Title: £451 Cheap Flights from Baltimore to Islip (BWI to ISP) - Expedia.co.uk ![Long Island Lobster Rolls & Russian River Valley Chardonnay for Memorial Day #culture #longisland #jordan #chardonnay #memorialday #lobsterroll #wineandfood #ny](https://images.trvl-media.com/place/6400/dbbcc31c-f651-456d-9c7f-52c315cdec1c.jpg?impolicy=fcrop&w=1200&h=500&q=medium) Photo by Shannon Rocco ![](https://images.trvl-media.com/place/6400/dbbcc31c-f651-456d-9c7f-52c315cdec1c.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # £451 Cheap Flights from Baltimore (BWI) to Islip (ISP) [View £451 flight on Wed, 24 Dec 2025](https://expedia.co.uk/Flights-Search?trip=oneway&leg1=from:BWI,to:ISP,departure:24/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:451.00&airProductToken=AQqKAQotCMGmARIDMzc5GMFFIJIBKIDOgAMw4dCAAzhRQABYAWoCTUFyCFFIMk9YVU1OCi4IwaYBEgMyMTQYkgEgwZMBKL3RgAMwgNSAAzhPQAFYAWoCTUFyCE9INE9BVk1OCikIuZYBEgMyMTEYwZMBIMh8KOXUgAMwxNWAAzhCQAFYAWoCRVJyA0JJUBIKCAEQARgBKgJBUxgBIgQIARABKAIoAygEMAE) - [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 Baltimore Washington International Airport (BWI) 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:bwi,to:isp,departure:15/10/2025TANYT&leg2=from:isp,to:bwi,departure:22/10/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"WN"}}]) ![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) ## Cheap Flights from Baltimore (BWI) to Islip (ISP) Prices were available within the past 7 days and start at £451 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Return ## Find the cheapest month to fly from Baltimore (BWI) to Islip (ISP) ### January is typically the cheapest month to fly From £88 - £512 per traveller. Flight from Baltimore to Islip route information | Origin airport | Baltimore Washington Intl. Thurgood Marshall | | --- | --- | | Destination airport | MacArthur | | Distance | 350 km | | Average flight time | 1 hour 8 mins | ## Compare flights from Baltimore to Islip easily and book with confidence For travelling on business or for pleasure, Expedia makes it easy to book your flights from Baltimore to Islip. Operating between them 3 flights per day, 20 airlines cover the route. And Southwest Airlines fly direct, getting you to MacArthur in just 1hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Baltimore Washington Intl. Thurgood Marshall 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 Baltimore Washington Intl. Thurgood Marshall (BWI) to MacArthur (ISP) The easiest way to view the best deals on flights from Baltimore 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 Baltimore Washington Intl. Thurgood Marshall 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 Baltimore 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 Baltimore to Islip flight with Expedia! We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Baltimore Washington Intl. Thurgood Marshall 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. 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 BWI to MacArthur Airport? > If you're planning on travelling between Baltimore Washington Intl. Thurgood Marshall Airport (BWI) and ISP, round-trip journeys start from . This figure is based on fares advertised within the last 7 days on Expedia for flights departing within the next year, so don't hang about. Book now and save yourself both money and time. Prices and availability are subject to change. Additional terms apply. ### Do I need to pay a cancellation fee if I cancel my flight from BWI Airport to MacArthur Airport (ISP)? > This differs between air carriers, as each has its own terms and conditions. Head to the [Customer Service Portal](https://www.expedia.co.uk/service/?langid=1033), where there are easy-to-follow instructions on how to cancel your flight online. ### How do I find cheap flights from BWI Marshall to 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 Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to MacArthur Airport (ISP) flights, you'll see a "no change fees" filter for you to select. ### How far is the flight from BWI Marshall to ISP? > The flight distance from BWI Airport (BWI) to MacArthur Airport (ISP) (ISP) is only 350 kilometres. You'll be walking down the air bridge and picking up your bags from the carousel before long. ### Which airlines fly direct from BWI Airport to ISP? > If you want to fly straight from BWI to MacArthur Airport (ISP), Southwest Airlines (WN) is an excellent option. It operates 117 flights each month between Baltimore and Ronkonkoma. ### Are BWI Marshall to ISP flight tickets cheaper when they're purchased at the last minute? > It is possible to find great last-minute deals from BWI Airport to MacArthur Airport, but it can also be hit-or-miss. As many airlines release prices up to a year in advance, it's worthwhile keeping an eye on fares early and being ready to pounce when you see a bargain. 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