What airlines fly to Islip, New York?

JetBlue, United Airlines and Delta are the top three most popular airlines that fly to Islip, New York from Ontario according to our data. JetBlue is the first choice among our users, with 33% of people opting to fly with this airline when traveling to Islip, New York. Keep in mind that there are 10 different airlines that fly to Islip, New York on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Ontario to Islip Long Island?

Southwest is the most popular carrier operating from Ontario to Islip Long Island

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

Prices for flights from Ontario Airport to Islip Long Island Airport were last updated today.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Islip Long Island Airport.

What documentation or ID do you need to fly to Islip Long Island Airport?

The travel and health documents required for your trip to Islip Long Island Airport 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 Islip Long Island Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$194 Cheap Flights from Ontario to Islip in 2025

1 adult

0 bags

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Find the cheapest flights from Ontario to New York

Round-trip

One-way

Cheap round-trip flights

11:35 am - 9:40 pmONT-ISP

7h 05m1 stop

6:05 am - 11:35 amISP-ONT

8h 30m1 stop

$282Southwest

Find Deal

Sat, Sep 20 - Tue, Sep 23

6:45 am - 9:40 pmONT-ISP

11h 55m2 stops

6:05 am - 11:35 amISP-ONT

8h 30m1 stop

$367Southwest

Find Deal

Sat, Sep 20 - Tue, Sep 23

3:45 pm - 12:50 pmONT-ISP

18h 05m2 stops

6:00 am - 11:35 amISP-ONT

8h 35m1 stop

$434Southwest

Find Deal

Sat, Aug 30 - Mon, Sep 1

6:45 am - 9:40 pmONT-ISP

11h 55m2 stops

12:30 pm - 8:15 pmISP-ONT

10h 45m2 stops

$469Southwest

Find Deal

Sat, Sep 20 - Tue, Sep 23

11:35 am - 9:40 pmONT-ISP

7h 05m1 stop

6:00 am - 11:35 amISP-ONT

8h 35m1 stop

$513Southwest

Find Deal

Sat, Aug 30 - Mon, Sep 1

6:41 pm - 1:24 pmONT-ISP

15h 43m2 stops

7:30 am - 8:42 pmISP-ONT

16h 12m2 stops

$918

Find Deal

Mon, Dec 8 - Wed, Dec 10

6:50 pm - 10:58 amONT-ISP

13h 08m2 stops

7:30 am - 8:43 pmISP-ONT

16h 13m3 stops

$923

Find Deal

Sat, Sep 20 - Tue, Sep 23

5:35 am - 9:40 pmONT-ISP

13h 05m2 stops

3:05 pm - 10:00 pmISP-ONT

9h 55m2 stops

$1,029Southwest

Find Deal

Sat, Aug 30 - Mon, Sep 1

Southwest flights from Ontario to Islip, New York

Our best Southwest deals on Ontario to Islip, New York flight tickets

Southwest

Sep 20

ONT11:35 amOntario

7h 05m

1 stop

ISP9:40 pmIslip Long Island

Sep 23

ISP6:05 amIslip Long Island

8h 30m

1 stop

ONT11:35 amOntario

$282

Find similar

Southwest

Sep 20

ONT6:45 amOntario

11h 55m

2 stops

ISP9:40 pmIslip Long Island

Sep 23

ISP6:05 amIslip Long Island

8h 30m

1 stop

ONT11:35 amOntario

$367

Find similar

Southwest

Aug 30

ONT3:45 pmOntario

18h 05m

2 stops

ISP12:50 pmIslip Long Island

Sep 1

ISP6:00 amIslip Long Island

8h 35m

1 stop

ONT11:35 amOntario

$434

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OntarioIslip

ONT - ISP

ONTISP

Ontario

Sat 9/20

11:35 am-9:40 pm

1 stop7h 05m

Islip Long Island

Tue 9/23

6:05 am-11:35 am

1 stop8h 30m

$282

OntarioIslip

ONT - ISP

ONTISP

Ontario

Sat 9/20

6:45 am-9:40 pm

2 stops11h 55m

Islip Long Island

Tue 9/23

6:05 am-11:35 am

1 stop8h 30m

$367

OntarioIslip

ONT - ISP

ONTISP

Ontario

Sat 8/30

3:45 pm-12:50 pm

2 stops18h 05m

Islip Long Island

Mon 9/1

6:00 am-11:35 am

1 stop8h 35m

$434

OntarioIslip

ONT - ISP

ONTISP

Ontario

Sat 9/20

6:45 am-9:40 pm

2 stops11h 55m

Islip Long Island

Tue 9/23

12:30 pm-8:15 pm

2 stops10h 45m

$469

OntarioIslip

ONT - ISP

ONTISP

Ontario

Sat 8/30

11:35 am-9:40 pm

1 stop7h 05m

Islip Long Island

Mon 9/1

6:00 am-11:35 am

1 stop8h 35m

$513

OntarioIslip

ONT - ISP

ONTISP

Ontario

Mon 12/8

6:41 pm-1:24 pm

2 stops15h 43m

Islip Long Island

Wed 12/10

