Title: Cheap Flights from Islip to Baltimore (ISP to BWI) - Expedia.co.uk ![Baltimore which includes skyline, night scenes and modern architecture](https://images.trvl-media.com/place/178235/efe97181-8af8-46b6-b917-0282b17a2b28.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/178235/efe97181-8af8-46b6-b917-0282b17a2b28.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # Cheap Flights from Islip (ISP) to Baltimore (BWI) - [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 MacArthur Airport (ISP) to Baltimore Washington International Airport (BWI) - ![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:isp,to:bwi,departure:04/10/2025TANYT&leg2=from:bwi,to:isp,departure:11/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"WN"}}]) - ## Plan, book, fly with confidence - ### Be in the know Get alerts if flight prices drop or rise\* - ### Book smarter Save up to 25% on select hotels after you book a flight\* - ### Earn twice Earn your airline miles on top of our rewards [Sign in](https://www.expedia.co.uk/login) Flight from Islip to Baltimore route information | Origin airport | MacArthur | | --- | --- | | Destination airport | Baltimore Washington Intl. Thurgood Marshall | | Distance | 350 km | | Average flight time | 1 hour 17 mins | ## Compare flights from Islip to Baltimore easily and book with confidence For travelling on business or for pleasure, Expedia makes it easy to book your flights from Islip to Baltimore. Operating between them flights per day, airlines cover the route. And fly direct, getting you to Baltimore Washington Intl. Thurgood Marshall in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from MacArthur to Baltimore Washington Intl. Thurgood Marshall.   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 MacArthur (ISP) to Baltimore Washington Intl. Thurgood Marshall (BWI) The easiest way to view the best deals on flights from Islip to Baltimore 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 MacArthur to Baltimore Washington Intl. Thurgood Marshall 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 Islip and Baltimore - 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 Islip to Baltimore flight with Expedia! We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from MacArthur to Baltimore Washington Intl. Thurgood Marshall 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. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.   ## Frequently asked questions ### How much is a flight from ISP to BWI Marshall? > The lowest price advertised for a round-trip journey between MacArthur Airport (ISP) and BWI is . But you better get moving. This figure is based on fares available within the last 7 days on Expedia for flights departing within the next year. Prices and availability are subject to change. Additional terms apply. ### Do I need to pay a cancellation fee if I cancel my flight from MacArthur Airport to Baltimore Washington Intl. Thurgood Marshall Airport (BWI)? > Each airline has its own terms and conditions. If you decide to cancel your trip, visit our [Customer Service Portal](https://www.expedia.co.uk/service/?langid=1033). ### How do I find cheap flights from ISP to BWI Marshall 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 MacArthur Airport (ISP) to BWI Marshall flights, you'll see a "no change fees" filter for you to select. ### How far is the flight from MacArthur Airport to Baltimore Washington Intl. Thurgood Marshall Airport (BWI)? > The distance from ISP (ISP) to BWI Marshall (BWI) is just 350 kilometres. You'll be disembarking the plane and collecting your baggage from the carousel in next to no time. ### Which airlines fly direct from MacArthur Airport (ISP) to BWI Marshall? > Check out Southwest Airlines (WN) if you want to fly straight from MacArthur Airport to BWI Airport. This popular carrier operates 117 flights monthly, so you're sure to find one that fits your travel schedule. ### Are ISP to BWI flight tickets cheaper when they're purchased at the last minute? > Flight prices from MacArthur Airport to BWI are available up to a year before departure on Expedia. And although you may nab a great last-minute deal, it's not something you should count on. Also, booking your flights in advance means you'll have more choices — and you can avoid getting stuck in the dreaded middle seat! 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