Cheap Flights from Houston to Islip

Compare Houston to Islip flight deals

Find the cheapest month or even day of the year to fly to Islip

Book the best Islip fare with no extra fees

Find the cheapest month to fly from Houston to Islip

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

Houston to Islip: Flight information

The things to know before you go.
Cheapest flight foundR 2,545
Cheapest month to flyJune

Finding cheap flights from Houston to Islip: Frequently asked questions

The best price we found for a return flight from Houston to Islip is R 5,061. 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 Houston to Islip. But we found flights with one stop from R 5,061.
As of June 2026, there are no flights flying from Houston to Islip.
The cheapest month to fly from Houston to Islip is usually September.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Houston to Islip Airport on Thursday, 3 September 2026.
No airlines currently offer direct flights between Houston and Islip 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 Islip 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 Islip is around 40 days in advance, so don’t leave your flight to the last minute.
The cheapest airline that flies to Islip is Frontier Airlines .

Flying from Houston to Long Island MacArthur Airport (ISP): What you need to know

  • The timezone in Islip is UTC-5, which is one hour ahead of Houston. Long Island MacArthur Airport is located in Islip.

  • Arrive at the airport on time so you don't miss your flight from Houston to ISP. Be there at least two hours ahead for international flights and an hour early for domestic departures to avoid the stress of rushing.

  • July is a popular time to fly out. If you're heading away then or during a major holiday like Thanksgiving, Memorial Day or Christmas, get there even earlier. Aim for at least two hours ahead for domestic flights and up to four hours for international journeys.

Airports in Houston

Houston George Bush Intercontinental Airport (IAH)

Houston Hobby Airport (HOU)

About Long Island MacArthur Airport (ISP)

Getting from Long Island MacArthur Airport (ISP) to central Islip

  • From Long Island MacArthur Airport, central Islip is around 6 kilometres away. It takes about 10 minutes to reach the city centre by car.

  • Travelling on public transport takes around 30 minutes.

How to find the cheapest flights from Houston to Long Island MacArthur Airport (ISP)

  • At the moment, R 2,545 is the best price we've found for a one-way ticket from Houston to Long Island MacArthur Airport. The cheapest price for a return flight is R 5,061. Keep in mind fares may change due to demand at the time of booking.

  • To find cheap flights from Houston to ISP, book in advance. Airlines generally offer their most competitively priced fares when tickets are first released.

  • The 'Whole month' search tool will show you the cheapest Houston to Long Island MacArthur Airport tickets across each month. It's a great way to find a bargain if your travel dates are flexible.

  • Never miss a deal on plane tickets from Houston to ISP by setting up a Price Alert. We'll send you an email or notification on the app when a lower fare pops up.

  • Filters make it easier to snap up a deal on your flight from Houston to Long Island MacArthur Airport. Pick the airlines, flight times and number of stops that match your plans. Then sort the results by 'Cheapest' to bring up the lowest fares right away.

The best time to fly from Houston to Long Island MacArthur Airport (ISP)

  • Think about the kind of holiday you want when picking your flight dates. December is the quietest month to visit Islip. February is when most people book flights from Houston to Long Island MacArthur Airport (ISP), which may be perfect if you enjoy travelling when it's busier.

  • Lock in a Houston to ISP plane ticket departing in July if you're eager to visit the city during its warmest month. You can expect temperatures in Islip to range from 19ºC (66ºF) to 29ºC (84ºF).

  • January has temperatures of between -4ºC (25ºF) and 8ºC (46ºF). Look for cheap tickets from Houston to Long Island MacArthur Airport around that time if you'd rather travel in cooler conditions.

More about Islip

Explore more of the United States

  • Philadelphia is just one of the many cities in the United States waiting to be discovered once you've seen the sights of Islip. Around 193 kilometres away to the southwest, top sights here include Independence Hall, Liberty Bell and Philadelphia Museum of Art.

  • Boston is another must-experience destination in the United States and is around 241 kilometres northeast of Islip. No journey is complete without experiencing Museum of Fine Arts Boston, Freedom Trail and Boston Tea Party Ships & Museum.

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