$547 Cheap Flights from Santa Rosa (STS) to Islip (ISP)

View $547 flight on Fri, Nov 7, 2025Opens in a new window

Popular airlines from Santa Rosa, CA (STS-Sonoma County) to MacArthur Airport (ISP)

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Cheap Flights from Santa Rosa to Islip (STS-ISP)

Prices were available within the past 7 days and start at $547 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frequently asked questions

How much does a flight from Sonoma County Airport (STS) to MacArthur Airport (ISP) cost?
Lock in a cheap one-way flight from $547 or cheap return flight from Sonoma County Airport (STS) to MacArthur Airport (ISP) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Sonoma County Airport (STS) to MacArthur Airport (ISP)?
Flying in may help you find better deals, as it's the cheapest month for flights between STS and ISP. You'll typically find the lowest fares during off-peak months.
What is the cheapest airline that flies from Sonoma County Airport (STS) to MacArthur Airport (ISP)?
Expedia's filter tool lets you easily compare travel time, airlines and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest STS to ISP flight.
How many flights per day from Sonoma County Airport (STS) to MacArthur Airport (ISP)?
There are no daily direct flights departing from Sonoma County Airport (STS) to MacArthur Airport (ISP). But you can opt for flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be on your way before you know it.
What day of the week has the most flights from STS to ISP?
Generally you'll find the widest variety of flight choices on a Friday. Tuesdays are often the quietest.* But this can vary based on the time of year, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Sonoma County Airport (STS) to MacArthur Airport (ISP)?
Select a flight from Sonoma County Airport (STS) to MacArthur Airport (ISP) that leaves before 3 PM to reduce the risk of cancellations and delays. Later departures are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Sonoma County Airport (STS) to MacArthur Airport (ISP) last-minute?
Last-minute fares from STS to ISP are typically more expensive. For the lowest rates, start looking for flights as soon as possible. That said, if you can play around with your travel dates, you may find a cheap fare right before you leave.
Is it cheaper to book a STS to ISP flight and hotel package?
Compared with arranging hotels and flights separately, booking a STS to ISP flight and hotel package with Expedia could lead to significant savings. What's more, managing everything in one place will take the hassle out of travel planning. Just pick your flights and select from our wide range of hotels, then personalize your trip with other add-ons like activities, tours and car rentals.
Can I cancel or change the date of my flight from Sonoma County Airport (STS) to MacArthur Airport (ISP)?
You can usually reschedule or cancel your STS to ISP flight. However, if it's been more than 24 hours since booking, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Travel information

Origin airport
Sonoma County
Destination airport
MacArthur
Distance
2613 mi

Book with confidence

Book with confidence

Santa Rosa to Islip Flights

The cheapest times to fly from Santa Rosa to Islip

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Santa Rosa to Islip are during the month of . You can find some of the cheapest flights from Santa Rosa to Islip with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Santa Rosa to Islip

Sunday is one of the best days to book for cheap flights from Santa Rosa to Islip: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Santa Rosa to Islip

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Santa Rosa to Islip in 2025. You can also book with separate airlines for your outbound and return journeys, from $547 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Santa Rosa to Islip flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Santa Rosa to Islip airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Santa Rosa to Islip Flights

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