$138 Cheap Flights from Islip (ISP) to Baltimore (BWI)

View $138 flight on Wed, Jul 15, 2026Opens in a new window

Popular airlines from MacArthur Airport (ISP) to Baltimore Washington Intl. Airport (BWI)

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Cheap Flights from Islip to Baltimore (ISP-BWI)

Prices were available within the past 7 days and start at $138 for one-way flights and $275 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Southwest Airlines
Tue, Jun 16 - Wed, Jun 17
ISP
Islip
BWI
Baltimore
$275 Roundtrip, found 4 days ago
$275
Roundtrip
found 4 days ago
Select Southwest Airlines flight, departing Tue, Jun 16 from Islip to Baltimore, returning Wed, Jun 17, priced at $275 found 4 days ago
Southwest Airlines
Wed, Aug 26 - Thu, Aug 27
ISP
Islip
BWI
Baltimore
$288 Roundtrip, found 11 hours ago
$288
Roundtrip
found 11 hours ago
Select Southwest Airlines flight, departing Wed, Aug 26 from Islip to Baltimore, returning Thu, Aug 27, priced at $288 found 11 hours ago
Southwest Airlines
Thu, Jun 4 - Sat, Jun 6
ISP
Islip
BWI
Baltimore
$301 Roundtrip, found 3 days ago
$301
Roundtrip
found 3 days ago
Select Southwest Airlines flight, departing Thu, Jun 4 from Islip to Baltimore, returning Sat, Jun 6, priced at $301 found 3 days ago
Southwest Airlines
Tue, Jun 16 - Wed, Jun 17
ISP
Islip
BWI
Baltimore
$310 Roundtrip, found 4 days ago
$310
Roundtrip
found 4 days ago
Select Southwest Airlines flight, departing Tue, Jun 16 from Islip to Baltimore, returning Wed, Jun 17, priced at $310 found 4 days ago
Southwest Airlines
Tue, Jul 21 - Thu, Jul 23
ISP
Islip
BWI
Baltimore
$317 Roundtrip, found 18 hours ago
$317
Roundtrip
found 18 hours ago
Select Southwest Airlines flight, departing Tue, Jul 21 from Islip to Baltimore, returning Thu, Jul 23, priced at $317 found 18 hours ago
Southwest Airlines
Wed, Aug 26 - Thu, Aug 27
ISP
Islip
BWI
Baltimore
$323 Roundtrip, found 11 hours ago
$323
Roundtrip
found 11 hours ago
Select Southwest Airlines flight, departing Wed, Aug 26 from Islip to Baltimore, returning Thu, Aug 27, priced at $323 found 11 hours ago
Southwest Airlines
Tue, Jul 21 - Thu, Jul 23
ISP
Islip
BWI
Baltimore
$328 Roundtrip, found 18 hours ago
$328
Roundtrip
found 18 hours ago
Select Southwest Airlines flight, departing Tue, Jul 21 from Islip to Baltimore, returning Thu, Jul 23, priced at $328 found 18 hours ago
Southwest Airlines
Thu, Jun 4 - Sat, Jun 6
ISP
Islip
BWI
Baltimore
$336 Roundtrip, found 3 days ago
$336
Roundtrip
found 3 days ago
Select Southwest Airlines flight, departing Thu, Jun 4 from Islip to Baltimore, returning Sat, Jun 6, priced at $336 found 3 days ago
Southwest Airlines
Wed, Jun 10 - Fri, Jun 12
ISP
Islip
BWI
Baltimore
$339 Roundtrip, found 3 days ago
$339
Roundtrip
found 3 days ago
Select Southwest Airlines flight, departing Wed, Jun 10 from Islip to Baltimore, returning Fri, Jun 12, priced at $339 found 3 days ago
JetBlue Airways
Wed, Aug 26 - Thu, Aug 27
ISP
Islip
BWI
Baltimore
$387 Roundtrip, found 11 hours ago
$387
Roundtrip
found 11 hours ago
Select JetBlue Airways flight, departing Wed, Aug 26 from Islip to Baltimore, returning Thu, Aug 27, priced at $387 found 11 hours ago

