What is the cheapest airline to fly from Phoenix to Islip, New York round-trip?

Cheapflights users have booked flights from Phoenix to Islip, New York round-trip from $332. Southwest is priced at 27% lower than the current average price of a flight leaving 3 months from now.

In terms of precipitation, rainfall in Islip, New York ranges from 3.3 - 4.4 inches per month. March is typically the wettest month, when rainfall can reach 4.4 in. February is typically the driest time to visit Islip, New York when rainfall is around 3.3 in.

If weather is an important factor for your trip to Islip, New York, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

What is the cheapest time of day to fly from PHX to ISP?

When flying from Phoenix to Islip, New York, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What airport do you fly into for flights to Islip from Phoenix?

Most people fly into Islip Long Island (ISP) if they book a flight to Islip from Phoenix. On average, Long Island has 0 inbound flights from Phoenix per day from 1 airline. Islip Long Island is conveniently located just 7.2 mi from Islip’s city center.

Can I find deals for flights from Phoenix to Islip that include hotel bookings?

Yes. In addition to deals on Phoenix to Islip flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Phoenix to Islip?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Phoenix to Islip.

Can I find deals for business class flights from Phoenix to Islip?

Yes. Cheapflights offers flight deals from Phoenix to Islip by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Find Cheap Flights from Phoenix to Islip, NY

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Find flight deals from Phoenix to Islip

Popular in	September
Cheapest in	March
Average price	$456

Highest demand for flights based on searches. 9% potential increase in price ($46 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($18 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in October 2026

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Best time to book a flight from Phoenix to Islip

Have a flexible travel schedule? Discover the best time to fly to Islip from Phoenix with our price prediction graph.

PH1-ISP

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Reviews of airlines servicing Islip

Read reviews from past customers who have flown Southwest from Phoenix to Islip. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Southwest

7.9

Good

4,215 reviews

Reviews

1 / 20

8.0

Excellent

Patricia,Oct 2026

DAL - TPA

I love flying southwest, Both flights were packed full full - so not room for all carry one and bags had to be checked but still good flights.

Southwest

7.9

Good

4,215 reviews

Southwest

7.9

Good

4,215 reviews

Reviews

1 / 20

8.0

Excellent

Patricia,Oct 2026

DAL - TPA

I love flying southwest, Both flights were packed full full - so not room for all carry one and bags had to be checked but still good flights.

Related info for your journey

What airport do you fly into for flights to Islip from Phoenix?
Most people fly into Islip Long Island (ISP) if they book a flight to Islip from Phoenix. On average, Long Island has 0 inbound flights from Phoenix per day from 1 airline. Islip Long Island is conveniently located just 7.2 mi from Islip’s city center.
What is the cheapest airline to fly from Phoenix to Islip, New York round-trip?
Cheapflights users have booked flights from Phoenix to Islip, New York round-trip from $332. Southwest is priced at 27% lower than the current average price of a flight leaving 3 months from now.
Can I find deals for flights from Phoenix to Islip that include hotel bookings?
Yes. In addition to deals on Phoenix to Islip flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Phoenix to Islip?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Phoenix to Islip.
Can I find deals for business class flights from Phoenix to Islip?
Yes. Cheapflights offers flight deals from Phoenix to Islip by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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Top airline flying from Phoenix to Islip

Airline	Cheapest	Average	Flexibility	On-time
Southwest	Cheapest$332	Average$499	FlexibilityNo cancel fee	On-time63%

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Find cheap flights from Phoenix to Islip with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from Phoenix to Islip

Popular in

Cheapest in

Average price

Best time to book a flight from Phoenix to Islip

Have a flexible travel schedule? Discover the best time to fly to Islip from Phoenix with our price prediction graph.

Reviews of airlines servicing Islip

Get insights into the airlines that provide service to Islip. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Islip. Reviews last updated October 14, 2026.

Read reviews from past customers who have flown Southwest from Phoenix to Islip. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

What airport do you fly into for flights to Islip from Phoenix?

What is the cheapest airline to fly from Phoenix to Islip, New York round-trip?

Can I find deals for flights from Phoenix to Islip that include hotel bookings?

How can I find direct flights from Phoenix to Islip?

Can I find deals for business class flights from Phoenix to Islip?

Traveling to a place near Islip?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Phoenix to Islip

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Islip by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Phoenix to Islip by cabin class

Find flights from Phoenix to Islip, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Other flights to Islip

Explore flights to Islip departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 14, 2026.

Phoenix and Islip flights

Browse other Phoenix and Islip flight options. Last updated on October 14, 2026.

Popular flight searches

Check out other popular destinations found by fellow travelers in 2026

Top airline flying from Phoenix to Islip

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Cheap flights from Phoenix to Islip, NY (ISP)

Find cheap flights from Phoenix to Islip with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from Phoenix to Islip

Popular in

Cheapest in

Average price

Best time to book a flight from Phoenix to Islip

Have a flexible travel schedule? Discover the best time to fly to Islip from Phoenix with our price prediction graph.

Reviews of airlines servicing Islip

Read reviews from past customers who have flown Southwest from Phoenix to Islip. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

What airport do you fly into for flights to Islip from Phoenix?

What is the cheapest airline to fly from Phoenix to Islip, New York round-trip?

Can I find deals for flights from Phoenix to Islip that include hotel bookings?

How can I find direct flights from Phoenix to Islip?

Can I find deals for business class flights from Phoenix to Islip?

Traveling to a place near Islip?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Phoenix to Islip

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Islip by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Phoenix to Islip by cabin class

Find flights from Phoenix to Islip, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Other flights to Islip

Explore flights to Islip departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 14, 2026.

Phoenix and Islip flights

Browse other Phoenix and Islip flight options. Last updated on October 14, 2026.

Popular flight searches

Check out other popular destinations found by fellow travelers in 2026

Top airline flying from Phoenix to Islip

100% Free

Book with Flexibility

Travel Smart