Islip, New York to California. There are no popular flight routes from Islip, New York to California.
Search flight deals

  • When did momondo last update prices for flights from Islip Long Island Airport to California?

    Prices for flights from Islip Long Island Airport to California are refreshed on a daily basis.

  • How many operators does momondo search for flights from Islip Long Island Airport to California?

  • How old do you have to be to fly from Islip Long Island Airport to California?

    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 California.

  • What documentation or ID do you need to fly to California?

    The travel and health documents required for your trip to California can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at California. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Islip, New York to California

Compare and see reviews for airlines that fly from Islip, New York to California with momondo
Airline
Rating
Free Cancellation
Price
SouthwestPriceFrom $344Free CancellationRating
8.0
4,274 reviews
Search Southwest flights

Why use momondo?

Why should I use momondo to find a flight deal from Islip to California?

It is quick and easy to find Islip to California flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to California that suits you.

Can I find flights from Islip to California with flexible booking policies on momondo?

All flight searches from Islip to California on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Islip to California?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Islip to California.

I’m not ready to book a flight from Islip to California right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Islip to California flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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