Alternative airports near Baltimore

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Ronald Reagan Washington National DCA. Average driving time to city center is 57 minutes. Flights from $777
DCA
Ronald Reagan Washington National
Average driving time to city center57 min
Flights from $777

Frequently asked questions

How much does a flight from Islip, NY (ISP-MacArthur) to Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) cost?
You can find cheap one-way flights from $138 and cheap return flights from $275 Islip, NY (ISP-MacArthur) to Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) with Expedia. One-way flights generally range between $102 and $490, and roundtrip flights usually range from $311 to $942. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Islip, NY (ISP-MacArthur) to Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Islip, NY (ISP-MacArthur) to Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall)?
The cheapest month to fly from ISP to BWI is June when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Islip, NY (ISP-MacArthur) to Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall)?
Enter ISP to BWI and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from Islip, NY (ISP-MacArthur) to Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall)?
To find a cheap flight from Islip, NY (ISP-MacArthur) to Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Islip, NY (ISP-MacArthur) to Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall)?
The best airline to fly with from Islip, NY (ISP) to Baltimore, MD (BWI) will differ from traveler to traveler. If you like to fly early, WN offers early morning flights. If price is the most important factor, WN typically offers the lowest fares. 9K offers the most daily flights from ISP to BWI, which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Islip, NY (ISP-MacArthur) to Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Islip, NY (ISP-MacArthur) to Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall)?
On average, there are around 3 nonstop flights per day from MacArthur (ISP) to Baltimore Washington Intl. Thurgood Marshall (BWI). For more options, look at flights that include layovers.
What is the earliest flight from Islip, NY (ISP-MacArthur) to Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall)?
The earliest flight from MacArthur Airport (ISP) to Baltimore Washington International Thurgood Marshall Airport (BWI) typically departs at around 5:30 AM, operated by WN. This is a seasonal service active in November. An early flight can help you get a jump on your day in Baltimore. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Islip, NY (ISP-MacArthur) to Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall)?
The most popular departure times for flights from Islip (ISP) to Baltimore (BWI) are in the late afternoon, from 3pm to 6pm. About 29% of passengers prefer this time window. Many major carriers, including Southwest Airlines and Silver Airways, offer flights during this window. This timing works well because it allows you to arrive in Baltimore in the early evening, perfect for dinner plans or evening events.
How long does it take to fly from Islip, NY (ISP-MacArthur) to Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall)?
Direct flights from ISP to BWI usually take about 1 hour 20 minutes, traveling roughly 219 miles. If you opt for a connecting flight, expect to add around 8 hours to your journey. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Islip, NY (ISP-MacArthur) to Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall)?
Select the "Business class" and "First class" filters when looking for ISP to BWI flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Islip, NY (ISP-MacArthur) to Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) flight with Expedia?
It's easy to earn miles on a Islip, NY (ISP-MacArthur) to Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Baltimore from MacArthur (ISP)?
If you're planning to travel to Baltimore from MacArthur (ISP), you can fly into Baltimore Washington Intl. Thurgood Marshall (BWI) Some flights may connect through major hubs like Logan Intl. (BOS), Miami Intl. (MIA) before reaching Baltimore. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Islip, NY (ISP-MacArthur) to Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) at the last minute?
Typically, booking a last minute flight from Islip, NY (ISP-MacArthur) to Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Islip, NY (ISP-MacArthur) to Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) flight and hotel package?
Securing a Islip, NY (ISP-MacArthur) to Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) Baltimore Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Islip, NY (ISP-MacArthur) to Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall)?
If you booked your Islip, NY (ISP-MacArthur) to Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
MacArthur
Destination airport
Baltimore Washington Intl. Thurgood Marshall
Airlines serving
JetBlue Airways, Southwest Airlines
Roundtrip price
$275
Distance
219 mi
Average flight time
1 hour 19 mins

Book with confidence

Islip to Baltimore Flights

The cheapest times to fly from Islip to Baltimore

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 Islip to Baltimore are during the month of June. You can find some of the cheapest flights from Islip to Baltimore with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Islip to Baltimore

Sunday is one of the best days to book for cheap flights from Islip to Baltimore: 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 Islip to Baltimore

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 Islip to Baltimore in 2026. You can also book with separate airlines for your outbound and return journeys, from $138 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 Islip to Baltimore 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 Islip to Baltimore 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.

 

Islip to Baltimore Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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