Title: Cheap Flights from San Francisco to Islip (SFO to ISP) - Expedia.co.uk ![I like this Picture ](https://images.trvl-media.com/place/1638/63f46c37-e675-4de2-959a-e47798b53e52.jpg?impolicy=fcrop&w=1200&h=500&q=medium) Photo by Juan Blanco ![](https://images.trvl-media.com/place/1638/63f46c37-e675-4de2-959a-e47798b53e52.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # Cheap Flights from San Francisco (SFO) to Islip (ISP) - [Return](?flightType=roundtrip) - [One-way](?flightType=oneway) - [Multi-city](?flightType=multicity) ### Travellers Adults ChildrenAges 2 to 17 InfantsYounger than 2 EconomyPremium economyBusiness classFirst class Leaving from Going to Departing Returning Add a place to stay Add a car Direct flights only ## Popular airlines from San Francisco International Airport (SFO) to MacArthur Airport (ISP) - ![Southwest Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_WN.svg) Southwest Airlines [](https://www.expedia.co.uk/Flights-Search?leg1=from:sfo,to:isp,departure:22/10/2025TANYT&leg2=from:isp,to:sfo,departure:29/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"WN"}}]) - ![JetBlue Airways](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_B6.svg) JetBlue Airways [](https://www.expedia.co.uk/Flights-Search?leg1=from:sfo,to:isp,departure:22/10/2025TANYT&leg2=from:isp,to:sfo,departure:29/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"B6"}}]) ![notification illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__notification.svg) ### Be in the know Get alerts if flight prices drop or rise\* ![deals illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 25% on select hotels after you book a flight\* ![trophy illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our rewards [Sign in](https://www.expedia.co.uk/login) ## Frequently asked questions ### How much is a flight from SFO to MacArthur Airport? > Round-trip journeys between San Francisco Intl. Airport (SFO) and MacArthur Airport (ISP) start from . This figure is based on fares offered within the last 7 days on Expedia for flights departing within the next year — book ASAP to avoid missing out. Prices and availability are subject to change. Additional terms apply. ### Do I need to pay a cancellation fee if I cancel my flight from San Francisco Airport to MacArthur Airport? > When it comes to cancellation fees, every airline has different terms and conditions. If you decide to cancel your trip, head to our [Customer Service Portal](https://www.expedia.co.uk/service/?langid=1033). ### How do I find cheap flights from SFO to MacArthur Airport (ISP) that have flexible change policies? > Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for SFO to ISP flights, you'll see a "no change fees" filter for you to select. ### How far is the flight from San Francisco Intl. Airport (SFO) to MacArthur Airport? > The distance is around 4,200 kilometres, so fill your carry-on luggage with all the things you need to make your journey comfortable. Wondering what to take on board your San Francisco to Ronkonkoma flight? A sleep mask, earplugs and a travel pillow are among the essentials. ### Which airlines fly direct from San Francisco Intl. Airport (SFO) to ISP? > Direct flights aren't available, so you'll need to make at least one stop between San Francisco Intl. Airport (SFO) and MacArthur Airport (ISP). Use the layover time to stretch your legs and grab a coffee. ### Are San Francisco Airport to MacArthur Airport flight tickets cheaper when they're purchased at the last minute? > Last-minute planners can occasionally find a bargain, with some super cheap airfares from San Francisco Airport to MacArthur Airport (ISP) showing up a few weeks before the departure date. If you'd rather book ahead of time, Expedia compares and updates the best flight deals continually — as early as a year in advance in some cases. It depends on the carrier though, as not every airline advertises prices so far in advance. ## Travel information | Origin airport | San Francisco Intl. | | --- | --- | | Destination airport | MacArthur | | Distance | 4181 km | ## Book with confidence ### Compare flights from San Francisco to Islip easily and book with confidence For travelling on business or for pleasure, Expedia makes it easy to book your flights from San Francisco to Islip. Operating between them flights per day, airlines cover the route. And fly direct, getting you to MacArthur in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from San Francisco Intl. to MacArthur.   To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights.  Grab a great deal on your flight from San Francisco Intl. (SFO) to MacArthur (ISP) The easiest way to view the best deals on flights from San Francisco to Islip today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from San Francisco Intl. to MacArthur start at just and range up to .   To find an even better deal, try   - being flexible on your dates – midweek flights can be cheaper - looking for other airports near San Francisco and Islip - booking your flight during , the cheapest month on this route - varying your flight times – early morning and late at night are sometimes cheaper  Why you should book your San Francisco to Islip flight with Expedia! We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from San Francisco Intl. to MacArthur for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.   Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. 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