Cheap Flight Tickets from Ontario (ONT) to Islip (ISP), Starting at $218

Good to Know: Cheapest and Fastest ONT - ISP Flights

Useful information for finding best airline tickets from Ontario International to Long Island Mac Arthur on your next trip.

Cheapest Round Trip Flight

$218

WN Southwest Airlines • 2 stops • 17h 10m

Aug 05 – Aug 12

The cheapest round trip flight from Ontario to Islip (ONT-ISP-ONT) is currently $218

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Fastest Flight

33m

The fastest nonstop flight from Ontario to Islip (ONT-ISP) takes 33m

Top Airlines Flying from Ontario to Islip

Southwest Airlines-WN

Southwest Airlines

Delta Airline, DL

Delta Airlines

United Airlines, UA

United Airlines

American Airlines, AA

American Airlines

Alaska Airlines -AS

Alaska Airlines

Latest Flight Deals from Ontario (ONT) to Islip (ISP)

Compare and book low fare round-trip air tickets from Ontario to Islip. Ideal for travelers with confirmed return itineraries.

Aug 05 - Aug 12, Economy
WN
Ontario → Islip
17h 10m
6:25 PM - 9:40 AM • 2 stops
WN
Ontario → Islip
10h
10:30 AM - 6:55 PM • 2 stops
$218
Southwest Airlines
Aug 05 - Aug 12, Economy
UA
Ontario → Islip
54m
1:50 PM - 10:56 AM • 2 stops
9K
Ontario → Islip
2h 9m
10:05 AM - 12:50 PM • 2 stops
$535
United Airlines
Aug 05 - Aug 12, Economy
DL
Ontario → Islip
59m
12:00 PM - 10:56 AM • 2 stops
9K
Ontario → Islip
46m
7:31 AM - 7:53 PM • 2 stops
$544
Delta Airlines
Aug 05 - Aug 12, Economy
B6
Ontario → Islip
- • 1 stop
B6
Ontario → Islip
- • 1 stop
$559
JetBlue Airways
Aug 05 - Aug 12, Economy
UA
Ontario → Islip
33m
6:00 AM - 8:15 PM • 2 stops
9K
Ontario → Islip
46m
7:31 AM - 7:53 PM • 2 stops
$649
United Airlines
Aug 05 - Aug 12, Economy
F9
Ontario → Islip
23h 55m
5:08 PM - 10:43 AM • 2 stops
MX
Ontario → Islip
64h 13m
11:57 AM - 11:50 PM • 2 stops
$1013
Frontier Airlines

Fly from Ontario to Islip with the Best Airfare Deals on FareLeaders

Looking for a cheap last-minute deal or the best round-trip flight from Ontario to Islip? Find the biggest savings on one-way and round-trip tickets right here.

FAQs on Ontario to Islip Flights

What are the airports in Ontario?
ONT
What’s the most popular airline flying from ONT to ISP?
The most popular airline flying from Ontario to Islip are
Can I fly from ONT to ISP non-stop?
NO
Which airlines fly nonstop between Ontario and Islip?
The non-stop flights between Ontario and Islip are .
What’s the earliest departure time from ONT to ISP Airport?
The earliest flight leaves ONT at 6:00 am and lands in ISP - Long Island Mac Arthur
What are the airports in Islip?
ISP
Can I make changes to my Ontario to Islip flight tickets or cancel them on FareLeaders.com?
No. We are an airfare comparison site. All the tickets are booked by the travel agent offering the flight deal and any changes or cancellations to be made are directly done directly by them or the airlines.
Can I cancel my flight tickets from ONT to ISP?
Read the fare rules of the Ontario to Islip air tickets booked. Some airlines allow you to cancel the tickets within a stipulated time period with a cancellation fee.
Which airline alliances offer flights from Ontario and Islip?
operate flights between Ontario and Islip
How long does a flight from Ontario to Islip take?
It takes approximately 6 hour to fly non-stop from ONT to ISP, which is 2464.25 miles by air.
Which airlines provide the cheapest flights from Ontario (ONT) to Islip (ISP) ?
In the past couple of days, the cheapest tickets to ISP from ONT were found on F9 : USD 1013
Do I need a passport to fly between ONT and ISP?
No
What’s the latest departure time from ONT to ISP ?
The last flight leaves ONT at 1:000 pm

Essential Information for Booking Flights from Ontario (ONT) - AI Insights

What's the cheapest airline from ont to isp?
You can find budget-friendly flights from Ontario International Airport (ONT) to Long Island MacArthur Airport (ISP) on Southwest Airlines. Low fares are available when booking in advance, which is recommended at least 46 days prior to your trip. This airline offers affordable airfare options for round-trip journeys.
What's the popular airline to fly from ont to isp?
You can fly from Ontario International Airport (ONT) to Long Island MacArthur Airport (ISP) on Southwest Airlines. This route is suitable for a one-way journey. Please note that since you're booking a round trip, it's recommended to book your return flight at least 46 days in advance to secure the best budget-friendly airfares. For affordable flights, consider searching for airfare deals on websites like fareleaders.com or other travel agencies specializing in cheap airline tickets and airfares.
What's the cheapest day of the week to fly from ont to isp?
The cheapest day to fly from Ontario International Airport (ONT) to Long Island MacArthur Airport (ISP) is Sunday. Flying on Sundays can result in lower fares, making it a budget-friendly option for your round-trip journey.
What's the cheapest month to fly from ont to isp?
The cheapest month to fly from Ontario International Airport (ONT) to Long Island MacArthur Airport (ISP) is November. Flying during this time can help you save on airfare costs, making it a budget-friendly option for your round-trip journey.
Which airline/airlines fly from ont to isp?
Southwest Airlines (WN) operates direct flights from Ontario International Airport (ONT) to Long Island MacArthur Airport (ISP). JetBlue Airways (B6) also offers non-stop flights on this route. Please check with these airlines for the most up-to-date schedules and fares.
What are the cheapest flights from Ontario International Airport to Long Island Mac Arthur Airport?
You can find the cheapest flights from Ontario International Airport to Long Island Mac Arthur Airport on FareLeaders, with Southwest Airlines being a popular choice.
How far in advance can I book my airfare for a round trip ticket?
It is recommended to book your airfare at least 46 days in advance for the best prices.
Can I find cheap airline tickets on your website?
Yes, FareLeaders offers a wide range of affordable airline tickets, including those from Southwest Airlines.
Are there any discounts or promotions available for weekend travel?
FareLeaders often features special deals and discounts for weekend travel, so be sure to check our website regularly.
How do I compare fares and find the best airfare deals?
You can use FareLeaders to compare fares and find the best airfare deals by using our search engine and filtering options.

Ontario (ONT) to Islip (ISP): Airport Information

Origin Airport Ontario International , Ontario, US
Destination Airport Long Island Mac Arthur , Islip, US
Distance 2464 miles

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