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Cheap flights from Islip to Ontario (ISP - ONT)

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How to find the cheapest flight from
Islip (ISP) to Ontario (ONT)

How far in advance should I book a flight from Islip to Ontario?

To save up to 8% on this flight, we recommend booking at least 17 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Islip to Ontario from $87 1-2 weeks out and tickets from $97 for flights departing within the next 72 hours.

What is the cheapest month to fly from Islip to Ontario?

September can be a great time to fly to Ontario from Islip with a flight ticket averaging about $95. Cheapflights users have found deals in the month of September for as cheap as $46. The most expensive prices can be found in the month of December.

Cheap flights from Islip to Ontario in October, November 2020

The best prices found for ISP to ONT flights for October, November
13 Nov - 14 Nov
$314pp
ISP
Islip Long Island
American Airlines
   
2 STOPS
ONT
Ontario
ONT
Ontario
American Airlines
   
2 STOPS
ISP
Islip Long Island
13 Nov - 14 Nov
$327pp
ISP
Islip Long Island
American Airlines
   
2 STOPS
ONT
Ontario
ONT
Ontario
American Airlines
   
2 STOPS
ISP
Islip Long Island

Islip to Ontario 2020 flight deals

Cheap flights to Ontario from Islip found for this year
13 Nov - 14 Nov
$314pp
ISP
Islip Long Island
American Airlines
   
2 STOPS
ONT
Ontario
ONT
Ontario
American Airlines
   
2 STOPS
ISP
Islip Long Island
14 Dec - 14 Dec
$321pp
ISP
Islip Long Island
American Airlines
   
2 STOPS
ONT
Ontario
ONT
Ontario
American Airlines
   
2 STOPS
ISP
Islip Long Island
13 Nov - 14 Nov
$327pp
ISP
Islip Long Island
American Airlines
   
2 STOPS
ONT
Ontario
ONT
Ontario
American Airlines
   
2 STOPS
ISP
Islip Long Island

One-way flights to Ontario from Islip

The cheapest one-way flights from Islip to Ontario
8:00 am - 4:57 pm
Frontier
1 Stop
11h 57m
ISP - ONT
Frontier
3:00 am - 6:34 pm
Multiple Airlines
3 Stops
18h 34m
ISP - ONT
Multiple Airlines
$488
Gotogate
1:20 am - 2:05 pm
American Airlines
3 Stops
15h 45m
ISP - ONT
American Airlines

Related info for your journey

Useful info, stats and facts about Islip to Ontario flights.

Flight FAQs

From Islip to Ontario

Are flight prices decreasing from Islip to Ontario due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Islip and Ontario for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

Which airlines flying from Islip Long Island to Ontario have flexible changes due to COVID-19?

One of the carriers operating flights from Islip Long Island to Ontario that may be offering flexible change policies is Frontier. Our site will let you filter for all airlines offering greater flexibility due to COVID-19.

Can I find flights from Islip to Ontario for under $300 on Cheapflights?

Yes, there are multiple flights from Islip to Ontario for under $300. The cheapest flight booked recently is on Frontier for just $258, but on average you can expect to pay $448.

Are there nonstop flights from Islip to Ontario for under $300 on Cheapflights?

There are no nonstop flights from Islip to Ontario, but Cheapflights can provide you with all the information you need to find the fastest route with the fewest stops.

What days are nonstop flights available from Islip to Ontario?

Nonstop flights are available for this route on the following days: Sunday, Monday, Tuesday, Wednesday, Thursday, Friday.

Does it rain more in Islip or Ontario?

Islip will have greater rainfall in 0 compared to Ontario over the next 11 days.

Is Islip weather warmer or cooler than Ontario?

You can imagine temperatures to be in the 95 °F range in July. The weather in Ontario is generally hotter than Islip's. As flight availability is subject to become more limited as peak season approaches it is ideal to book in a timely manner.

How long is the flight from Islip to Ontario?

American Airlines and Frontier can get you from Islip to Ontario in just under 10h 38m. Your travel time can differ by up to 1h 19m. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

What are the cheapest airlines flying from Islip to Ontario round-trip?

Frontier, at $258, was found to be the cheapest airline from Islip to Ontario. An alternate airline flying to your destination would be American Airlines.

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

To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $134. Frontier is not the only option available. At the moment, American Airlines is another option, for $263.

Alternative routes for Islip to Ontario

Destination information for Ontario

Things to know before you go. Useful info for your trip from Islip to Ontario

Airports servicing Islip

Airports servicing Ontario

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