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

Frontier and Southwest are the most popular carriers operating from Islip Long Island to Ontario

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

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

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

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Islip Long Island Airport to Ontario Airport.

What documentation or ID do you need to fly to Ontario Airport?

The required travel and health documents for your Ontario Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ontario Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$155 Cheap Flights from Islip to Ontario in 2024/25

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Find the cheapest flights from Islip, New York to Los Angeles

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Cheap round-trip flights

These are some of the best round-trip flight deals from Islip, New York to Los Angeles that have been recently found on momondo from popular airlines, departing in the coming months.

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Flying one-way? These are some of the best deals recently discovered on momondo for flights from Islip, New York to Los Angeles.

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Planning a quick getaway from Islip, New York to Los Angeles? These are the last-minute flight deals available now.

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If you prefer a non-stop journey, check out our latest direct flight deals to Los Angeles, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from Islip, New York to Los Angeles

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The cheapest plane tickets to Los Angeles found on KAYAK recently.

ISP-ONT

2457 mimulti-stop

ONT-ISP

2457 mimulti-stop

Multiple Airlines

Find Deal

9:38 pm - 11:44 pmISP-ONT

53h 06m2 stops

$155Frontier

Find Deal

Mon, Jan 6

6:10 am - 3:40 pmISP-ONT

12h 30m2 stops

$189Southwest

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Tue, Jan 7

11:26 am - 4:32 pmISP-ONT

32h 06m2 stops

$273Frontier

Find Deal

Sun, Jan 5

11:40 am - 9:15 pmISP-ONT

12h 35m2 stops

$388Southwest

Find Deal

Sun, Jan 5

2:40 pm - 12:15 amISP-ONT

12h 35m2 stops

$423Southwest

Find Deal

Sat, Jan 4

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

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 month to fly to Ontario?

In general, January is the cheapest month to fly from Islip, New York to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $255. If you aren’t able to travel during the month of January, then book flights to Ontario from Islip, New York during September instead. Flights to Ontario in September, while not as cheap as those in January, still average around $298.

What is the cheapest day to depart on your flight to Ontario?

The cheapest day to depart on your flight to Ontario is on a Wednesday when prices can be found for as low as $355. This is often the case because there is less demand to fly during this day of the week. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Islip, New York to Ontario for around $448.

What is the cheapest time of day to depart on your flight to Ontario?

At noon is the cheapest time of day to fly from Islip, New York to Ontario when you can find flight prices for as low as $334. Flying to Ontario at noon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $392 on average. Flights to Ontario from Islip, New York in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

When to book flights from Islip, New York to Ontario

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

Estimated round-trip price

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

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

Fastest flight time	12h 30m
Direct flights	None
Airports in Ontario	1 airport

The fastest flight from Islip, New York to Ontario takes 12h 30m

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

There is 1 airport near Ontario: Ontario (ONT)

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How far is Islip Long Island to Ontario by plane?
The distance between Islip Long Island and Ontario is about 2454.1 mi.
When did momondo last update prices for flights from Islip Long Island Airport to Ontario Airport?
Prices for flights from Islip Long Island Airport to Ontario Airport were last updated today.
How old do you have to be to fly from Islip Long Island Airport to Ontario Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Islip Long Island Airport to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The required travel and health documents for your Ontario Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ontario Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Islip to Ontario. momondo saves you time and could save you money on your trip.

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

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

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

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 Ontario.

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

Price alerts on flights to Ontario from Islip are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.