Cheap Flights from Islip (ISP) to Phoenix Sky Harbor (PHX)

Compare Islip to Phoenix Sky Harbor flight deals

Find the cheapest month or even day of the year to fly to Phoenix Sky Harbor

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Flight deals from Islip to Phoenix Sky Harbor

Looking for a cheap last-minute deal or the best return flight from Islip Airport to Phoenix Sky Harbor Airport? If you want to travel next month, return fares start from £357. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Islip to Phoenix Sky Harbor

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Islip to Phoenix Sky Harbor flights are currently cheapest in September.

Islip to Phoenix: Flight information

The things to know before you go.
Cheapest flight found£143
Cheapest month to flySeptember

Finding cheap flights from Islip to Phoenix Sky Harbor: Frequently asked questions

The best price we found for a return flight from Islip to Phoenix Sky Harbor is £357. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Islip to Phoenix Sky Harbor. But we found flights with one or more stops from £357.
As of June 2026, there are no flights flying from Islip to Phoenix Sky Harbor.
The cheapest month to fly from Islip to Phoenix Sky Harbor is usually July.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Islip Airport to Phoenix Sky Harbor Airport on Thursday, 9 July 2026.
No airlines currently offer direct flights between Islip Airport and Phoenix Sky Harbor Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Phoenix Sky Harbor but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Phoenix is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Southwest Airlines offers the cheapest flight tickets to Phoenix Sky Harbor.

Flying from Islip Airport (ISP) to Phoenix Sky Harbour Airport (PHX): what you need to know

  • The timezone in Phoenix is UTC-7, which is two hours behind Islip.

  • To ensure you get on your ISP to PHX flight, leave enough time to navigate the airport and find your gate. Turning up two hours ahead of international departures and one hour before domestic flights is the general rule.

  • During popular months like July, it's best to get to the airport earlier. Arrive two hours before domestic departures and four hours ahead for an international flight whenever you're flying during peak periods in general.

  • Think about adding a stopover when booking your ticket from Islip Airport to Phoenix Sky Harbour Airport. Simply deselect 'Direct flights only' to break up your trip, or perhaps explore a new destination along the way. Here are some options between ISP and PHX:

    • Atlanta Hartsfield-Jackson Airport

    • Orlando International Airport

    • Baltimore Washington International Airport

How to find the cheapest flights from Islip Airport (ISP) to Phoenix Sky Harbour Airport (PHX)

  • The cheapest price we've found for a one-way Islip Airport to Phoenix Sky Harbour Airport flight is £143. A round-trip plane ticket is currently £357. Depending on the availability when you book, these fares may change.

  • Don't leave things to the last minute. You're more likely to get cheap tickets from ISP to PHX if you book ahead. Airlines often offer some amazing early bird discounts.

  • If you're flexible with your travel plans, try using the 'Whole month' search tool. It'll show you the lowest price in each month when searching for your flight from Islip Airport to Phoenix Sky Harbour Airport.

  • You don't need to check back in every day to find out if fares have dropped when you set up a Price Alert. We'll update you as soon as a special offer becomes available on cheap flights from ISP to PHX.

  • Tailor your trip using filters. Select your preferred arrival and departure times, total journey duration and airlines. You can also sort results by 'Fastest,' 'Best' or 'Cheapest' flights from Islip Airport to Phoenix Sky Harbour Airport.

Handy information about Islip Airport (ISP)

  • ISP's address is 100 Arrivals Avenue.

  • 76% of flights leaving from Islip Airport make it to their destination on schedule.

  • Central Islip to Islip Airport is approximately 6 kms (4 miles). Depending on traffic, it'll take about 10 minutes to get there if you're driving, ride-sharing or catching a taxi.

  • You can expect a journey time of about 30 minutes on public transport.

  • Need a handy hotel near ISP? If you're catching an early flight from Islip Airport to Phoenix Sky Harbour Airport, these stays will have you sleeping moments from your check-in counter:

Arriving at Phoenix Sky Harbour Airport (PHX)

Getting from Phoenix Sky Harbour Airport (PHX) to central Phoenix

  • You'll find PHX at 3400 Sky Harbour Boulevard.

  • Phoenix Sky Harbour Airport to central Phoenix has a drive time of about 10 minutes. It's approximately 5 kms (3 miles) away.

  • It takes around 25 minutes if you're travelling on public transport.

When to fly to Phoenix Sky Harbour Airport (PHX)

  • It's time to pick your dates for your flight from Islip Airport to Phoenix Sky Harbour Airport. April is the busiest month to visit Phoenix. If you prefer a more laid-back vibe, go in March.

  • The warmest month in Phoenix is July, with temperatures ranging between 27ºC and 45ºC. Book your flights from Islip Airport to Phoenix Sky Harbour Airport in this month if you enjoy this type of weather.

  • Search for cheap tickets from ISP to PHX in January if you want to travel in cooler conditions. Temperatures are at their lowest then, ranging between 4ºC and 21ºC on average.

Explore more of the United States

  • Phoenix has plenty to offer, but there are so many other corners of the United States waiting to be explored. About 483 kms (300 miles) west of Phoenix, a visit to San Diego will keep you busy. Start with attractions like San Diego Zoo, San Diego Balboa Park and USS Midway Museum.

  • Around 418 kms (260 miles) north-west of Phoenix, Las Vegas is another essential stop in the United States. Get a taste of what this destination has to offer at Ciudad del Pecado o Las Vegas, Las Vegas Strip and Fountains of Bellagio.

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.