7:30 am-8:42 pm

2 stops16h 12m

$918

OntarioIslip

ONT - ISP

ONTISP

Ontario

Sat 9/20

6:50 pm-10:58 am

2 stops13h 08m

Islip Long Island

Tue 9/23

7:30 am-8:43 pm

3 stops16h 13m

$923

OntarioIslip

ONT - ISP

ONTISP

Ontario

Sat 8/30

5:35 am-9:40 pm

2 stops13h 05m

Islip Long Island

Mon 9/1

3:05 pm-10:00 pm

2 stops9h 55m

$1,029

OntarioIslip

ONT - ISP

ONTISP

Ontario

Fri 9/12

12:45 pm-10:55 pm

1 stop7h 10m

$194

OntarioIslip

ONT - ISP

ONTISP

Ontario

Fri 9/12

10:35 am-10:55 pm

2 stops9h 20m

$248

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 resultsSorted by cheapest first

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

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

Prices

Airlines

What is the cheapest day to depart on your flight to Islip, New York?

The cheapest day to depart from Ontario to Islip, New York is on a Wednesday. Travelers who choose to depart for Islip, New York on a Wednesday will often find tickets for as low as $236. The most expensive day to fly to Islip, New York is Thursday, with ticket prices averaging around $671.

What is the cheapest time of day to depart on your flight to Islip, New York?

Flying to Islip, New York from Ontario in the evening is the least expensive time of day to depart. momondo users have found prices as low as $382 when looking at flights departing in the evening. Flights to Islip, New York are more costly in the morning, with an average ticket price of $616. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

When to book flights from Ontario to Islip, New York

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Islip, New York according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Ontario to Islip, New York (ONT to ISP) flight deals and tips

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

Best Price Found	$194
Fastest flight time	7h 05m
Direct flights	None
Airports in Islip, New York	1 airport

The best one-way flight to Islip, New York from Ontario in the past 72 hours is $194. The best round-trip flight deal from Ontario to Islip, New York found on momondo in the last 72 hours is $282.

The fastest flight from Ontario to Islip, New York takes 7h 05m

There are no direct flights from Ontario to Islip, New York. Popular non-direct route for this connection is Ontario Airport - Islip Long Island Airport.

There is 1 airport near Islip, New York: Islip Long Island (ISP)

Search flight deals

How far is Ontario to Islip Long Island by plane?
Ontario and Islip Long Island are 2454.1 mi apart from one another. Flights usually cover this in 7h 05m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Ontario Airport to Islip Long Island Airport?
Prices for flights from Ontario Airport to Islip Long Island Airport were last updated today.
How old do you have to be to fly from Ontario Airport to Islip Long Island Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Islip Long Island Airport.
What documentation or ID do you need to fly to Islip Long Island Airport?
The travel and health documents required for your trip to Islip Long Island Airport 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 Islip Long Island Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Montauk

Riverhead

Sag Harbor

Southampton

Amagansett

Why use momondo?

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

It is quick and easy to find Ontario to Islip 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 Islip that suits you.

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

momondo does allow users to show only those flights to Islip from Ontario which offer a flexible booking policy as well as other useful filters and features.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Islip from Ontario.

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

Yes. momondo can track prices for Ontario to Islip 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.